Patents
Sitemap › H04 - Electric communication technique › H04N - Pictorial communication, e.g. television › H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand]
Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445)
01/1996
01/02/1996US5481542 Interactive information services control system
01/02/1996US5481296 Apparatus and method for selectively viewing video information
12/1995
12/27/1995EP0689364A2 Recording and reproducing digital video signals
12/27/1995EP0689362A2 Sound-synchronised video system
12/27/1995EP0689360A2 Variable transfer rate video coding apparatus
12/26/1995US5479617 System for combining and encoding first plurality of video signals to produce second plurality of signals and transmitting the signals via unshielded telephone cable to remote workstation
12/26/1995US5479268 User interface for television schedule system
12/26/1995US5479266 User interface for television schedule system
12/26/1995US5479202 Television receiver for accessing switched broadband networks
12/24/1995CA2152129A1 Method and apparatus for recording digital video signals and apparatus for reproducing the digital video signals
12/22/1995CA2149068A1 Sound-synchronized video system
12/21/1995WO1995034863A1 Smart card message transfer without microprocessor intervention
12/21/1995WO1995031072A3 An improved modem to support multiple site call conferenced data communications
12/20/1995CN1113623A Multimedia distribution over wide area networks
12/20/1995CN1113591A Data producing device
12/19/1995US5477275 Video signal receiving system with signal source switching based on generated control signals
12/19/1995US5477263 Method and apparatus for video on demand with fast forward, reverse and channel pause
12/19/1995US5477262 Method and apparatus for providing an on-screen user interface for a subscription television terminal
12/14/1995WO1995034170A1 Interactive broadband multimedia system
12/14/1995WO1995034168A2 A two-way multiple access communication system, and a central station and a user station for use in such a system
12/13/1995EP0686908A1 Server for video on demand system
12/12/1995US5475754 Packet video signal inverse transport processor memory address circuitry
12/07/1995WO1995033338A1 Dynamically programmable digital entertainment terminal
12/07/1995WO1995033329A2 Method and apparatus for processing a conditional access program guide as for a satellite tv service
12/06/1995EP0685971A2 Video coding apparatus comprising a plurality of encoders
12/05/1995US5473609 Method and apparatus for processing a conditional access program guide as for a satellite TV service
12/05/1995US5473479 Digital recording and/or reproduction apparatus of video signal rearranging components within a fixed length block
12/05/1995US5473385 Clock correction in a video data decoder using video synchronization signals
12/05/1995US5473366 Television-telephone apparatus having a message-keeping function and an automatic response transmission function
11/1995
11/30/1995WO1995032587A1 Video clip program guide
11/30/1995WO1995032578A2 Mpeg decoder
11/30/1995WO1995032565A1 Method for dynamically allocating communication channel bandwidth between competing applications
11/30/1995WO1995032563A1 Apparatus and method for generating product coupons in response to televised offers
11/30/1995WO1995032505A1 Memory device
11/30/1995WO1995028795A3 Arrangement for decoding digital video signals
11/30/1995WO1995027977A3 Method of transmitting timing-critical data via an asynchronous channel
11/30/1995CA2191113A1 Memory device
11/29/1995EP0684721A2 Data bus communication
11/29/1995EP0683959A1 Local communication system and station for use in such a system
11/29/1995EP0683955A1 Management of channel buffer in video decoders
11/29/1995EP0683951A1 Multimedia distribution system
11/28/1995US5471450 Digital data reproducing apparatus and method employing buffer memories for error compensation and accomodating differences in reproduction and processing rates
11/28/1995US5471249 Scan converting apparatus for transferring subtitles on a screen
11/23/1995WO1995031875A1 Method and apparatus for operating a multicast system on an unreliable network
11/23/1995WO1995028794A3 Arrangement and method for transmitting and receiving video signals
11/23/1995WO1995027978A3 Recording and reproducing an mpeg information signal on/from a record carrier
11/22/1995EP0683614A1 Reception apparatus and method
11/22/1995EP0682833A1 Flow control by evaluating network load.
11/22/1995EP0682830A1 A multiplex control packet for digital services
11/22/1995EP0671102A4 Picture-in-picture tv with insertion of a mean only frame into a full size frame.
