IPC Classification

Class code (prefix) Descriptions Number of results
H04N 1/00 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
H04N 1/03 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information pick-up with photodetectors arranged in a substantially linear array
H04N 1/04 Scanning arrangements
H04N 1/06 Scanning arrangements using cylindrical picture-bearing surfaces
H04N 1/08 Mechanisms for mounting or holding the sheet around the drum
H04N 1/10 Scanning arrangements using flat picture-bearing surfaces
H04N 1/12 Scanning arrangements using the sheet-feed movement as the slow scanning component
H04N 1/14 Scanning arrangements using the sheet-feed movement as the slow scanning component using a rotating endless belt carrying the scanning heads
H04N 1/16 Scanning arrangements using the sheet-feed movement as the slow scanning component using a rotating helical element
H04N 1/17 Scanning arrangements the scanning speed being dependent on content of picture
H04N 1/19 Scanning arrangements using multi-element arrays
H04N 1/21 Intermediate information storage
H04N 1/23 Reproducing arrangements
H04N 1/024 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads
H04N 1/27 Reproducing arrangements involving production of a magnetic intermediate picture
H04N 1/028 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information pick-up
H04N 1/029 Heads optically focused on only one picture element at a time
H04N 1/031 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
H04N 1/032 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information reproduction
H04N 1/034 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information reproduction using ink, e.g. ink-jet heads
H04N 1/036 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof - Details of scanning heads for picture-information reproduction for optical reproduction
H04N 1/38 Circuits or arrangements for blanking or otherwise eliminating unwanted parts of pictures
H04N 1/40 Picture signal circuits
H04N 1/41 Bandwidth or redundancy reduction
H04N 1/42 Systems for two-way working
H04N 1/44 Secrecy systems
H04N 1/46 Colour picture communication systems
H04N 1/047 Detection, control or error compensation of scanning velocity or position
H04N 1/48 Picture signal generators
H04N 1/50 Picture reproducers
H04N 1/52 Circuits or arrangements for halftone screening
H04N 1/053 Detection, control or error compensation of scanning velocity or position in main scanning direction, e.g. synchronisation of line start or picture elements in a line
H04N 1/54 Conversion of colour picture signals to a plurality of signals some of which represent particular mixed colours, e.g. for textile printing
H04N 1/56 Processing of colour picture signals
H04N 1/58 Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction
H04N 1/60 Colour correction or control
H04N 1/62 Retouching, i.e. modification of isolated colours only or in isolated picture areas only
H04N 1/64 Colour picture communication systems - Details therefor, e.g. coding or decoding means therefor
H04N 1/107 Scanning arrangements using flat picture-bearing surfaces with manual scanning
H04N 1/113 Scanning arrangements using oscillating or rotating mirrors
H04N 1/191 Scanning arrangements using multi-element arrays the array comprising a one-dimensional array
H04N 1/192 Simultaneously scanning picture elements on one main scanning line
H04N 1/193 Simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays
H04N 1/195 Scanning arrangements using multi-element arrays the array comprising a two-dimensional array
H04N 1/203 Simultaneous scanning of two or more separate pictures
H04N 1/207 Simultaneous scanning of the original picture and the reproduced picture with a common scanning device
H04N 1/327 Initiating, continuing or ending a single-mode communication; Handshaking therefor
H04N 1/333 Mode signalling or mode changing; Handshaking therefor
H04N 1/387 Composing, repositioning or otherwise modifying originals
H04N 1/393 Enlarging or reducing
H04N 1/401 Compensating positionaly unequal response of the pick-up or reproducing head
H04N 1/403 Discrimination between the two tones in the picture signal of a two-tone original
H04N 1/405 Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
H04N 1/407 Control or modification of tonal gradation or of extreme levels, e.g. background level
H04N 1/409 Edge or detail enhancement; Noise or error suppression
H04N 1/411 Bandwidth or redundancy reduction for the transmission or reproduction of two-tone pictures, e.g. black and white pictures
H04N 1/413 Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
H04N 1/415 Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks
H04N 1/417 Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding
H04N 1/419 Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which encoding of the length of a succession of picture-elements of the same value along a scanning line is the only encoding step
H04N 3/00 Scanning details of television systems; Combination thereof with generation of supply voltages
H04N 3/02 Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
H04N 3/04 Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture
H04N 3/06 Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving lens or other refractor
H04N 3/08 Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector
H04N 3/09 Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector for electromagnetic radiation in the invisible region, e.g. infra-red
H04N 3/10 Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
H04N 3/12 Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells, or light relays
H04N 3/14 Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by means of electrically scanned solid-state devices
H04N 3/16 Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube
H04N 3/18 Generation of supply voltages, in combination with electron beam deflecting
H04N 3/19 Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages
H04N 3/20 Prevention of damage to cathode-ray tubes in event of failure of scanning
H04N 3/22 Circuits for controlling dimensions, shape or centering of picture on screen
H04N 3/23 Distortion correction, e.g. for pincushion distortion correction, S-correction
H04N 3/24 Blanking circuits
H04N 3/26 Modifications of scanning arrangements to improve focusing
H04N 3/27 Circuits special to multi-standard receivers
H04N 3/28 Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical producing multiple scanning, i.e. using more than one spot at the same time
H04N 3/30 Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
H04N 3/32 Velocity varied in dependence upon picture information
H04N 3/34 Elemental scanning area oscillated rapidly in direction transverse to main scanning direction
H04N 3/36 Scanning of motion picture films, e.g. for telecine
H04N 3/38 Scanning of motion picture films, e.g. for telecine with continuously moving film
H04N 3/40 Scanning of motion picture films, e.g. for telecine with intermittently moving film
H04N 3/185 Maintaining dc voltage constant
H04N 3/223 Controlling dimensions
H04N 3/227 Centering
H04N 3/233 Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements
H04N 3/237 Distortion correction, e.g. for pincushion distortion correction, S-correction using passive elements
H04N 5/00 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details of television systems
H04N 5/04 Synchronising
H04N 5/05 Synchronising circuits with arrangements for extending range of synchronisation, e.g. by using switching between several time constants
H04N 5/06 Generation of synchronising signals
H04N 5/08 Separation of synchronising signals from picture signals
H04N 5/10 Separation of line synchronising signal from frame synchronising signal
H04N 5/12 Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
H04N 5/14 Picture signal circuitry for video frequency region
H04N 5/16 Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
H04N 5/18 Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
H04N 5/20 Circuitry for controlling amplitude response
