An input device includes transmitter electrodes disposed in a sensing region of the input device, a receiver electrode in the sensing region, and a processing system. The processing system includes demodulators and is configured to simultaneously drive at least a subset of the transmitter electrodes using a multitude of transmitter signals with unique frequencies. The processing system is also configured to receive, on the receiver electrode, a resulting signal, and demodulate, using the plurality of demodulators, the resulting signal to generate a multitude, of sensing signals. Each of the of the demodulators operates on a different frequency of the unique frequencies.
A capacitive fingerprint sensor is configured to be integrated in a display. The capacitive fingerprint sensor includes a plurality of transmitter electrodes. Each respective transmitter electrode including at least one transmitter conductor formed in a first metal layer of a sensor stack and disposed between pixels of a display. The capacitive fingerprint sensor further includes a plurality of receiver electrodes. Each respective receiver electrode including at least one receiver conductor formed in a second metal layer of a sensor stack and disposed between pixels of the display. The receiver electrodes have an orientation different from the transmitter electrodes.
A display driver includes image processing circuitry and drive circuitry. The image processing circuitry is configured to receive a foveal image, a full frame image, and coordinate data that specifies a position of the foveal image in the full frame image. The image processing circuitry is further configured to render a resulting image based on the full frame image independently of the foveal image in response to detection of a data error within the coordinate data. The drive circuitry is configured to drive a display panel based on the resulting image.
APPARATUS AND METHOD FOR FACILITATING COGNITIVE CLARITY VIA COLOR PALETTE TRANSITIONS IN A VIRTUAL SKY PROJECTED IN A DIGITAL SPACE WITH A GAZE POINT EXPERIENCING CYCLICAL SIZE CHANGES
A method includes projecting a dark virtual sky in a digital space. The dark virtual sky is transitioned to a dawn virtual sky in the digital space. The dawn virtual sky is altered to introduce a daytime virtual sky in the digital space. The daytime virtual sky is modified to produce a dusk virtual sky in the digital space. These operations are performed via color palette transitions in the virtual sky in the digital space in a time period of less than six minutes. The color palette transitions are in proportional time segments of a twenty-four hour day punctuated by periods of light and darkness of variable length corresponding to the revolution of the earth around the sun. A gaze point is formed in the digital space. The gaze point experiences size changes between a minimum size and a maximum size during a gaze point size change cycle. The gaze point size change cycle is repeated throughout the time period of less than six minutes.
A61M 21/02 - Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia
G02B 27/18 - Optical systems or apparatus not provided for by any of the groups , for optical projection, e.g. combination of mirror and condenser and objective
5.
APPARATUS AND METHOD TO MITIGATE TRAUMA VIA COLOR PALETTE TRANSITIONS IN A VIRTUAL SKY PROJECTED IN A DIGITAL SPACE WITH A COLLECTION OF GAZE POINTS EXPERIENCING CYCLICAL SIZE CHANGES
A method includes projecting a dark virtual sky in a digital space. The dark virtual sky is transitioned to a dawn virtual sky in the digital space. The dawn virtual sky is altered to introduce a daytime virtual sky in the digital space. The daytime virtual sky is modified to produce a dusk virtual sky in the digital space. These operations are performed via color palette transitions in the virtual sky in the digital space in a time period of less than six minutes. The color palette transitions are in proportional time segments of a twenty-four hour day punctuated by periods of light and darkness of variable length corresponding to the revolution of the earth around the sun. A collection of gaze points is formed in the digital space. Each gaze point in the collection experiences cyclic changes between a minimum position and a maximum position during a gaze point size change cycle. Initially, each gaze point in the collection experiences different changes between the minimum position and the maximum position during initial gaze point size change cycles thereby forming a gaze point out-of-phase period. Subsequently, selected gaze points in the collection experience common changes between the minimum position and the maximum position during intermediate gaze point size change cycles thereby forming a gaze point hybrid phase period. Finally, all gaze points in the collection share common changes between the minimum position and the maximum position during final gaze point size change cycles thereby forming a gaze point in-phase period that lasts at least one half the time period of less than six minutes.
A61M 21/02 - Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
6.
RESETTING CIRCADIAN RHYTHMS VIA COLOR PALETTE TRANSITIONS IN A VIRTUAL SKY
A method includes projecting a dark virtual sky in a digital space. The dark virtual sky is transitioned to a dawn virtual sky in the digital space. The dawn virtual sky is altered to introduce a daytime virtual sky in the digital space. The daytime virtual sky is modified to produce a dusk virtual sky in the digital space. All of the virtual sky transitions are performed in a time period of less than six minutes.
A method of detecting shift of a rotatable interface is disclosed. The rotatable interface has a fixed base with a conductive region on a bottom surface, the fixed base attached to a display screen of an input device. The method includes providing, during a first time period, a reference signal to first and second sets of electrodes of the input device that are each capacitively coupled to the conductive region. The method further includes, during a second time period, providing the reference signal to the first set of electrodes, providing a sensing signal to the second set of electrodes, and receiving, during the second time period, a resulting signal on the second set of electrodes. The method still further includes determining a translation of the rotatable interface relative to the display screen based, at least in part, on the resulting signal values received during the second time period.
G06F 3/0362 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts
G06F 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
A self-biased differential transmitter is provided. The transmitter may include a differential output driver powered by a supply voltage provided by a differential signal receiver. The output driver may include a bias voltage generator to generate bias voltages to enable one or more transistors in the output driver to operate with differential signals that are beyond the safe operating voltage range of transistors included within the differential transmitter.
A method includes projecting an object in a digital space. The object is transitioned to a final viewable peripheral location in the digital space. The object is removed from the digital space to define an unviewable path segment. The object is introduced to an initial viewable peripheral location in the digital space substantially opposite the final viewable peripheral location in the digital space. The initial viewable peripheral location to the final viewable peripheral location defines a viewable path segment. The object is returned to the center of the digital space. The operations are performed in an aggregate object path including the viewable path segment and the unviewable path segment. The object has a pre-configured object velocity and a pre-configured cycle time period in the aggregate object path.
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
G06F 3/00 - Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
An on-ear headphone includes an alignment structure extending into the user's concha to help the user to align the headset for optimal comfort and sound perception. The alignment minimizes sound leakage, optimizes audio playback, and improves active noise cancelation.
One or more embodiments are directed to compensating for a long horizontal blank (LHB) period. Using a first display data value, a compensation amount is determined from a mapping between display data and compensation amounts. The first display data value is for a display row after an LHB period in a display frame of a display panel. A second display data value is adjusted with the compensation amount to obtain revised display data value. The revised display data value is outputted for the display panel.
A method of driving pixels of a display device includes, for a set of N pixels of the display device that are connected to a switch, each of the N pixels to be driven during a time period T, applying, to a first pixel of the set, a first pre-charge signal, and applying, in sequence, to each remaining pixel of the set, a corresponding pre-charge signal, such that the start of the pre-charge signal for a Kth pixel is delayed by a time Δtk, from the start of the pre-charge signal for the (K-1)th pixel.
