Patents for H04N 7 - Television systems (274,023)
01/1988
01/26/1988CA1232057A1 Colour television transmission or data storage system
01/21/1988DE3726065A1 BOX-TYPE MOTOR VEHICLE having an evaluation device in the driver's cab, which evaluation device allows an operator to assess an object by means of screens and sound transducers, the signals from a video camera being used especially for assessment of the recording angle
01/20/1988EP0253623A2 Multiplex signal processing apparatus
01/20/1988EP0253608A2 Video scanning systems
01/20/1988EP0253110A2 Micrprocessor controlled videotext decoder
01/19/1988US4720749 Electronic print board
01/19/1988US4720744 Television system
01/19/1988US4720743 Predictine coding/decoding system for block-formed picture signals
01/19/1988CA1231782A1 System, method, and station interface arrangement for playing video games over telephone networks
01/14/1988WO1988000422A1 Motion detection apparatus employing information contained in the frequency spectrum of a television signal
01/14/1988DE3623029A1 Subscriber set for video telephony
01/13/1988EP0252563A2 System for transmitting and receiving a television signal, and also a transmitting section and a receiving section for said system
01/13/1988EP0252215A2 Process for simultaneous representation of at least two successive events in TV and arrangement for the realization of the process
01/13/1988EP0137830B1 Dynamic noise reduction for video
01/12/1988US4719621 Packet fastbus
01/12/1988US4719584 Dual mode video tracker
01/12/1988US4719510 Teletext decoders
01/12/1988US4719504 Method for converting an analog picture signal into an amplitude-discrete output signal
01/12/1988US4719451 In a video digital imaging system
01/12/1988CA1231435A1 Signal coding for secure transmission
01/12/1988CA1231434A1 Remote control switching of television sources
01/07/1988EP0252058A2 A VCR interface for receiving cable tv signals
01/07/1988EP0251626A2 Transmission system for audio-data signals to accompany transmitted video signals
01/07/1988EP0250661A1 Video transmission system using time-warp scrambling
01/07/1988EP0250632A1 Digital frame frequency and line scan converter for colour television signals
01/07/1988EP0250533A1 Method of coding a video signal for transmission in a restricted bandwidth.
01/07/1988EP0250532A1 Method of transmitting a video signal in sampled form
01/07/1988DE3721614A1 Television receiver for text transmission
01/07/1988DE3622308A1 Method of receiving periodically repeating teletext data
01/06/1988CN87104065A Improving immunity to channel distortions of mac signal
01/05/1988US4718117 TVRO receiver system with low-cost video-noise reduction filter
01/05/1988US4718107 Parental control for CATV converters
01/05/1988US4718104 Filter-subtract-decimate hierarchical pyramid signal analyzing and synthesizing technique
01/05/1988US4718086 AGC in sound channel of system for processing a scrambled video signal
01/05/1988US4717970 Video system with programmable VCR
01/05/1988US4717962 Method for compressing and reconstructing a data representation of a picture
01/05/1988US4717957 Video compression method
01/05/1988US4717956 Image-sequence compression using a motion-compensation technique
01/05/1988US4717820 Device for detecting movable objects
01/05/1988CA1231171A1 Progressive scan television receiver for non-standard signals
01/05/1988CA1231170A1 Teletext magazine code detector
12/1987
12/29/1987US4716588 Addressable subscription television system having multiple scrambling modes
12/29/1987US4716587 Broadband-signal broadcasting system
12/29/1987US4716585 Gain switched audio conferencing network
12/29/1987US4716457 Electronic endoscopic system
12/29/1987US4716426 Method of and apparatus for photographing medical image
12/29/1987US4716410 CATV data transmission method
12/23/1987EP0250274A1 Method and device for modulating television signals, especially those of the D2-MAC-packet type
12/23/1987EP0250152A2 High speed transform circuit
12/23/1987EP0249607A1 Method and device for compressing digital images by conditional coding without information loss
12/23/1987DE3620424A1 Hybrid coder
12/22/1987US4715059 Conversational video phone
12/22/1987US4714959 Bi-directional amplifier for control and video signals in a closed circuit television system
12/22/1987CA1230668A1 Two-way subscriber television system
12/17/1987WO1987007810A1 Mac format with alternating dc level and clock recovery signals
12/17/1987WO1987007807A1 Signal matching signal substitution
12/17/1987WO1987007795A1 Fast tuning control for a television system
12/16/1987EP0249086A2 Method and apparatus for encoding/transmitting image
12/16/1987CN87104093A Devices for computing monodimentional cosine transforms and image coding device and decoding device ineluding such computation devices
12/15/1987US4713840 Data communication system
12/15/1987US4713698 Write-in electronic display recorder
12/15/1987US4713692 Method and apparatus for deriving frame interval signals
12/15/1987US4713689 Frequency demodulator for television receiver with time multiplexing
12/15/1987US4713686 High speed instantaneous multi-image recorder
12/15/1987US4713685 Video monitoring apparatus
12/15/1987CA1230414A1 Fast profile determination device
12/15/1987CA1230411A1 Multiple access communication on a catv reverse channel
12/10/1987DE3619371A1 Method for multiplexing and demultiplexing plesiochronous digital signals
12/10/1987DE3618660A1 Circuit for generating a duobinary-coded signal for the D2 MAC television transmission system
12/09/1987EP0248729A1 Monodimensional cosine transform calculators and image coding and decoding devices using such calculators
12/09/1987EP0248711A1 Method of transform coding for the transmission of image signals
12/09/1987EP0248441A2 Pay TV scrambling by audio encryption
12/09/1987EP0248063A1 Process or system for programming a video-recorder.
12/09/1987EP0248002A1 Method and apparatus for detecting the most powerfully changed picture areas in a live video signal
12/09/1987CN87101996A Data compression using block list transform
12/08/1987US4712240 Transmission and reception of television broadcast in high-fidelity stereo audio
12/08/1987US4712239 Security arrangement for downloadable cable television converters
12/08/1987US4712238 Selective-subscription descrambling
12/08/1987US4712237 Method and apparatus for unscrambling sync-suppressed television signals
12/08/1987US4712214 Protocol for handling transmission errors over asynchronous communication lines
12/08/1987US4712133 Endoscopic apparatus
12/08/1987US4712131 Sync apparatus for image multiplex transmission system
12/03/1987WO1987007462A1 Telecommunications interface
12/03/1987DE3618339A1 Additional digital colour television transmission via the existing coaxial cable network
12/02/1987EP0247788A2 Picture storage and retrieval system for various limited storage mediums
12/02/1987EP0247703A1 Pseudo-random binary sequence generators
12/02/1987EP0247075A1 Method for hybrid coding by transformation for the transmission of image signals.
12/01/1987US4710971 Channel selecting device for CATV terminal unit
12/01/1987US4710956 Cable television system
12/01/1987US4710955 Cable television system with two-way telephone communication path
12/01/1987US4710917 Video conferencing network
12/01/1987US4710824 System and method for improving chrominance in video disc storage system
12/01/1987US4710813 Low bandwidth video teleconferencing system and method
12/01/1987US4710812 Interframe adaptive vector quantization encoding apparatus and video encoding transmission apparatus
12/01/1987US4710811 Highly efficient coding apparatus for a digital video signal
12/01/1987US4710810 Predictive coding/decoding apparatus for video signal
12/01/1987US4710809 Method for the representation of video images or scenes, in particular aerial images transmitted at reduced frame rate
12/01/1987CA1229931A1 Video terminal with image line disarrangement
12/01/1987CA1229910A1 Quad-edge video signal detector
12/01/1987CA1229909A1 Digital audio scrambling system with error conditioning