H04N 5/21 Circuitry for suppressing or minimising disturbance, e.g. moire or halo
H04N 5/28 Mobile studios
H04N 5/30 Transforming light or analogous information into electric information
H04N 5/32 Transforming X-rays
H04N 5/33 Transforming infra-red radiation
H04N 5/38 Transmitter circuitry
H04N 5/40 Modulation circuits
H04N 5/42 Transmitter circuitry for transmitting at will black-and-white or colour signals
H04N 5/44 Receiver circuitry
H04N 5/45 Picture in picture
H04N 5/46 Receiver circuitry for receiving on more than one standard at will
H04N 5/50 Tuning indicators; Automatic tuning control
H04N 5/52 Automatic gain control
H04N 5/53 Keyed automatic gain control
H04N 5/54 Automatic gain control for positively-modulated picture signals
H04N 5/56 Automatic gain control for negatively-modulated picture signals
H04N 5/57 Control of contrast or brightness
H04N 5/58 Control of contrast or brightness in dependence upon ambient light
H04N 5/59 Control of contrast or brightness in dependence upon beam current of cathode ray tube
H04N 5/60 Receiver circuitry for the sound signals
H04N 5/62 Intercarrier circuits, i.e. heterodyning sound and vision carriers
H04N 5/63 Generation or supply of power specially adapted for television receivers
H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers
H04N 5/65 Holding-devices for protective discs or for picture masks
H04N 5/66 Transforming electric information into light information
H04N 5/067 Arrangements or circuits at the transmitter end
H04N 5/68 Circuit details for cathode-ray display tubes
H04N 5/70 Circuit details for electroluminescent devices
H04N 5/72 Modifying the appearance of television pictures by optical filters or diffusing screens
H04N 5/073 Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations
H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor
H04N 5/76 Television signal recording
H04N 5/77 Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
H04N 5/78 Television signal recording using magnetic recording
H04N 5/80 Television signal recording using electrostatic recording
H04N 5/82 Television signal recording using electrostatic recording using deformable thermoplastic recording medium
H04N 5/83 Television signal recording using electrostatic recording using deformable thermoplastic recording medium on disks or drums
H04N 5/84 Television signal recording using optical recording
H04N 5/85 Television signal recording using optical recording on discs or drums
H04N 5/87 Producing a motion picture film from a television signal
H04N 5/89 Television signal recording using holographic recording
H04N 5/90 Television signal recording using holographic recording on discs or drums
H04N 5/91 Television signal processing therefor
H04N 5/92 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
H04N 5/93 Regeneration of the television signal or of selected parts thereof
H04N 5/94 Signal drop-out compensation
H04N 5/95 Time-base error compensation
H04N 5/202 Gamma control
H04N 5/205 Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
H04N 5/208 Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
H04N 5/213 Circuitry for suppressing or minimising impulsive noise
H04N 5/217 Circuitry for suppressing or minimising disturbance, e.g. moire or halo in picture signal generation
H04N 5/222 Studio circuitry; Studio devices; Studio equipment
H04N 5/225 Television cameras
H04N 5/228 Circuit details for pick-up tubes
H04N 5/232 Devices for controlling television cameras, e.g. remote control
H04N 5/235 Circuitry for compensating for variation in the brightness of the object
H04N 5/238 Circuitry for compensating for variation in the brightness of the object by influencing optical part of the camera
H04N 5/243 Circuitry for compensating for variation in the brightness of the object by influencing the picture signal
H04N 5/247 Arrangement of television cameras
H04N 5/253 Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine
H04N 5/257 Picture signal generators using flying-spot scanners
H04N 5/262 Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects
H04N 5/265 Mixing
H04N 5/268 Signal distribution or switching
H04N 5/272 Means for inserting a foreground image in a background image, i.e. inlay, outlay
H04N 5/275 Generation of keying signals
H04N 5/278 Subtitling
H04N 5/321 Transforming X-rays with video transmission of fluoroscopic images
H04N 5/325 Image enhancement, e.g. by subtraction techniques using polyenergetic X-rays
H04N 5/335 Transforming light or analogous information into electric information using solid-state image sensors [SSIS]
H04N 5/341 Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled
H04N 5/343 Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled by switching between different modes of operation using different resolutions or aspect ratios, e.g. between still and video mode or between interlaced and non-interlaced mode
H04N 5/345 Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled by partially reading an SSIS array
H04N 5/347 Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled by combining or binning pixels in SSIS
H04N 5/349 Extracting pixel data from an image sensor by controlling scanning circuits, e.g. by modifying the number of pixels having been sampled or to be sampled for increasing resolution by shifting the sensor relative to the scene
H04N 5/351 Control of the SSIS depending on the scene, e.g. brightness or motion in the scene
H04N 5/353 Control of the integration time
H04N 5/355 Control of the dynamic range
H04N 5/357 Noise processing, e.g. detecting, correcting, reducing or removing noise
H04N 5/359 Noise processing, e.g. detecting, correcting, reducing or removing noise applied to excess charges produced by the exposure, e.g. smear, blooming, ghost image, crosstalk or leakage between pixels
H04N 5/361 Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current
H04N 5/363 Noise processing, e.g. detecting, correcting, reducing or removing noise applied to reset noise, e.g. KTC noise
H04N 5/365 Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
H04N 5/367 Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response applied to defects, e.g. non-responsive pixels
H04N 5/369 SSIS architecture; Circuitry associated therewith
H04N 5/372 Charge-coupled device [CCD] sensors; Time delay and integration [TDI] registers or shift registers specially adapted for SSIS
H04N 5/374 Addressed sensors, e.g. MOS or CMOS sensors
H04N 5/376 Addressing circuits
H04N 5/378 Readout circuits, e.g. correlated double sampling [CDS] circuits, output amplifiers or A/D converters
H04N 5/445 Receiver circuitry for displaying additional information
H04N 5/455 Demodulation-circuits
H04N 5/645 Mounting of picture tube on chassis or in housing
H04N 5/655 Construction or mounting of chassis, e.g. for varying the elevation of the tube
H04N 5/761 Systems for programming the time at which predetermined television channels will be selected for recording
H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
H04N 5/775 Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
H04N 5/781 Television signal recording using magnetic recording on disks or drums
H04N 5/782 Television signal recording using magnetic recording on tape
H04N 5/783 Adaptations for reproducing at a rate different from the recording rate
H04N 5/784 Television signal recording using magnetic recording on a sheet
H04N 5/903 Television signal recording using variable electrical capacitive recording
H04N 5/907 Television signal recording using static stores, e.g. storage tubes or semiconductor memories
H04N 5/911 Television signal processing therefor for the suppression of noise
H04N 5/913 Television signal processing therefor for scrambling
H04N 5/915 Television signal processing therefor for field- or frame-skip recording or reproducing
H04N 5/917 Television signal processing therefor for bandwidth reduction
H04N 5/919 Television signal processing therefor for bandwidth reduction by dividing samples or signal segments, e.g. television lines, among a plurality of recording channels