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
G09G 3/3225 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
A method comprises acquiring measured luminance levels at a measurement point of a display area for a plurality of test images displayed in the display area, and estimating one or more luminance levels at one or more corresponding luminance estimation points of the display area using the measured luminance levels. The method further comprises determining, based on the one or more estimated luminance levels, a correction parameter using the estimated one or more luminance levels.
An operational amplifier comprises a front stage and an output stage. The front stage comprises a first input transistor, a second input transistor, a first node, a second node, and a first current mirror. A first voltage based on a first current through the first input transistor is generated on the first node. A second voltage based on a second current through the second input transistor is generated on the second node. The output stage is configured to output an output voltage based on at least one of the first voltage and the second voltage. The first current mirror comprises a first transistor having a drain connected to the first node, a second transistor having a drain connected to the second node, and a first offset canceling capacitor connected between gates of the first transistor and the second transistor.
A method for displaying aerial images includes detecting a capacitive response of a non-contact gesture made by a user proximate to a touch sensing enabled display screen, and in response to detecting the non-contact gesture, displaying one or more images in a three-dimensional (3D) space proximate to the display screen.
G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
G06F 3/00 - Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
A rotatable device has a stationary base including bottom and top surfaces. The bottom surface has a first set of coupling electrodes configured to receive a reference signal from first electrodes of an attached input device, and second and third sets of coupling electrodes each configured to receive resulting signals from a second set of input device electrodes. The top surface of the stationary base has first, second and third top regions respectively connected to the first, second and third sets of coupling electrodes. The rotatable device further includes a rotary wheel, configured to rotate relative to the stationary base, with a bottom portion provided with alternating conductive and non-conductive regions and configured to align with the top portion of the stationary base. The resulting signals of the input device are modified by the relative positions of the stationary base and the rotary wheel.
H01H 19/02 - Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand - Details
17.
DEVICE AND METHOD FOR BRIGHTNESS CONTROL OF DISPLAY DEVICE
A display driver comprises signal supply circuitry and control circuitry. The control circuitry is configured to generate a first luminance value using a DBV. The signal supply circuitry is configured to supply to a display panel at least one signal using the first luminance value. The first luminance value has a one-to-one correlation with the display brightness level. The DBV does not have a one-to-one correlation with the display brightness level.
A method for eye tracking is disclosed. The method may include receiving a first image captured by a first camera based at least in part on reflections of light emitted by a light source. The reflections may be partially occluded by an electronic display disposed in front of the first camera. The method may further include detecting an eye of a user in the partially occluded first image and determining a position or orientation of the eye relative to the electronic display.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/00 - Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
A processing system including a processor, a first memory, a state machine configured to transition between a plurality of states, and an access filter. The first memory stores instructions that are executable by the processor, where execution of the instructions causes the processor to initiate transactions with one or more hardware resources. The access filter may filter the transactions initiated by the processor by selectively denying access to the hardware resources based at least in part on a current state of the state machine. The access filter may also filter transactions initiated by one or more of the hardware resources based at least in part on the current state of the state machine.
Systems and methods for protecting a loudspeaker from excessive excursion include an audio source, an adaptive excursion protection filter, an audio clipper, an inverse excursion protection filter, an amplifier and a loudspeaker. The system performs operations including receiving an audio signal, applying an excursion protection filter, the excursion protection filter adapting in real-time to one or more speaker conditions, clipping the audio signal, applying an inverse excursion protection filter, and amplifying, using an amplification circuit, the audio signal for output to the speaker.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
A system includes a logic device configured to cause the system to perform operations. The operations include requesting, from a peripheral device coupled to a host device, a device descriptor of the peripheral device, receiving, from the peripheral device, the device descriptor including at least two configurations. A first configuration includes an audio communications protocol having a plurality of selectable audio bit-rates and a second configuration including a plurality of selectable audio bit-rates and burst-rates. The operations further include selecting, from the first configuration and the second configuration based, at least in part, on a configuration of the host device, wherein the host device is configured to select the second configuration when the host device is compatible with the second configuration and select the first configuration when the host device is not compatible with the second configuration.
A method and apparatus for image processing. A de-warping circuit is configured to retrieve, in an ordered sequence, a plurality of de-warping matrices for remapping pixels of a first image from a distorted image space to a corrected image space, where the first image depicts a scene in the distorted image space. The de-warping circuit reads, into a memory buffer, blocks of pixels of the first image based at least in part on the order of the de-warping matrices and generates a plurality of image tiles based on the blocks of pixels of the first image. Each image tile is interpolated from one or more of the retrieved blocks using a respective one of the de-warping matrices. The de-warping circuit writes the plurality of image tiles to an external memory to produce a second image depicting the scene in the corrected image space.
A device comprises a first camera, wherein the first camera includes one or more photosensors configured to detect visible light passing, in a first direction, through a first surface. The device further includes a light source configured to emit infrared (IR) light, in a second direction opposite the first direction, through the first surface. The device also includes a second camera configured to detect reflections of the IR light.
A method and apparatus for fingertip tracking performed by a touchless input device. The input device captures a plurality of images of a scene and detects a user in the plurality of images using one or more first neural network models. The input device further detects a fingertip of the user in the plurality of images using one or more second neural network models and tracks a position of the fingertip across the plurality of images. The input device further processes a user input based at least in part on changes in the position of the fingertip across the plurality of images. In some implementations, the input device may process the user inputs by updating a graphical user interface (GUI) based on the user input.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/042 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
G06F 3/0481 - Interaction techniques based on graphical user interfaces [GUI] based on specific properties of the displayed interaction object or a metaphor-based environment, e.g. interaction with desktop elements like windows or icons, or assisted by a cursor's changing behaviour or appearance
G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06N 3/04 - Architecture, e.g. interconnection topology
A device includes a display and a first light source configured to emit light, wherein the first light source is proximate to the display. The device further includes a first camera disposed behind the display, wherein the first camera is configured to detect reflections of the light emitted by the first light source. The first camera is further configured to capture a first image based at least in part on the reflections, wherein the reflections are partially occluded by the display. The device also includes a second camera proximate to the display, wherein the second camera is configured to capture a second image. In addition, the device includes a depth map generator configured to generate depth information about one or more objects in a field-of-view (FOV) of the first and second cameras based at least in part on the first and second images.
H04N 13/271 - Image signal generators wherein the generated image signals comprise depth maps or disparity maps
H04N 13/239 - Image signal generators using stereoscopic image cameras using two 2D image sensors having a relative position equal to or related to the interocular distance
A secure processing system includes a memory having a secure partition and a non-secure partition, a neural network processing unit (NPU) configured to initiate transactions with the memory, and a memory protection unit (MPU) configured to filter the transactions. Each of the transactions includes at least an address of the memory to be accessed, one of a plurality of first master identifiers (IDs) associated with the NPU, and security information indicating whether the NPU is in a secure state or a non-secure state when the transaction is initiated. The MPU is to selectively deny access to the secure partition of the memory based at least in part on the memory address, the first master ID, and the security information associated with each of the transactions.
