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Date
2020 1
2018 2
2017 5
Avant 2017 115
Classe IPC
G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support 17
H04N 7/16 - Systèmes à secret analogiques; Systèmes à abonnement analogiques 14
H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé 10
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole 9
H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système 9
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Statut
En Instance 29
Enregistré / En vigueur 94
Résultats pour  brevets
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1.

TECHNIQUES FOR MANAGING GENERATION AND RENDERING OF USER INTERFACES ON CLIENT DEVICES

      
Numéro de document 03120826
Statut En instance
Date de dépôt 2019-11-21
Date de disponibilité au public 2020-05-28
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Li, Hongliang
  • Delpuch, Alain

Abrégé

Techniques and systems are provided for processing user interface content. For example, a server computer can receive a user interface event corresponding to a user interface of a device (e.g., a client device, another server computer, or other device). An application associated with the user interface event can be determined, and an interface model 5 can be generated using the application associated with the user interface event. The interface model defines state information for one or more graphic objects of the user interface. The state information results from the user interface event. The server computer can send the interface model to the device, which enables the device to render the user interface.

Classes IPC  ?

  • G06F 9/451 - Dispositions d’exécution pour interfaces utilisateur
  • G06F 9/54 - Communication interprogramme

2.

METHOD FOR DETECTING AT LEAST ONE GLITCH IN AN ELECTRICAL SIGNAL AND DEVICE FOR IMPLEMENTING THIS METHOD

      
Numéro de document 03065884
Statut En instance
Date de dépôt 2018-06-12
Date de disponibilité au public 2018-12-20
Propriétaire NAGRAVISION S.A. (Canada)
Inventeur(s) Martin, Jean-Marie

Abrégé

The present invention relates to a method for detecting at least one glitch (1) in an electrical signal (2). This method comprises: - generating, from said electrical signal (2), at least one digital oscillating signal (3) which is sensitive to glitches (1); and -performing the following steps as a repeatable round: - assigning a time window (5) to at least one digital oscillating signal (3), said time window (5) being implemented on the basis of a clock signal (4) substantially insensitive to said at least one glitch (1) to be detected; - determining from said time window (5) a sampling value (13) of the digital oscillating signal (3), said sampling value (13) being characteristic of said digital oscillating signal (3) throughout its time window (5); - detecting any potential glitch (1) in said electrical signal (2) by comparing said sampling value (13) with an expected reference value (23); and - outputting a response typifying a result of the comparison step. The invention also relates to a device for implementing said method.

Classes IPC  ?

  • G01R 31/317 - Tests de circuits numériques
  • G06F 21/75 - Protection de composants spécifiques internes ou périphériques, où la protection d'un composant mène à la protection de tout le calculateur pour assurer la sécurité du calcul ou du traitement de l’information par inhibition de l’analyse de circuit ou du fonctionnement, p.ex. pour empêcher l'ingénierie inverse
  • G06K 19/073 - Dispositions particulières pour les circuits, p.ex. pour protéger le code d'identification dans la mémoire

3.

PRE-ENTITLEMENT ENFORCEMENT

      
Numéro de document 03062231
Statut En instance
Date de dépôt 2018-05-03
Date de disponibilité au public 2018-11-08
Propriétaire NAGRAVISION SA (Canada)
Inventeur(s)
  • Hunacek, Didier
  • Fischer, Jean-Bernard

Abrégé

A method of transmitting entitlement messages to content consumption devices in a access control system, the method comprising periodically transmitting entitlement messages to content consumption devices in a access control system and periodically extending an expiry time comprised in the entitlement messages. The entitlement messages comprise indicator data indicating to the content consumption devices that subsequent entitlement messages loaded into a content consumption device after a first entitlement message is loaded into the content consumption device shall not be used by the content consumption device to access protected media content.

Classes IPC  ?

  • H04N 21/266 - Gestion de canal ou de contenu, p.ex. génération et gestion de clés et de messages de titres d'accès dans un système d'accès conditionnel, fusion d'un canal de monodiffusion de VOD dans un canal multidiffusion
  • H04N 21/418 - Carte externe destinée à être utilisée en combinaison avec le dispositif client, p.ex. pour l'accès conditionnel
  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]
  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé
  • H04N 7/167 - Systèmes rendant le signal de télévision inintelligible et ensuite intelligible

4.

CREATING INTUITIVE FAVORITES FOR USERS

      
Numéro de document 03009459
Statut En instance
Date de dépôt 2017-01-27
Date de disponibilité au public 2017-08-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Kaliamoorthi, Amudha
  • Lakshmi Sharan Lal, Dharmveer

Abrégé

Example embodiments provide systems and methods for dynamically creating intuitive favorites for a user. The system and methods include monitoring actions performed, by the user at a digital receiver, with respect to a plurality of content programs. The actions performed with respect to the plurality of content programs are analyzed. The analysis includes comparing a level of the actions with respect to a first content program of the plurality of content programs with a threshold. Based on the comparing indicating that the first content program is a favorites, an indication that the first content program is a favorites content program is stored to a data store.

Classes IPC  ?

  • G06F 17/30 - Recherche documentaire; Structures de bases de données à cet effet

5.

HARDWARE INTEGRITY CHECK

      
Numéro de document 03007579
Statut En instance
Date de dépôt 2016-12-13
Date de disponibilité au public 2017-06-22
Propriétaire NAGRAVISION SA (Suisse)
Inventeur(s)
  • Forler, Edouard
  • Borgeaud, Jonathan
  • Seltzer, Steven

Abrégé

A data processing device is disclosed, which comprises a plurality of data processing hardware components, such as one or more of a microprocessor, a central processing unit, a system on chip hardware component, a conditional access hardware component, a descrambler hardware component, a graphics hardware component, a video hardware component and a field programmable gate array hardware component. A first hardware component of the plurality of data processing hardware components is configured to send a challenge to at least one remaining hardware component of the plurality of data processing hardware components. Each remaining hardware component is configured to receive a respective challenge and to process the challenge to produce one or more respective responses. The device is configured to use one or more responses to verify device integrity.

Classes IPC  ?

  • G06F 21/57 - Certification ou préservation de plates-formes informatiques fiables, p.ex. démarrages ou arrêts sécurisés, suivis de version, contrôles de logiciel système, mises à jour sécurisées ou évaluation de vulnérabilité

6.

METHODS AND SYSTEMS FOR AUTHENTICATION USING ZERO-KNOWLEDGE CODE

      
Numéro de document 02998977
Statut Délivré - en vigueur
Date de dépôt 2016-08-16
Date de disponibilité au public 2017-03-30
Date d'octroi 2020-12-22
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Fischer, Nicolas
  • Gauteron, Laurent

Abrégé

Methods and systems for authentication using zero-knowledge code. One embodiment takes the form of a process that includes detecting an accessory-access-request event associated with a trusted accessory. The process includes generating a seed sequence having a first number of seed-sequence elements. The process includes outputting an indication of at least one seed-sequence element. The process includes receiving at least one seed-sequence-element-modifier signal for at least one of the seed-sequence elements. The process includes modifying the generated seed sequence in accordance with the at least one received seed-sequence-element-modifier signal. The process includes comparing the modified seed sequence with a stored access sequence. The process includes granting operational access to the trusted accessory when the modified seed sequence matches the stored access sequence. The process includes denying operational access to the trusted accessory when the modified seed sequence does not match the stored access sequence.

Classes IPC  ?

  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
  • H04L 12/54 - Systèmes de commutation par mémorisation et restitution

7.

METHODS AND SYSTEMS FOR TRANSMISSION OF ARBITRARY DATA VIA BLUETOOTH HFP AUDIO CONNECTIONS WITH LOW LATENCY

      
Numéro de document 02997200
Statut En instance
Date de dépôt 2016-08-16
Date de disponibilité au public 2017-03-16
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Seltzer, Steven

Abrégé

An embodiment takes the form of a method carried out by a communication device. A binary data sequence is obtained at a communication device for transmission via a Bluetooth data link configured according to an audio-codec-based Bluetooth profile, wherein an audio codec is configured to receive a multi-bit data byte and output a single bit indicating whether the received multi-bit data byte is larger or smaller than a prior output reference byte, a multi-bit data byte sequence is generated based on the binary data sequence, the multi-bit data byte sequence is provided to the audio codec to induce the codec to generate a one-bit per-sample binary sequence representative of the binary data sequence, and, the generated one-bit per-sample binary sequence is transmitted via the Bluetooth data link.

Classes IPC  ?

  • H04L 25/49 - Circuits d'émission; Circuits de réception à au moins trois niveaux d'amplitude
  • H04W 12/02 - Protection de la confidentialité ou de l'anonymat
  • H04L 67/303 - Profils des terminaux
  • H03M 3/02 - Modulation delta, c. à d. modulation différentielle à un bit

8.

METHOD AND DEVICE TO TRANSFER A VIDEO STREAM BETWEEN A HOST DEVICE AND AN ELECTRONIC DESCRAMBLING DEVICE

      
Numéro de document 02997204
Statut En instance
Date de dépôt 2016-08-29
Date de disponibilité au public 2017-03-09
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Gremaud, Fabien

Abrégé

The present invention refers to the field of video data transfer to a USB dongle. it is proposed a method to transfer a video stream originating from a one producer, having a producer ID, from a host device to an electronic descrambling device in charge of descrambling said at least one stream, said host device comprising a controller comprising a bulk pipe out and a bulk pipe in transfer, comprising the steps of : - for each producer, defining a chunk of data from the video stream, - forming a chain of out transfer, the chain of out transfer comprising a chain out header (oqH) linked with a plurality of chain out descriptors (oqTD), the first chain out descriptor pointing to a out description packet containing the at least one producer ID, the second and subsequent chain out descriptor pointing to the chunk of data, each chunk of data being of a particular producer, and the last chain out descriptor being configured to generate an interrupt, - forming a chain of in transfer, the chain of in transfer comprising a chain in header (iqH) linked with a plurality of chain in descriptors (iqTD), each chain in descriptor pointing to a descrambled chunk of data, - requesting the controller to process the chain, - receiving the description packet by the electronic descrambling device and identifying key data associated with the at least one chunk, - using the key data to descramble the data chunk, - receiving by the controller, via the bulk pipe in the descrambled chunk, - triggering an interrupt by the reception of the last descrambled chunk.

Classes IPC  ?

  • H04N 21/418 - Carte externe destinée à être utilisée en combinaison avec le dispositif client, p.ex. pour l'accès conditionnel
  • H04N 21/436 - Interfaçage d'un réseau de distribution local, p.ex. communication avec un autre STB ou à l'intérieur de la maison
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo

9.

SYSTEMS AND METHODS FOR CONDUCTING SECURE VOIP MULTI-PARTY CALLS

      
Numéro de document 02987142
Statut En instance
Date de dépôt 2016-05-27
Date de disponibilité au public 2016-12-08
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Fer, Francois
  • Macchetti, Marco
  • Gauteron, Laurent
  • Perrine, Jerome

Abrégé

System and method for establishing secure conference calls. In one example system, a central conference call server establishes point-to-point connections with accessory devices comprising a secure element and connected to corresponding participant devices. The conference call server includes an interface to a plurality of secure elements configured to perform scrambling and unscrambling of media signals communicated to and from the accessory devices. In another example, one of the participant devices operates as the central conference call server. In other examples, participant devices communicate on a conference call via point-to-point connections between all accessory devices connected to the participant devices. The accessory devices include secure elements for decryption and encryption of media signals communicated between the accessory devices.

Classes IPC  ?

  • H04M 3/56 - Dispositions pour connecter plusieurs abonnés à un circuit commun, c. à d. pour permettre la transmission de conférences
  • H04L 65/403 - Dispositions pour la communication multipartite, p.ex. pour les conférences (dispositions pour connecter plusieurs abonnés à un circuit commun, c. à d. pour permettre la transmission de conférences H04M 3/56;systèmes de téléconférence H04N 7/15;systèmes de commutation de données pour la conférence H04L 12/18)
  • H04L 12/18 - Dispositions pour la fourniture de services particuliers aux abonnés pour la diffusion ou les conférences
  • H04L 12/66 - Dispositions pour la connexion entre des réseaux ayant différents types de systèmes de commutation, p.ex. passerelles
  • H04M 7/00 - Dispositions d'interconnexion entre centres de commutation 

10.

METHODS AND SYSTEMS FOR ESTABLISHING AN ENCRYPTED-AUDIO SESSION

      
Numéro de document 02987151
Statut En instance
Date de dépôt 2016-05-27
Date de disponibilité au public 2016-12-08
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Wendling, Bertrand

Abrégé

An embodiment takes the form of a method carried out by a personal mobile device. The personal mobile device receives a session-request message requesting establishment of an encrypted-audio session with a call-initiating device, responsively presents one or more call-response inquiries via a user interface, and subsequently receives an accessory-unready indication via the user interface. The one or more call-response inquiries include an accessory-status inquiry, and the accessory-unready indication is associated with the presented accessory-status inquiry. In response to receiving the accessory-unready indication, the personal mobile device sends, to the call-initiating device, a request-acknowledgment message that is associated with the session-request message. Subsequent to sending the request-acknowledgment message but before establishing the encrypted-audio session, the personal mobile device makes an accessory-ready determination. In response to making the accessory-ready determination, the personal mobile device establishes the encrypted-audio session.

Classes IPC  ?

  • H04W 76/10 - Gestion de la connexion Établissement de la connexion
  • H04W 12/02 - Protection de la confidentialité ou de l'anonymat
  • H04L 65/1069 - Établissement ou terminaison d'une session
  • H04M 1/21 - Combinaisons avec un équipement auxiliaire, p.ex. avec pendule ou bloc-notes

11.

METHODS AND SYSTEMS FOR COMMUNICATION-SESSION ARRANGEMENT ON BEHALF OF CRYPTOGRAPHIC ENDPOINTS

      
Numéro de document 02988477
Statut En instance
Date de dépôt 2016-06-03
Date de disponibilité au public 2016-12-08
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Perrine, Jerome
  • Benoit, Bernard
  • Van Riek, Maurice
  • Osen, Karl

Abrégé

In an embodiment, a communication device receives a request to establish a media session with a remote endpoint. In response to receiving the request, the communication device exchanges media-session control data with the remote endpoint on behalf of a local endpoint to establish the requested media session between the local endpoint and the remote endpoint. The communication device is communicatively connected to the local endpoint via a Personal Area Network (PAN) communication link. The communication device relays media-session payload data between the local and remote endpoints. The media-session payload data (i) is associated with the media session and (ii) is encrypted based on at least one payload-data cryptographic key that is not accessible to the communication device.

Classes IPC  ?

  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
  • H04W 12/02 - Protection de la confidentialité ou de l'anonymat
  • H04M 1/253 - Appareils téléphoniques utilisant la transmission numérique de la parole
  • H04M 1/60 - COMMUNICATIONS TÉLÉPHONIQUES Équipement de sous-station, p.ex. pour utilisation par l'abonné comprenant des amplificateurs de parole

12.

METHODS AND SYSTEMS FOR CONVEYING ENCRYPTED DATA TO A COMMUNICATION DEVICE

      
Numéro de document 02987881
Statut En instance
Date de dépôt 2016-06-01
Date de disponibilité au public 2016-12-08
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Fournier, Jean-Claude
  • Benoit, Bernard
  • Wendling, Bertrand
  • Kudelski, Andre

Abrégé

An embodiment takes the form of an accessory for attachment to a communication device, the accessory comprising a microphone disposed on the accessory to detect sound, a cryptographic module disposed on the accessory in communication with the microphone to generate encrypted audio data based on the detected sound, a communication interface disposed on the accessory in communication with the cryptographic module configured to convey the encrypted audio data to the communication device, and an audio-sensor inhibitor arranged to be positioned adjacent to a communication-device audio sensor.

Classes IPC  ?

  • G10L 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
  • G10L 21/0208 - Filtration du bruit
  • G06F 1/16 - TRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES - Détails non couverts par les groupes et - Détails ou dispositions de structure

13.

METHOD AND SYSTEM FOR SEARCHING FOR AT LEAST A SPECIFIC DATUM IN A USER UNIT

      
Numéro de document 02924017
Statut En instance
Date de dépôt 2016-03-18
Date de disponibilité au public 2016-09-26
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Aumasson, Jean-Philippe

Abrégé

The present disclosure concerns a method for searching for at least a specific datum among data stored in a permanent memory (14) of a user unit (11) linked to a central authority (10). This method comprising: ¨ receiving in said user unit (11), a processing key (PK) derived, in said central authority (10), by means of a key derivation function applied on at least a secret piece of information, said key derivation function being a first iterative one-way function; ¨ storing said processing key (PK) in a temporary memory (16) of the user unit (11); ¨ receiving from said central authority (10), said at least one specific datum converted by a second one-way function using said processing key (PK); ¨ in the user unit(11), converting at least a part of the data stored in the permanent memory (14) of the user unit, by said second one-way function and said processing key; ¨ in the user unit (11), comparing said converted at least one specific datum received from the central authority (10) with the converted data from the permanent memory (14) of the user unit, thereby providing a search result; ¨ deleting said processing key (PK) from the temporary memory (16) of the user unit (11). The present disclosure further concerns a system comprising a central authority (10) and at least a user unit (11), for implementing the method described above.

Classes IPC  ?

  • G06F 16/903 - Requêtes
  • G06F 21/62 - Protection de l’accès à des données via une plate-forme, p.ex. par clés ou règles de contrôle de l’accès
  • G06F 12/00 - Accès à, adressage ou affectation dans des systèmes ou des architectures de mémoires

14.