H04N 5/921 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by recording or reproducing the baseband signal
H04N 5/922 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by modulation of the signal on a carrier wave, e.g. amplitude or frequency modulation
H04N 5/923 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
H04N 5/924 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using duty cycle modulation
H04N 5/926 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
H04N 5/928 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the sound signal being pulse code modulated and recorded in time division multiplex with the modulated video signal
H04N 5/931 Regeneration of the television signal or of selected parts thereof for restoring the level of the reproduced signal
H04N 5/932 Regeneration of analogue synchronisation signals
H04N 5/935 Regeneration of digital synchronisation signals
H04N 5/937 Regeneration of the television signal or of selected parts thereof by assembling picture element blocks in an intermediate store
H04N 5/945 Signal drop-out compensation for signals recorded by pulse code modulation
H04N 5/953 Time-base error compensation by using an analogue memory, e.g. a CCD-shift register, the delay of which is controlled by a voltage controlled oscillator
H04N 5/956 Time-base error compensation by using a digital memory with independent write-in and read-out clock generators
H04N 5/3722 Charge-coupled device [CCD] sensors; Time delay and integration [TDI] registers or shift registers specially adapted for SSIS using frame interline transfer [FIT]
H04N 5/3725 Charge-coupled device [CCD] sensors; Time delay and integration [TDI] registers or shift registers specially adapted for SSIS using frame transfer [FT]
H04N 5/3728 Charge-coupled device [CCD] sensors; Time delay and integration [TDI] registers or shift registers specially adapted for SSIS using interline transfer [IT]
H04N 5/3745 Addressed sensors, e.g. MOS or CMOS sensors having additional components embedded within a pixel or connected to a group of pixels within a sensor matrix, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
H04N 5/7613 Systems for programming the time at which predetermined television channels will be selected for recording by using data entered by the user and a reference timing clock incorporated in the recorder
H04N 5/7617 Systems for programming the time at which predetermined television channels will be selected for recording by using data entered by the user and reference data transmitted by the broadcasting station
H04N 5/7822 Television signal recording using magnetic recording on tape with stationary magnetic heads
H04N 5/7824 Television signal recording using magnetic recording on tape with rotating magnetic heads
H04N 5/7826 Television signal recording using magnetic recording on tape with rotating magnetic heads involving helical scanning of the magnetic tape
H04N 5/7828 Television signal recording using magnetic recording on tape with rotating magnetic heads involving transversal scanning of the magnetic tape
H04N 7/00 Television systems
H04N 7/01 Conversion of standards
H04N 7/03 Subscription systems therefor
H04N 7/04 Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
H04N 7/06 Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier
H04N 7/08 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band
H04N 7/10 Adaptations for transmission by electrical cable
H04N 7/12 Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
H04N 7/14 Systems for two-way working
H04N 7/15 Conference systems
H04N 7/16 Analogue secrecy systems; Analogue subscription systems
H04N 7/18 Closed-circuit television systems, i.e. systems in which the signal is not broadcast
H04N 7/20 Adaptations for transmission via a GHz frequency band, e.g. via satellite
H04N 7/22 Adaptations for optical transmission
H04N 7/24 Systems for the transmission of television signals using pulse code modulation
H04N 7/025 Systems for transmission of digital non-picture data, e.g. of text during the active part of a television frame
H04N 7/26 using bandwidth reduction (information reduction by code conversion in general H03M 7/30)
H04N 7/28 using vector coding
H04N 7/30 involving transform coding (H04N 7/50 takes precedence;digital computers for performing complex mathematical operations, e.g. domain transformation, G06F 17/14)
H04N 7/32 involving predictive coding (H04N 7/48, H04N 7/50 take precedence);;
H04N 7/34 using spatial prediction
H04N 7/035 Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
H04N 7/36 using temporal prediction
H04N 7/38 involving delta modulation
H04N 7/40 adaptive
H04N 7/42 involving differential modulation
H04N 7/44 adaptive
H04N 7/045 Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier the carrier being frequency modulated
H04N 7/46 using subsampling at the coder and sample restitution by interpolation at the coder or decoder
H04N 7/48 involving pulse code modulation and predictive coding
H04N 7/50 involving transform and predictive coding
H04N 7/52 Systems for transmission of a pulse code modulated with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
H04N 7/54 Systems for transmission of a pulse code modulated with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous
H04N 7/56 Synchronising systems therefor
H04N 7/64 Systems for detection or correction of transmission errors (coding, decoding or code conversion for error detection or error correction in general H03M 13/00)
H04N 7/66 using redundant codes
H04N 7/68 using error concealment
H04N 7/081 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band the additional information signals being transmitted by means of a subcarrier
H04N 7/083 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band with signal insertion during the vertical and the horizontal blanking interval
H04N 7/084 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band with signal insertion during the horizontal blanking interval
H04N 7/085 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band with signal insertion during the horizontal blanking interval the inserted signal being digital
H04N 7/087 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band with signal insertion during the vertical blanking interval
H04N 7/088 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band with signal insertion during the vertical blanking interval the inserted signal being digital
H04N 7/167 Systems rendering the television signal unintelligible and subsequently intelligible
H04N 7/169 Systems operating in the time domain of the television signal
H04N 7/171 Systems operating in the amplitude domain of the television signal
H04N 7/173 Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
H04N 9/00 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details of colour television systems
H04N 9/04 Picture signal generators
H04N 9/07 Picture signal generators with one pick-up device only
H04N 9/09 Picture signal generators with more than one pick-up device
H04N 9/10 Picture signal generators using optical-mechanical scanning means only
H04N 9/11 Scanning of colour motion picture films, e.g. for telecine
H04N 9/12 Picture reproducers
H04N 9/14 Picture reproducers using optical-mechanical scanning means only
H04N 9/16 Picture reproducers using cathode ray tubes
H04N 9/18 Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals
H04N 9/20 Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube
H04N 9/22 Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
H04N 9/24 Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position
H04N 9/26 Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using electron-optical colour selection means, e.g. line grid, deflection means in or near the gun or near the phosphor screen
H04N 9/27 Picture reproducers using cathode ray tubes with variable depth of penetration of electron beam into the luminescent layer, e.g. penetrons
H04N 9/28 Arrangements for convergence or focusing
H04N 9/29 Picture reproducers using cathode ray tubes using demagnetisation or compensation of external magnetic fields