G06F 21/74 - Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information operating in dual or compartmented mode, i.e. at least one secure mode
G06F 3/06 - Digital input from, or digital output to, record carriers
Systems and methods according to one or more embodiments provide a low power current steering digital-to-analog converter. In one example, a device includes a current cell including a plurality of switches. The device further includes a current cell controller configured to selectively operate the plurality of switches. The plurality of switches is selectively operated to cause the current cell to generate a current signal in response to a first data signal. The plurality of switches is selectively operated to disable the current cell in an absence of the first data signal. The plurality of switches is selectively operated to transition the current cell to a common mode state before the current cell receives the first data signal. Related systems and methods are also provided.
H03M 1/68 - Digital/analogue converters with conversions of different sensitivity, i.e. one conversion relating to the more significant digital bits and another conversion to the less significant bits
H03M 1/08 - Continuously compensating for, or preventing, undesired influence of physical parameters of noise
28.
MULTICHANNEL, MULTIRATE, LATTICE WAVE FILTER SYSTEMS AND METHODS
Multichannel, multirate lattice wave filters receive digital signal channels at a first sample rate and include a first multiplexer to combine the digital signal channels into a first digital data stream, and a first lattice wave filter including first delay elements and a first feedback path to the first multiplexer. The first lattice wave filter produces a first output digital data stream having a second sample rate that is different than the first sample rate. The first multiplexer is configured to receive a first feedback signal through the first feedback path and combine the first feedback signal with the digital signal channels to produce the first digital data stream. The system may include a first processing branch having the first multiplexer and the first lattice wave filter structure, and a second processing branch having a second multiplexer and a second lattice wave filter structure.
Systems and methods include a wind detector to receive audio input signals and output a wind detection flag including a single channel wind detection flag and a cross channel wind detection flag, each wind detection flag indicating a presence or absence of wind noise, and a fusion smoothing module to receive the plurality of wind detection flags and generate an output wind detection flag. Microphones generate the plurality of audio input signals. The wind detector and the fusion smoothing module may comprise program instructions stored in the memory for execution by a digital signal processor. The wind detector is a single channel detector to receive a single audio channel of the audio input signal and generate the single channel wind noise flag, and a cross-channel detector to compute auto correlations and a cross correlation between two or more audio channels.
H04R 3/02 - Circuits for transducers for preventing acoustic reaction
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
Active noise cancellation (ANC) includes a reference sensor to sense external noise and generate a reference signal, an error sensor to sense noise in a noise cancellation zone and generate an error signal, a feedforward ANC subsystem to receive the reference and error signals and generate a first anti-noise signal to cancel external noise in a noise cancellation zone, a feedback ANC subsystem to receive the error signal and generate a second anti-noise signal to cancel the external noise in the cancellation zone, a wind detector to detect whether wind noise is present in the reference signal and output a wind noise detection status, and wind handler to control adaptation processing of the feedforward ANC subsystem and the feedback ANC subsystem in accordance with the wind noise detection status and mixing of the first and second anti-noise signals to generate an output anti-noise signal.
G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
Systems and methods are provided for improved noise performance of audio amplifiers. In one example, a system includes a multistage amplifier comprising at least a first stage amplifier and a second stage amplifier. The system further includes a plurality of switches disposed within the multistage amplifier to configure the multistage amplifier. The system further includes a control signal configured to control the multistage amplifier to a normal amplification mode or a mute state, wherein the multistage amplifier is adapted to amplify an input signal in the normal amplification mode, the multistage amplifier is adapted to output a zero signal in the mute state, and internal amplification stages of the multistage amplifier are disabled in the mute state, and output stages of each of the at least first stage amplifier and the second stage amplifier are electrically shorted and/or shorted to a fixed bias voltage in the mute state.
A method and apparatus for device personalization. A device is configured to receive first sensor data from one or more sensors, detect biometric information in the first sensor data, encode the biometric information as a first vector using one or more neural network models stored on the device, and configure a user interface of the device based at least in part on the first vector. For example, the profile information may include configurations, settings, preferences, or content to be displayed or rendered via the user interface. In some implementations, the first sensor data may comprise an image of a scene and the biometric information may comprise one or more facial features of a user in the scene.
H04N 21/422 - Input-only peripherals, e.g. global positioning system [GPS]
H04N 21/442 - Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed or the storage space available from the internal hard disk
H04N 21/466 - Learning process for intelligent management, e.g. learning user preferences for recommending movies
Systems and methods for amplifying an input signal include amplifier circuitry, an itail connection coupled between a positive voltage circuitry and the negative voltage circuitry and operable to generate an itail voltage corresponding to a greater of the positive voltage input signal (Vp) and the negative voltage input signal (Vn), a first resistor rgp disposed to receive the itail voltage and a first voltage corresponding to Vp, and a second resistor rgn disposed to receive the itail voltage and a second voltage corresponding to Vn. A first current output node is coupled to the output of rgp and operable to output a positive output current (Ioutp) corresponding to the current flowing through rgp, and a second current output is coupled to the output of rgn and operable to output a negative output current (Ioutn) corresponding to the current flowing through rgn.
Adaptive noise cancellation systems and methods comprise a reference sensor operable to sense environmental noise and generate a corresponding reference signal, an error sensor operable to sense noise in a noise cancellation zone and generate a corresponding error signal, a noise cancellation filter operable to receive the reference signal and generate an anti-noise signal to cancel the environmental noise in the cancellation zone, an adaptation module operable to receive the reference signal and the error signal and adaptively adjust the anti-noise signal, and a transient activity detection module operable to receive the reference signal, detect a transient noise event and selectively disable the adaptation module during the detected transient noise event.
G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
35.
METHOD AND SYSTEM FOR SECURING IN-VEHICLE ETHERNET LINKS
A method and system for securing in-vehicle ethernet links are disclosed. According to one embodiment, a method comprises receiving from an authenticator, via an insecure channel, a public key of the authenticator, a random number, and a challenge. A private key of the peer that was supplied to the peer is accessed from local storage at the peer. A state machine computes a session key for the peer, based on the random number, the public key of the authenticator, and the private key of the peer. The state machine computes a peer response to the challenge using the session key for the peer and a symmetric cipher function.
H04L 9/30 - Public key, i.e. encryption algorithm being computationally infeasible to invert and users' encryption keys not requiring secrecy
H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
H04L 29/06 - Communication control; Communication processing characterised by a protocol
A method and apparatus for inferencing on protected data. A user device retrieves protected data from a secure memory, generates inferences about the protected data using one or more neural network models stored on the user device, and updates a user interface of the user device based at least in part on the inferences. The secure memory is inaccessible to applications executing in a rich environment of the user device. Thus, in some aspects, the inferences may be generated, at least in part, by a neural network application executing in a trusted environment of the user device.
A method and system for bi-directional communications are disclosed. According to one embodiment, a method comprises configuring the first device to enter an active mode according to a non-overlapping (NOL) schedule, the second device being in a silent mode. A transmitter of the first device transmits a first local data signal for a duration not exceeding a maximum tolerable silent duration of the second device. The first device is configured to enter the silent mode after transmitting the first local data signal, according to the NOL schedule.