SECURING CONTACTLESS PAYMENT PERFORMED BY A MOBILE DEVICE

      
Numéro de document 02969153
Statut En instance
Date de dépôt 2015-12-17
Date de disponibilité au public 2016-06-23
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Pelletier, Herve

Abrégé

The method, the mobile device, and the payment terminal of the invention relate to security of contactless payment performed during a purchase of products or services by using a short-range wireless communication between the mobile device and the payment terminal. Various external parameters associated to the payment transaction may be exchanged between the mobile device and the payment terminal. Preferred embodiments comprise external parameters such as respective positions of the mobile device and the payment terminal, time stamps related to transaction processing time or identifiers of each the mobile device and the payment terminal. Difference values related to these external parameters are verified by both the mobile device and the payment terminal by carrying out comparison with reference values before validation of the payment transaction by the payment terminal.

Classes IPC  ?

  • G06Q 20/32 - Architectures, schémas ou protocoles de paiement caractérisés par l'emploi de dispositifs spécifiques utilisant des dispositifs sans fil
  • G06Q 20/40 - Autorisation, p.ex. identification du payeur ou du bénéficiaire, vérification des références du client ou du magasin; Examen et approbation des payeurs, p.ex. contrôle des lignes de crédit ou des listes négatives

15.

DEVICE KEYS PROTECTION

      
Numéro de document 02968452
Statut En instance
Date de dépôt 2015-12-08
Date de disponibilité au public 2016-06-16
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Hunacek, Didier
  • Macchetti, Marco
  • Fischer, Nicolas

Abrégé

A method to protect a device key in a device comprising at least one secure element locally connected to at least one time programmable memory storing a global value in form of a bit string comprising locked bits and unlocked bits. The locked bits are irreversibly pre-programmed in the one-time-programmable memory during an initialization phase of the device while the unlocked bits remaining in an initial state may be programmable by the secure element. The secure element is configured to generate, at initialization of the device, a device specific value by using the global value, program the device specific value previously obtained in the one time programmable memory, and erase the global value by programming the unlocked bits of the corresponding bit string. A further object of the disclosure includes a device configured to carry out the method.

Classes IPC  ?

  • G06F 21/44 - Authentification de programme ou de dispositif

16.

METHOD AND GRAPHIC PROCESSOR FOR MANAGING COLORS OF A USER INTERFACE

      
Numéro de document 02968472
Statut En instance
Date de dépôt 2015-12-11
Date de disponibilité au public 2016-06-16
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Vadhri Venkata, Ratnam
  • Sahi, Gaurav
  • Prabhu, Chawandi
  • Burckard, Antoine

Abrégé

An automated method and a graphic processor for managing colors for a user interface to be displayed over at least one multimedia frame provided by an electronic device. The user interface comprises at least one graphical item having at least one predetermined color. The method comprises steps of: analyzing, by a graphic processor of the electronic device, the digital multimedia content comprising the at least one multimedia frame, extracting, from said digital multimedia content, data blocks defining an array of dominant colors in at least a part of the at least one multimedia frame, filtering the array of dominant colors of the part of at least one multimedia frame according to at least one predefined criterion managing color selection, obtaining a resulting array of dominant colors, generating, by a user interface generator coupled to the graphic processor, at least one graphical item by applying at least one dominant color from the resulting array of dominant colors to said at least one graphical item, said at least one dominant color being selected to be visible in the part of the at least one multimedia frame whereon the at least one graphical item is displayed.

Classes IPC  ?

  • G06T 11/00 - Génération d'images bidimensionnelles [2D]
  • G06T 11/40 - Remplissage d'une surface plane par addition d'attributs de surface, p.ex. de couleur ou de texture

17.

BLOCK CRYPTOGRAPHIC METHOD FOR ENCRYPTING/DECRYPTING MESSAGES AND CRYPTOGRAPHIC DEVICES FOR IMPLEMENTING THIS METHOD

      
Numéro de document 02968038
Statut En instance
Date de dépôt 2015-12-01
Date de disponibilité au public 2016-06-09
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Wyseur, Brecht

Abrégé

A block cipher method and apparatus using round repetition for providing, from a plaintext message (10), a ciphertext message (50) and a global tag (52) is disclosed. The plaintext message is converted into a plurality of ordered plaintext blocks (11) which are successively processed during a round for computing: - a cryptogram (30) by encrypting input data (20) using a single cryptographic key, said cryptogram comprising a first segment (31) and a second segment (32) - a ciphertext block (51) by performing a first operation (41) using, as operands: said first segment (31) said current plaintext block (11) and said second segment (32). At each next round said input data is newly determined based on the current ciphertext block and an updated reproducible data. The ciphertext message is determined by concatenating the ciphertext blocks and the global tag by a second operation (42) using computed authentication local tags as operands.

Classes IPC  ?

  • H04L 9/06 - Dispositions pour les communications secrètes ou protégées l'appareil de chiffrement utilisant des registres à décalage ou des mémoires pour le codage par blocs, p.ex. système DES
  • H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système

18.

MANAGING COMMUNICATION EXPLOITATION IN GLOBAL ORGANIZATIONS

      
Numéro de document 02912234
Statut En instance
Date de dépôt 2015-11-18
Date de disponibilité au public 2016-05-18
Propriétaire NAGRAVISION SA (Suisse)
Inventeur(s) Morten, Glenn

Abrégé

Techniques disclosed herein integrate communication mechanisms of a business or government with time management/calendar systems having knowledge of an employee's work schedule and geo-location, with a set of rules usable to selectively store and/or forward work related communications to an employee, while enabling overrides for emergencies, preventing employee self-exploitation, and monitoring for compliance. When a work related communications is sent towards an employee, the system receives the communication, and evaluates the communication based on the employee's work schedule, geo- location, and any other restrictions within the set of rules. When it is determined that the communications should be restricted from being sent, and no override to the restrictions is identified, then the communication is scheduled for transmission to the employee at a later time. Overrides to the restrictions are logged and monitored for compliance to company or public policy.

Classes IPC  ?

  • G06Q 10/06 - Ressources, gestion de tâches, gestion d'hommes ou de projets, p.ex. organisation, planification, ordonnancement ou affectation de ressources en temps, hommes ou machines; Planification dans l'entreprise; Modèles organisationnels
  • G06Q 10/10 - Bureautique, p.ex. gestion informatisée de courrier électronique ou logiciels de groupe; Gestion du temps, p.ex. calendriers, rappels, décompte de réunions ou de temps
  • H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés
  • H04M 3/533 - Systèmes de messagerie vocale

19.

ACCELERATED IMAGE GRADIENT BASED ON ONE-DIMENSIONAL DATA

      
Numéro de document 02962512
Statut En instance
Date de dépôt 2015-10-02
Date de disponibilité au public 2016-04-07
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Newcombe, Patrick
  • Gore, Douglas Brunel

Abrégé

Methods and systems of generating an image gradient are presented. In one example, image data for generating a two-dimensional digital image is provided to a hardware graphics processor. The image data may include a single pixel along a first direction of the digital image and multiple pixels along a second direction of the digital image. The pixels along the second direction of the digital image may include an image gradient. A one-dimensional stretching operation of the hardware graphics processor is initiated based on the image data to generate the digital image. In response to the stretching operation, the digital image may include multiple pixels along the first direction for each of the single pixels, wherein each of the multiple pixels along the first direction for a corresponding pixel of the single pixels comprises the corresponding pixel.

Classes IPC  ?

  • G06T 11/00 - Génération d'images bidimensionnelles [2D]
  • G06T 1/20 - Architectures de processeurs; Configuration de processeurs p.ex. configuration en pipeline

20.

RECEIVER-SIDE MARKING OF CONTENT FOR UNIQUE IDENTIFICATION

      
Numéro de document 02962483
Statut En instance
Date de dépôt 2015-09-18
Date de disponibilité au public 2016-03-31
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Thomas, Frederic
  • Pont, Jose-Emmanuel
  • Tran, Minh Son
  • Guitard, Frederic

Abrégé

The secure selection of at least one uniquely visually rendered media content stream(s) by a receiver of streams may allow enhanced fingerprinting of media content. The stream(s) may be visually rendered, and fingerprint marks inserted, using the preprocessing techniques of explicit insertion, implicit insertion, and object modification. In particular, multiple media content streams of the same event and signaling information may be received by a receiver. Each media content stream of the multiple of the media content streams may include a unique rendering of the media content stream. The receiver may be associated with a unique identifier (ID). At least one media content stream of the multiple media content streams may be selected using the receiver. The selected at least one media content stream of the multiple media content streams may be provided to a display.

Classes IPC  ?

  • H04N 21/434 - Désassemblage d'un flux multiplexé, p.ex. démultiplexage de flux audio et vidéo, extraction de données additionnelles d'un flux vidéo; Remultiplexage de flux multiplexés; Extraction ou traitement de SI; Désassemblage d'un flux élémentaire mis en paquets
  • G06T 1/00 - Traitement de données d'image, d'application générale

21.

TASK-BASED PAYMENT FOR CONTENT

      
Numéro de document 02958842
Statut En instance
Date de dépôt 2015-08-24
Date de disponibilité au public 2016-03-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Schwarz, Christian

Abrégé

Methods and systems of paying for content, such as, for example, audio and/or video content, are presented. In an example method, a task to be executed using at least one device resource associated with a user device is provided. Also, the task is to be executed during streaming of a content item. The streaming of the content item to the user device is caused to terminate in response to a determination that the execution of the task using the at least one device resource has been terminated.

Classes IPC  ?

  • G06Q 20/00 - Architectures, schémas ou protocoles de paiement
  • H04N 21/254 - Gestion au sein du serveur de données additionnelles, p.ex. serveur d'achat ou serveur de gestion de droits
  • G06Q 20/08 - Architectures de paiement
  • G06Q 20/22 - Schémas ou modèles de paiement
  • G06Q 30/00 - Commerce, p.ex. achat ou vente, ou commerce électronique
  • H04L 12/14 - Dispositions pour la taxation

22.

INTELLIGENT CONTENT QUEUING FROM A SECONDARY DEVICE

      
Numéro de document 02958843
Statut En instance
Date de dépôt 2015-08-27
Date de disponibilité au public 2016-03-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Jenkins, David

Abrégé

Example embodiments provide systems and methods for managing intelligent content queuing from a secondary device for content delivery to a primary device. A content queuing system on the secondary device generates and displays a playlist interface on the secondary device. A selection of a content item to be added to a playlist is received. The content queuing system determines that addition of the content item causes a live content item to overlap with an on-demand content item on the playlist. As a result, the content queuing system creates at least two segments for the on-demand content item. The live content item is positioned between the first and a second segment on the playlist. The first segment is scheduled to end at a start time of the live content item and the second segment is scheduled to begin at an ending time of the live content item.

Classes IPC  ?

  • H04N 21/431 - Génération d'interfaces visuelles; Rendu de contenu ou données additionnelles

23.

MITIGATION OF COLLUSION ATTACKS AGAINST WATERMARKED CONTENT

      
Numéro de document 02957995
Statut En instance
Date de dépôt 2015-08-13
Date de disponibilité au public 2016-02-18
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Morten, Glenn
  • Fish, Charles

Abrégé

Media content containing a substantially invisible watermark and/or a fingerprint may be redistributed/retransmitted in a way that bypasses bypass the detectability of a hidden or invisible watermark or fingerprint. In particular, a first segment of media content may be received by a first receiver and a second segment of media content may be received by a second server. The first and second segments may be stored on a storage device. The first and second segments may be made available to a client in the form of a concatenated media content.

Classes IPC  ?

  • H04N 19/467 - Inclusion d’information supplémentaire dans le signal vidéo pendant le processus de compression caractérisée par le caractère invisible de l’information incluse, p.ex. un filigrane
  • G10L 19/018 - Mise en place d’un filigrane audio, c. à d. insertion de données inaudibles dans le signal audio
  • H04N 19/00 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques
  • G10L 19/00 - Techniques d'analyse ou de synthèse de la parole ou des signaux audio pour la réduction de la redondance, p.ex. dans les vocodeurs; Codage ou décodage de la parole ou des signaux audio utilisant les modèles source-filtre ou l’analyse psychoacoustique

24.

A PHYSICAL INTERFACE MODULE

      
Numéro de document 02893904
Statut En instance
Date de dépôt 2015-06-08
Date de disponibilité au public 2015-12-20
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Perrine, Jerome
  • Goupil, Herve
  • Van Riek, Maurice

Abrégé

The present invention relates to physical interfaces, especially those used on consumer electronics devices. A processor in which an embodiment of the disclosed invention is deployed comprises a physical interface for connecting to and communicating with a peripheral device, the peripheral device being configured to operate according to a standard communications protocol or to a different protocol which is adapted to have a more bandwidth-efficient performance. The processor comprises means for detecting which of the two protocols the attached peripheral device uses and means to configure the physical interface to operate according to the detected protocol. The invention allows for new, bandwidth-efficient communications protocols to be executed across existing standardized physical interface hardware, thereby allowing for easier acceptance of the new protocols within the consumer electronics industry. Bandwidth-efficient communications protocols advantageously allow for more convenient transfer of media content or for big-data applications to be more conveniently handled.

Classes IPC  ?

  • G06F 13/12 - Commande par programme pour dispositifs périphériques utilisant des matériels indépendants du processeur central, p.ex. canal ou processeur périphérique
  • G06F 13/42 - Protocole de transfert pour bus, p.ex. liaison; Synchronisation

25.

CRYPTOGRAPHIC METHOD FOR SECURELY EXCHANGING MESSAGES AND DEVICE AND SYSTEM FOR IMPLEMENTING THIS METHOD

      
Numéro de document 02893067
Statut En instance
Date de dépôt 2015-05-26
Date de disponibilité au public 2015-12-12
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Pelletier, Herve

Abrégé

A method for securely exchanging messages between at least two devices each storing a shared secret key is provided. At each device a random number is generated, then sent it to the other devices. A first key is determined by a first operation based onto said secret key and each random number. A second key is determined based on said first key and said random numbers. At a sending device a pseudo message is determined on the basis of the message and said random numbers. A cryptogram is calculated and sent on the basis of said pseudo message and said second key. At the receiving device the cryptogram is decrypted by means of said second key, then the message is retrieved from said pseudo message.

Classes IPC  ?

  • H04L 9/16 - Dispositions pour les communications secrètes ou protégées utilisant plusieurs clés ou algorithmes qui sont changés pendant l'opération
  • H04L 9/06 - Dispositions pour les communications secrètes ou protégées l'appareil de chiffrement utilisant des registres à décalage ou des mémoires pour le codage par blocs, p.ex. système DES
  • H04L 12/58 - Systèmes de commutation de messages

26.

A METHOD AND SYSTEM TO CREATE A SECURE COMMUNICATION CHANNEL BETWEEN TWO SECURITY MODULES

      
Numéro de document 02940271
Statut En instance
Date de dépôt 2015-03-11
Date de disponibilité au public 2015-09-17
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Melia, Telemaco
  • Sarda, Pierre

Abrégé

Techniques for pairing two different security modules that use two different encryption technologies for operation in two different networks include generation and transmission of a secret to both the security modules via their respective communication networks. In one advantageous aspect, one of the security module, which may be prone for duplication or theft, is logically tethered to the other security module via the pairing. For example, after pairing is successfully performed, the first security module may be usable in a wide area network only when its presence in a local communication connection, such as a home network of a subscriber, or a peer-to-peer or a near field communication link, can be detected and verified by the second security module.

Classes IPC  ?

  • H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
  • H04W 12/08 - Sécurité d'accès
  • H04W 92/08 - Interfaces entre des dispositifs formant réseau hiérarchiquement différents entre un usager et un dispositif terminal
  • H04N 21/2347 - Traitement de flux vidéo élémentaires, p.ex. raccordement de flux vidéo ou manipulation de graphes de scènes MPEG-4 impliquant le cryptage de flux vidéo
  • H04W 76/14 - Gestion de la connexion Établissement de la connexion Établissement de la connexion en mode direct
  • H04L 9/12 - Dispositifs de chiffrement d'émission et de réception synchronisés ou initialisés d'une manière particulière

27.

DEVICE AND METHOD TO MARK DIGITAL AUDIO OR AUDIO AND/OR VIDEO CONTENT

      
Numéro de document 02927034
Statut En instance
Date de dépôt 2014-11-03
Date de disponibilité au public 2015-05-07
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Sarda, Pierre
  • Aumasson, Jean-Philippe
  • Tran, Minh Son

Abrégé

An aim of the present invention is to propose an improved technique of mark insertion in digital audio or audio and/or video content data by managing and minimizing the number of modification and therefore reducing the undesirable distortion of inserted marks into audio and/or video content.A receiver device including at least one processor, memories, a descrambler and decoders modules is configured to produce a sequence of elementary media content packets. The receiver device further comprises a marker unit configured to mark by modifying data in the sequence of elementary media content packets according to a pattern defined by an internal parameter associated to the receiving device. The marker unit is configured to determine, in the sequence of elementary media content packets at least one segment of a predetermined length and starting at a predetermined position in the sequence, to divide the segment into a predetermined number of contiguous windows including data of all or part of at least one elementary media content packet. Each window in the segment defined in the sequence of elementary media content packets is indexed by an index defining a position of a window in the segment. The marker unit codes the internal parameter by applying a mathematical transformation function, obtaining a resulting bits string, calculates position indices of a predetermined number of windows on the basis of all or a portion of the resulting bits string, said predetermined number of windows being lower than the number of windows in the segment, and modifies data in the windows designated by the calculated position indices. The windows including modified data and the windows including original data form within the segment of elementary media content packets a unique pattern representing the internal parameter associated to the receiving device.