H04N 9/30 Picture reproducers using solid-state colour display devices
H04N 9/31 Projection devices for colour picture display
H04N 9/43 Conversion of monochrome picture signals to colour picture signals for colour picture display
H04N 9/44 Colour synchronisation
H04N 9/45 Generation or recovery of colour sub-carriers
H04N 9/47 Colour synchronisation for sequential signals
H04N 9/64 Circuits for processing colour signals
H04N 9/65 Circuits for processing colour signals for synchronous modulators
H04N 9/66 Circuits for processing colour signals for synchronous demodulators
H04N 9/67 Circuits for processing colour signals for matrixing
H04N 9/68 Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
H04N 9/69 Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
H04N 9/70 Circuits for processing colour signals for colour killing
H04N 9/71 Circuits for processing colour signals for colour killing combined with colour gain control
H04N 9/72 Circuits for processing colour signals for reinsertion of dc and slowly varying components of colour signals
H04N 9/73 Circuits for processing colour signals colour balance circuits, e.g. white balance circuits, colour temperature control
H04N 9/74 Circuits for processing colour signals for obtaining special effects
H04N 9/75 Chroma key
H04N 9/76 Circuits for processing colour signals for obtaining special effects for mixing of colour signals
H04N 9/077 Picture signal generators with one pick-up device only whereby the colour signals are characterised by their phase
H04N 9/78 Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
H04N 9/79 Processing of colour television signals in connection with recording
H04N 9/80 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
H04N 9/81 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded sequentially only
H04N 9/82 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
H04N 9/083 Picture signal generators with one pick-up device only whereby the colour signals are characterised by their frequency
H04N 9/84 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency
H04N 9/85 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded brightness signal occupying a frequency band totally overlapping the frequency band of the recorded chrominance signal, e.g. frequency interleaving
H04N 9/86 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded sequentially and simultaneously, e.g. corresponding to SECAM-system
H04N 9/87 Regeneration of colour television signals
H04N 9/88 Signal drop-out compensation
H04N 9/89 Time-base error compensation
H04N 9/093 Systems for avoiding or correcting misregistration of video signals
H04N 9/097 Optical arrangements associated therewith, e.g. for beam-splitting, for colour correction
H04N 9/285 Arrangements for convergence or focusing using quadrupole lenses
H04N 9/455 Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals
H04N 9/465 Synchronisation of the PAL-switch
H04N 9/475 Colour synchronisation for mutually locking different synchronisation sources
H04N 9/793 Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
H04N 9/797 Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal
H04N 9/802 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving processing of the sound signal
H04N 9/804 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
H04N 9/806 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal
H04N 9/808 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the composite colour video-signal
H04N 9/815 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded sequentially only the luminance signal and the sequential colour component signals being recorded in separate recording channels
H04N 9/825 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the luminance and chrominance signals being recorded in separate channels
H04N 9/835 Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal involving processing of the sound signal
H04N 9/873 Regeneration of colour television signals for restoring the colour component sequence of the reproduced signal
H04N 9/877 Regeneration of colour television signals by assembling picture element blocks in an intermediate memory
H04N 9/882 Signal drop-out compensation the signal being a composite colour television signal
H04N 9/885 Signal drop-out compensation the signal being a composite colour television signal using a digital intermediate memory
H04N 9/888 Signal drop-out compensation for signals recorded by pulse code modulation
H04N 9/893 Time-base error compensation using an analogue memory, e.g. a CCD-shift register, the delay of which is controlled by a voltage controlled oscillator
H04N 9/896 Time-base error compensation using a digital memory with independent write-in and read-out clock generators
H04N 9/898 Regeneration of colour television signals using frequency multiplication of the reproduced colour signal with another auxiliary reproduced signal, e.g. a pilot signal carrier
H04N 11/00 Colour television systems
H04N 11/02 Colour television systems with bandwidth reduction
H04N 11/04 Colour television systems using pulse code modulation
H04N 11/06 Transmission systems characterised by the manner in which the individual colour picture signal components are combined
H04N 11/08 Transmission systems characterised by the manner in which the individual colour picture signal components are combined using sequential signals only
H04N 11/10 Transmission systems characterised by the manner in which the individual colour picture signal components are combined using sequential signals only in which colour signals are inserted in the blanking interval of brightness signal
H04N 11/12 Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
H04N 11/14 Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
H04N 11/16 Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
H04N 11/18 Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous and sequential signals, e.g. SECAM-system
H04N 11/20 Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards
H04N 11/22 Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards in which simultaneous signals are converted into sequential signals or vice versa
H04N 11/24 High-definition television systems
H04N 13/00 PICTORIAL COMMUNICATION, e.g. TELEVISION - Details thereof
H04N 13/02 Picture signal generators
H04N 13/04 Picture reproducers
H04N 13/10 Processing, recording or transmission of stereoscopic or multi-view image signals
H04N 13/15 Processing image signals for colour aspects of image signals
H04N 13/20 Image signal generators
H04N 13/25 Image signal generators using stereoscopic image cameras using image signals from one sensor to control the characteristics of another sensor
H04N 13/30 Image reproducers
H04N 13/31 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
H04N 13/32 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using moving apertures or moving light sources
H04N 13/38 Image reproducers using viewer tracking for tracking vertical translational head movements
H04N 13/39 Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume the picture elements emitting light at places where a pair of light beams intersect in a transparent material
H04N 13/106 Processing image signals
H04N 13/111 Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation
H04N 13/117 Transformation of image signals corresponding to virtual viewpoints, e.g. spatial image interpolation the virtual viewpoint locations being selected by the viewers or determined by viewer tracking
H04N 13/122 Improving the 3D impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues
H04N 13/125 Improving the 3D impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues for crosstalk reduction
H04N 13/128 Adjusting depth or disparity
H04N 13/133 Equalising the characteristics of different image components, e.g. their average brightness or colour balance
H04N 13/139 Format conversion, e.g. of frame-rate or size
H04N 13/144 Processing image signals for flicker reduction
H04N 13/156 Mixing image signals