H04L 7/00 - Arrangements for synchronising receiver with transmitter
H04L 7/033 - Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal- generating means, e.g. using a phase-locked loop
H04L 5/14 - Two-way operation using the same type of signal, i.e. duplex
Systems and methods for differential data transmission using an unterminated transmission line comprise a plurality of switches configured to control a differential voltage output on a pair of output lines, wherein the plurality of switches have a first state in which a high voltage is output on a first of the pair of output lines and a low voltage is output on a second of the pair of output lines, and wherein the plurality of switches have a second state in which the low voltage is output on the first of the pair of output lines and the high voltage is output on the second of the pair of output lines. A transition switch with an output impedance equal to that of the output lines will discharge the lines during a state transition so as to reduce to power consumption associated with changing states of the transmission line.
A method and apparatus for updating pixel elements of a display device. The display device comprises a pixel array including a plurality of pixel elements and one or more light sources to illuminate the pixel array at a first instance of time. A data driver is configured to receive a frame of display data corresponding to an image to be displayed on the pixel array at a first instance of time. The data driver scans each row of the pixel array, during a pixel adjustment period prior to the first instance of time, to drive a plurality of first voltages onto the plurality of pixel elements, respectively, based on the received frame. The data driver further rescans a subset of rows of the pixel array, during the pixel adjustment period, to drive second voltages onto respective pixel elements in the subset of rows based on the received frame.
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
A semiconductor device comprises first mixer circuitry and processing circuitry. The first mixer circuitry is configured to generate a plurality of first mixer outputs through quadrature decomposition of a sensing signal. The first sensing signal corresponds to a capacitance of a first sensing electrode supplied with a drive signal. The quadrature decomposition is based on an in-phase local carrier which is in phase with the drive signal and an out-of-phase local carrier having a phase different from that of the in-phase local carrier. The plurality of first mixer outputs comprises an in-phase mixer output generated based on the in-phase local carrier and the sensing signal, and an out-of-phase mixer output generated based on the out-of-phase local carrier and the sensing signal.
A system and method for reducing electromagnetic interference comprises generating a first voltage signal based on a settling time of a first electrode, a slew rate of a signal generator, and a harmonic parameter, and driving the first electrode with the first voltage signal. The first voltage signal may be one of a capacitive sensing signal, display update signal, a transmission signal, and a selection signal. Further, a processing system may be configured to operate in one of an absolute capacitive sensing mode and a transcapacitive sensing mode.
A method and apparatus for content adaptive backlight control (CABC) is disclosed. A display device comprises a display surface including a plurality of pixel elements and a backlight configured to illuminate the display surface. A display driver of the display device is configured to receive a frame of display data, including pixel data for displaying an image on the display surface and backlight configuration data for adjusting the backlight when displaying the image. The display driver is further configured to update the plurality of pixel elements using the pixel data, and update an intensity of the backlight using the backlight configuration data. More specifically, the updates to the backlight and the display surface are performed concurrently for the received frame of display data.
G09G 3/34 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
A method and apparatus for overdriving pixel elements to a desired voltage. A display device comprises a pixel array and overdrive circuitry to determine a current pixel value for a first pixel element of the pixel array and a target pixel value for the first pixel element. The overdrive circuitry is further configured to determine a first voltage to be applied to the first pixel element to cause the first pixel element to transition from the current pixel value to the target pixel value by a first instance of time. The first voltage is determined based at least in part on a position of the first pixel element in the pixel array. The display device further comprises a data driver to apply the first voltage to the first pixel element before the first instance of time and a backlight to illuminate the pixel array at the first instance of time.
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
Data bus includes a device controller coupled to a first interface for digital communications using a first communications protocol, the device controller including a master bus controller controlling a multi-drop bus using a second communications protocol, and a slave device coupled to the multi-drop bus and configured to transmit and receive digital communications with the device controller using the second communications protocol. Each transmission line end is terminated using a device attached at one end of the transmission line and by another device attached at the other end. The second communications protocol supports multiple data rates using a fixed frame format. Safe synchronization may be established by systematically eliminating all false positions instead of searching for a valid candidate. Noise in the audio band may be lowered by scrambling of the data using a pseudo-random generator.
A method and apparatus for image processing. A data conversion and color-space mapping (DCM) circuit includes an inverse opto-electrical transfer function (IOETF), a color-space converter, and a color-space re-mapper. The IOETF receives image data for one or more frames acquired by an image capture device and transfers the image data from a non-linear domain to a linear domain. The color-space converter converts the linear image data from a first color space to a second color space, where each of the first and second color spaces is based on a gamut of the image capture device. The color-space re-mapper processes the image data to be rendered on a display device by remapping the converted image data from the second color space to a third color space, where the third color space is based on a gamut of the display device.
Systems and methods for multimodal classification include a plurality of expert modules, each expert module configured to receive data corresponding to one of a plurality of input modalities and extract associated features, a plurality of class prediction modules, each class prediction module configured to receive extracted features from a corresponding one of the expert modules and predict an associated class, a gate expert configured to receive the extracted features from the plurality of expert modules and output a set of weights for the input modalities, and a fusion module configured to generate a weighted prediction based on the class predictions and the set of weights. Various embodiments include one or more of an image expert, a video expert, an audio expert, class prediction modules, a gate expert, and a co-learning framework.
A voice-interaction device includes a plurality of input and output components configured to facilitate interaction between the voice-interaction device and a target user. The plurality of input and output components may include a microphone configured to sense sound and generate an audio input signal, a speaker configured to output an audio signal to the target user, and an input component configured to sense at least one non-audible interaction from the target user. A context controller monitors the plurality of input and output components and determines a current use context. A virtual assistant module facilitates voice communications between the voice-interaction device and the target user and configures one or more of the input and output components in response to the current use context. The current use context may include whisper detection, target user proximity, gaze direction tracking and other use contexts.
Systems and methods according to one or more embodiments are provided for improving noise performance in a delta sigma modulator comprising an adder, quantizer and nth order filter. The adder is operable to receive an input signal and a feedback signal, and output a modified input signal. The quantizer is operable to receive the modified input signal and output a quantized output signal, the quantized output signal having a corresponding quantization error. The nth order filter is operable to receive a quantization error value and generate the feedback signal, the nth order filter comprising a first memory element having a first error value, a second memory element having a second error value, and a gravity component operable to converge the first error value and the second error value when the input signal is approximately zero.
Sensing systems and methods that utilize lower-order zero row sum code division multiplexing (CDM) drive matrices to reduce or eliminate radiative emissions. Measurements corresponding to an input received at a sensing region of the input device are obtained by separately driving multiple subsets of transmitters of the input device, and obtaining measurement values corresponding to each separately-driven subset of transmitters via the receivers, wherein a plurality of measurement iterations are performed for each separately-driven subset of transmitters, the plurality of measurement iterations corresponding to a zero row sum CDM drive matrix for the separately-driven subsets of transmitters. An image of the input is generated based on the obtained measurements.