Classes IPC  ?

  • H04N 21/418 - Carte externe destinée à être utilisée en combinaison avec le dispositif client, p.ex. pour l'accès conditionnel
  • H04N 21/434 - Désassemblage d'un flux multiplexé, p.ex. démultiplexage de flux audio et vidéo, extraction de données additionnelles d'un flux vidéo; Remultiplexage de flux multiplexés; Extraction ou traitement de SI; Désassemblage d'un flux élémentaire mis en paquets
  • H04N 21/439 - Traitement de flux audio élémentaires
  • H04N 21/4402 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant des opérations de reformatage de signaux vidéo pour la redistribution domestique, le stockage ou l'affichage en temps réel
  • H04N 21/8358 - Génération de données de protection, p.ex. certificats impliquant des filigranes numériques
  • H04N 21/845 - Structuration du contenu, p.ex. décomposition du contenu en segments temporels

28.

METHOD AND DEVICE FOR DISTRIBUTING MULTIMEDIA LICENCES WITHIN A DISTRIBUTION SYSTEM OF A SECURED MULTIMEDIA SERVICE

      
Numéro de document 02928506
Statut Délivré - en vigueur
Date de dépôt 2014-10-09
Date de disponibilité au public 2015-05-07
Date d'octroi 2021-06-29
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Lugeon, Blaise
  • Bieber, Yann

Abrégé

ABSTRACT A method for distributing multimedia licenses by a server to a plurality of user devices in a distribution system of a multimedia service, the access of which is protected by a first protection is provided. This method comprising verifying that computing resources used by the server do not exceed a maximal threshold, if so, generating and then transmitting regular licenses including said first protection in response to user device requests, otherwise switching the server to a singular mode of distribution aiming to protect the access to the multimedia service using a second protection, independent of the first protection; to generate and to transmit to the devices one singular license comprising the second protection; to verify that the computing resources do not exceed the maximal threshold, if so, to switch from the singular mode to a regular mode so as to protect the access to the multimedia content using only said first protection. CA 2928506 2019-1.0-09

Classes IPC  ?

  • H04N 21/23 - Traitement de contenu ou de données additionnelles; Opérations élémentaires de serveur; Intergiciel de serveur

29.

METHOD FOR CONTROLLING ACCESS TO BROADCAST CONTENT

      
Numéro de document 02923320
Statut En instance
Date de dépôt 2014-09-04
Date de disponibilité au public 2015-03-19
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Servignat, David
  • Pont, Jose-Emmanuel
  • Thomas, Frederic
  • Jantz, Scott
  • Livay, Nir

Abrégé

The present invention relates to the field of controlling access to audiovisual content broadcast to a receiver, in particular control relative to the location of the receiver. The present invention proposes a method for controlling access to content broadcast to a receiver, said receiver being part of a geographical access control system comprising verification means and security means, the method comprising the following steps: - acquiring a current location using a portable device, - transferring the current location to the verification means, - extracting a set of location data defining at least one zone from a memory of the verification means, - using the verification means to verify that the current location is included in said zone, and if so, sending a reception authorisation message for the audiovisual content to the security means relative to the receiver.

Classes IPC  ?

  • H04N 21/258 - Gestion de données liées aux clients ou aux utilisateurs finaux, p.ex. gestion des capacités des clients, préférences ou données démographiques des utilisateurs, traitement des multiples préférences des utilisateurs finaux pour générer des données co
  • H04N 21/266 - Gestion de canal ou de contenu, p.ex. génération et gestion de clés et de messages de titres d'accès dans un système d'accès conditionnel, fusion d'un canal de monodiffusion de VOD dans un canal multidiffusion
  • H04N 21/41 - Structure de client; Structure de périphérique de client
  • H04N 21/414 - Plate-formes spécialisées de client, p.ex. récepteur au sein d'une voiture ou intégré dans un appareil mobile
  • H04N 21/418 - Carte externe destinée à être utilisée en combinaison avec le dispositif client, p.ex. pour l'accès conditionnel
  • H04N 21/422 - Périphériques d'entrée uniquement, p.ex. système de positionnement global [GPS]
  • H04N 21/4223 - Caméras
  • H04N 21/45 - Opérations de gestion réalisées par le client pour faciliter la réception de contenu ou l'interaction avec le contenu, ou pour l'administration des données liées à l'utilisateur final ou au dispositif client lui-même, p.ex. apprentissage des préféren
  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]
  • H04N 21/4627 - Gestion de droits

30.

METHODE POUR LA PROTECTION DE CLES DE DECHIFFREMENT DANS UN DECODEUR ET DECODEUR POUR LA MISE EN OEUVRE DE CETTE METHODE

      
Numéro de document 02916818
Statut En instance
Date de dépôt 2014-07-04
Date de disponibilité au public 2015-01-22
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Macchetti, Marco
  • Perrine, Jerome
  • Servet, Patrick
  • Hunacek, Didier

Abrégé

Méthode pour sécuriser des mots de contrôle (CW) au sein d'un décodeur (10) en charge de désembrouiller un contenu numérique protégé par ces mots de contrôle, comprenant les étapes suivantes: - pour chaque unité de désembrouillage (14) que compte ce décodeur, charger dans un répertoire (22), une clé d'appariement (PK) référencée par un identifiant (ID) l'associant à une unité de désembrouillage, - réceptionner au moins un mot de contrôle chiffré et référencé par une indication (D) permettant d'identifier l'unité de désembrouillage à qui il est destiné, - déchiffrer le mot de contrôle au moyen d'une première clé partagée avec un module de sécurité (30), - identifier dans le répertoire la clé d'appariement dont l'identifiant (ID) correspond à l'indication de destination (D) associée au mot de contrôle, - chiffrer ce mot de contrôle à l'aide de cette clé d'appariement, - stocker dans un registre (15) le mot de contrôle d'une manière chronologique et référencée.

Classes IPC  ?

  • H04N 21/438 - Interfaçage de la voie descendante du réseau de transmission provenant d'un serveur, p.ex. récupération de paquets MPEG d'un réseau IP
  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]

31.

SYSTEM AND METHOD FOR USER AUTHENTICATION

      
Numéro de document 02913444
Statut Délivré - en vigueur
Date de dépôt 2014-05-19
Date de disponibilité au public 2014-12-11
Date d'octroi 2021-06-22
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Aumasson, Jean-Philippe

Abrégé

The present application relates to systems or methods for a user authentication when said user whishes to access a remote service. This invention proposes a method for a user authentication implementing a first server connected to a public network, and a second server connected to the first server but no connected to the public network, this method comprising a step of enrolment comprising: - receiving by the first server an reference identifier U and of a reference password P, and transmission of this information to the second server, - loading a security parameter R by the second server, and calculating a first cryptogram H by a one-way function Hash on the reference identifier U, the reference password P, and the security parameter R, - encrypting at least the reference identifier U and the password P by using an asymmetrical encryption method, and storing the encrypted data by the second server, - returning the first cryptogram H to the first server and storing said cryptogram by the first server, and a verification step of an user comprising: - receiving by the first server of the current identifier IT and of the current password P', and transmission of said information to the second server, - calculating a second cryptogram H' by the one-way function Hash on the current identifier U', the current password P', and the security parameter R by the second server, - returning the second cryptogram H' to the first server and verification that the first cryptogram is included in the database, if not, generating an error message.

Classes IPC  ?

  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole

32.

METHOD AND DEVICE TO EMBED WATERMARK IN UNCOMPRESSED VIDEO DATA

      
Numéro de document 02908395
Statut Délivré - en vigueur
Date de dépôt 2014-04-11
Date de disponibilité au public 2014-10-30
Date d'octroi 2021-10-12
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Hunacek, Didier
  • Tran, Minh Son
  • Sarda, Pierre

Abrégé

The aim of the present invention is to enforce the watermarking on a content received by a client device, in particular to uncompressed video content. A method to watermark an uncompressed content received at a client device in a compressed form and encrypted by at least one content key (CK). The CK as well as watermark instruction forming CAM data. The CAM Data is encrypted by a transmission key and comprising at least one signature to authenticate the CAM Data. The client device comprising a Conditional Access Module (CAM) in charge of the CAM Data, a Descrambler (DSC) having an input to receive the encrypted compressed content and an output to produce an compressed content. A decoder converts the compressed content into uncompressed content, a Watermark inserter connected to the output of the Decoder. A Secure Elernent is connected with a Watermark inserter and a Secure Activation module.

Classes IPC  ?

  • H04N 21/8355 - Génération de données de protection, p.ex. certificats impliquant des données sur l’utilisation, p.ex. nombre de copies ou de visualisations autorisées
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo
  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé
  • H04N 21/8358 - Génération de données de protection, p.ex. certificats impliquant des filigranes numériques

33.

METHOD FOR WATERMARKING MEDIA CONTENT AND SYSTEM FOR IMPLEMENTING THIS METHOD

      
Numéro de document 02908401
Statut En instance
Date de dépôt 2014-04-11
Date de disponibilité au public 2014-10-30
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Hunacek, Didier
  • Servet, Patrick
  • Macchetti, Marco

Abrégé

The present invention refers to a method and a system (20) for watermarking digital media content (1) received by application software (APP) in a form of at least one encrypted sample (15). The digital media content (1) is related to metadata (10) assigned to each sample (15). The latter is encrypted by means of a sample key (Kc'). The metadata (10) comprises first data (11), second data (12) and a digital signature (13) resulting from the signature of said first and second data. The first data (11) comprises at least a content key (Kc) and watermarking metadata (WM) and at least said first data (11) is encrypted by a transport key (KT). The second data (12) comprises an initialization vector (IV) so that the content key (Kc) and the initialization vector (IV) form a unique pair of cryptographic data equivalent to the sample key (Kc'). The application software (APP) communicates with a secure environment (30) in charge of handling said metadata (10). The watermarking of the digital media content (1) is performed by the following steps: - instructing the application software (APP) to extract the metadata (10) from the digital media content (1) before transmitting the metadata (10) to the secure environment (30), - decrypting at least a part of the first data (11) by means of the transport key (KT), - verifying the authentication of said digitally signed data (11, 12) and in the case of positive outcome, then transmitting the content key (Kc) and the initialization vector (IV) to a descrambler (37) and transmitting the watermarking metadata (WM) to a watermarking unit (39), - transmitting the digital media content (1) to the descrambler (37) for descrambling each sample (15) by means of said pair of cryptographic data, - transmitting each descrambled sample (15') to the watermarking unit (39) for digitally marking it by means of at least said watermarking metadata, - transmitting the sample (15', 15") from the watermarking unit (39) to the application software (APP) or to a secure media path for rendering purposes.

Classes IPC  ?

  • H04N 21/8355 - Génération de données de protection, p.ex. certificats impliquant des données sur l’utilisation, p.ex. nombre de copies ou de visualisations autorisées
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo
  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé
  • H04N 21/8358 - Génération de données de protection, p.ex. certificats impliquant des filigranes numériques

34.

METHOD TO WATERMARK A COMPRESSED CONTENT ENCRYPTED BY AT LEAST ONE CONTENT KEY

      
Numéro de document 02908404
Statut Délivré - en vigueur
Date de dépôt 2014-04-28
Date de disponibilité au public 2014-10-30
Date d'octroi 2021-10-12
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Hunacek, Didier
  • Servet, Patrick
  • Tran, Minh Son
  • Sarda, Pierre

Abrégé

The aim of the present invention is to enforce the watermarking on a content received by a client device, in particular to compressed video content. The present invention proposes a method to watermark a compressed content encrypted by at least one content key (CA key), said content key as well as pre-marking data forming CAS data, said CAS Data being encrypted by a transmission key and comprising at least one signature to authenticate all or part of the CAS Data, said compressed content being received by a client device comprising : - a Descrambler (103) having an input to receive the encrypted compressed content and an output to produce an compressed content, - a WM inserter (104) directly connected to the output of the Descrambler, said Descrambler and said WM inserter being connected with the Conditioner (200), said Conditioner executing the following steps : - receiving the CAS Data, - decrypting the CAS Data with the transmission key, - verifying the signature of the CAS Data, and if the signature is valid, - transferring the content key (CA key) to the descrambler (103) and the pre-marking data to the WM inserter, - watermarking by the WM inserter, the decrypted content received by the descrambler using the pre-marking data and the identifier.

Classes IPC  ?

  • H04N 21/8355 - Génération de données de protection, p.ex. certificats impliquant des données sur l’utilisation, p.ex. nombre de copies ou de visualisations autorisées
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo
  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé
  • H04N 21/8358 - Génération de données de protection, p.ex. certificats impliquant des filigranes numériques

35.

SECURITY DEVICE FOR PAY-TV RECEIVER DECODER

      
Numéro de document 02868232
Statut Délivré - en vigueur
Date de dépôt 2013-04-02
Date de disponibilité au public 2013-10-03
Date d'octroi 2019-08-06
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Burckard, Antoine

Abrégé

The aim of the present invention is to ensure that a security module or conditional access module ("module") is used together with an authorised receiver/decoder to access pay TV content. The module uses a wireless transceiver to read an authorisation message from a wireless tag attached to the receiver/decoder to which it is connected. The authorisation message contains an identifier of the module and is encrypted with a system key. If the obtained identifier in the authorisation message is not the one of the security module, operation of the security module is blocked. The authorisation message is written by a communications device (located i.e. in a shop selling receiver/decoder devices) to a wireless tag attached to the receiver/decoder. Thus a sold receiver/decoder can be immediately operated together with a specific module.

Classes IPC  ?

  • H04N 21/418 - Carte externe destinée à être utilisée en combinaison avec le dispositif client, p.ex. pour l'accès conditionnel
  • H04N 21/426 - Structure de client; Structure de périphérique de client Éléments internes de client
  • H04N 7/16 - Systèmes à secret analogiques; Systèmes à abonnement analogiques

36.

METHOD AND SYSTEM TO CONFIRM CO-LOCATION OF MULTIPLE DEVICES WITHIN A GEOGRAPHIC AREA

      
Numéro de document 02856598
Statut Délivré - en vigueur
Date de dépôt 2012-11-27
Date de disponibilité au public 2013-06-06
Date d'octroi 2021-08-10
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Wilson, Robin

Abrégé

A method and system to confirm co-location of multiple devices within a geographic area, while filtering spurious alarms, is provided. An example method comprises processing first GPS data obtained from a first GPS sensor and second GPS data obtained from a second GPS sensor. A sensing data evaluator compares a sensing error from the first GPS data and a sensing error from the second GPS data. Based on the result of the comparing, the sensing data evaluator determines whether the sensing errors are to be ignored. An approach where an alarm that otherwise would be generated is disabled or canceled may be termed as filtering spurious alarms.

Classes IPC  ?

  • H04N 7/16 - Systèmes à secret analogiques; Systèmes à abonnement analogiques
  • G01S 19/14 - Récepteurs spécialement adaptés pour des applications spécifiques
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo
  • H04N 21/45 - Opérations de gestion réalisées par le client pour faciliter la réception de contenu ou l'interaction avec le contenu, ou pour l'administration des données liées à l'utilisateur final ou au dispositif client lui-même, p.ex. apprentissage des préféren
  • H04N 21/462 - Gestion de contenu ou de données additionnelles, p.ex. création d'un guide de programmes électronique maître à partir de données reçues par Internet et d'une tête de réseau ou contrôle de la complexité d'un flux vidéo en dimensionnant la résolution o
  • H04N 21/4782 - Navigation sur le Web
  • H04N 7/167 - Systèmes rendant le signal de télévision inintelligible et ensuite intelligible

37.

METHOD, CRYPTOGRAPHIC SYSTEM AND SECURITY MODULE FOR DESCRAMBLING CONTENT PACKETS OF A DIGITAL TRANSPORT STREAM

      
Numéro de document 02856456
Statut Délivré - en vigueur
Date de dépôt 2012-11-20
Date de disponibilité au public 2013-05-30
Date d'octroi 2020-01-14
Propriétaire NAGRAVISION S.A. (Canada)
Inventeur(s)
  • Wendling, Bertrand
  • Le Buhan, Corinne

Abrégé

Method and cryptographic system for descrambling content packets (15) included within a digital transport stream (10) together with conditional access messages (12) and header data (15') belonging to these content packets (15). This method requires a deciphering algorithm (35), processed by a descrambler (36) of a multimedia unit (30), using an initialization vector (33) as first input and a control word (13) as second input. This unit is connected with a security module (40) for processing the conditional access messages (12) and extracting thereof said control words (13). This initialization vector (33), or intermediate data (33') to determine the initialization vector (33), is the result of cryptographic function (44) based on at least one variable (43) extracted from the digital transport stream (10) and processed into the security module (40).

Classes IPC  ?

  • H04N 21/418 - Carte externe destinée à être utilisée en combinaison avec le dispositif client, p.ex. pour l'accès conditionnel
  • H04N 21/426 - Structure de client; Structure de périphérique de client Éléments internes de client
  • H04N 21/435 - Traitement de données additionnelles, p.ex. décryptage de données additionnelles ou reconstruction de logiciel à partir de modules extraits du flux de transport
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo
  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]

38.