H04N 13/161 Encoding, multiplexing or demultiplexing different image signal components
H04N 13/167 Synchronising or controlling image signals
H04N 13/172 Processing image signals image signals comprising non-image signal components, e.g. headers or format information
H04N 13/178 Metadata, e.g. disparity information
H04N 13/183 On-screen display [OSD] information, e.g. subtitles or menus
H04N 13/189 Recording image signals; Reproducing recorded image signals
H04N 13/194 Transmission of image signals
H04N 13/204 Image signal generators using stereoscopic image cameras
H04N 13/207 Image signal generators using stereoscopic image cameras using a single 2D image sensor
H04N 13/211 Image signal generators using stereoscopic image cameras using a single 2D image sensor using temporal multiplexing
H04N 13/214 Image signal generators using stereoscopic image cameras using a single 2D image sensor using spectral multiplexing
H04N 13/218 Image signal generators using stereoscopic image cameras using a single 2D image sensor using spatial multiplexing
H04N 13/221 Image signal generators using stereoscopic image cameras using a single 2D image sensor using the relative movement between cameras and objects
H04N 13/225 Image signal generators using stereoscopic image cameras using a single 2D image sensor using parallax barriers
H04N 13/229 Image signal generators using stereoscopic image cameras using a single 2D image sensor using lenticular lenses, e.g. arrangements of cylindrical lenses
H04N 13/232 Image signal generators using stereoscopic image cameras using a single 2D image sensor using fly-eye lenses, e.g. arrangements of circular lenses
H04N 13/236 Image signal generators using stereoscopic image cameras using a single 2D image sensor using varifocal lenses or mirrors
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
H04N 13/243 Image signal generators using stereoscopic image cameras using three or more 2D image sensors
H04N 13/246 Calibration of cameras
H04N 13/254 Image signal generators using stereoscopic image cameras in combination with electromagnetic radiation sources for illuminating objects
H04N 13/257 Colour aspects
H04N 13/261 Image signal generators with monoscopic-to-stereoscopic image conversion
H04N 13/264 Image signal generators with monoscopic-to-stereoscopic image conversion using the relative movement of objects in two video frames or fields
H04N 13/268 Image signal generators with monoscopic-to-stereoscopic image conversion based on depth image-based rendering [DIBR]
H04N 13/271 Image signal generators wherein the generated image signals comprise depth maps or disparity maps
H04N 13/275 Image signal generators from 3D object models, e.g. computer-generated stereoscopic image signals
H04N 13/279 Image signal generators from 3D object models, e.g. computer-generated stereoscopic image signals the virtual viewpoint locations being selected by the viewers or determined by tracking
H04N 13/282 Image signal generators for generating image signals corresponding to three or more geometrical viewpoints, e.g. multi-view systems
H04N 13/286 Image signal generators having separate monoscopic and stereoscopic modes
H04N 13/289 Switching between monoscopic and stereoscopic modes
H04N 13/293 Generating mixed stereoscopic images; Generating mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
H04N 13/296 Synchronisation thereof; Control thereof
H04N 13/302 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
H04N 13/305 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
H04N 13/307 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using fly-eye lenses, e.g. arrangements of circular lenses
H04N 13/312 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers the parallax barriers being placed behind the display panel, e.g. between backlight and spatial light modulator [SLM]
H04N 13/315 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers the parallax barriers being time-variant
H04N 13/317 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using slanted parallax optics
H04N 13/322 Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using varifocal lenses or mirrors
H04N 13/324 Colour aspects
H04N 13/327 Calibration thereof
H04N 13/332 Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
H04N 13/334 Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using spectral multiplexing
H04N 13/337 Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
H04N 13/339 Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using spatial multiplexing
H04N 13/341 Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
H04N 13/344 Displays for viewing with the aid of special glasses or head-mounted displays [HMD] with head-mounted left-right displays
H04N 13/346 Image reproducers using prisms or semi-transparent mirrors
H04N 13/349 Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking
H04N 13/351 Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for displaying simultaneously
H04N 13/354 Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking for displaying sequentially
H04N 13/356 Image reproducers having separate monoscopic and stereoscopic modes
H04N 13/359 Switching between monoscopic and stereoscopic modes
H04N 13/361 Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
H04N 13/363 Image reproducers using image projection screens
H04N 13/365 Image reproducers using digital micromirror devices [DMD]
H04N 13/366 Image reproducers using viewer tracking
H04N 13/368 Image reproducers using viewer tracking for two or more viewers
H04N 13/371 Image reproducers using viewer tracking for tracking rotational head movements around the vertical axis
H04N 13/373 Image reproducers using viewer tracking for tracking forward-backward translational head movements, i.e. longitudinal movements
H04N 13/376 Image reproducers using viewer tracking for tracking left-right translational head movements, i.e. lateral movements
H04N 13/378 Image reproducers using viewer tracking for tracking rotational head movements around an axis perpendicular to the screen
H04N 13/383 Image reproducers using viewer tracking for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes
H04N 13/385 Image reproducers alternating rapidly the location of the left-right image components on the display screens
H04N 13/388 Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
H04N 13/393 Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume the volume being generated by a moving, e.g. vibrating or rotating, surface
H04N 13/395 Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes
H04N 13/398 Synchronisation thereof; Control thereof
H04N 15/00 Stereoscopic colour television systems; Details thereof
H04N 17/00 Diagnosis, testing or measuring for television systems or their details
H04N 17/02 Diagnosis, testing or measuring for television systems or their details for colour television signals
H04N 17/04 Diagnosis, testing or measuring for television systems or their details for receivers
H04N 17/06 Diagnosis, testing or measuring for television systems or their details for recorders
H04N 19/00 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
H04N 19/10 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
H04N 19/11 Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
H04N 19/12 Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
H04N 19/13 Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
H04N 19/14 Coding unit complexity, e.g. amount of activity or edge presence estimation
H04N 19/15 Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
H04N 19/16 Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter for a given display mode, e.g. for interlaced or progressive display mode
H04N 19/17 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
H04N 19/18 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
H04N 19/19 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding using optimisation based on Lagrange multipliers
H04N 19/20 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