Automotive acceleration compensation force sensing includes determining a total force value from the measurements from force sensors, obtaining, from an accelerometer, an environmental acceleration value, and calculating an input object force value on an input surface using a total force value and the environmental acceleration value. Automotive acceleration compensation force sensing further includes reporting the input object force value.
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
G06F 3/0346 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
G06F 3/038 - Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
An audio processing device comprises audio input circuitry operable to receive audio input signals and to process the audio input signals to generate audio samples at a first rate. The audio processing device further comprises a first trigger engine operable to detect a keyword within the audio samples. Also, the audio processing device comprises a delay buffer operable to continuously receive and store the audio samples. The delay buffer is further operable to transfer the audio samples that are stored within the delay buffer to a host across a data bus at a second rate, which is faster than the first rate. Further, the delay buffer is operable to transfer the audio samples that are stored within the delay buffer to the host at the first rate, after the stored audio samples are transmitted.
Disclosed is an input device, comprising a touch sensor and a processing system. The touch sensor includes a touch sensing region and a plurality of pixels in the touch sensing region. The processing system is coupled to the touch sensor and comprises circuitry configured to: determine that a touch has occurred on a touch sensor; for each pixel included in the touch, receive touch information from the touch sensor; for each pixel included in the touch, determine a pixel response value for the pixel; and, compute a touch-based metric based on one or more pixel response values, wherein a model is used to perform behavioral authentication based on the touch-based metric.
A voice-activity detector (VAD) system comprises a microphone operable to receive and to process audio inputs from an environment to generate an analog audio input signal. The system further comprises an analog VAD operable to process the analog audio input signal to perform an initial detection of human speech, and operable to send a wake up command to a digital signal processing chain to awaken the digital signal processing chain from a sleep mode, when the analog VAD detects human speech. Further, the system comprises the digital signal processing chain operable to process the analog audio input signal to perform a secondary detection of human speech, and operable to output a signal indicating that human speech is detected, when the digital signal processing chain detects human speech. In one or more embodiments, the secondary detection of human speech is more accurate than the initial detection of human speech.
An audio processing device or method includes an audio transducer operable to receive audio input and generate an audio signal based on the audio input. The audio processing device or method also includes an audio signal processor operable to extract local features from the audio signal, such as Power-Normalized Coefficients (PNCC) of the audio signal. The audio signal processor also is operable to extract global features from the audio signal, such as chroma features and harmonicity features. A neural network is provided to determine a probability that a target audio is present in the audio signal based on the local and global features. In particular, the neural network is trained to output a value indicating whether the target audio is present and locally dominant in the audio signal.
G10L 25/78 - Detection of presence or absence of voice signals
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
G10L 25/18 - Speech or voice analysis techniques not restricted to a single one of groups characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
55.
VOICE ENHANCEMENT IN AUDIO SIGNALS THROUGH MODIFIED GENERALIZED EIGENVALUE BEAMFORMER
A real-time audio signal processing system includes an audio signal processor configured to process audio signals using a modified generalized eigenvalue (GEV) beamforming technique to generate an enhanced target audio output signal. The digital signal processor includes a sub-band decomposition circuitry configured to decompose the audio signal into sub-band frames in the frequency domain and a target activity detector configured to detect whether a target audio is present in the sub-band frames. Based on information related to the sub-band frames and the determination of whether the target audio is present in the sub-band frames, the digital signal processor is configured to use the modified GEV technique to estimate the relative transfer function (RTF) of the target audio source, and generate a filter based on the estimated RTF. The filter may then be applied to the audio signals to generate the enhanced audio output signal.
G10L 21/02 - Speech enhancement, e.g. noise reduction or echo cancellation
G10L 25/18 - Speech or voice analysis techniques not restricted to a single one of groups characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
G10L 21/0216 - Noise filtering characterised by the method used for estimating noise
56.
DISPLAY DEVICE, METHOD FOR CONTROLLING VOLTAGE IN DISPLAY PANEL, AND DISPLAY DRIVER
This display device comprises: a display panel including a plurality of pixel regions each including at least one pixel; a plurality of receiver electrodes provided respectively for the plurality of pixel regions and supplying a VCOM voltage; and a data writing line that transmits a data writing signal for writing display data to the plurality of pixel regions. While the display data is being written to a portion of the pixel regions among the plurality of pixel regions, a portion of the receiver electrodes among the plurality of receiver electrodes do not supply the VCOM voltage.
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
A force sensing apparatus includes a first layer having a first electrode disposed thereon, a second layer having a second electrode disposed thereon, and a spacer layer configured to transfer an input force exerted on the first layer to the second layer. The spacer layer causes a change in a separation distance between the first electrode and the second electrode in response to the input force. The force sensing apparatus further includes processing circuitry to detect a change in capacitive coupling between the first electrode and the second electrode based on the change in separation distance, and to determine force information about the input force based at least in part on the detected change in capacitive coupling.
A display driver comprises: digital gamma circuitry configured to generate a voltage data based on an image data for a pixel of interest; compensating circuitry configured to calculate a total current of the display panel; and correction circuitry. The correction circuitry is configured to correct the voltage data, based on the calculated total current.
A display driver is disclosed. The display driver includes: a memory configured to store control points defining a curve associated with a display panel; and shape calculation circuitry configured to: determine, based on the control points, a first intersection point of the curve and a width of a first line associated with the display panel; and modify image data of an image based on the first intersection point.
G09G 5/36 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of individual graphic patterns using a bit-mapped memory
60.
LOAD CURRENT SENSING CIRCUIT FOR CLASS-D AMPLIFIER
Systems and methods according to one or more embodiments are provided for sensing a current at an output of a switching amplifier. In one example, a system includes a first transistor switch coupled to a load configured to conduct a current in the load responsive to a first pulse width modulated control signal and a second transistor switch coupled to the load configured to conduct the current in the load responsive to a second pulse width modulated control signal. The system further includes a sample and hold circuit coupled between the load and a current sensing circuit configured to sample a voltage at the second transistor switch for a pre-determined sample time period in response to a midpoint of a second pulse width modulated control signal time period, and configured to provide the sampled voltage to the current sensing circuit.
A display driver is disclosed. The display driver includes: a memory that stores initial control points (CPs) defining a first gamma curve for a first analog state associated with a display panel (DP); CP calculation circuitry that generates, based on the initial CPs, calculated CPs for a second analog state associated with the DP; multiplexer circuitry that: inputs the calculated CPs, auxiliary CPs defining a second gamma curve, and a switching signal identifying a luminance of a region of an image; and outputs, based on the switching signal, selected CPs; and gamma curve calculation circuitry that: inputs a data value associated with the region of the image; generates, based on the selected CPs, a portion of an output gamma curve near the data value; and outputs a voltage data for displaying the region of the image on the DP based on the data value and the output gamma curve.