METHOD TO CONTROL THE ACCESS OF PERSONAL DATA OF A USER

      
Numéro de document 02847326
Statut Délivré - en vigueur
Date de dépôt 2012-08-30
Date de disponibilité au public 2013-03-07
Date d'octroi 2020-10-20
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Nicolas, Christophe

Abrégé

There is a need for a system and method that is designed to give full and continued control of his data by a user, gain the trust of the average individual, encouraging such individual to become an open-minded and trustful user of such system. It is proposed a method to control the access of personal data of a user by a trusted centre comprising at least one database comprising for a specific user, memory locations for personal data, access conditions associated to the personal data and management data comprising at least a counter, - loading by a user into the database of the trusted center, its personal data and assigning access conditions to said data, said personal data being divided into at least two categories having two different access conditions, each category being associated with a user's value, - requesting access to the trusted centre by a third party to the personal data of a plurality of users, said request comprising search criteria, - executing by the trusted center the search criteria on the personal data of the users so as to determine a first set of users matching the search criteria, - returning to the third party information showing the quantity of the first set of users matching the criteria, as well as the sum of the user's value of each user of the first set, - acknowledging all of part of the sum by the third party, thus defining a second set of users that can comprise all or part of the first set, - returning the personal data of the second set of user for which the sum covers the accumulated values of the extracted users, - updating the counter of the second set of users with the content of the value of their respective personal data.

Classes IPC  ?

  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
  • G06F 21/00 - Dispositions de sécurité pour protéger les calculateurs, leurs composants, les programmes ou les données contre une activité non autorisée

39.

A METHOD FOR PLAYING REPEATABLE EVENTS ON A MEDIA PLAYER

      
Numéro de document 02839236
Statut Délivré - en vigueur
Date de dépôt 2012-06-28
Date de disponibilité au public 2013-01-10
Date d'octroi 2019-05-21
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Le Pelerin, Alain
  • Piquet, Matthieu

Abrégé

An embodiment of the present invention may be deployed in a personal video player/recorder. According to different embodiments of the present invention provision is made to be able to play an alternative pre-stored content in place of a particular type of content received by the player within a transport stream comprising a plurality of types of content. Embodiments of the invention can be useful in providing targeted advertising, where, when combined with profiling techniques, alternative content of interest to a viewer can be substituted in the transport stream in place of the received content having the particular type. According to other embodiments of the present invention, computing resources and communication bandwidth use can be saved by playing pre-stored content instead of the received content of the particular type. Embodiments of the present invention provide for the maintenance of the pre-stored material by storing appropriate content as it is received in the transport stream or by deleting pre-stored content when deemed appropriate to do so.

Classes IPC  ?

  • H04N 5/00 - TRANSMISSION D'IMAGES, p.ex. TÉLÉVISION - Détails des systèmes de télévision
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo
  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]
  • G06Q 30/00 - Commerce, p.ex. achat ou vente, ou commerce électronique
  • H04N 5/445 - Circuits de réception pour visualisation d'information additionnelle
  • H04N 7/16 - Systèmes à secret analogiques; Systèmes à abonnement analogiques

40.

METHOD FOR HANDLING PRIVACY DATA

      
Numéro de document 02834785
Statut Délivré - en vigueur
Date de dépôt 2012-05-09
Date de disponibilité au public 2012-11-15
Date d'octroi 2019-06-18
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Burckard, Antoine

Abrégé

The present invention aims to improve data protection against illegal access by a strong differentiation of the security level specific on a type of data so that when the protection on a part of the data is violated, the remaining data are still inaccessible. A method for controlling access, via an open communication network, to user private data, comprising steps of: dividing the user private data into a plurality of categories, each category defining a privacy level of the data,encrypting the user private data of each category with a category key pertaining to the category of the data,attributing to a stakeholder an entity configured for accessing to at least one category of user private data, and authorizing the access to the at least one category of user private data for the entity of the stakeholder, by providing the stakeholder with the category keys required for decrypting the user private data of the corresponding category.

Classes IPC  ?

  • G06F 21/00 - Dispositions de sécurité pour protéger les calculateurs, leurs composants, les programmes ou les données contre une activité non autorisée
  • G06Q 50/06 - Fourniture d'électricité, de gaz ou d'eau

41.

ETHERNET DECODER DEVICE AND METHOD TO ACCESS PROTECTED CONTENT

      
Numéro de document 02832522
Statut Délivré - en vigueur
Date de dépôt 2012-04-19
Date de disponibilité au public 2012-10-26
Date d'octroi 2021-09-07
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Conus, Joel
  • Nicolas, Christophe

Abrégé

The present invention aims to address the issue of deploying costly hardware by proposing a content protection layer with an easy distribution capability to clients. The aim is achieved by an network device for descrambling an access controlled audio/video content stream, said network device being configured to be connected to a network router comprises a memory to store a unique address UA specific to the network device,an network input / output interface,a descrambler to descramble the audio/video content stream, and a watermark engine configured to watermark the descrambled audio/video content streamby applying the unique address. A further object of the invention is a method to access scrambled audio/video content stream in a local or roaming mode by a multimedia reception device connected via an IP network to a network router having an IP port connected to the network device.

Classes IPC  ?

  • H04N 21/222 - Serveurs secondaires, p.ex. serveur proxy ou tête de réseau de télévision par câble
  • H04N 21/226 - Composants internes du serveur
  • H04N 21/2347 - Traitement de flux vidéo élémentaires, p.ex. raccordement de flux vidéo ou manipulation de graphes de scènes MPEG-4 impliquant le cryptage de flux vidéo
  • H04N 21/418 - Carte externe destinée à être utilisée en combinaison avec le dispositif client, p.ex. pour l'accès conditionnel
  • H04N 21/61 - Structure physique de réseau; Traitement de signal
  • H04N 21/647 - Signalisation de contrôle entre des éléments du réseau et serveur ou clients; Procédés réseau pour la distribution vidéo entre serveur et clients, p.ex. contrôle de la qualité du flux vidéo en éliminant des paquets, protection du contenu contre une modification non autorisée dans le réseau ou surveillance de la charge du résea
  • H04N 21/8358 - Génération de données de protection, p.ex. certificats impliquant des filigranes numériques

42.

ELECTRONIC CARD HAVING AN EXTERNAL CONNECTOR

      
Numéro de document 02821060
Statut Délivré - en vigueur
Date de dépôt 2011-12-07
Date de disponibilité au public 2012-06-14
Date d'octroi 2017-03-28
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The smart card (98A) comprises an external connector (90), which is formed of an insulating support (6) and a plurality of external metal contact pads (4) arranged on the external face of said insulating support. The card body has a housing in which the external connector is arranged and includes an electronic unit and/or an antenna electrically connected to a plurality of internal metal contact pads (20), which are arranged underneath the external connector and respectively aligned with the plurality of external metal contact pads. The plurality of external metal contact pads are respectively electrically connected to the plurality of internal metal contact pads by a plurality of metal parts (100), which are each at least partially formed by a solder material and which traverse said insulating support through respective apertures (92). This plurality of metal parts is respectively covered by the plurality of external metal contact pads, which close the apertures on the external face of the insulating support, and respectively form connecting bridges between the rear surfaces of the plurality of external metal contact pads and the plurality of internal metal contact pads.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

43.

METHOD FOR SHARING DATA AND SYNCHRONIZING BROADCAST DATA WITH ADDITIONAL INFORMATION

      
Numéro de document 02807185
Statut Délivré - en vigueur
Date de dépôt 2011-08-02
Date de disponibilité au public 2012-02-09
Date d'octroi 2017-05-30
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Kudelski, Andre
  • Nicolas, Christophe

Abrégé

A method for sharing data and synchronizing broadcast data with additional information, the broadcast data and the additional information being provided by at least two distinct sources to a multimedia device. The method comprises steps of: receiving by a data extractor associated to the multimedia device broadcast data from a first source and extracting first metadata from the broadcast data, accessing by the multimedia device to additional information provided by a second source by using the first metadata and obtaining from the additional information second metadata and additional content data related to a content of the broadcast data, merging and synchronizing, by the multimedia device, the second metadata and the additional content data with the content of the broadcast data, and obtaining modified broadcast data,

Classes IPC  ?

  • H04N 21/462 - Gestion de contenu ou de données additionnelles, p.ex. création d'un guide de programmes électronique maître à partir de données reçues par Internet et d'une tête de réseau ou contrôle de la complexité d'un flux vidéo en dimensionnant la résolution o
  • H04N 21/8547 - Création de contenu impliquant des marquages temporels pour synchroniser le contenu

44.

SECURE REMOTE CONTROL FOR AUDIO/VIDEO RECEIVER/DECODER

      
Numéro de document 02803469
Statut Délivré - en vigueur
Date de dépôt 2011-07-22
Date de disponibilité au public 2012-02-02
Date d'octroi 2017-05-30
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Kudelski, Andre
  • Nicolas, Christophe

Abrégé

In order to limit the use of generic remote control devices, the invention relates to a system comprising a remote control device and a security device, both sharing a common key, algorithms or protocol specific to a pair formed by the remote control device and the security device. The remote control device comprises means to send wirelessly data to a receiver comprising the security device. The remote control device being paired with the security device is characterized in that data sent by the remote control device towards the receiver is specific to the pair formed by the remote control device and the security device, said remote control device comprising encryption means and a memory to store a specific key, said data being encrypted by the encryption means with the specific key, the security device comprising decryption means and a key corresponding to the specific key to decrypt the received data.

Classes IPC  ?

  • H04N 21/422 - Périphériques d'entrée uniquement, p.ex. système de positionnement global [GPS]
  • G06F 21/00 - Dispositions de sécurité pour protéger les calculateurs, leurs composants, les programmes ou les données contre une activité non autorisée
  • G08C 17/02 - Dispositions pour transmettre des signaux caractérisées par l'utilisation d'une voie électrique sans fil utilisant une voie radio
  • H04N 5/44 - Circuits de réception
  • H04N 7/167 - Systèmes rendant le signal de télévision inintelligible et ensuite intelligible

45.

SYSTEM AND METHOD TO PREVENT MANIPULATION OF TRANSMITTED VIDEO DATA

      
Numéro de document 02803518
Statut Délivré - en vigueur
Date de dépôt 2011-06-24
Date de disponibilité au public 2012-01-19
Date d'octroi 2017-03-21
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Kudelski, Andre
  • Nicolas, Christophe

Abrégé

The aim of the invention is to provide a solution to ensure that the content sent by the IRD is the content effectively displayed on the screen. It is then proposed a system to prevent manipulation of transmitted video data comprising an Integrated Receiver Decoder (IRD) receiving audio/video data, a display device (TV), said IRD comprising means to transmit an HDMI compliant audio/video data stream toward the display device. This system comprising: - means to define a variable area at a location of the image displayed on the display device, - means to store reference data corresponding to video data of said area which are sent to the display device. - means internal or external to the display device to extract the actual displayed video data of said area, - means to send, to said IRD, test data determined from said extracted video data, - means to compare said test data with said reference data, - means for switching an operating mode of the system from a standard mode to a disrupted mode in case of difference resulting from this comparison.

Classes IPC  ?

  • H04N 5/913 - Traitement du signal de télévision pour l'enregistrement pour la transposition
  • G11B 20/00 - Traitement du signal, non spécifique du procédé d'enregistrement ou de reproduction; Circuits correspondants
  • H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
  • H04N 7/16 - Systèmes à secret analogiques; Systèmes à abonnement analogiques
  • H04N 7/173 - Systèmes à secret analogiques; Systèmes à abonnement analogiques à deux voies, p.ex. l'abonné envoyant un signal de sélection du programme
  • H04N 7/24 - Systèmes pour la transmission de signaux de télévision utilisant la modulation par impulsions codées

46.

A DEVICE AND A METHOD FOR PERFORMING A CRYPTOGRAPHIC FUNCTION

      
Numéro de document 02734929
Statut Délivré - en vigueur
Date de dépôt 2011-03-23
Date de disponibilité au public 2011-10-08
Date d'octroi 2017-03-14
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Perrine, Jerome
  • Hautier, Roan

Abrégé

The present invention provides a method and an apparatus for encrypting and decrypting digital information while imparting a high level of security on the encrypted digital information. A mixed-mode digital-analogue encryption and decryption technique is proposed, which minimises the probability of an unintended recipient of the thus encrypted information being able to decrypt the information using known reverse engineering techniques.

Classes IPC  ?

  • G09C 5/00 - Appareils ou méthodes de chiffrement ou de déchiffrement non prévus dans les autres groupes de la présente sous-classe, p.ex. comportant la dissimulation ou la déformation de données graphiques telles que dessins, messages écrits ou imprimés
  • G06F 21/00 - Dispositions de sécurité pour protéger les calculateurs, leurs composants, les programmes ou les données contre une activité non autorisée
  • H04L 9/28 - Dispositions pour les communications secrètes ou protégées utilisant un algorithme de chiffrement particulier

47.

METHOD OF MANUFACTURING ELECTRONIC CARDS

      
Numéro de document 02725309
Statut Délivré - en vigueur
Date de dépôt 2010-12-14
Date de disponibilité au public 2011-06-28
Date d'octroi 2018-01-23
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The present invention concerns a method of manufacturing complex electronic cards each including an electronic device or assembly (40) formed of a first electronic unit (4) at least partially arranged in a window in a solid bottom layer of the card and a second electronic unit (10), incorporated in the body of the card, at least partially formed by a resin provided on the solid bottom layer In order to prevent the resin from flowing into a slit between the lateral wall of the window and the second unit inserted therein, a protective film is arranged to cover the edge of the rear face of the first unit and a zone peripheral to the aperture in the solid layer According to the invention, the electronic device or assembly (40) is first formed and then placed on the bottom solid layer. The protective film is arranged between the two units after or when the electronic device or assembly is formed Therefore according to the invention the protective film is formed, for example, of several parts (24, 26) having respective profiles that define an aperture into which the electrical connection (18) between the two electronic units (4, 10) passes In another embodiment, the protective film is formed of a single part having at least one slit starting from an aperture (32) made in said part and provided to allow the electrical connection to pass therethrough In another embodiment, the protective film has flaps at the edge of the aperture and is assembled to the solid bottom layer prior to addition of the electronic device or assembly

Classes IPC  ?

  • H05K 3/00 - Appareils ou procédés pour la fabrication de circuits imprimés
  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support
  • H05K 3/28 - Application de revêtements de protection non métalliques
  • H05K 3/36 - Assemblage de circuits imprimés avec d'autres circuits imprimés

48.

PORTABLE ELECTRONIC DEVICE, PARTICULARLY AN ELECTRONIC CARD, PROVIDED WITH AN OPTICAL SWITCH

      
Numéro de document 02775985
Statut Délivré - en vigueur
Date de dépôt 2009-12-10
Date de disponibilité au public 2011-04-07
Date d'octroi 2016-05-31
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Guillaud, Philippe
  • Lalo, Cyril

Abrégé

The portable electronic device, in particular an electronic card, includes at least one electronic unit (4) which is associated to an optical switch (12) which can be actuated by a user and which is formed by two photo-detectors (6, 8) arranged sufficiently far from each other in the electronic device to enable said user to cover only one of said two photo-detectors with one finger. The switch comprises a logical circuit (14) to which are provided a first and a second light reception signal (51, 52) respectively coming from the two photo-detectors. The logical circuit is arranged to supply a signal (S3) which only indicated actuation of said optical switch when said first and second light reception signals correspond to two different logical states for said logic circuit.

Classes IPC  ?

  • G06K 19/073 - Dispositions particulières pour les circuits, p.ex. pour protéger le code d'identification dans la mémoire

49.

SECURE MEMORY MANAGEMENT SYSTEM AND METHOD

      
Numéro de document 02728445
Statut Délivré - en vigueur
Date de dépôt 2009-06-23
Date de disponibilité au public 2009-12-30
Date d'octroi 2017-01-24
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Gremaud, Fabien
  • Gogniat, Christophe
  • Bellocchio, Marc
  • Fuchs, Pascal

Abrégé

The present invention describes a system and a method for securely loading digital information from a storage device into a memory module in a data processing system, said data processing system comprising at least one storage device, one memory module and at least one processor, said data processing system further comprising a memory access controller module connected between the processor and the memory module, and a secure memory management module connected to the processor, the memory module, the storage device and the memory access controller. Requests by the processor for data are passed to the secure memory management module, which loads the data from the storage device to the memory module and configures the memory access controller such that the processor will have access to the data.

Classes IPC  ?

  • G06F 21/57 - Certification ou préservation de plates-formes informatiques fiables, p.ex. démarrages ou arrêts sécurisés, suivis de version, contrôles de logiciel système, mises à jour sécurisées ou évaluation de vulnérabilité
  • G06F 21/79 - Protection de composants spécifiques internes ou périphériques, où la protection d'un composant mène à la protection de tout le calculateur pour assurer la sécurité du stockage de données dans les supports de stockage à semi-conducteurs, p.ex. les mémoires adressables directement

50.

METHOD FOR CONTROLLING THE USE OF A CONDITIONAL ACCESS CONTENT AND MULTIMEDIA UNIT FOR IMPLEMENTING SAID METHOD

      
Numéro de document 02728189
Statut Délivré - en vigueur
Date de dépôt 2009-06-19
Date de disponibilité au public 2009-12-23
Date d'octroi 2017-03-28
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Dagaeff, Thierry
  • Desarzens, Philippe

Abrégé

The present invention concerns a method for controlling the use of a conditional access content (C 0), said content being sent to a plurality of multimedia units (STB) connected to a management center (CG). The method comprises the steps of defining controlled content usage types; defining a set of usage rules (UR) for at least two controlled content usage types by set-ting condition values for these controlled content usage types;defining at least two content profiles (CP) by associating one usage rule of said at least two controlled content usage types; sending management messages containing the content profiles (CP) to at least a set of multimedia units (STB) linked to said management center;storing the content profiles (CP) in the concerned multime-dia units;sending the conditional access content (C 0), and joined sending of a control message (ECM) containing at least a means for determining the content profile (CP) that is to be linked to the content (C 0);further to the reception by a multimedia unit of the encrypted content (C 0) and of the corresponding control message (ECM), extracting the means for determining the content profile that is to be linked to the content; searching in the multimedia unit, the content profile corresponding to the means for determining the content profile that is to be linked to the content; and of using the content (C 0) by the multimedia unit ac-cording to the usage rules contained in the content profile that is to be linked to the content. The invention further concerns a mul-timedia unit for implementing said method.