H04N 19/21 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with binary alpha-plane coding for video objects, e.g. context-based arithmetic encoding [CAE]
H04N 19/23 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with coding of regions that are present throughout a whole video segment, e.g. sprites, background or mosaic
H04N 19/25 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with scene description coding, e.g. binary format for scenes [BIFS] compression
H04N 19/27 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding involving both synthetic and natural picture components, e.g. synthetic natural hybrid coding [SNHC]
H04N 19/29 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding involving scalability at the object level, e.g. video object layer [VOL]
H04N 19/30 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
H04N 19/31 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the temporal domain
H04N 19/33 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the spatial domain
H04N 19/34 Scalability techniques involving progressive bit-plane based encoding of the enhancement layer, e.g. fine granular scalability [FGS]
H04N 19/36 Scalability techniques involving formatting the layers as a function of picture distortion after decoding, e.g. signal-to-noise [SNR] scalability
H04N 19/37 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability with arrangements for assigning different transmission priorities to video input data or to video coded data
H04N 19/39 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability involving multiple description coding [MDC], i.e. with separate layers being structured as independently decodable descriptions of input picture data
H04N 19/40 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
H04N 19/42 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
H04N 19/43 Hardware specially adapted for motion estimation or compensation
H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04N 19/46 Embedding additional information in the video signal during the compression process
H04N 19/48 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
H04N 19/50 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
H04N 19/51 Motion estimation or motion compensation
H04N 19/52 Processing of motion vectors by encoding by predictive encoding
H04N 19/53 Multi-resolution motion estimation; Hierarchical motion estimation
H04N 19/54 Motion estimation other than block-based using feature points or meshes
H04N 19/55 Motion estimation with spatial constraints, e.g. at image or region borders
H04N 19/56 Motion estimation with initialisation of the vector search, e.g. estimating a good candidate to initiate a search
H04N 19/57 Motion estimation characterised by a search window with variable size or shape
H04N 19/58 Motion compensation with long-term prediction, i.e. the reference frame for a current frame not being the temporally closest one
H04N 19/59 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
H04N 19/60 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
H04N 19/61 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
H04N 19/62 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding by frequency transforming in three dimensions
H04N 19/63 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
H04N 19/64 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission
H04N 19/65 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience
H04N 19/66 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience involving data partitioning, i.e. separation of data into packets or partitions according to importance
H04N 19/67 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience involving unequal error protection [UEP], i.e. providing protection according to the importance of the data
H04N 19/68 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience involving the insertion of resynchronisation markers into the bitstream
H04N 19/69 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience involving reversible variable length codes [RVLC]
H04N 19/70 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
H04N 19/80 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
H04N 19/82 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
H04N 19/85 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
H04N 19/86 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
H04N 19/87 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving scene cut or scene change detection in combination with video compression
H04N 19/88 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving rearrangement of data among different coding units, e.g. shuffling, interleaving, scrambling or permutation of pixel data or permutation of transform coefficient data among different blocks
H04N 19/89 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
H04N 19/90 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups , e.g. fractals
H04N 19/91 Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
H04N 19/93 Run-length coding
H04N 19/94 Vector quantisation
H04N 19/96 Tree coding, e.g. quad-tree coding
H04N 19/97 Matching pursuit coding
H04N 19/98 Adaptive-dynamic-range coding [ADRC]
H04N 19/102 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
H04N 19/103 Selection of coding mode or of prediction mode
H04N 19/105 Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
H04N 19/107 Selection of coding mode or of prediction mode between spatial and temporal predictive coding, e.g. picture refresh
H04N 19/109 Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
H04N 19/112 Selection of coding mode or of prediction mode according to a given display mode, e.g. for interlaced or progressive display mode
H04N 19/114 Adapting the group of pictures [GOP] structure, e.g. number of B-frames between two anchor frames
H04N 19/115 Selection of the code volume for a coding unit prior to coding
H04N 19/117 Filters, e.g. for pre-processing or post-processing
H04N 19/119 Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
H04N 19/122 Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
H04N 19/124 Quantisation
H04N 19/126 Quantisation - Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
H04N 19/127 Prioritisation of hardware or computational resources
H04N 19/129 Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
H04N 19/132 Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
H04N 19/134 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
H04N 19/136 Incoming video signal characteristics or properties
H04N 19/137 Motion inside a coding unit, e.g. average field, frame or block difference
H04N 19/139 Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
H04N 19/142 Detection of scene cut or scene change
H04N 19/146 Data rate or code amount at the encoder output
H04N 19/147 Data rate or code amount at the encoder output according to rate distortion criteria
H04N 19/149 Data rate or code amount at the encoder output by estimating the code amount by means of a model, e.g. mathematical model or statistical model
H04N 19/152 Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
H04N 19/154 Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
H04N 19/156 Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
H04N 19/157 Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
H04N 19/159 Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
H04N 19/162 User input
H04N 19/164 Feedback from the receiver or from the transmission channel
H04N 19/166 Feedback from the receiver or from the transmission channel concerning the amount of transmission errors, e.g. bit error rate [BER]
H04N 19/167 Position within a video image, e.g. region of interest [ROI]
H04N 19/169 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
H04N 19/172 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
H04N 19/174 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks
H04N 19/176 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
H04N 19/177 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a group of pictures [GOP]
H04N 19/179 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a scene or a shot