11/22/1995CN1112333A A method for controlling execution of an audio video interactive program
11/21/1995US5469431 Method of and apparatus for channel mapping with relative service identification
11/21/1995US5469206 System and method for automatically correlating user preferences with electronic shopping information
11/16/1995WO1995031072A2 An improved modem to support multiple site call conferenced data communications
11/15/1995CN1111883A Data word indicator in a system for assembling transport data packets
11/15/1995CN1111875A Multi-video/audio system and method of controlling the same
11/14/1995US5467212 Addressable grating modulation system for optical cable TV system
11/14/1995US5467133 Apparatus for compensating video motions in digital televisions
11/09/1995WO1995030309A1 Method and apparatus for graceful degradation of image playback frames rates
11/09/1995WO1995030302A1 Video mix program guide
11/09/1995WO1995026111A3 An encoder buffer having an effective size which varies automatically with the channel bit-rate
11/07/1995US5465385 CATV system with an easy program reservation
11/02/1995WO1995029560A1 Conditional access information arrangement
11/02/1995WO1995029559A1 A multiplexer system using constant bit rate encoders
11/02/1995WO1995029550A1 Complexity determining apparatus
11/02/1995WO1995029545A1 Asynchronous control signal generating apparatus
11/02/1995WO1995029541A1 Complexity determining apparatus
11/02/1995WO1995029540A1 Parameter sampling apparatus
11/02/1995EP0680215A2 Method for processing and reproducing data and circuits therefor
11/02/1995EP0680213A2 A method for controlling execution of an audio video interactive program
11/02/1995EP0679317A1 Broadcast channel substitution method and apparatus
10/1995
10/26/1995WO1995028804A1 A distance learning system providing individual television participation, audio responses, and memory for every student
10/26/1995WO1995028802A1 Minimum-delay jitter smoothing device and method for packet video communications
10/26/1995WO1995028799A1 Method and apparatus for providing interactive electronic programming guide
10/26/1995WO1995028798A1 System and method for subscriber interactivity in a television system
10/26/1995WO1995028795A2 Arrangement for decoding digital video signals
10/26/1995WO1995028794A2 Arrangement and method for transmitting and receiving video signals
10/26/1995WO1995028684A1 Device, method and system for variable bit-rate packet video communications
10/26/1995CA2187880A1 Method and apparatus for providing interactive electronic programming guide
10/25/1995EP0679030A2 Packet program component detector
10/25/1995EP0679029A1 System for cooperating with a satellite transponder
10/24/1995US5461667 In a data communication system
10/24/1995US5461619 System for multiplexed transmission of compressed video and auxiliary data
10/24/1995US5461612 Drop-and-add multiplexer for converting and processing a frequency multiplex signal
10/19/1995WO1995028055A1 Interactive scroll program guide
10/19/1995WO1995028050A1 Data level selection for multilevel vsb transmission system
10/19/1995WO1995027978A2 Recording and reproducing an mpeg information signal on/from a record carrier
10/19/1995WO1995027977A2 Method of transmitting timing-critical data via an asynchronous channel
10/18/1995EP0677843A1 Recording medium which can cope with various languages and reproduction apparatus
10/18/1995EP0677834A1 Portable liquid crystal display device and method for changing receivable channel of it
10/17/1995US5459789 Packet TV program component detector
10/17/1995US5459522 Method for acquisition and display of an on-screen program guide
10/12/1995WO1995027376A1 System and method for synchronized presentation of video and audio signals
10/12/1995WO1995027352A1 High speed bidirectional digital cable transmission system
10/11/1995EP0676899A2 Audio-visual communication system having integrated perceptual speech and video coding
10/10/1995US5457580 Video compression/expansion apparatus for digital VCR
10/05/1995WO1995026609A1 Method of writing identification number of electronic machine
10/05/1995WO1995026597A1 Methods for providing conditional access information to decoders in a packet-based multiplexed communications system
10/04/1995EP0675656A2 Moving image coding device
10/04/1995EP0675651A1 Method and apparatus for displaying a sequence of digital images received from a distant source
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