Classes IPC  ?

  • H04N 7/16 - Systèmes à secret analogiques; Systèmes à abonnement analogiques

51.

METHOD FOR THE ALLOCATION AND MANAGEMENT OF SUBSCRIPTIONS FOR THE RECEPTION OF BROADCAST PRODUCTS

      
Numéro de document 02724795
Statut Délivré - en vigueur
Date de dépôt 2009-05-19
Date de disponibilité au public 2009-11-26
Date d'octroi 2017-06-13
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Moreillon, Guy

Abrégé

A device to reduce bandwidth necessary for renewal of subscriptions for reception of broadcast services including: defining a plurality of sets of subscriber identification numbers, each set being associated with a product; splitting a set of subscriber identification numbers into groups of subscribers; searching for an available subscriber identification number related to the desired product at the time of initialization of a new subscriber; confirming that an inhibit duration has elapsed between the end of the previous subscription and the start of the new subscription; sending an initialization message to the new subscriber addressed with his unique identification address and containing the subscriber identification number of, and rights to, his product; preparing a group rights renewal message for the product to the group containing the subscriber identification number, this message comprising the group header containing this subscriber and a compressed bitmap for individually addressing each of the group members.

Classes IPC  ?

  • H04N 7/16 - Systèmes à secret analogiques; Systèmes à abonnement analogiques

52.

SECURITY MODULE FOR AUDIO/VIDEO DATA PROCESSING UNIT

      
Numéro de document 02719563
Statut Délivré - en vigueur
Date de dépôt 2009-04-02
Date de disponibilité au public 2009-10-08
Date d'octroi 2016-07-12
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Conus, Joel
  • Gradassi, Luca
  • Ksontini, Rached
  • Kudelski, Henri

Abrégé

The aim of the present invention is to limit the impact of security breaches, which are the emulators of the security module.This aim is reached by a processing unit of audio/video digital conditional access data, encrypted by control words, responsible for processing security messages containing at least one cryptogram relative to a control word and one instruction relative to the control word, characterised in that it includes means to receive at least two micro programs by security messages, executable by the security module, said security module comprising means to store at least two micro programs and means to receive aninstruction contained in the security message, for selecting the micro program indicated by the instruction, for executing the said micro program with at least the cryptogram as a parameter of execution, this execution allowing the calculation of the control word to be sent back to the audio/video processing unit.

Classes IPC  ?

  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]

53.

METHOD FOR SENDING AN EXECUTABLE CODE TO A RECEIVING DEVICE AND METHOD FOR EXECUTING THIS CODE

      
Numéro de document 02692807
Statut Délivré - en vigueur
Date de dépôt 2008-07-09
Date de disponibilité au public 2009-01-15
Date d'octroi 2015-11-03
Propriétaire NAGRAVISION SA (Suisse)
Inventeur(s)
  • Conus, Joel
  • Gradassi, Luca

Abrégé

This invention relates to a process for sending an executable code to a security module locally connected to a receiving device, this security module including a microcontroller and a memory, said memory including at least one executable area provided to contain instructions suitable to be executed by said microcontroller, and at least one non-executable area, wherein the microcontroller cannot execute the instructions, characterized by including the steps of dividing the executable code into blocks; adding at least one block management code to said blocks in order to create an extended block; introducing the content of an extended block into a message to be processed in the receiving device, in such a way that the whole executable code is contained in a plurality of messages; sending a message to the receiving device, this message containing one of the extended blocks different from the first extended block; processing said message in order to extract its extended block; storing the executable code and said at least one management code of the block received in the executable area of the memory; executing at least one management code of said extended block, this management code having the effect of transferring the content of the block to a non-executable area of the memory; repeating the previous steps until all the extended blocks are stored in the memory, except for the first block; sending a message containing the first extended block to the receiving device; processing said message in order to extract the extended block and storing the executable code of the block received in the executable area of the memory. The invention also concerns a process for the execution of this code.

Classes IPC  ?

  • H04N 21/25 - Opérations de gestion réalisées par le serveur pour faciliter la distribution de contenu ou administrer des données liées aux utilisateurs finaux ou aux dispositifs clients, p.ex. authentification des utilisateurs finaux ou des dispositifs clients ou
  • H04N 21/443 - Procédés de système d'exploitation, p.ex. démarrage d'un boîtier décodeur STB, implémentation d'une machine virtuelle Java dans un boîtier décodeur STB ou gestion d'énergie dans un boîtier décodeur STB
  • H04N 21/458 - Ordonnancement de contenu pour créer un flux personnalisé, p.ex. en combinant une publicité stockée localement avec un flux d'entrée; Opérations de mise à jour, p.ex. pour modules de système d'exploitation

54.

METHOD OF MANUFACTURING CARDS THAT INCLUDE AT LEAST ONE ELECTRONIC UNIT

      
Numéro de document 02691577
Statut Délivré - en vigueur
Date de dépôt 2008-06-11
Date de disponibilité au public 2008-12-31
Date d'octroi 2014-11-18
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The invention relates to a method for manufacturing boards that comprises depositing a liquid resin (22) on and/or under a plurality of electronic units for forming a plate defining a plurality of boards or board bodies. In order to do so, and in order to reduce as much as possible the residual air bubbles in the manufactured plate, the method comprises depositing the resin in the form of resin beads (26) initially having between them grooves (28) defining air discharge channels. The resin in uniformly spread using a pressing roller for one end of the plate to a second opposite end of said plate.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

55.

CARD WITH DIGITAL DISPLAY

      
Numéro de document 02684579
Statut Délivré - en vigueur
Date de dépôt 2008-03-04
Date de disponibilité au public 2008-09-25
Date d'octroi 2014-07-08
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The invention relates to a card (38) including a digital display (10) arranged in a node (4) defining the central portion of the card. It further comprises a plastic layer (40) the major portion (42) of which is opaque, and a transparent display portion (44). A pattern (14) is printed on the upper face of the plastic layer (40), in particular by an offset printing technique. The plastic layer (40) is covered with a transparent film (12) attached thereto by a thin glue layer (34) defining an adhesion interface. The electronic display (10) is fully integrated in the card (38) and the printed pattern (14) exhibits a good contrast on the opaque portion of said plastic layer. Furthermore, a good adhesion is obtained between all the layers of the card.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

56.

METHOD TO CONTROL THE ACCESS TO CONDITIONAL ACCESS AUDIO/VIDEO CONTENT

      
Numéro de document 02680092
Statut Délivré - en vigueur
Date de dépôt 2008-03-03
Date de disponibilité au public 2008-09-12
Date d'octroi 2015-12-15
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Lebuhan, Corinne
  • Ippach, Holger
  • Fullton, Laura
  • Verbesselt, Ivan

Abrégé

The present invention aims at solving the financial revenue loss due to the presence of digital video recorder that allow shipping the commercial breaks. The solution is based on a method to control the access to conditional access audio/video content comprising at least one advertisement section, said content being played on a digital video recorder associated with a security module (SM) and being formed by at least an advertisement section and a main content section, this method comprising the steps of : -defining a control information associated with the audio/video content, said control information being stored in the security module, -updating the control information in the security module with condition information included in an Control Message relating to the advertisement section of the audio/video content, -receiving by the security module of an Control Message relating to the main content section of said audio/video content and containing a condition information in relation with the stored control information, -verifying that the condition information contained in the Control Message relating to the main content section match with the stored control information, and in the positive event, returning to the digital video recorder an authorization signal allowing the access the main content section of the audio/video content.

Classes IPC  ?

  • H04N 21/458 - Ordonnancement de contenu pour créer un flux personnalisé, p.ex. en combinant une publicité stockée localement avec un flux d'entrée; Opérations de mise à jour, p.ex. pour modules de système d'exploitation
  • H04N 21/4147 - Enregistreur vidéo personnel [PVR]

57.

PROCESS FOR CARRYING OUT A TRANSACTION BETWEEN A PAYMENT MODULE AND A SECURITY MODULE

      
Numéro de document 02679055
Statut Délivré - en vigueur
Date de dépôt 2008-02-26
Date de disponibilité au public 2008-09-04
Date d'octroi 2016-01-05
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Kudelski, Henri

Abrégé

This invention relates to a process for carrying out a transaction between a payment module and a security module connected to a user's unit, this process being characterized in that it comprises the following steps: entering an identifier representative of the transaction to be carried out by means of an input device; generating by the user's unit, a control message containing at least a representative code of said transaction and an identifier of the security module requiring the transaction; sending said control message to said payment module (PP); verifying in said payment module whether it is entitled to carry out the desired transaction; if the payment module is entitled to carry out this transaction, execution of the transaction, storage of the result of the transaction in said payment module and generation by the payment module, of a receipt relating to the desired transaction and to the related security module; sending said receipt to a management centre; sending an unlocking code to the security module (SC) by the management centre; registering the transaction in said security module.

Classes IPC  ?

  • G06Q 20/40 - Autorisation, p.ex. identification du payeur ou du bénéficiaire, vérification des références du client ou du magasin; Examen et approbation des payeurs, p.ex. contrôle des lignes de crédit ou des listes négatives
  • H04N 21/441 - Acquisition de l'identification d'un utilisateur final
  • G06Q 20/34 - Architectures, schémas ou protocoles de paiement caractérisés par l'emploi de dispositifs spécifiques utilisant des cartes, p.ex. cartes à puces ou cartes magnétiques

58.

METHOD OF FABRICATING ELECTRONIC CARDS INCLUDING AT LEAST ONE PRINTED PATTERN

      
Numéro de document 02678157
Statut Délivré - en vigueur
Date de dépôt 2008-02-06
Date de disponibilité au public 2008-08-28
Date d'octroi 2014-04-01
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The invention relates to a method for fabricating electronic cards, that comprises the following steps : A) forming a plurality of card bodies in the form of a thick sheet (36) in which is respectively imbedded a plurality of electronic units or modules (28); B) printing a plurality of first patterns (14) on a first face (21) of said thick sheet in a printing station in which ink is applied on the first face for making said first patterns; C) applying a first at least partially transparent coating (38) on each printed first pattern, that adheres to said card body. In an advanced embodiment, the method also comprises printing a plurality of second patterns (40) on the inner surface of a film (38) forming said first coating. Preferably, the printing of the first patterns is carried out in an offset type station for printing high definition patterns, essentially of the security type. The second patterns define personal data. The printed thick sheet (36) defines an intermediate product according to the invention.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

59.

METHOD OF REVOCATION OF SECURITY MODULES USED TO SECURE BROADCAST MESSAGES

      
Numéro de document 02660593
Statut Délivré - en vigueur
Date de dépôt 2007-08-15
Date de disponibilité au public 2008-02-21
Date d'octroi 2014-12-02
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Junod, Pascal

Abrégé

The aim of the present invention is to propose a method for preventing the abusive use of conditional access data, in particular by means of clones of security modules whose security has been compromised. This aim is achieved by a method of revocation of security modules that are intended to receive security messages broadcast to a plurality of security modules, the said security modules comprising at least one personal key, this method comprising the steps, prior to revocation: dividing the set of security modules into at least two groups, determining, for each group, an asymmetric key comprising a public key and a plurality of private keys, loading a private key per security module, transmitting a security message per group, the said message being encrypted by the public key of the said group; revocation consisting in the following steps: dispatching to each member of the same group as the security module to be revoked, with the exception of the security module or modules to be revoked, a new private key corresponding to the public key of another group, each private key being encrypted by the personal key of the said security module.

Classes IPC  ?

  • H04L 9/16 - Dispositions pour les communications secrètes ou protégées utilisant plusieurs clés ou algorithmes qui sont changés pendant l'opération
  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo

60.

METHOD OF MANUFACTURING CARDS COMPRISING AT LEAST ONE ELECTRONIC MODULE, ASSEMBLY PRODUCED DURING THIS METHOD AND INTERMEDIATE PRODUCTS

      
Numéro de document 02656978
Statut Délivré - en vigueur
Date de dépôt 2007-06-05
Date de disponibilité au public 2007-12-27
Date d'octroi 2014-11-04
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The assembly (22) involved in the fabrication of electronic cards comprises a plate (14) exhibiting a plurality of apertures (16) in which are respectively housed a plurality of electronic modules (2). These electronic modules are assembled to the plate 14 by fixing means, in particular by fixing bridges leaving a slot (26) over the major part of the surround of the electronic module. For example the fixing means are formed by projecting parts (18) at the periphery of the apertures (16), these projecting parts exhibiting a smaller thickness than the thickness of the plate (14) and serving as supports for the electronic modules, in particular for a substrate (12) of these modules. Fixing is performed for example by welding or adhesive bonding. The invention also relates to an intermediate product formed by such an assembly and a filling material that fills at least the major part of the remaining space in the apertures (16). The invention also relates to a method of fabricating cards in which the assembly according to the invention is finally coated in a resin to form substantially plane cards.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

61.

METHOD OF MANUFACTURING CARDS THAT EACH INCLUDE AN ELECTRONIC MODULE AND INTERMEDIATE PRODUCTS

      
Numéro de document 02654878
Statut Délivré - en vigueur
Date de dépôt 2007-06-05
Date de disponibilité au public 2007-12-27
Date d'octroi 2014-09-02
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

Method of manufacturing at least one card each including an electronic module (2), this method providing a frame (14) or a plate (18) having at least one aperture (16) provided for receiving said electronic module. It is characterized in that at least one part of the peripheral area of said at least one aperture is deformed or crushed by localised application of pressure to said at least one part of the peripheral area on the frame or plate, so as to reduce locally the thickness of the frame or plate in said at least one part of the peripheral area, in that the electronic module is brought opposite the corresponding aperture so that at least one zone of the electronic module is superposed on said at least one part of the peripheral area, and in that a material connection is established between said at least one part of the peripheral area and said at least one corresponding zone of the electronic module for assembling said electronic module to the frame or plate before a resin is added at least on one side of the electronic module in a subsequent step of the method.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

62.

METHOD TO OPTIMIZE THE DATA STREAM BETWEEN A ROUTER AND A MULTIMEDIA UNIT

      
Numéro de document 02642103
Statut Délivré - en vigueur
Date de dépôt 2007-02-22
Date de disponibilité au public 2007-08-30
Date d'octroi 2014-11-18
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Ippach, Holger
  • Le Buhan, Corinne
  • Uldry, Marc

Abrégé

Even if high speed are available between the router and the multimedia unit through the IP line (up to 24Mbits/sec), this is still the bottleneck in term of data transfer. Indeed in practice the vast majority of IP users have access speed between 2 to 5Mbits/sec and the development of other services (telephony, videoconference, push VOD, game) are bandwidth consuming. It is now an object of the invention to propose a solution to reduce the data flow between the router and the multimedia unit over IP line. This is achieved by a method to optimize the data stream between a router and a multimedia unit, the router receiving at least one data stream forming a service and comprising several sub-streams from which part of them are alternatively used by the multimedia unit, the method comprising the steps of : - defining a set of data representing the multimedia unit's profile, - transmitting this set of data to the router, - filtering by the router the unnecessary sub-stream according the given profile, - sending the remaining sub-streams to the multimedia unit.

Classes IPC  ?

  • H04L 12/701 - Routage ou recherche du chemin de transmission
  • H04H 60/82 - Dispositions caractérisées par des systèmes de transmission autres que ceux utilisés pour la radiodiffusion, p.ex. Internet caractérisées par le système de transmission lui-même le système de transmission étant Internet

63.

SECURE SYSTEM-ON-CHIP

      
Numéro de document 02633371
Statut Délivré - en vigueur
Date de dépôt 2006-12-21
Date de disponibilité au public 2007-06-28
Date d'octroi 2017-03-14
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Kudelski, Andre

Abrégé

The aim of the present invention is to provide a secure system-on-chip for processing data, this system-on-chip comprising at least a central processing unit, an input and an output channel, an encryption/decryption engine and a memory, characterized in that, said input channel comprises an input encryption module to encrypt all incoming data, said output channel comprising an output decryption module to decrypt all outgoing data, said central processing unit receiving the encrypted data from the input encryption module and storing them in the memory, and while processing the stored data, said central processing unit reading the stored data from the memory, requesting decryption of same in the encryption/decryption engine, processing the data and request-ing encryption of the result by the encryption/decryption engine and storing the encrypted result, outputting the result to the output decryption module for decryption purpose and exiting the decrypted result via the output channel.

Classes IPC  ?

  • H04L 12/22 - Dispositions pour interdire la prise de données sans autorisation dans un canal de transmission de données
  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole

64.

UPGRADABLE SECURITY MODULE

      
Numéro de document 02632054
Statut Délivré - en vigueur
Date de dépôt 2006-11-30
Date de disponibilité au public 2007-06-07
Date d'octroi 2016-01-12
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Hill, Michael John

Abrégé

The aim of the present invention is to provide a security module capable of supporting the different functions of the latest and the previous generations, by avoiding any possible attack due to this adaptability. This aim is attained by a security module comprising first communication means to a host device, first storage means (MEM0) and first decryption means (ENC0), characterized in that it includes a state module (SM) and second communication means (COM1) and physical activation or deactivation means (TSB) of said second means, such activation or deactivation being managed by the state module (SM).