H04N 19/182 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a pixel
H04N 19/184 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
H04N 19/186 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
H04N 19/187 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a scalable video layer
H04N 19/189 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
H04N 19/192 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive
H04N 19/194 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive involving only two passes
H04N 19/196 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
H04N 19/423 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
H04N 19/426 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements using memory downsizing methods
H04N 19/433 Hardware specially adapted for motion estimation or compensation characterised by techniques for memory access
H04N 19/436 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals - characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
H04N 19/463 Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission
H04N 19/467 Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
H04N 19/503 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
H04N 19/507 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction using conditional replenishment
H04N 19/513 Processing of motion vectors
H04N 19/517 Processing of motion vectors by encoding
H04N 19/523 Motion estimation or motion compensation with sub-pixel accuracy
H04N 19/527 Global motion vector estimation
H04N 19/533 Motion estimation using multistep search, e.g. 2D-log search or one-at-a-time search [OTS]
H04N 19/537 Motion estimation other than block-based
H04N 19/543 Motion estimation other than block-based using regions
H04N 19/547 Motion estimation performed in a transform domain
H04N 19/553 Motion estimation dealing with occlusions
H04N 19/557 Motion estimation characterised by stopping computation or iteration based on certain criteria, e.g. error magnitude being too large or early exit
H04N 19/563 Motion estimation with padding, i.e. with filling of non-object values in an arbitrarily shaped picture block or region for estimation purposes
H04N 19/567 Motion estimation based on rate distortion criteria
H04N 19/573 Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction
H04N 19/577 Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
H04N 19/583 Motion compensation with overlapping blocks
H04N 19/587 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence
H04N 19/593 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
H04N 19/597 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
H04N 19/615 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding using motion compensated temporal filtering [MCTF]
H04N 19/625 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
H04N 19/635 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets - characterised by filter definition or implementation details
H04N 19/645 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission by grouping of coefficients into blocks after the transform
H04N 19/895 Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder in combination with error concealment
H04N 21/00 Selective content distribution, e.g. interactive television or video on demand [VOD]
H04N 21/20 Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
H04N 21/21 Server components or server architectures
H04N 21/23 Processing of content or additional data; Elementary server operations; Server middleware
H04N 21/24 Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth or upstream requests
H04N 21/25 Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication or learning user preferences for recommending movies
H04N 21/27 Server based end-user applications
H04N 21/40 Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB [set-top-box]; Operations thereof
H04N 21/41 Structure of client; Structure of client peripherals
H04N 21/43 Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronizing decoder's clock; Client middleware
H04N 21/44 Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs
H04N 21/45 Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies 
H04N 21/47 End-user applications
H04N 21/60 Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client; Communication details between server and client
H04N 21/61 Network physical structure; Signal processing
H04N 21/63 Control signaling between client, server and network components; Network processes for video distribution between server and clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
H04N 21/64 Addressing
H04N 21/65 Transmission of management data between client and server
H04N 21/80 Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
H04N 21/81 Monomedia components thereof
H04N 21/83 Generation or processing of protective or descriptive data associated with content; Content structuring
H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors
H04N 21/85 Assembly of content; Generation of multimedia applications
H04N 21/214 Specialised server platform, e.g. server located in an airplane, hotel or hospital
H04N 21/218 Source of audio or video content, e.g. local disk arrays
H04N 21/222 Secondary servers, e.g. proxy server or cable television Head-end
H04N 21/226 Internal components of the server
H04N 21/231 Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers or prioritizing data for deletion
H04N 21/232 Content retrieval operation within server, e.g. reading video streams from disk arrays
H04N 21/233 Processing of audio elementary streams
H04N 21/234 Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs
H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
H04N 21/236 Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator ] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
H04N 21/237 Communication with additional data server
H04N 21/238 Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
H04N 21/239 Interfacing the upstream path of the transmission network, e.g. prioritizing client requests
H04N 21/241 Operating system [OS] processes, e.g. server setup
H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References]
H04N 21/254 Management at additional data server, e.g. shopping server or rights management server
H04N 21/258 Client or end-user data management, e.g. managing client capabilities, user preferences or demographics or processing of multiple end-users preferences to derive collaborative data
H04N 21/262 Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission or generating play-lists
H04N 21/266 Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system or merging a VOD unicast channel into a multicast channel
H04N 21/274 Storing end-user specific content or additional data in response to end-user request
H04N 21/278 Content descriptor database or directory service for end-user access
H04N 21/414 Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
H04N 21/418 External card to be used in combination with the client device, e.g. for conditional access
H04N 21/422 Input-only peripherals, e.g. global positioning system [GPS]
H04N 21/426 Internal components of the client
H04N 21/431 Generation of visual interfaces; Content or additional data rendering
H04N 21/432 Content retrieval operation from a local storage medium, e.g. hard-disk
H04N 21/433 Content storage operation, e.g. storage operation in response to a pause request or caching operations
H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams or extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
H04N 21/435 Processing of additional data, e.g. decrypting of additional data or reconstructing software from modules extracted from the transport stream
H04N 21/436 Interfacing a local distribution network, e.g. communicating with another STB or inside the home
H04N 21/437 Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
H04N 21/438 Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
H04N 21/439 Processing of audio elementary streams
H04N 21/441 Acquiring end-user identification