G09G 5/36 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of individual graphic patterns using a bit-mapped memory
Systems and methods for low latency adaptive noise cancellation include an audio sensor to sense environmental noise and generate a noise signal, an audio processing path to receive an audio signal, process the audio signal through an interpolation filter, and generate a primary audio signal having a first sample frequency, an adaptive noise cancellation processor to receive the noise signal and generate an anti-noise signal, a direct interpolator to receive the anti-noise signal and generate an anti-noise signal having the first sample frequency, and a limiter to provide clipping to reduce a number of bits in the anti-noise signal, an adder operable to combine the primary audio signal and the anti-noise signal and generate a combined output signal, and a low latency filter to process the combined output signal.
Systems and methods for sensing a current at an output of a switching amplifier include a first transistor switch coupled to a load configured to conduct a current in the load responsive to a first pulse width modulated control signal coupled to a first gate terminal of the first transistor switch. A second transistor switch is configured to conduct the current in the load responsive to a second pulse width modulated control signal coupled to a second gate terminal of the second transistor switch. A shielding switch is coupled between the load and a current sensing circuit, wherein the shielding switch is configured to provide a small signal voltage to the current sensing circuit in response to the second pulse width modulated control signal, the current sensing circuit is configured to sense the current travelling through the load responsive to the small signal voltage.
A system includes an amplification circuit and offset calibration circuit. The amplification circuit includes a modulation circuit operable to modulate a received signal, an amplifier operable to amplify the modulated signal, and a modulation circuit operable to demodulate the amplified signal. The offset calibration circuit includes a logic circuit operable to set a control signal and adjust the control signal based on an output of the amplification circuit, where the output is based on the demodulated signal, and a compensation signal generator operable to generate a compensation signal based on the control signal to compensate for an offset associated with the amplification circuit, and apply the compensation signal on the amplification circuit to adjust the output of the amplification circuit. The offset calibration circuit in conjunction with the application circuit reduces flicker, offset, and offset drift, and also suppresses the upmodulate ripple due to chopping.
Systems, methods, and apparatus for a circuit for synchronization of a reference signal and an output signal of a phased-lock loop (PLL) are disclosed. The method comprises continuously generating, by a clock detect circuit connected to the PLL, a clock detect signal indicating whether the reference signal of the PLL is present or lost. The method further comprises continuously sampling and storing, by a loop sampler circuit connected to the PLL, a voltage from a loop filter of the PLL, when the reference signal is present. In addition, the method comprises configuring a charge pump of the PLL into a high impedance state, thereby disabling the charge pump, when the clock detect signal indicates that the reference signal is lost. Further, the method comprises supplying the voltage to the PLL to maintain a frequency of the output signal of the PLL, when the reference signal is lost.
H03L 7/091 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
H03L 7/093 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
H03L 7/099 - Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop - Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
A hierarchical gate driver circuit for an array of pixel elements. The hierarchical gate driver circuit includes a shift register and two or more groups of gate lines drivers. The shift register is configured to activate a plurality of select lines based at least in part on a periodic clock signal. A first group of gate line drivers is configured to drive a plurality of first gate lines, each coupled to a respective row of first pixel elements in the array, when a first select line of the plurality of select lines is activated. A second group of gate line drivers is configured to drive a plurality of second gate lines, each coupled to a respective row of second pixel elements in the array, when a second select line of the plurality of select lines is activated.
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
An input device may include a matrix electrode array that includes various transmitter electrodes and various receiver electrodes. The transmitter electrodes may be disposed in a first direction. The receiver electrodes may be disposed in a second direction that is substantially parallel with the first direction. The input device may further include a first set of routing traces coupled to the transmitter electrodes and disposed underneath the transmitter electrodes in the first direction. The input device may further include a second set of routing traces coupled to the receiver electrodes and disposed underneath the receiver electrodes in the second direction.
A sensing device comprises sensor electrodes arranged in an array of rows and columns, and vias. A first vias is arranged in a first direction, and corresponds to a first column of sensor electrodes adjacent to a first side edge of the sensing device. A second via is arranged in a second direction different than the first direction, and corresponds to a second column of the sensor electrodes adjacent to a second side edge of the sensing device. Each of the sensor electrodes is configured to be coupled to a routing trace through one of the vias. In a first row of the plurality of sensor electrodes, a two vias are different distances from the first side edge and in a second row of the plurality of sensor electrodes, two vias are different distances from the second side edge.
A method and apparatus for authenticating a fingerprint image captured through an optical sensor. For at least some embodiments, light scattering characteristics associated with a fingerprint are determined and compared to a reference light scattering characteristic. The fingerprint is authenticated when the light scattering characteristics are within a threshold difference of the reference light scattering characteristic. For some embodiments, the light scattering characteristics associated with the fingerprint are compared to light scattering characteristics associated with one or more reference (enrollment) images. For at least some embodiments, the light scattering characteristics may be based on a correlation value based on identified pixels and one or more pixels neighboring the identified pixel.
An example method of driving a display having a touch sensor includes: generating a plurality of display frames having an alternating sequence of display and blanking periods; supplying pixel line data to the display during the display periods and sensing signals to the touch sensor during the blanking periods; and timing the blanking periods so that display frames of a first type each have a first number of the blanking periods and that display frames of a second type each have a second number of the blanking periods, the second number less than the first number.
Disclosed herein include a processing system, an input device, and methods for transcapacitive sensing. In one example, a processing system is configured to reduce the capacitive coupling between sensor electrodes arranged in a column of sensor electrodes and routing traces running below the sensor electrodes by isolating a receiver electrode selected from the sensor electrodes in the column from the other sensor electrodes in the column by applying a signal that is not modulated relative to the receiver electrode on sensor electrodes that are immediately adjacent the receiver electrode and not being utilized as a transmitter electrode.
Optical sensing systems and methods for imaging objects include under-display optical sensors with one or multiple discrete light sources positioned on, in or under the display. The optical sensors may include an array of optical sensing elements, e.g., photodetectors, arranged in or under the display. The displays include OLED or LCD displays.
H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
A method of transporting foveal image data is disclosed. A host device receives image data from an image source and renders a field-of-view (FOV) image using the image data. The host device further identifies a foveal region of the FOV image and renders a foveal image corresponding to the foveal region using the image data. More specifically, the foveal image may have a higher resolution than the foveal region of the FOV image. The host device may then transmit each of the foveal image and the FOV image, in its entirety, to a display device. For example, the host device may concatenate the foveal image with the FOV image to produce a frame buffer image, and then transmit the frame buffer image to the display device.
Embodiments herein provide a dual optical and capacitance sensor. During a first time period, the dual sensor uses optical sensing to capture a fingerprint (e.g., to identify or verify the fingerprint). During a second time period, the dual sensor uses one or more capacitive sensor electrodes to perform capacitive sensing. The capacitive sensing may be absolute capacitive sensing or transcapacitive sensing.
A method and related input device and processing system and are disclosed, the method comprising acquiring first capacitive measurements of first resulting signals responsive to driving a first sensing signal, wherein acquiring first capacitive measurements comprises receiving a predefined number of current pulses within a first burst period. The method further comprises acquiring second capacitive measurements of second resulting signals responsive to driving a second sensing signal having a greater sensing frequency. Acquiring the second capacitive measurements comprises inserting, based at least on the sensing frequency of the second sensing signal, one or more null time periods within the second burst period such that the same number of current pulses is received during the second burst period.