Classes IPC  ?

  • G06F 21/77 - Protection de composants spécifiques internes ou périphériques, où la protection d'un composant mène à la protection de tout le calculateur pour assurer la sécurité du calcul ou du traitement de l’information dans les cartes à puce intelligentes
  • H04N 21/414 - Plate-formes spécialisées de client, p.ex. récepteur au sein d'une voiture ou intégré dans un appareil mobile
  • H04N 5/44 - Circuits de réception
  • H04L 12/22 - Dispositions pour interdire la prise de données sans autorisation dans un canal de transmission de données

65.

METHOD FOR VERIFYING A TARGET DEVICE CONNECTED TO A MASTER DEVICE

      
Numéro de document 02622505
Statut Délivré - en vigueur
Date de dépôt 2006-09-13
Date de disponibilité au public 2007-03-22
Date d'octroi 2014-03-18
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Le Buhan, Corinne
  • Zhao, Yishan

Abrégé

The aim of this invention is to propose different distribution and management methods of the revocation lists associated to anti-copying protection standards, in order to facilitate processing in a television broadcast environment by guaranteeing security against the piracy of the receiver equipment and of the equipment connected to this television broadcast receiver at the core of a home network. This aim is achieved by a verification method of a target device connected to a master device, the latter having means to receive a content transmitted by a diffusion centre via a data stream, the master device and the target device authenticating themselves by the exchange of a certificate comprising at least one certificate identifier, this method comprising the following steps: a. transmission by broadcast of at least one target device verification table containing a certificate identifier list, b. storage of this list in the master device, c. extraction of a verification indication associated to the content, this indication comprising the activation or the deactivation of the verification of the target device, d. if the verification indication includes the activation of the verification, verification of the certificate of the target device by the master device, use of at least one list stored to authorize or prohibit the exchanges of data with said target device.

Classes IPC  ?

  • H04N 21/254 - Gestion au sein du serveur de données additionnelles, p.ex. serveur d'achat ou serveur de gestion de droits
  • H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système

66.

METHOD FOR PROCESSING CONDITIONAL ACCESS CONTENTS BY A USER UNIT

      
Numéro de document 02617900
Statut Délivré - en vigueur
Date de dépôt 2006-08-08
Date de disponibilité au public 2007-02-15
Date d'octroi 2014-02-04
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Thomas, Frederic
  • Robyr, Sebastien
  • Kudelski, Henri
  • Moreillon, Guy
  • Desarzens, Philippe

Abrégé

The invention relates to a method for permitting that a (live) broadcast content accessible during the broadcast can also be accessed in batch mode thanks to intermediate storage on the hard drive of the user unit. To this end, a method for processing conditional access content (DT) by a user unit (STB) is provided, this unit receiving a data flow (DT) encrypted by at least one control word (CW), at least one flow of control messages (ECM, PECM) containing control words (CW), characterized in that this method comprises the following steps: forming an index file (ID TB), each index comprising an identifier of a control message formed by the extraction of data associated with control messages (ECM, PECM) and comprising an identifier of the portion of the contents to which this control message applies; during the batch processing of the contents (DT), extraction of at least a portion of the control messages, resynchronization of the content with the control messages by using the index file, the identifier of the control message making it possible to select the current control message among the set of control messages during the use of the contents identified by the identifier of the portion of the content relative to this control message.

Classes IPC  ?

  • G11B 27/32 - Indexation; Adressage; Minutage ou synchronisation; Mesure de l'avancement d'une bande en utilisant une information détectable sur le support d'enregistrement en utilisant des signaux d'information enregistrés par le même procédé que pour l'enregistrement principal sur des pistes auxiliaires séparées du même support d'enregistrement ou d'un support auxiliaire

67.

METHOD AND DEVICE FOR CONTROLLING ACCESS TO ENCRYPTED DATA

      
Numéro de document 02614107
Statut Délivré - en vigueur
Date de dépôt 2006-07-06
Date de disponibilité au public 2007-01-18
Date d'octroi 2013-11-19
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Kudelski, Henri
  • Cochard, Jimmy

Abrégé

The invention concerns a method and a device for controlling access to data encrypted by control words (CW), these control words being received in control messages (ECM) by a security module and returned to a processing unit (STB) for encrypted data. The method includes the following steps: - reception of a first control message (ECM1) comprising at least one control word (CW) and a time stamp (TS), - reception of a second control message (ECM2) consecutive to the first control message (ECM1), this second message comprising at least one control word (CW) and a time stamp (TS), - determination of a time duration corresponding to the difference between the time stamps (TS) of the two consecutive control messages (ECM1 , ECM2), - if this time duration is lower than a predefined time duration (CP), incrementation of an error counter (CE), - if this time duration is equal to or greater than said predefined time duration, decrementation of said error counter (CE), - returning of the control word (CW) to the processing unit (STB) after a waiting time that depends on the error counter (CE) value.

Classes IPC  ?

  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé

68.

METHOD FOR CONTROLLING ACCESS TO ENCRYPTED DATA

      
Numéro de document 02614109
Statut Délivré - en vigueur
Date de dépôt 2006-07-06
Date de disponibilité au public 2007-01-18
Date d'octroi 2013-11-19
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Stransky, Philippe

Abrégé

The present invention relates to a method for controlling access to data (CT) encrypted by control words (CW), these control words being received by a security module in control messages (ECM) and returned to a processing unit for encrypted data. These control messages (ECM) contain at least a first control word (CW1) and a second control word (CW2), these control words each allowing access to encrypted data (CT) during a determined time duration called a cryptoperiod (CP). This method includes the steps of: - sending said encrypted data to at least one processing unit; and - sending the control messages (ECM) to said processing unit, this type of control message (ECM) containing at least two determined control words (CW1, CW2) being sent to the processing unit after the sending of the data encrypted by said first control word (CW1) and before the sending of the data encrypted by said second control word (CW2); this method being characterised in that the time shifting between the sending to the processing unit of data encrypted by said first control word (CW1) and the sending of the control message (ECM) containing said first control word (CW1) and said second control word (CW2) is greater than 75% of the cryptoperiod.

Classes IPC  ?

  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé

69.

METHOD FOR APPLYING AN ELECTRONIC ASSEMBLY TO A SUBSTRATE AND A DEVICE FOR APPLYING SAID ASSEMBLY

      
Numéro de document 02595796
Statut Délivré - en vigueur
Date de dépôt 2006-02-01
Date de disponibilité au public 2006-08-10
Date d'octroi 2013-04-02
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The aim of this invention is to ensure maximum precision both at the level of the manufacturing of an electronic assembly from a chip with small dimensions as well as the level of the placement of such an assembly on an insulating substrate. This aim is achieved by a placement process on a support, called substrate (7), of at least one electronic assembly consisting of a chip (4) including at least one electric contact (5, 5') on one of its faces, said contact (5, 5') being connected to a segment (3,3') of conductive track, and said placement being carried out by means of a placement device (6) holding and positioning said assembly on the substrate (7), characterized in that it includes the following steps: - formation of a segment (3, 3') of conductive track having a predetermined outline, - transfer of the track segment (3, 3') onto the placement device (6), - seizing of the chip (4) with the placement device (6) carrying the track segment (3, 3') in such a way that said track segment (3, 3') is placed on at least one contact (5, 5') of the chip (4). - placement of the electronic assembly consisting of the chip (4) and the track segment (3, 3') at a predetermined position on the substrate (7), - embedding of the chip (4) and of the track segment (3, 3') into the substrate (7). The invention also refers to the placement device used in the process and to a portable object including an electronic assembly placed according to the process.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

70.

METHOD FOR TRANSMITTING DIGITAL DATA IN A LOCAL NETWORK

      
Numéro de document 02590000
Statut Délivré - en vigueur
Date de dépôt 2005-12-14
Date de disponibilité au public 2006-06-22
Date d'octroi 2013-11-19
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Moreillon, Guy

Abrégé

The aim of this invention is on one hand, to allow the reading of a content stored by a digital video recorder from a decoder of the local network regardless of the time elapsed between storage and reading, and on the other hand to prevent the transfer or improper copying of the content stored from one network to another. This aim is achieved by a method for transmitting digital data in a local network comprising members constituted by at least one first multimedia unit (DVR) having content (C) storage means (HD) and at least one second multimedia unit (STB1, STB2, STB3) intended to restore the content (C), said first multimedia unit being connected on one hand to a broadcasting server (SD) of encrypted digital audio/video data (D) and on the other hand to the second multimedia unit (STB1, STB2, STB3), each member possessing a security module (SM0, SM1, SM2, SM3) including a network key (Kr), said first multimedia unit (DVR) receives and decrypts the encrypted data forming a content (C) broadcasted by the broadcasting server (SD) and re-encrypts the content (C) previously decrypted, said method is characterized in that the content is re-encrypted with a random key (Ka) and transmitted to the second multimedia unit (STB1, STB2, STB3) accompanied by an authorization block Kr(Ka) comprising the random key (Ka) encrypted with the network key (Kr), said second multimedia unit (STB1, STB2, STB3) decrypts the authorization block Kr(Ka), and extracts the random key (Ka) to be used for decrypting the content (C).

Classes IPC  ?

71.

DIGITAL AUDIO/VIDEO DATA PROCESSING UNIT AND METHOD FOR CONTROLLING ACCESS TO SAID DATA

      
Numéro de document 02588460
Statut Délivré - en vigueur
Date de dépôt 2005-11-22
Date de disponibilité au public 2006-06-01
Date d'octroi 2013-07-30
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Puiatti, Jean-Michel
  • Gremaud, Fabien
  • Moreillon, Guy
  • Fischer, Nicolas
  • Nicoulin, Andre
  • Hill, Michael John

Abrégé

The present invention relates to a digital audio/video data processing unit and an access control method to this data. The processing unit (UT) of audio/video digital data encrypted with control-words (CW) coming from control messages (ECM) includes a deciphering unit (DMX) of the audio/video data (DT), a decompression unit (MPEG), an input/output interface of the processed audio/video data and communication means towards a security module (SM). The deciphering (DMX) and decompression (MPEG) units comprise respectively an encryption unit (EC) and a decryption unit (DC) each having at least one personal key (Kec, Kdc) and a common encryption key (Ki). It is characterized in that it comprises secured transmission means of the common key (Ki) and of the control word (CW) extracted from a control message (ECM) between the security module (SM), the deciphering unit (DMX) and the encryption unit (EC) using the personal key (Kec) of the encryption unit (EC). The deciphering by the deciphering unit (DMX) of the audio/video data (DT) with the control word (CW) and the re-encryption by the encryption unit (EC) of said deciphered data with the common key (Ki) being possible only after a successful verification of the control word (CW) and the common key (Ki). After temporary storage, the re-encrypted audio/video data (DT) cannot be decrypted by the decryption unit (DC) unless the common key (Ki) has been positively verified by the security module (SM) by means of a random number (AL) generated by the decryption unit (DC).

Classes IPC  ?

  • H04N 21/4405 - Traitement de flux élémentaires vidéo, p.ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène MPEG-4 impliquant le décryptage de flux vidéo
  • H04L 9/14 - Dispositions pour les communications secrètes ou protégées utilisant plusieurs clés ou algorithmes

72.

METHOD FOR UPDATING A TABLE OF CORRESPONDENCE BETWEEN A LOGICAL ADDRESS AND AN IDENTIFICATION NUMBER

      
Numéro de document 02582315
Statut Délivré - en vigueur
Date de dépôt 2005-09-28
Date de disponibilité au public 2006-04-06
Date d'octroi 2014-06-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Stransky, Philippe

Abrégé

The invention relates to a method for updating a table of correspondence between a logical address (AD), which is associated with a user unit in a communications network, and a unique identification number (UA), which is associated with a user unit of a group of user units managed by a management center (CG), during which messages are exchanged between this management center and at least one specific user unit (STB*) of said group via the communications network, these messages being routed to specific user unit (STB*) while using the logical address (AD*) of said user unit in this network. The invention is characterized by comprising the following steps: searching within the table of correspondence (TC) for the logical address (AD*) of the user unit in this communications network that corresponds to the unique identification number (UA*) of the specific user unit (STB*); sending messages to the user unit (STB*) having the relevant unique identification number (UA*), to the logical address (AD*) corresponding to this communications network; in the event of bad reception of messages, sending a request containing an identifier of said specific user unit (STB*), this request being sent to all or a portion of the user units (STB) belonging to said group; detecting a return message of a user unit (STB*) whose unique identification number (UA*) corresponds to the identifier contained in the request; determining the logical address (AD*) in the network used by the user unit (STB*) having transmitted the return message; verifying the logical address (AD) by establishing a communication between the management center and the user unit (STB*), and authenticating the specific user unit by management center; storing, in the table of correspondence (TC) of the management center, said logical address (AD*) of the user unit in the network associated with the unique identification number (UA*) of the user unit (STB*) having transmitted the return message.

Classes IPC  ?

  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole

73.

METHOD FOR MANAGING MEANS FOR ACCESSING CONDITIONAL ACCESS DATA

      
Numéro de document 02579341
Statut Délivré - en vigueur
Date de dépôt 2005-09-15
Date de disponibilité au public 2006-03-23
Date d'octroi 2015-02-17
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Duval, Gregory

Abrégé

The present invention relates to a method of managing access rights by a multimedia unit. With known systems, when the partial validity duration reaches the deadline, the management system must send a renewal message several times to ensure receipt, which is non-optimal use of bandwidth. The present method involves verifying if a multimedia unit (STB) is authorized to renew an access unit, by utilizing a control centre (CG). An access unit renewal message is sent to the multimedia unit, if the multimedia unit is authorized. An inhibition message is sent for preventing the multimedia unit from sending a new access unit renewal message, upon determining that the multimedia unit is not authorized to renew the access unit.

Classes IPC  ?

  • H04N 21/266 - Gestion de canal ou de contenu, p.ex. génération et gestion de clés et de messages de titres d'accès dans un système d'accès conditionnel, fusion d'un canal de monodiffusion de VOD dans un canal multidiffusion
  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé

74.

METHOD FOR SECURELY UPDATING A PROGRAM BLOCK LOADED IN A SECURITY MODULE

      
Numéro de document 02570385
Statut Délivré - en vigueur
Date de dépôt 2005-06-16
Date de disponibilité au public 2005-12-29
Date d'octroi 2014-04-01
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Osen, Karl

Abrégé

The aim of this invention is to propose a transmission method of a message containing a program block that allows to avoid the consequences of a possible malicious decryption of this message. This aim is achieved through a secure method to update software embedded in a security module, this method comprising the following steps: - formation of a first updating program block (PBI), - determination of a target memory zone of said security module, - determination through said security module, of a pre-registered content (MM_Ref) in said target memory zone , - formation of a second program block (SBI) obtained by the mixing of all or a part of the pre-registered content with the first program block (PBI), - transmission of the second program block (SBI) to the security module, - reception of the second block by the security module, - reading of the target memory zone (MEM), - obtaining and writing in the target memory zone of the first block by the inverse mixing of all or part of the second block and of the target memory zone content.

Classes IPC  ?

  • G06F 21/57 - Certification ou préservation de plates-formes informatiques fiables, p.ex. démarrages ou arrêts sécurisés, suivis de version, contrôles de logiciel système, mises à jour sécurisées ou évaluation de vulnérabilité
  • G06F 9/445 - Chargement ou démarrage de programme
  • G06F 1/00 - TRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES - Détails non couverts par les groupes et

75.

SECURITY MODULE COMPONENT

      
Numéro de document 02568831
Statut Délivré - en vigueur
Date de dépôt 2005-06-02
Date de disponibilité au public 2005-12-15
Date d'octroi 2012-04-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Kudelski, Andre

Abrégé

The aim of this invention is to improve in an optimal way the security of smart cards to prevent the fraudulent control of a cryptographic processor(s) by means of external signals that interfere with the normal development of the tasks of a processor(s). This aim is reached by a component IC of a security module comprising at least two processors CPU A, CPU B each connected to program memories ROM A, ROM B, to non-volatile programmable and erasable memories (EEPROM) EEPROM A, EEPROM B containing the data and random access memories (RAM) RAM A, RAM B that serve as temporary data storage during processing, the first processor CPU A having an interface bus with the exterior of the component IC, characterized in that the second processor CPU B is connected to the first processor CPU A through an exchange memory DPR, the non-volatile programmable and erasable memory EEPROM A of the first processor CPU A having read-only access R for said first processor CPU A, the second processor CPU B having read and write access R/W on said non-volatile programmable and erasable memory EEPROM A of the first processor CPU A.

Classes IPC  ?

  • G07F 7/10 - Mécanismes actionnés par des objets autres que des pièces de monnaie pour déclencher ou actionner des appareils de vente, de location, de distribution de pièces de monnaie ou de papier-monnaie, ou de remboursement par carte d'identité codée ou carte de crédit codée utilisée simultanément avec un signal codé

76.