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 21/443 OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
H04N 21/454 Content filtering, e.g. blocking advertisements
H04N 21/458 Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules
H04N 21/462 Content or additional data management e.g. creating a master electronic program guide from data received from the Internet and a Head-end or controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabi
H04N 21/466 Learning process for intelligent management, e.g. learning user preferences for recommending movies
H04N 21/472 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification or for manipulating displayed content
H04N 21/475 End-user interface for inputting end-user data, e.g. PIN [Personal Identification Number] or preference data
H04N 21/478 Supplemental services, e.g. displaying phone caller identification or shopping application
H04N 21/482 End-user interface for program selection
H04N 21/485 End-user interface for client configuration
H04N 21/488 Data services, e.g. news ticker
H04N 21/633 Control signals issued by server directed to the network components or client
H04N 21/637 Control signals issued by the client directed to the server or network components
H04N 21/643 Communication protocols
H04N 21/647 Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load or bridging bet
H04N 21/654 Transmission by server directed to the client
H04N 21/658 Transmission by the client directed to the server
H04N 21/835 Generation of protective data, e.g. certificates
H04N 21/845 Structuring of content, e.g. decomposing content into time segments
H04N 21/854 Content authoring
H04N 21/858 Linking data to content, e.g. by linking an URL to a video object or by creating a hotspot
H04N 21/2183 Cache memory
H04N 21/2187 Live feed
H04N 21/2225 Local VOD servers
H04N 21/2312 Data placement on disk arrays
H04N 21/2315 Data placement on disk arrays using interleaving
H04N 21/2318 Data placement on disk arrays using striping
H04N 21/2343 Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
H04N 21/2347 Processing of video elementary streams, e.g. splicing of video streams or manipulating MPEG-4 scene graphs involving video stream encryption
H04N 21/2362 Generation or processing of SI [Service Information]
H04N 21/2365 Multiplexing of several video streams
H04N 21/2368 Multiplexing of audio and video streams
H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an IP [Internet Protocol] network
H04N 21/2383 Channel coding of digital bit-stream, e.g. modulation
H04N 21/2385 Channel allocation; Bandwidth allocation
H04N 21/2387 Stream processing in response to a playback request from an end-user, e.g. for trick-play
H04N 21/2389 Multiplex stream processing, e.g. multiplex stream encrypting
H04N 21/2543 Billing
H04N 21/2547 Third party billing, e.g. billing of advertiser
H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
H04N 21/2665 Gathering content from different sources, e.g. Internet and satellite
H04N 21/2668 Creating a channel for a dedicated end-user group, e.g. by inserting targeted commercials into a video stream based on end-user profiles
H04N 21/2743 Video hosting of uploaded data from client
H04N 21/2747 Remote storage of video programs received via the downstream path, e.g. from the server
H04N 21/4143 PC [Personal Computer]
H04N 21/4147 PVR [Personal Video Recorder]
H04N 21/4185 External card to be used in combination with the client device, e.g. for conditional access for payment
H04N 21/4223 Cameras
H04N 21/4227 Remote input by a user located remotely from the client device, e.g. at work
H04N 21/4335 Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions
H04N 21/4363 Adapting the video stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
H04N 21/4385 Multiplex stream processing, e.g. multiplex stream decrypting
H04N 21/4402 Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
H04N 21/4405 Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs involving video stream decryption
H04N 21/4408 Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to MPEG-4 scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
H04N 21/4415 Acquiring end-user identification using biometric characteristics of the user, e.g. by voice recognition or fingerprint scanning
H04N 21/4425 Monitoring of client processing errors or hardware failure
H04N 21/4545 Input to filtering algorithms, e.g. filtering a region of the image
H04N 21/4623 Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
H04N 21/4627 Rights management
H04N 21/4722 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification or for manipulating displayed content for requesting additional data associated with the content
H04N 21/4725 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification or for manipulating displayed content for requesting additional data associated with the content using interactive regions of the image, e.g. hot spots
H04N 21/4728 End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification or for manipulating displayed content for selecting a ROI [Region Of Interest], e.g. for requesting a higher resolution version of a selected region
H04N 21/4782 Web browsing
H04N 21/4784 Supplemental services, e.g. displaying phone caller identification or shopping application receiving rewards
H04N 21/4786 Supplemental services, e.g. displaying phone caller identification or shopping application e-mailing
H04N 21/4788 Supplemental services, e.g. displaying phone caller identification or shopping application communicating with other users, e.g. chatting
H04N 21/6332 Control signals issued by server directed to the network components or client directed to client
H04N 21/6334 Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
H04N 21/6336 Control signals issued by server directed to the network components or client directed to client directed to decoder
H04N 21/6338 Control signals issued by server directed to the network components or client directed to network
H04N 21/6371 Control signals issued by the client directed to the server or network components directed to network
H04N 21/6373 Control signals issued by the client directed to the server or network components for rate control
H04N 21/6375 Control signals issued by the client directed to the server or network components for requesting retransmission
H04N 21/6377 Control signals issued by the client directed to the server or network components directed to server
H04N 21/6379 Control signals issued by the client directed to the server or network components directed to server directed to encoder
H04N 21/6402 Address allocation for clients
H04N 21/6405 Multicasting
H04N 21/6408 Unicasting
H04N 21/6433 DSM-CC [Digital Storage Media - Command and Control Protocol]
H04N 21/6437 RTP [Real-time Transport Protocol]
H04N 21/6543 Transmission by server directed to the client for forcing some client operations, e.g. recording
H04N 21/6547 Transmission by server directed to the client comprising parameters, e.g. for client setup
H04N 21/6583 Acknowledgement
H04N 21/6587 Control parameters, e.g. trick play commands or viewpoint selection
H04N 21/8352 Generation of protective data, e.g. certificates involving content or source identification data, e.g. UMID [Unique Material Identifier]
H04N 21/8355 Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
H04N 21/8358 Generation of protective data, e.g. certificates involving watermark
H04N 21/8405 Generation or processing of descriptive data, e.g. content descriptors represented by keywords
H04N 21/8541 Content authoring involving branching, e.g. to different story endings
H04N 21/8543 Content authoring using a description language, e.g. MHEG [Multimedia and Hypermedia information coding Expert Group] or XML [eXtensible Markup Language]
H04N 21/8545 Content authoring for generating interactive applications
H04N 21/8547 Content authoring involving timestamps for synchronizing content
H04N 21/8549 Creating video summaries, e.g. movie trailer
H04N 101/00 Still video cameras