A system and method for an electronic device for imaging a biometric object having structural features of interest is disclosed. The electronic device includes a display including rows of pixel elements, the rows of pixel elements being parallel a first primary direction along a first axis and an optical sensor mounted underneath the display, the optical sensor being parallel to a second primary direction along a second axis. The second axis is rotated at an angle relative the first axis to adjust a moiré pattern outside of a frequency range of the features of interest.
A system and method for encoding, transmitting and updating a display based on demura calibration information for a display device comprises generating demura correction coefficients based on display color information, separating coherent components from the demura correction coefficients to generate residual information, and encode the residual information using a first encoding technique. Further, the image data may be divided into data streams, compressed and transmitted to from a host device to a display driver of a display device. The display driver decompresses and drives subpixels of the pixels in based on the decompressed data. The display driver updates the subpixels of a display using corrected greyscale values for each subpixel are determined from the decompressed data.
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
78.
DEVICE AND METHOD FOR DRIVING DISPLAY PANEL IN RESPONSE TO IMAGE DATA
A display driver includes: a receiver configured to receive image data of each line of a display panel from an external device; a line latch circuit having a line latch configured to latch the image data of each line received by the receiver in response to a strobe signal; a driving circuit section which drives the display panel in response to the image data latched by the line latch; and a timing controller configured to generate the strobe signal. The receiver is configured to detect occurrence of transmission error in data transmission about each line. The timing controller is configured to generate the strobe signal in response to a detection result of the occurrence of transmission error.
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 5/00 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
Embodiments herein include a method for tracking objects in a sensing region that includes determining a first position of a first object and a first position of a second object in the sensing region. The method includes determining that one of the objects has left the sensing region and one of the objects has remained in the sensing region at a current position. The method includes calculating a speed of each of the first object and the second object based on a difference in position of each respective object in two previous frames divided by a time interval between the two previous frames. The method includes predicting a next position of each of the objects based on the first position of each of the objects and the speed of each of the objects, and determining which of the objects remained in the sensing region based on the predicted next positions.
A hybrid capacitive and optical fingerprint sensor system includes: capacitive sensor electrodes; an optical image sensor having a plurality of image sensor pixels; light conditioning elements, configured to condition light from a sensing region of the hybrid capacitive and optical fingerprint sensor for detection by the optical image sensor; and a processing system having one or more controllers, configured to operate the capacitive sensor electrodes in a low-power mode of operation for the hybrid capacitive and optical fingerprint sensor, and to operate the optical image sensor to acquire an image from the sensing region of the hybrid capacitive and optical fingerprint sensor.
Embodiments herein describe an input device that includes a rectangular array of sensor electrodes connected to sensor modules that measure capacitive sensing signals corresponding to the electrodes. When performing code division multiplexing (CDM), multiple sensor electrodes are coupled to the same sensor module. As such, the sensor module generates a measurement that represents the sum of the charges on the sensor electrodes rather than an individual charge on a single sensor electrode. By repeatedly sensing multiple sensor electrodes in parallel, the input device can determine a change of capacitance for each individual sensor electrode.
A method and related processing system and input device are disclosed, the method comprising driving a first capacitive sensing signal having a predefined first sensing frequency onto a first group of a plurality of sensor electrodes, and acquiring first capacitive measurements of resulting signals received by a second group of the plurality of sensor electrodes. Acquiring first capacitive measurements comprises applying a first demodulation signal having a predefined mixing period defined within a sensing period associated with the first sensing frequency. The method further comprises operating, based on the first demodulation signal, one or more switching elements coupled with one or more sensor electrodes of the first group or the second group, wherein the one or more switching elements are in a conducting state during the mixing period.
Bandwidth management includes receiving, by a branch device, a requested display identification data structure from a display device. The branch device modifies the requested display identification data structure based on a total bandwidth through a constricted port on the branch device to obtain a modified display identification data structure. The branch device transmits the modified display identification data structure to a source device.
H04N 21/442 - Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed or the storage space available from the internal hard disk
H04N 21/436 - Interfacing a local distribution network, e.g. communicating with another STB or inside the home
Systems and methods according to one or more embodiments are provided for a hum reduction circuit implemented to provide a ground path between an audio generating device and a powered headset. In one example, a system includes a jack configured to accept a plug comprising a first electrical ground connection. The system also includes a switch coupled to the jack at a first end and coupled to second electrical ground connection at a second end. The system also includes the switch is configured to couple to the first electrical ground at the first end. The system further includes a bias control signal coupled to the switch, configured to control a switch bias, where a first switch bias electrically couples the first electrical ground to the second electrical ground, and a second switch bias electrically decouples the first electrical ground from the second electrical ground.
Systems and methods for processing multichannel audio signals include receiving a multichannel time-domain audio input, transforming the input signal to plurality of multi-channel frequency domain, k-spaced under-sampled subband signals, buffering and delaying each channel, saving a subset of spectral frames for prediction filter estimation at each of the spectral frames, estimating a variance of the frequency domain signal at each of the spectral frames, adaptively estimating the prediction filter in an online manner using a recursive least squares (RLS) algorithm, linearly filtering each channel using the estimated prediction filter, nonlinearly filtering the linearly filtered output signal to reduce residual reverberation and the estimated variances, producing a nonlinearly filtered output signal, and synthesizing the nonlinearly filtered output signal to reconstruct a dereverberated time-domain multi-channel audio signal.
A method of operating a plurality of electrodes, and a related processing system and input device are disclosed. The method comprises driving, within a first time period, a plurality of sensor electrodes with a first signal. A first portion of the plurality of sensor electrodes defines a first sensing region within a first region, and a second portion of the plurality of sensor electrodes defines a first border region within the first region. The method further comprises driving a plurality of mitigation electrodes with a second, opposite polarity signal to mitigate electromagnetic emissions resulting from driving the plurality of sensor electrodes. The plurality of mitigation electrodes defines a second region adjacent to the first border region. The method further comprises acquiring, responsive to driving the plurality of sensor electrodes, first capacitive measurements with the first portion.
An active noise cancellation system includes a sensor operable to sense environmental noise and generate a corresponding reference signal, a fixed noise cancellation filter including a predetermined model of the active noise cancellation system operable to generate an anti-noise signal, and a tunable noise cancellation filter operable to modify the anti-noise signal in accordance with stored coefficients, wherein the tunable noise cancellation filter is further operable to modify the stored coefficients in real-time based on user feedback and generate a tuned anti-noise signal that models tunable deviations from the predetermined noise model. A graphical user interface is operable to receive user adjustments of tunable parameters in real-time, the tunable parameters corresponding to at least one of the stored coefficients.
G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
88.
