H04N 7 - Television systems

Patents for H04N 7 - Television systems (274,023)
02/1977
02/08/1977	US4007326 Electronic copy analysis
02/01/1977	US4006297 Television signal coding system
02/01/1977	US4006296 Method of and apparatus for testing a two dimensional pattern
01/1977
01/25/1977	US4005411 Compression of gray scale imagery to less than one bit per picture element
01/25/1977	US4005265 Videophone system synchronizer
01/25/1977	US4005261 Method and apparatus for producing a composite still picture of a moving object in successive positions
01/18/1977	US4004084 Video conferencing system using spatial reduction and temporal resolution
01/18/1977	US4004082 Method and system for multiplexing signal for transmission
01/11/1977	US4002986 Television receiver with tuner capable of receiving air and CATV signals
01/11/1977	US4002825 System for encoding and decoding amplitude modulated signals
01/04/1977	US4001499 Display systems
12/1976
12/21/1976	US3999006 Visitor confirmation system
12/21/1976	US3999005 Secure transmission of AM or FM signals
12/14/1976	US3997723 Compact unit for optical security system
12/14/1976	US3997718 Premium interactive communication system
12/07/1976	US3996583 System for processing data signals for insertion in television signals
12/07/1976	US3996578 Alarm system
12/07/1976	US3996420 X-ray examination
12/07/1976	US3996418 Scrambler and decoder for secure television system
11/1976
11/23/1976	US3993955 Method of and apparatus for establishing emergency communications in a two-way cable television system
11/23/1976	US3993866 Camera capsule
11/23/1976	US3993861 Digital video modulation and demodulation system
11/16/1976	US3992589 Frequency multiplex system for transmission of telephone and videophone channels
11/09/1976	US3991266 Dual image television
11/02/1976	US3990046 Multiple terminal computer system with mixed terminal data reception rates
11/02/1976	US3990012 Remote transceiver for a multiple site location in a two-way cable television system
11/02/1976	US3989891 Line selection circuit for a television receiver
11/02/1976	US3989887 Swept frequency trap jammer for secure television system
11/02/1976	US3989333 Cable television tap connector box
10/1976
10/26/1976	US3988602 Method and apparatus for enhancing data
10/26/1976	US3988529 Television transmission
10/26/1976	US3988528 Signal transmission system for transmitting a plurality of information signals through a plurality of transmission channels
10/19/1976	US3987398 Remote disconnect-reconnect tap for cable television systems
10/19/1976	US3987397 Remote unit for a two-way cable communications system
10/19/1976	US3987244 Programmable image processor
10/19/1976	US3987243 Image enhancement method and apparatus
10/19/1976	US3987241 Sampled differential analyzer
10/12/1976	US3986051 Signal switching apparatus
10/12/1976	US3986007 Method and apparatus for calibrating mechanical-visual part manipulating system
10/05/1976	US3984833 Apparatus for encoding extended run-length codes
10/05/1976	US3984626 Picture signal coder
10/05/1976	US3984624 Video system for conveying digital and analog information
09/1976
09/28/1976	USRE28984 Article inspection by successively televised images
09/28/1976	US3983486 Modular CATV system
09/21/1976	US3982065 Combined television/data receivers
09/21/1976	US3982064 Data transmission system
09/21/1976	US3982063 Methods and apparatus for reducing the bandwidth of a video signal
09/21/1976	US3982062 Video encription system
09/14/1976	US3980831 Data switching system
09/14/1976	US3980830 Compatible picturephone system
08/1976
08/31/1976	US3978284 Receiver for use in a multi-level code transmission system
08/31/1976	US3978282 Apparatus and method for measuring the transmission characteristics of a network
08/31/1976	US3978281 Infrared imaging system
08/31/1976	US3978280 Image analysis apparatus
08/24/1976	US3976831 Method for transmitting pictures at a picture telephone transmission having limited bandwidth
08/24/1976	US3976826 Method and apparatus for generating line-by-line picture signal from transformed subpicture information
08/17/1976	US3975594 Apparatus utilizing a phantom circuit for connecting additional subscribers to a telecommunication system
08/17/1976	US3975585 Electronic communications system for supplementary video program distribution
08/17/1976	US3975584 Dither threshold generators
08/17/1976	US3975583 Emergency civil defense alarm and communications systems
08/10/1976	US3974386 Differential X-ray method and apparatus
08/10/1976	US3974337 FM television telephone system
08/10/1976	US3974330 Miniature underwater bore hole inspection apparatus
08/10/1976	US3974329 Transmission of video pictures at audio frequencies
08/03/1976	US3973206 Monitoring system for voltage tunable receivers and converters utilizing an analog function generator
07/1976
07/27/1976	US3971888 Synchronization system for variable length encoded signals
07/27/1976	US3971885 Remote control system for passenger conveyors
07/20/1976	US3970776 System for converting the number of lines of a television signal
07/13/1976	US3969581 Vertical synchronizing signal recording apparatus
07/06/1976	US3968327 Television signal distribution system
06/1976
06/29/1976	US3967052 Image transmission method and apparatus
06/15/1976	US3963865 Anti-piracy method and system
06/01/1976	US3961137 Biphase digital television systems
05/1976
05/25/1976	US3959771 Pattern recognition apparatus
05/25/1976	US3959596 Time division switching network
05/18/1976	US3958077 Picture transmission systems
05/04/1976	US3955211 Multiplex transmission of television audio-visual signals
05/04/1976	US3955188 Encoding technique for enabling a device to process different types of digital information transmitted along a single information channel
04/1976
04/27/1976	US3953669 Video tracking system
04/27/1976	US3953668 Method and arrangement for eliminating flicker in interlaced ordered dither images
04/27/1976	US3953666 Television system for simultaneously transmitting and receiving a plurality of independent pictures on a single carrier screen
04/20/1976	US3952186 Apparatus for the generation of a two-dimensional discrete fourier transform
04/13/1976	US3950607 Bandwidth compression system and method
04/06/1976	US3949170 Signal transmitting system including A-D and D-A converters
03/1976
03/30/1976	US3947882 Vending system for remotely accessible stored information
03/30/1976	US3947870 Receiving system for auxiliary information signal transmitted during the vertical blanking period of a television signal
03/30/1976	US3947826 Scan convertor
03/30/1976	US3947624 System for conducting a television audience survey
03/23/1976	US3946159 Hospital communication system
03/23/1976	US3946158 Video-telephone system initially signifies caller to called subscriber
03/16/1976	US3944943 Broadband amplifier
03/16/1976	US3944742 Burst frequency shift keying data communication system
03/16/1976	US3944737 Television camera measuring devices
03/16/1976	US3944736 Voice-operated switching circuit for a video communications system
03/16/1976	US3944729 Stabilized terrain optical position sensor
03/09/1976	US3943447 Method and apparatus for bi-directional communication via existing CATV system
03/02/1976	US3942117 All saturated switching mode solid state RF amplifier
03/02/1976	US3941924 Simplified multi-channel data sensor system
03/02/1976	US3941921 System for converting frequency band of picture signal
03/02/1976	US3941920 Receiver for a still picture broadcasting signal

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