Patents
Sitemap › H04 - Electric communication technique › H04N - Pictorial communication, e.g. television › H04N 7 - Television systems
Patents for H04N 7 - Television systems (274,023)
11/1984
11/06/1984US4481536 Teletext system for displaying data on the screen of a television receiver
11/06/1984CA1177558A1 Cable network data transmission system
10/1984
10/31/1984EP0123616A1 Interframe coding method and apparatus therefor
10/31/1984EP0123573A1 Method for the adaptive coding and decoding of a television picture, and device for carrying out such a method
10/31/1984EP0123505A1 Scrambling system for television video signal
10/31/1984EP0123456A2 A combined intraframe and interframe transform coding method
10/31/1984EP0123422A2 Apparatus for scrambling and unscrambling signals
10/31/1984EP0123174A1 Television system
10/30/1984US4480267 Line standard conversion circuit
10/30/1984CA1177175A1 Digital filter circuits
10/30/1984CA1177154A1 Color information display apparatus
10/30/1984CA1177139A1 Antenna system transmission apparatus
10/30/1984CA1177138A1 Digital signal receiver
10/25/1984WO1984004195A1 Audio digital recording and playback system
10/24/1984EP0122626A2 Apparatus for the time or event controlled recording of television signals
10/24/1984EP0122543A2 Method of image processing
10/23/1984US4479195 Data conference system
10/23/1984US4479142 Interface apparatus and method for asynchronous encoding of digital television
10/17/1984EP0121967A1 Television transmissions
10/17/1984EP0121757A1 A method for processing useful signals in a four-wire videointerphone and relative circuitry
10/16/1984US4477915 Differential pulse code modulation transmission system
10/11/1984WO1984004013A1 Encryption of television signals
10/10/1984EP0121411A2 Stereoscopic vision system
10/10/1984EP0121098A2 Method for reducing line width varations in bilevel video images
10/09/1984US4476493 Television scanning of motion picture films of different frame aspect ratios
10/09/1984US4476484 Technique for providing compatibility between high-definition and conventional color television
10/03/1984EP0120806A2 Channel selector circuit for digital bitwise interleaved broadband channels
10/03/1984EP0120742A1 Cable network for video communication
10/03/1984EP0120731A1 Teletext receiver using decision means for anticipated acquisition
10/03/1984EP0120685A2 Method of and apparatus for decoding scrambled video signals
10/03/1984EP0120679A2 Apparatus for encoding and decoding video signals
10/03/1984EP0120615A1 Apparatus for, and method of, recording scrambled or coded television signals
10/03/1984EP0120390A2 Television signal transmission system
10/03/1984EP0120344A2 System for transmitting, recording and/or reproducing a television signal
10/02/1984US4475244 Time-period modulation transmission system
10/02/1984US4475242 Microwave communications system
10/02/1984US4475187 Broad band exchange system to minimize crosstalk using threshold value multiplex circuits
10/02/1984US4475123 Addressable subscriber cable television system
10/02/1984US4475121 Terminal unit checking system
10/02/1984CA1175557A1 Predictive coding system for television signals
10/02/1984CA1175554A1 Catv converter with keylock to favorite channels
10/02/1984CA1175553A1 Coding and decoding system for video and audio signals
09/1984
09/27/1984WO1984003811A1 Compatible descrambler for television synchronization
09/26/1984EP0119945A1 Television picture scrambling and unscrambling method and apparatus
09/26/1984EP0119911A1 Method of ultrasonic imaging using a linear array of transducer elements
09/26/1984EP0119751A1 Scrambling system of television signal
09/26/1984EP0119697A1 Superimposition in a video display system
09/26/1984EP0119588A2 Integrated communication system and method of establishing videotelephone links in the same
09/26/1984EP0119397A2 Conversion arrangement for phase-coupled carrier frequency-transmission systems
09/25/1984US4473841 Video signal transmission system for endoscope using solid state image sensor
09/25/1984US4473837 System for encoding and decoding video signals
09/19/1984EP0119081A2 Apparatus for viewing scrambled or unscrambled TV signals
09/19/1984EP0119005A1 Time-period modulation transmission system
09/19/1984EP0118960A2 Circuitry for the conversion of an analogous picture-signal to an amplitude-discreet output
09/19/1984EP0118950A1 Teletext device with reduced page-access time
09/19/1984EP0118755A2 Method of digitally transmitting television pictures
09/19/1984EP0118754A2 Method and cicuit for digitally transmitting television pictures
09/19/1984EP0118510A1 Data conference system
09/19/1984EP0078843A4 Information distribution system.
09/18/1984US4472830 Television receiver for demodulating a two-language stereo broadcast signal
09/18/1984US4472826 X-Ray examination apparatus
09/18/1984US4472803 Digital transmitting system
09/18/1984US4472747 Audio digital recording and playback system
09/18/1984CA1174765A1 Method and apparatus for shuffling a block of data
09/13/1984WO1984003599A1 Dynamic noise reduction for video
09/12/1984EP0118161A1 Switching system
09/12/1984EP0118104A2 Receiver device of entertainment electronics with a memory for the desired programme
09/11/1984US4471381 System for converting number of scanning lines
09/11/1984US4471380 Scrambling and descrambling of television signals for subscription TV
09/11/1984US4471379 Codified field polarity television system
09/11/1984US4471377 Color information display apparatus
09/11/1984US4471349 Phantom raster generating apparatus scanning TV image memory in angular and orthogonal coordinates
09/11/1984EP0108143A4 Method and system for remote reporting, particularly for pay television billing.
09/11/1984CA1174387A1 Legibility for alpha-mosaic characters
09/05/1984EP0117719A2 Method of decoding an encoded video signal and a receiving apparatus for decoding the signal
09/05/1984EP0117426A1 Arrangement for deriving video clock frequencies from one of the PCM clock frequencies occurring in the PCM hierarchy
09/04/1984US4470142 Data processing
09/04/1984US4470065 Adaptive error concealment using horizontal information determination from adjacent lines
09/04/1984CA1173966A1 Scan converter system
09/04/1984CA1173955A1 Television receiver including a circuit for doubling line scanning frequency
09/04/1984CA1173952A1 Television system using a marking code superimposed on the picture
09/04/1984CA1173949A1 Differential current detector in cable television trunk amplifier station
08/1984
08/30/1984WO1984002989A3 Resolution enhancement and zoom by degradation estimates
08/29/1984EP0117161A1 Method and device for the digital coding of a picture, in particular a television picture
08/29/1984EP0116627A1 Recorded program communication system
08/29/1984EP0116574A1 Transmission and/or reception of television pictures.
08/28/1984US4468708 Combined data rate reduction system
08/28/1984US4468704 Adaptive thresholder
08/28/1984US4468698 Line-locked digital fluorography system
08/28/1984US4468697 Device for and method of X-ray image processing
08/28/1984CA1173563A1 Triangle and pyramid signal transforms and apparatus
08/28/1984CA1173556A1 Master antenna subscription television system and the like
08/28/1984CA1173551A1 Real time digital scan converter
08/22/1984EP0116402A2 Scrambling systems for audio frequency signals
08/22/1984EP0116296A1 Method and device for signalling between picture phone sets at an existing telephone link
08/22/1984EP0116082A1 Secure coding and decoding system and method for television program signals.
08/21/1984US4467412 Slave processor with clock controlled by internal ROM & master processor
08/21/1984US4467357 System for digitizing and processing video signals and a television signal receiver comprising such a system
08/21/1984US4467356 Transmitting two television signals through one channel
08/21/1984US4467355 Freeze-picture transmission apparatus
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