ERROR AMPLIFYING AND FREQUENCY COMPENSATING CIRCUITS AND METHODS
Methods and systems for implementing a closed loop DC-DC converter utilize a compensator to stabilize the output voltage of the DC-DC converter while improving the loop gain in the band of interest. A compensator may be implemented by an operational amplifier and a feedback circuit. The operational amplifier may be configured to receive a fraction of sensed output voltage at the non-inverting terminal and compare the sensed output voltage with the voltage received at the inverting terminal to generate an error signal which is used to determine the duty cycle of a pulse-width modulated signal.
Audio signal processing for adaptive de-reverberation uses a least mean squares (LMS) filter that has improved convergence over conventional LMS filters, making embodiments practical for reducing the effects of reverberation for use in many portable and embedded devices, such as smartphones, tablets, laptops, and hearing aids, for applications such as speech recognition and audio communication in general. The LMS filter employs a frequency-dependent adaptive step size to speed up the convergence of the predictive filter process, requiring fewer computational steps compared to a conventional LMS filter applied to the same inputs. The improved convergence is achieved at low memory consumption cost. Controlling the updates of the prediction filter in a high non-stationary condition of the acoustic channel improves the performance under such conditions. The techniques are suitable for single or multiple channels and are applicable to microphone array processing.
G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
An optical biometric sensor is disclosed. The optical biometric sensor includes a filter layer having a top surface and a bottom surface. The filter layer includes a light filter including a blocking material forming an array of apertures; a substrate including an electrical interconnect comprising a set of electrical conductors. The biometric sensor further includes an optical sensor including an array of sensing elements mounted to the bottom surface of the substrate, wherein sensing elements in the array of sensing elements sensors are aligned with the array of apertures and electrically connected to the electrical interconnect.
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
H01L 27/32 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
91.
AUDIO DIGITAL-TO-ANALOG CONVERTER WITH ENHANCED DYNAMIC RANGE
An audio digital-to-analog converter (DAC) achieves high dynamic range with low power consumption using a segmented DAC, also referred to as a noise shaped splitter. The noise shaped splitter is dynamically reconfigured based on envelope detection that tracks the amplitude of an n-bit digital input signal to the segmented DAC. The amplitude of the n-bit digital input signal can be expressed as the magnitude of a numerical value corresponding to the n bits of the digital signal. Based on the amplitude of the digital input signal, certain segments of the segmented DAC are bypassed and the components of each bypassed segment are turned off, saving power and reducing noise, and achieving improved dynamic range along with lower power consumption.
Systems and methods according to one or more embodiments are provided for a current comparator with biasing circuitry to provide for low power consumption and high-speed performance. In one example, a system includes an input port to receive a current pulse and an amplifier configured to provide a voltage pulse at an output port in response to the current pulse. The system also includes a first biasing circuit coupled between the output port and the input port to selectively limit a voltage at the input port. The system further includes a second biasing circuit coupled to the amplifier to selectively adjust a bias of the amplifier.
Disclosed is a system and method for performing spoof detection. The method includes: receiving, by a processor from a biometric sensor, an input image of a biometric; obtaining, by the processor, alignment information that aligns the input image to an enrollment image; determining, by the processor, an overlap region and a non-overlap region of the input image relative to the enrollment image; extracting, by the processor, one or more anti-spoof features from the input image based on one or more of the overlap region and the non-overlap region; and, determining, by the processor, whether the input image is a replica of the biometric based on the one or more anti-spoof features.
Disclosed are a system and method for performing spoof detection. The method includes: receiving, by a processor from a biometric sensor, an input image of a biometric; extracting, by the processor, one or more anti-spoof metrics from the input image; receiving, by the processor, an anti-spoof template corresponding to the biometric; for a first anti-spoof metric, computing, by the processor, a differential value between a value of the first anti-spoof metric extracted from the input image and a value of the first anti-spoof metric in the anti-spoof template; and determining, by the processor, whether the input image is a replica of the biometric based on the differential value.
Disclosed are a system and method for performing spoof detection. The method includes: receiving, by processor from a biometric sensor, an input image of a biometric; obtaining, by the processor, keypoint locations of keypoints in the input image, wherein keypoints in the input image comprise local regions of interest in the input image; computing, by the processor, one or more anti-spoof metrics of the input image based on the keypoint locations; and, determining, by the processor, whether the input image is a replica of the biometric based on the one or more anti-spoof metrics.
An input device and related processing system and method are disclosed for acquiring capacitive measurements. The input device comprises a plurality of sensor electrodes having a repeating arrangement. The plurality of sensor electrodes comprises first sensor electrodes and second sensor electrodes, wherein each first sensor electrode is bordered by a plurality of the second sensor electrodes and forms a respective plurality of sensing nodes with respective ones of the plurality of the second sensor electrodes. The input device further comprises a processing system coupled with the plurality of sensor electrodes. The processing system is configured to sequentially acquire, for each first sensor electrode, a respective plurality of individual measurements, and determine, for each first sensor electrode and using the plurality of individual measurements, a respective plurality of transcapacitive measurements corresponding to the respective plurality of sensing nodes.
Systems and methods for optical imaging using an optical sensor in an active area of the display are described. The optical sensor includes a set of detector elements positioned in a detector plane; a transparent layer; and a set of first reflective surfaces in the transparent layer. Each reflective surface in the first set of reflective surfaces is positioned to receive light from a portion of a sensing region of the display and to reflect the received light. The optical sensor further includes a second set of reflective surfaces, each reflective surface in the second set of reflective surfaces is positioned to receive the transmitted light from the first set of reflective surfaces, and to further reflect the received light towards one of the set of detector elements.
An optical fingerprint sensor includes: cover glass for receiving a finger; a transparent electrode layer below a bottom surface of the cover glass; an organic light emitting diode layer (OLED) below the transparent electrode layer; and a metal electrode layer below the OLED layer. Multiple openings extend through each of the transparent electrode layer, OLED layer, and metal electrode layer, and transmit reflected light reflected from a top surface of the cover glass when a finger is positioned over the top surface of the cover glass. A collimator or pinhole filter is below the metal electrode layer, and includes multiple apertures for transmitting the reflected light after the reflected light is transmitted through the multiple openings. An imager is below the bottom surface of the collimator or pinhole filter, and includes an array of pixels that detects the reflected light after the reflected light is transmitted through the multiple apertures.
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G09G 3/3225 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
99.
FULL-BRIDGE STRAIN-GAUGE ARRAY OF FINGER THERMAL COMPENSATION
A force sensor having a strain gauge array including force sensing electrodes arranged in a full-bridge configuration comprising at least two of a first resistor type and at least two of a second resistor type, wherein the at least two of the first resistor type form a first force sensing node and the at least two of the second resistor type form a second force sensing node, a processing system communicatively coupled to the force sensing electrodes, the processing system being configured to receive a first signal from the first force sensing node and a second signal from the second force sensing node, wherein the first signal includes a thermal response, and the second signal includes the thermal response and an applied force, and remove the thermal response by comparing the first and second signals to obtain the applied force.
G01L 1/22 - Measuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
This disclosure generally provides input devices, processing systems and methods for touch and force sensing utilizing combination sensor conductors. The combination sensor conductors are configurable as capacitive sensor conductors and force sensor conductors via operation of a processing system.
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