Patents for H04N 7 - Television systems (274,023)
02/1991
02/27/1991EP0414222A2 Image superimposing apparatus
02/27/1991EP0414193A2 Adaptive quantization coder/decoder
02/27/1991EP0414113A2 Method for movement compensation in a moving-image encoder or decoder
02/27/1991EP0414074A2 Transform coding apparatus
02/27/1991EP0414017A2 Method for object-oriented movement compensation of picture information for the reproduction of coded moving picture sequences
02/27/1991EP0414016A2 Method for forming prediction pictures
02/27/1991EP0413752A1 In-band controller
02/27/1991EP0413748A1 Imaging assembly and mounting for surveillance viewing under remote control
02/27/1991CN1049586A Method of transmitting auxiliary information in television signal
02/27/1991CN1049584A Method of subcarrier multiplication which preserves am information in fm systems
02/26/1991US4996594 Dynamic image transmission system
02/26/1991US4996592 Video communication apparatus capable of electronically adjusting the field of view of a video frame
02/24/1991WO1991003131A2 Convergence control system for multiple vertical formats
02/24/1991WO1991003128A1 Control system for encoding image
02/23/1991CA2023519A1 Picture display device and video signal processing circuit
02/21/1991WO1991002430A1 Digital signal processing system
02/21/1991WO1991002287A1 Surveillance camera system
02/21/1991WO1991002194A1 A video telephone terminal or similar
02/21/1991WO1991000666A3 Method and apparatus for processing digital data
02/21/1991DE3927338A1 TV image fading by image signal coding - converts image signals into digital image point data, stored in lines at addresses
02/21/1991DE3927304A1 Subscriber terminal for limited fuser network - consists of personal computer, data memory and/or data printer
02/20/1991EP0413570A2 Picture data compression
02/20/1991EP0413225A2 Electric time-controlled combination lock for protection against unauthorized use
02/20/1991EP0413017A1 Process and device for compressing data designed for the compatible decoding of a group of television signals with an increasing degree of resolution.
02/20/1991EP0235203B1 Film video player/printer with cropping control
02/20/1991EP0235202B1 Film video player/printer
02/20/1991CN1011751B Method of transmitting update information for a stationary video picture
02/19/1991US4995080 Television signal scrambling system and method
02/19/1991US4995079 Canal+ decoder switching circuit for video cassette recorders
02/19/1991US4995078 Television broadcast system for selective transmission of viewer-chosen programs at viewer-requested times
02/19/1991US4995071 Video conference installation
02/19/1991US4995062 X-ray diagnostics installation for producing panorama tomograms of the jaw of a patient
02/19/1991US4994916 Apparatus and method for encoding identification information for multiple asynchronous video signal sources
02/19/1991US4994913 Still picture transmission-display apparatus
02/19/1991US4994911 Image information signal transmitting system with selective transmission of input data or extracted data
02/19/1991US4994909 Video signal distribution system
02/19/1991US4994908 Interactive room status/time information system
02/19/1991US4994899 Frequency generation for extended bandwidth MAC color television encoding and decoding
02/19/1991US4994662 Radiation image read-out apparatus and method for operating the same
02/19/1991CA1280509C Method and apparatus for encoding/transmitting image
02/19/1991CA1280508C Method of and apparatus for correcting picture errors in dpcm signal reception
02/19/1991CA1280507C Method of and apparatus for correcting picture errors in dpcm transmission
02/16/1991WO1991003132A1 Image reversing unit
02/14/1991DE4023866A1 Time and date controller for video tape recorder - uses time and date information in horizontal synchronisation signal to compare with preset required item and date recorder setting
02/14/1991DE3926388A1 Colour television transmission system
02/14/1991DE3926213A1 Examination system for traffic space photo-technical properties - has software controlled process computer, supplied with analog video camera video signals, recorded by video recorder
02/13/1991WO1991003127A1 Process for transmission and automatic reception of data signals in a tv signal
02/13/1991EP0412713A2 Picture coding method
02/13/1991EP0412343A2 Switching network and module for an ATM-system
02/13/1991EP0412335A2 Method and apparatus for determining audience viewing habits
02/13/1991EP0412252A2 System and circuit for the calculation of a bidimensional discrete transform