METHOD FOR PROCESSING CONTENTS INTENDED FOR BROADCASTING

      
Numéro de document 02562582
Statut Délivré - en vigueur
Date de dépôt 2005-04-21
Date de disponibilité au public 2005-11-03
Date d'octroi 2013-10-22
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Collet, Jean-Francois
  • Brender, Olivier

Abrégé

The aim of the invention is to provide a flexible and easy solution for securing the contents transmitted by video servers to one or more users. To this end, the invention provides a method for processing contents intended for broadcasting, whereby this method comprises the following steps prior to broadcasting: encrypting the content using a number of control words (CW); reserving locations intended for receiving a control message (ECM) in the encrypted content; marking each location with an item of location information in the content; storing a file of keys containing the control words, and during broadcasting: transmitting the encrypted content to the video server; transmitting the file of the keys to a control message generator; broadcasting the encrypted content via the video server; intercepting the diffused stream by a replacement module; detecting, via the replacement module, locations of the control messages in the diffused content stream, and; applying control messages (ECM) to locations provided to this end by the replacement module.

Classes IPC  ?

  • H04N 21/234 - Traitement de flux vidéo élémentaires, p.ex. raccordement de flux vidéo ou manipulation de graphes de scènes MPEG-4

77.

METHOD FOR SECURING ENCRYPTED CONTENT BROADCAST BY A BROADCASTER

      
Numéro de document 02557502
Statut Délivré - en vigueur
Date de dépôt 2005-03-01
Date de disponibilité au public 2005-10-20
Date d'octroi 2013-04-30
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Groux, Cedric
  • Ksontini, Rached
  • Kudelski, Henri

Abrégé

The aim of this invention is to propose a method to prevent the abusive use of conditional access data, particularly by means of security module clones whose security has been compromised. This aim is reached by a method for protecting an encrypted content by at least one encryption key and transmitted by a broadcaster to at least one multimedia unit associated to a security module, a value allowing the determination of the encryption key(s) of these content also being transmitted to the multimedia unit by said broadcaster, said security module comprising means to determine the encryption key on the basis of said value, this method comprising the following steps: - generation of a temporary encryption key (MCW), - encryption by the temporary key (MCW) of the value allowing the determination of the encryption keys (cw) of the content; - transmission of this encrypted value to said multimedia unit, - encryption and transmission of at least two cryptograms comprising the temporary key (MCW) encrypted by an authorization key (G), the first cryptogram being encrypted by a first authorization key pertaining to a first security module and the second cryptogram being encrypted by a second authorization key, which pertains to a group of security modules whose first security module is excluded.

Classes IPC  ?

  • H04N 21/2347 - Traitement de flux vidéo élémentaires, p.ex. raccordement de flux vidéo ou manipulation de graphes de scènes MPEG-4 impliquant le cryptage de flux vidéo
  • H04N 21/266 - Gestion de canal ou de contenu, p.ex. génération et gestion de clés et de messages de titres d'accès dans un système d'accès conditionnel, fusion d'un canal de monodiffusion de VOD dans un canal multidiffusion

78.

METHOD FOR MANAGEMENT OF DATA PROCESSING WITH CONDITIONAL ACCESS BY MEANS OF AT LEAST TWO DECODERS

      
Numéro de document 02556617
Statut Délivré - en vigueur
Date de dépôt 2005-02-22
Date de disponibilité au public 2005-09-29
Date d'octroi 2014-10-21
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Kudelski, Henri
  • Le Buhan, Corinne
  • Moreillon, Guy

Abrégé

This invention relates to a management method for conditional access data processing by at least two decoders associated to a subscriber. These decoders include activation/deactivation means for conditional access data processing and local communication means structured to allow communication between the subscribers' decoders. This process comprises a reception step, by a first decoder's local communication means (10), of at least one message originating from at least a second decoder (STB) associated to said subscriber. Then, it comprises a step to determine the minimum number of different decoders of said subscriber from which said first decoder must receive messages, and a comparison step between on one hand the number of different decoders from which said first decoder has received a message and on the other hand the minimum number of decoders from which said first decoder must receive a message. Conditional access data processing by said first decoder (STB) is deactivated if the latter has not received messages from the required number of different decoders. The invention also concerns a decoder that allows the implementation of the method according to the invention and characterized in that it includes local communication means (10) structured to transmit messages to other decoders and to receive messages originating from said other decoders, and processing means for messages received by said local communication means (10).

Classes IPC  ?

  • H04N 21/436 - Interfaçage d'un réseau de distribution local, p.ex. communication avec un autre STB ou à l'intérieur de la maison
  • H04N 21/2543 - Facturation
  • H04N 21/462 - Gestion de contenu ou de données additionnelles, p.ex. création d'un guide de programmes électronique maître à partir de données reçues par Internet et d'une tête de réseau ou contrôle de la complexité d'un flux vidéo en dimensionnant la résolution o

79.

METHOD OF MANAGING THE RIGHTS OF SUBSCRIBERS TO A MULTI-OPERATOR PAY TELEVISION SYSTEM

      
Numéro de document 02555904
Statut Délivré - en vigueur
Date de dépôt 2005-02-04
Date de disponibilité au public 2005-09-22
Date d'octroi 2014-04-22
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Duval, Gregory

Abrégé

The invention relates to a method of managing the rights of subscribers to a pay television system comprising an access control system (CAS) having subscriber management systems (SMS1, SMS2, SMS3), which are each managed by an operator (OP1, OP2, OP3), and a plurality of subscriber decoders (STBn) connected thereto. Each of the aforementioned decoders (STBn) is equipped with a security module (SMn) containing the rights specific to each subscriber, thereby enabling same to decrypt encrypted digital data from a flow broadcast by at least one operator (OP1, OP2, OP3). Moreover, when rights are being modified by an operator in the security module (SMn) of a subscriber, the access control system (CAS): (i) receives data identifying a subscriber (IDSMn) together with commands for the modification of the rights C(Dm) of the subscriber from a subscriber management system (SMS1, SMS2, SMS3) of an operator (OP1, OP2, OP3), (ii) generates an entitlement management message (EMM1) containing the modified rights (Dm), and (iii) transmits said message (EMM1) to the security module (SMn) of the subscriber by means of the flow containing the encrypted data. The inventive method is characterised in that the modifications are verified as a function of the properties and available resources of the security module (SMn) and in that the entitlement management message (EMM1) containing the modified rights (Dm) is generated when the result of the verification is positive.

Classes IPC  ?

  • H04N 21/4627 - Gestion de droits
  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]

80.

METHOD FOR GENERATING PSEUDO-RANDOM SEQUENCE

      
Numéro de document 02525541
Statut Délivré - en vigueur
Date de dépôt 2004-09-02
Date de disponibilité au public 2005-03-17
Date d'octroi 2013-03-26
Propriétaire NAGRAVISION SA (Suisse)
Inventeur(s)
  • Vaudenay, Serge
  • Junod, Pascal

Abrégé

A method to generate sequences or sub-keys based on a main key, in which each sub-key gives no information to recover the main key or any other sub-keys. The method generates a sub-key based on a main key, comprising the following steps: obtaining a first value by applying to the main key a linear diversification layer by mixing the main key with a constant, applying to the first value a non-linear transformation, this transformation comprising: obtaining a second value by applying the first value to a substitution layer, the substitution layer comprising at least one substitution box (sbox), each substitution box containing at least one table of constants for which the first value serves as the pointer and a pointed constant serves as an output, obtaining a third value by using a diffusion box of multi-permutation type based on the second value, dividing the third value in N blocks of same size, obtaining an output fourth value formed by N blocks, each block of the fourth value being the result of the combination of at least two blocks of the third value, a block having a same index being always omitted, obtaining a seventh value by applying to the fourth value a substitution layer (sigma), obtaining the sub-key by applying to the seventh value of a symmetrical encryption module, the first value serving as a key input for this module.

Classes IPC  ?

  • H04L 9/06 - Dispositions pour les communications secrètes ou protégées l'appareil de chiffrement utilisant des registres à décalage ou des mémoires pour le codage par blocs, p.ex. système DES

81.

METHOD FOR SECURING AN ELECTRONIC CERTIFICATE

      
Numéro de document 02532521
Statut Délivré - en vigueur
Date de dépôt 2004-07-06
Date de disponibilité au public 2005-01-20
Date d'octroi 2013-11-26
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Stransky, Philippe

Abrégé

The aim of the present invention is to prevent the use of an electronic certificate by persons other than the holder and to prevent the holder from being harmed in the event of theft or duplication of a certificate. This aim is achieved by means of a method for securing and verifying an electronic certificate (C) issued by an issuing authority (AU) to a holder, wherein said certificate (C) is stored in a memory of a holder-operated user unit (PC) which transmits all part of the data of the certificate (C) to the authority (AU), characterised in that, in an initial setting stage, the authority (AU) determined a network ID (HID) specific to the user unit (PC), and the authority (AU) stores said ID (HID) together with the data of the certificate (C).

Classes IPC  ?

  • H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole

82.

DEVICE AND METHOD FOR ENCRYPTING AND DECRYPTING A BLOCK OF DATA

      
Numéro de document 02525591
Statut Délivré - en vigueur
Date de dépôt 2004-05-19
Date de disponibilité au public 2004-12-02
Date d'octroi 2012-10-09
Propriétaire NAGRAVISION SA (Suisse)
Inventeur(s)
  • Junod, Pascal
  • Vaudenay, Serge

Abrégé

Method to encrypt or decrypt blocks of data X to Y, based on a main key R, this method using several serially connected modules, each module using a sub- key RA derived from the main key R and comprising the steps of: - inputting at least two initial values XOL and XOR, and mixing these values to form a mixed value X1, - obtaining a value X2 by mixing a first part RAH of the sub-key RA with the value X1, - obtaining a value X3 by applying the value X2 to a substitution layer, comprising at least one substitution box (sbox), - obtaining a value X4 by using a diffusion box of multi-permutation type based on the value X3, - obtaining a value X5 by mixing a second part RAL of the sub- key RA with the value X4, - obtaining the value X6 by applying to the value X5 a substitution layer, - obtaining a value X7 by mixing a first part RAH of the sub-key RA with the value X6, - mixing the value X7 with the initial at least two values XOL and XOR to obtain the at least two values X8L and X81R, X8L and X8R representing the output value X8 of the module. This method using at least two modules, and applies to at least one of the value X8L or X8R an orthomorphism function before feeding them to the next module.

Classes IPC  ?

  • H04L 9/06 - Dispositions pour les communications secrètes ou protégées l'appareil de chiffrement utilisant des registres à décalage ou des mémoires pour le codage par blocs, p.ex. système DES

83.

METHOD FOR MOUNTING AN ELECTRONIC COMPONENT ON A SUBSTRATE

      
Numéro de document 02524673
Statut Délivré - en vigueur
Date de dépôt 2004-05-12
Date de disponibilité au public 2004-11-25
Date d'octroi 2012-01-24
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The aim of this invention is to propose a manufacturing process for a transponder in the form of a card or a label able to resist to flexions or twisting without interrupting the connections of the electronic components. This aim is reached by an assembly process of at least one electronic component (1) including sensibly flat conductive areas (3) that are connected to conductive tracks (6) placed on the surface of a generally flat insulating support called a substrate (5) characterized by the following steps: - placing the substrate (5) on a work surface, the face including conductive tracks (6) being oriented upwards, - placing the electronic component (1) into a cavity (7) of the substrate (5) situated in a zone including the conductive tracks (6), the conductive areas (3) of the component (1) coming into contact with the corresponding tracks (6) of the substrate (5), - applying a layer of insulating material (8) which extends at the same time on the component (1) and at least on a substrate zone surrounding said component (1), in such a way that the electric connection between the conductive areas (3) and conductive tracks (6) is ensured by the pressure of the insulating layer (8) on the component (1).

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support
  • B23K 1/00 - Brasage ou débrasage

84.

METHOD FOR DEACTIVATING AND REACTIVATING SECURITY MODULES

      
Numéro de document 02517756
Statut Délivré - en vigueur
Date de dépôt 2004-03-02
Date de disponibilité au public 2004-09-16
Date d'octroi 2012-07-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Kudelski, Henri
  • Brique, Olivier
  • Wirz, Christian
  • Hauert, Patrick

Abrégé

This invention concerns a security module deactivation and reactivation method particularly intended for access control of conditional access data. These security modules include a plurality of registers (R1, R2, R3, Rn) containing values. The method includes the step of sending at least one management message (RUN-EMM) containing an executable code, this executable code being loaded into a memory of the security module and then executed. The execution of this code in particular can carry out the combination and/or the enciphering of the values of the registers, or render these values illegible. This method also allows the reactivation of the security modules that have been deactivated previously. In this case, the method includes the step of sending another message containing an executable code (RUN-EMM -1) for the reactivation of the modules, this executable code having an inverted function to that of the executable code used for the deactivation of the security modules.

Classes IPC  ?

  • G07F 7/10 - Mécanismes actionnés par des objets autres que des pièces de monnaie pour déclencher ou actionner des appareils de vente, de location, de distribution de pièces de monnaie ou de papier-monnaie, ou de remboursement par carte d'identité codée ou carte de crédit codée utilisée simultanément avec un signal codé

85.

METHOD FOR STORING AND TRANSMITTING DATA GENERATED BY A SECURITY MODULE

      
Numéro de document 02514111
Statut Délivré - en vigueur
Date de dépôt 2004-02-05
Date de disponibilité au public 2004-08-19
Date d'octroi 2011-10-11
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Wirz, Christian
  • Brique, Olivier
  • Carrel, Xavier
  • Duval, Gregory
  • Hauert, Patrick

Abrégé

Le but de la présente invention est de pouvoir récupérer des informations spécifiques ô un module de sécurité alors que ce dernier a été remplacé par un nouveau module dans une unité d'utilisateur connectée ô un réseau de diffusion. Ce but est atteint par une méthode de stockage et de transmission d'informations générées par un premier module de sécurité connecté ô une unité d'utilisateur, ce premier module de sécurité comprenant un identifiant unique et des informations représentatives de son fonctionnement, ce premier module pouvant être remplacé par un second module de sécurité, cette méthode comprenant les étapes suivantes: - détermination des informations spécifiques contenues dans le premier module de sécurité destinées ô la transmission, - transfert de ces informations dans l'unité d'utilisateur, - stockage de ces informations dans l'unité d'utilisateur, - remplacement du premier module de sécurité par le deuxième module de sécurité, - connexion de l'unité d'utilisateur sur un réseau de transmission, - initialisation d'une communication entre le second module de sécurité et un centre de gestion, - insertion par l'unité d'utilisateur, d'un bloc de données dans les blocs transmis par le second module, ce bloc comprenant l'identifiant du premier module et les informations spécifiques audit premier module.

Classes IPC  ?

  • H04N 21/4367 - Interfaçage d'un réseau de distribution local, p.ex. communication avec un autre STB ou à l'intérieur de la maison Établissement d'une communication protégée entre le client et un dispositif périphérique ou une carte à puces
  • H04N 21/23 - Traitement de contenu ou de données additionnelles; Opérations élémentaires de serveur; Intergiciel de serveur

86.

METHOD OF SECURING SOFTWARE UPDATES

      
Numéro de document 02508424
Statut Délivré - en vigueur
Date de dépôt 2003-12-01
Date de disponibilité au public 2004-06-17
Date d'octroi 2014-09-30
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Sasselli, Marco
  • Pican, Nicolas

Abrégé

This invention proposes a method for securing updating software in a plurality of decoders based on the generation of a signature by means of a private asymmetrical key. The updating of a decoder is carried out by downloading, from a managing center, a data block including a patch and its signature, said block is stored in a RAM. The signature is decrypted with a current public key from a list contained in a first non-volatile memory of the decoder, then verified and in the case of correspondence, a command leads the installation of the patch in a second non-volatile Flash memory and the deactivation of the current key. The aim of this invention is to considerably reduce the impact of the discovery of a private key by mean of a systematic analysis of the working of the decoder software, or to notably increase the time and the means necessary for the process used to determine said private key.

Classes IPC  ?

  • H04N 21/458 - Ordonnancement de contenu pour créer un flux personnalisé, p.ex. en combinant une publicité stockée localement avec un flux d'entrée; Opérations de mise à jour, p.ex. pour modules de système d'exploitation
  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé
  • H04N 21/654 - Transmission du serveur vers le client
  • H04L 9/30 - Clé publique, c. à d. l'algorithme de chiffrement étant impossible à inverser par ordinateur et les clés de chiffrement des utilisateurs n'exigeant pas le secret
  • H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système

87.

METHOD OF MANAGING THE DISPLAY OF EVENT SPECIFICATIONS WITH CONDITIONAL ACCESS

      
Numéro de document 02508427
Statut Délivré - en vigueur
Date de dépôt 2003-12-01
Date de disponibilité au public 2004-06-17
Date d'octroi 2012-07-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Brique, Olivier
  • Gogniat, Christophe

Abrégé

The object of the invention is a method of managing the display of event specifications with conditional access, particularly to display an electronic program guide for Pay-TV. This aim is reached by a method including the following steps: - sending data forming an electronic program guide (EPG) to a decoder (STB), this electronic guide serving to display the events which will be broadcasted, these data including, for each event, at least one identifier, textual data and a condition block comprising the conditions required for the access to this event, - sending at least one authorization message (EMM) to a security module (SC) associated with the decoder, this message defining access rights to an event; - sending the condition block (PECM) to said security module (SC), - processing, in the security module, the access condition contained in said condition block (PECM), and - return by the security module of a message indicating, according to the access condition for each event and to the access rights contained in the security module, if the right exists or not for each event in the security module. This method allows the management of requests in structured language and makes it possible to manage complex access conditions.

Classes IPC  ?

  • H04N 21/6336 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client vers le décodeur
  • H04H 60/72 - Systèmes spécialement adaptés à l'utilisation d'informations spécifiques, p.ex. d'informations géographiques ou météorologiques utilisant des guides électroniques de programmes
  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]

88.

ELECTRONIC MODULE COMPRISING AN ELEMENT EXPOSED ON ONE SURFACE AND METHOD FOR MAKING SAME

      
Numéro de document 02501777
Statut Délivré - en vigueur
Date de dépôt 2003-10-10
Date de disponibilité au public 2004-04-22
Date d'octroi 2011-11-29
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

This invention concerns a manufacturing method for an electronic module and a module manufactured according to this method that includes an assembly with two insulating sheets (2, 9) and an electronic element (3). A first insulating sheet (2) constituting one of the faces of the module including at least one window (4) in which the electronic element (3) is housed, one face of said element (3) levelling the surface of said first sheet (2) and appearing on the exterior face of the module. The second insulating sheet (9) constitutes the other face of the module. The module is characterized in that it includes an adhesive film (5) which extends over a region covering at least the outline of the window (4) of the element (3) and is situated in a region situated between the first sheet (2) and the second sheet (9). The module can also include at least one electronic circuit (6) placed between the two insulating sheets (2, 9) and connected to the element (3) on the conductive connection areas (13) located on the interior face of the element (3). The aim of this invention consists in avoiding the appearance of undesirable residues on the exterior face of the module in the vicinity of the element (3). These residues that originate from the infiltration of a filling material (8) through the window (4) and/or the element (3) which is housed there.

Classes IPC  ?

  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support

89.

MULTIPLE MATCHING CONTROL METHOD

      
Numéro de document 02498556
Statut Délivré - en vigueur
Date de dépôt 2003-09-19
Date de disponibilité au public 2004-04-08
Date d'octroi 2014-07-08
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Ksontini, Rached
  • Sasselli, Marco

Abrégé

Le but de la présente invention est d'apparier un module de sécurité avec un ou plusieurs appareils hôtes dans un environnement dans lequel le module hôte ne dispose pas de liaison avec un centre de gestion. Ce but est atteint par une méthode de contrôle d'appariement entre un premier dispositif tel qu'un module de sécurité amovible et un second dispositif tel qu'un appareil hôte, cet appariement consistant ô sécuriser l'échange des données ô l'aide d'une clé d'appariement unique, cette méthode consistant ô: vérifier l'appariement entre les deux dispositifs et utiliser la clé d'appariement unique si l'appariement est déjô effectué, dans la négative, rechercher un emplacement vide parmi les emplacements réservés aux données d'appariement dans le premier dispositif et dans l'affirmative, initier une procédure d'appariement en transmettant un cryptogramme contenu dans le second dispositif, et contenant un identifiant propre ô ce dispositif, ce cryptogramme étant encrypté par une clé secrète commune ô tous les premiers dispositifs, décrypter par le premier dispositif ce cryptogramme et en extraire l'identifiant du second dispositif, générer une clé d'appariement basée sur cet identifiant, mémoriser dans le premier dispositif les données de l'appariement avec le second dispositif.

Classes IPC  ?

  • H04L 9/12 - Dispositifs de chiffrement d'émission et de réception synchronisés ou initialisés d'une manière particulière
  • H04N 21/2347 - Traitement de flux vidéo élémentaires, p.ex. raccordement de flux vidéo ou manipulation de graphes de scènes MPEG-4 impliquant le cryptage de flux vidéo
  • H04L 9/32 - Dispositions pour les communications secrètes ou protégées comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système

90.

METHOD FOR VERIFYING VALIDITY OF DOMESTIC DIGITAL NETWORK KEY

      
Numéro de document 02494999
Statut Délivré - en vigueur
Date de dépôt 2003-08-14
Date de disponibilité au public 2004-02-26
Date d'octroi 2012-04-03
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Le Buhan, Corinne
  • Ksontini, Rached

Abrégé

The aim of this invention is to propose a control method for the conformity of a network key (NK). This method is applied during the transfer of data coming from a conditional access source to a domestic network. It handles on the verification of the network key (NK) authenticity using relevant control data provided by the verification center in general in form of a list {(TK)NK1, (TK)NK2, (TK)NK3 ...}. A verification of the presence or absence of a cryptogram (TK)NK is carried out according to the list {(TK)NK1, (TK)NK2, (TK)NK3 ...}. The cryptogram (TK)NK is constituted from a test key (TK), provided by the verification center, encrypted by a network key (NK) of a security module (CT) of a device (TV1, TV2, PC) connected to the network.

Classes IPC  ?

  • H04N 7/10 - Adaptations à la transmission par câble électrique
  • H04N 5/913 - Traitement du signal de télévision pour l'enregistrement pour la transposition

91.

METHOD AND ELECTRONIC MODULE FOR SECURE DATA TRANSMISSION

      
Numéro de document 02491828
Statut Délivré - en vigueur
Date de dépôt 2003-07-21
Date de disponibilité au public 2004-01-29
Date d'octroi 2011-11-15
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Nicolas, Christophe

Abrégé

This invention is applied in the field of transmission point-to-point and proposes to protect the data so that the data decrypted by one of the users are not usable by another. This object is achieved by a process for point-to-point secured transmission of data between a managing centre and a unit linked to said managing centre, said data including a content encrypted by at least one control word, each user unit including at least one decoder/receiver provided with at least one encryption key specific to each user unit, characterized in that it includes the following steps : - transmitting a request from the user unit to the managing centre requesting the sending of a specific content, together with a unique identifier, - determining, from a database associated with the managing centre, the key corresponding to said user unit having transmitted the request, - encrypting these control words with said key corresponding to said user unit having transmitted the request, to obtain encrypted control words, and transmit them to the user unit having transmitted the request, - transmitting said encrypted content to the user unit having transmitted the request.

Classes IPC  ?

  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé

92.

METHOD FOR SECURE DATA EXCHANGE BETWEEN TWO DEVICES

      
Numéro de document 02488837
Statut Délivré - en vigueur
Date de dépôt 2003-06-10
Date de disponibilité au public 2003-12-24
Date d'octroi 2011-04-26
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Brique, Olivier
  • Nicolas, Christophe
  • Sasselli, Marco

Abrégé

This invention concerns a safe data exchange method between two devices locally connected to one another. In a preferred embodiment, the first device (10) is a security module containing a first encrypting key, said private key (PAKV) of a pair of asymmetric encrypting keys. The second device is a receiver (11) comprising at least one second encrypting key, said public key (PAKB) of said pair of asymmetric encrypting keys. Furthermore each of the devices comprises a symmetrical key (13). The first device (10) generates a first random number (A), which is encrypted by said private key (PAKV), then transmitted to the second device (11), in which it is decrypted by means of the public key (PAKB). The second device (11) generates a second random number (B), which is encrypted by said public key (PAKB), then transmitted to the first device (10), in which it is decrypted by means of the private key (PAKV). A session key (SK), used for safe data exchange, is generated by a combination of the symmetric key (13) and the random numbers (A, B) generated and received by each of the devices.

Classes IPC  ?

93.

SYSTEM AND METHOD FOR MANAGING RESOURCES OF PORTABLE MODULE RESOURCES

      
Numéro de document 02496545
Statut Délivré - en vigueur
Date de dépôt 2003-05-05
Date de disponibilité au public 2003-11-13
Date d'octroi 2013-09-24
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Cantini, Renato
  • Lagadec, Roger
  • Busch Lauper, Karin

Abrégé

Proposed are a method and a system for management of resources of portable resource modules (1, 1'), each connected to a communication terminal (2, 2', 2"), which modules comprise electronic memory units (11) and are designed in particular as chipcards. A first resource management instruction comprising a module identification is transmitted to a resource management centre (4). A second resource management instruction is transmitted from the resource management centre (4) via a communication network (3) to the resource module (1) identified through the module identification. In the particular resource module (1), resources are made ready or released by a resource control mechanism (111) corresponding to the received second resource management instruction. A resource management confirmation is transmitted by the particular resource module (1) via the communication network (3) to the resource management centre (4), and in the resource management centre (4) information about the resources made ready or released is stored assigned to the module identification.

Classes IPC  ?

  • G06F 9/50 - Allocation de ressources, p.ex. de l'unité centrale de traitement [UCT]

94.

PREPAID PAY TELEVISION SYSTEM

      
Numéro de document 02481750
Statut Délivré - en vigueur
Date de dépôt 2003-04-09
Date de disponibilité au public 2003-10-16
Date d'octroi 2012-01-03
Propriétaire NAGRAVISION SA (Suisse)
Inventeur(s) Sasselli, Marco

Abrégé

The aim of this invention is to propose an innovating way to offer access to paying TV to a large clientele all by drastically diminishing the costs connected to the management of the subscribers. This aim is reached by a system having a managing center (CAS) transmitting a data stream encrypted by control words (CW), these control words being included in control messages (ECM), this data stream intending to be received by at least one user unit (STB) linked to a security module (SC) identified by a unique address (UA), this security module (SC) containing a credit (CR) which is deducted according to the purchase of products or the consumption of data stream, characterized in that the security user comprises means to deduct the credit of an amount (M1) relating to a product or an amount (M2) relating to a duration (T), this amount (M1, M2) and/or this duration (T) being defined in the management message (ECM) or in a management message (EMM), the user having means to transmit to the managing center (CAS) a representative identifier of the unique address (UA) and a value code representing an amount (TA) of credit to reload (CR), the managing center having means to deal with and check the value code (VC) and to transmit, a encrypted message having the unique address (UA) and the amount (TA) to reload the credit (CR) to the security module (SC).

Classes IPC  ?

  • H04N 21/6334 - Signaux de commande issus du serveur dirigés vers des éléments du réseau ou du client vers le client pour l’autorisation, p.ex. en transmettant une clé
  • H04N 21/2347 - Traitement de flux vidéo élémentaires, p.ex. raccordement de flux vidéo ou manipulation de graphes de scènes MPEG-4 impliquant le cryptage de flux vidéo

95.

METHOD FOR CONTROLLING THE BILLING OF A BROADCAST SERVICE BY UNITS OF TIME

      
Numéro de document 02475084
Statut Délivré - en vigueur
Date de dépôt 2003-02-07
Date de disponibilité au public 2003-08-21
Date d'octroi 2011-11-08
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s)
  • Cochard, Jimmy
  • Kudelski, Henri
  • Sasselli, Marco

Abrégé

The objective of the present invention is to propose an accounting method of the consumption of transmitted services per time unit to a decoder in a system implementing a content encrypted by control words, the latter being modified according to a period named crypto-period. This method consists in verifying if the time-current (TC) is comprised in a time variable (Rdate) representative of the authorisation time of use of the service and, if this is the case, decrypting and returning the control words to the decoder, and if it is not the case, debiting an amount (CT) corresponding to a time of use (AT) and recharging the time variable (Rdate) with a corresponding time.

Classes IPC  ?

  • H04N 21/4623 - Traitement de messages de titres d'accès, p.ex. message de contrôle d'accès [ECM], message de gestion d'accès [EMM]

96.

ELECTRONIC CIRCUIT COMPRISING CONDUCTIVE BRIDGES AND METHOD FOR MAKING SUCH BRIDGES

      
Numéro de document 02462252
Statut Délivré - en vigueur
Date de dépôt 2002-10-01
Date de disponibilité au public 2003-04-10
Date d'octroi 2011-11-29
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The aim of this invention is to obtain a very cheap electronic circuit used for example in a card or a label while maintaining high reliability. It particularly concerns the connection of one or several electronic components on the conductive tracks by means of conductive bridges that traverse the substrate. The electronic circuit according to the invention includes at least one electronic component (6), a substrate (5), on a first face of this substrate an adhesive layer and a conductive layer including a plurality of tracks (4) are applied. The electronic component (6) comprises at least two connection areas (7). One of these connection areas (7) is electrically linked to the conductive layer by a conductive bridge formed by a conductive segment (1) delimited in the conductive layer only. Said segment (1), free from any adhesive substance, traverses the substrate (5) through a passage (2, 3) and links the connection area (7).

Classes IPC  ?

  • H05K 3/40 - Fabrication d'éléments imprimés destinés à réaliser des connexions électriques avec ou entre des circuits imprimés
  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support
  • H01L 21/48 - Fabrication ou traitement de parties, p.ex. de conteneurs, avant l'assemblage des dispositifs, en utilisant des procédés non couverts par l'un uniquement des groupes
  • H01L 23/498 - Connexions électriques sur des substrats isolants
  • H05K 3/46 - Fabrication de circuits multi-couches

97.

THIN ELECTRONIC LABEL AND METHOD FOR MAKING SAME

      
Numéro de document 02460840
Statut Délivré - en vigueur
Date de dépôt 2002-09-17
Date de disponibilité au public 2003-03-27
Date d'octroi 2011-12-20
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Droz, Francois

Abrégé

The aim of this invention is to provide a thin flexible card or electronic label, wherein are mounted electronic components to provide good electric connection between component contacts and card conductors. The aim of this invention is also to provide a manufacturing method for this type of card or electronic label. The card or electronic label, according to the invention, is produced by assembling at least one thin, flexible substrate (7), a conductive layer (4) and an adhesive layer (1), and comprising at least one electronic component (11). Said card is characterized in that the substrate (7) includes at least one window (8) wherein is housed the electronic component (11), the adhesive layer (1) maintains the conductive layer (8) on the substrate, the conductive layer (4) extends partially into the window's surface (8) so as to form at least one electric contact (4') whereon the electronic component (11) is connected. The substrate (7) has a thickness preferably selected on the basis of the greatest height of the component to be mounted.

Classes IPC  ?

  • H01L 23/498 - Connexions électriques sur des substrats isolants
  • G06K 19/077 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p.ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré - Détails de structure, p.ex. montage de circuits dans le support
  • H05K 1/18 - Circuits imprimés associés structurellement à des composants électriques non imprimés
  • H05K 3/38 - Amélioration de l'adhérence entre le substrat isolant et le métal
  • H05K 3/40 - Fabrication d'éléments imprimés destinés à réaliser des connexions électriques avec ou entre des circuits imprimés

98.

METHOD FOR DATA BROADCAST BETWEEN A LOCAL SERVER AND LOCAL PERIPHERALS

      
Numéro de document 02460211
Statut Délivré - en vigueur
Date de dépôt 2002-09-10
Date de disponibilité au public 2003-03-20
Date d'octroi 2010-11-23
Propriétaire NAGRAVISION SA (Suisse)
Inventeur(s) Robert, Arnaud

Abrégé

The objective of the present invention is to allow the domestic transmission of encrypted data with conditional access without limitation of the type of terminal used, at the same time guaranteeing that this transmission will not be able to go beyond this limit. This objective is achieved by a transmission method of encrypted data between a local server connected to one or several local peripherals, said local server comprising security means in charge of acquiring a first right of use of these data, characterised in that it consists in: - transmitting the encrypted data from the local server towards a peripheral, - extracting from the first right a second right corresponding to the part necessary for the decryption of the data in the peripherals, - encrypting by the security module the second right by means of a pairing key specific to the couple formed by the security module of the local server and the security module of the peripheral, - transmitting this encrypted second right to the local peripheral, - decrypting with the help of the pairing key the second right by the security means of the peripheral, - decrypting by the peripheral the data encrypted by the second right.

Classes IPC  ?

  • H04N 5/00 - TRANSMISSION D'IMAGES, p.ex. TÉLÉVISION - Détails des systèmes de télévision
  • H04N 7/24 - Systèmes pour la transmission de signaux de télévision utilisant la modulation par impulsions codées

99.

METHOD OF CREATING A VIRTUAL PRIVATE NETWORK USING A PUBLIC NETWORK

      
Numéro de document 02455857
Statut Délivré - en vigueur
Date de dépôt 2002-07-22
Date de disponibilité au public 2003-02-13
Date d'octroi 2012-01-10
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Collet, Daniel

Abrégé

The aim of this invention involves exchanging data between several computers or multimedia units through a public network guaranteeing at the same time the confidentiality of these data. This aim is achieved by a creation and use method of a virtual private network (VPN) which has a plurality of units connected to a public network, each unit having security means which has a unique number UA1, this method is characterized by the following steps: - to generate a right Dn associated to the unique number UAn, by the security means of a unit Un, - to transfer this right Dn to the security means of at least one unit Um, - to encrypt the data sent by unit Un and the description of the Dn right by a encryption data key KS, - to receive the data encrypted by the second unit Um, present these data to the security means of the unit Um, verify if the Dn right is present and if this is the case, decrypt the data by the encryption data key KS.

Classes IPC  ?

  • H04L 12/24 - Dispositions pour la maintenance ou la gestion
  • H04L 12/46 - Interconnexion de réseaux
  • H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole

100.

ENCRYPTION OF A COMPRESSED VIDEO STREAM

      
Numéro de document 02438599
Statut Délivré - en vigueur
Date de dépôt 2002-02-25
Date de disponibilité au public 2002-09-06
Date d'octroi 2011-09-20
Propriétaire NAGRAVISION S.A. (Suisse)
Inventeur(s) Chaubert, Eric

Abrégé

A method for encrypting a compressed video stream comprising independent data blocks and differential data blocks includes the steps of encrypting the independent data blocks with a different level of encryption than that used for the differential data blocks. In one embodiment, the differential data blocks are unencrypted. The method allows the reception of a compressed data stream using powerful algorithms on terminals having small cryptographic capacities.

Classes IPC  ?

  • H04N 21/2347 - Traitement de flux vidéo élémentaires, p.ex. raccordement de flux vidéo ou manipulation de graphes de scènes MPEG-4 impliquant le cryptage de flux vidéo
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