02/13/1991CN2071405U Collineation transmission apparatus for wired radio and cable tv
02/13/1991CN1049260A Closed-circuit television controlled by two conducting wires
02/13/1991CN1049259A Improved scrambler with self calibration
02/13/1991CN1011655B Restoring framing in a communications system
02/13/1991CA2059552A1 Process for transmission and automatic reception of data signals in a tv signal
02/12/1991WO1991002431A2 Transmitting auxiliary information in a television signal
02/12/1991US4993066 Method for television scrambling
02/12/1991US4993003 Apparatus for updating time-of-day information in a signal
02/12/1991US4992889 Encoding apparatus for compressing and outputting image data
02/12/1991US4992873 Video signal noise reduction apparatus using amplitude companding and predictive signal processing techniques
02/12/1991US4992871 Method and apparatus for processing identification signals
02/12/1991US4992870 Motion dependent video signal processing
02/12/1991US4992869 Motion dependent video signal processing
02/12/1991US4992868 For reducing the data transmission for digital image sequences
02/12/1991US4992867 Technique for monitoring magazine readers while permitting a greater choice for the reader of possible reading positions
02/12/1991US4992866 Camera selection and positioning system and method
02/12/1991US4992865 Teletext receiving device for the blind
02/12/1991US4992853 System for transmission and reception of a high definition time multiplexed analog component (HDMAC) television signal having an interlaced input/output format
02/12/1991US4992782 Character and graphics data display apparatus having data compression capability
02/12/1991US4992754 Predistorter for linearization of electronic and optical signals
02/12/1991CA2064847A1 Transmitting auxiliary information in a television signal
02/12/1991CA2021093A1 Auxiliary signal in an information channel
02/12/1991CA1280203C Receiver circuit for r.f. modem
02/07/1991WO1991001612A1 Distribution network by commutation of video signals with individual modules for amplification, selection and receiving
02/07/1991WO1991001611A1 A method of subcarrier multiplication which preserves am information in fm systems
02/07/1991WO1991001609A2 Technique for representing sampled images
02/07/1991WO1991001534A2 Access control apparatus and key means
02/07/1991WO1991001167A2 Game controller
02/06/1991EP0412003A1 Device for transforming a movement information into a movement detection signal with desired number of lines and field frequency for a high definition television receiver
02/06/1991EP0411948A2 Audio signal reproducing apparatus
02/06/1991EP0411906A2 Still/moving picture selection control circuit for video phone system
02/06/1991EP0411675A2 Interframe coding apparatus
02/06/1991EP0411633A2 Scan converter control circuit having memories and address generator for generating zigzag address signal supplied to the memories
02/06/1991EP0411076A1 Video imaging system
02/06/1991EP0410987A1 Set-top interface transactions in an impulse pay per view television system
02/05/1991US4991208 Video control system having session encryption key
02/05/1991US4991206 Method and apparatus for jamming selected television programs
02/05/1991US4991025 Arrangement for automatically switching a videorecorder on and off in the absence of a code signal but in presence of a FBAS signal
02/05/1991US4991018 Teletext decoder with improved processor which determines the beginning and end of a teletext page
02/05/1991US4991017 Receiver for television and teletext signals, including a teletext decoder and an adaptive waiting time reduction circuit
02/05/1991US4991012 Television receiver displaying multiplex video information on a vertically oblong display screen and an information displaying method thereof
02/05/1991US4991011 Interactive television terminal with programmable background audio or video
02/05/1991US4991010 Dual-mode image interpolation filter operable in a first mode for storing interpolation coefficients and in a second mode for effecting television standards conversion at a pixel rate
02/05/1991US4991009 Dynamic image transmission system
02/05/1991US4991008 Automatic transaction surveillance system
02/05/1991US4991006 Apparatus using an everted hose for inspecting the interior of a lateral pipeline
02/05/1991US4991005 Glass frame viewing assembly and method of use
02/05/1991US4990911 Sampling frequency converter
02/05/1991CA1279924C Cryptographic system using interchangeable key blocks and selectable key fragments