Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445) |
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12/11/1997 | WO1997046073A2 An access network over a dedicated medium |
12/11/1997 | WO1997042762A3 Security device managed access to information |
12/11/1997 | CA2257971A1 Program guide for dbs and cable tv |
12/11/1997 | CA2253657A1 An access network over a shared medium |
12/10/1997 | EP0811940A2 Web browser allowing navigation between hypertext objects using remote control |
12/10/1997 | EP0811939A2 Method and apparatus for providing proxying and transcoding of documents in a distributed metwork |
12/10/1997 | CN1167405A Conditional visiting information device |
12/09/1997 | US5696815 In an integrated network |
12/09/1997 | US5696562 On-screen signal generating apparatus for a cable television |
12/04/1997 | WO1997046027A1 Preserving synchronization of audio and video presentation |
12/04/1997 | WO1997046019A1 Method and apparatus for processing a digital signal |
12/04/1997 | WO1997046017A1 An adaptive decoding system for processing encrypted and non-encrypted video data |
12/04/1997 | WO1997046016A1 Television schedule system with access control |
12/04/1997 | WO1997046015A1 Dynamic rate control technique for video multiplexer |
12/04/1997 | WO1997046010A1 Decoding of digital data including program specific information |
12/04/1997 | WO1997046008A1 Processing of digital data and program guide information |
12/04/1997 | WO1997046007A1 Packetized data formats for digital data storage media |
12/04/1997 | WO1997045965A1 Method and apparatus for splicing compressed information streams |
12/04/1997 | DE19630397C1 Count difference provision system for digital transmission system |
12/04/1997 | CA2838717A1 Television schedule system with access control |
12/04/1997 | CA2793819A1 Television schedule system with access control |
12/03/1997 | EP0756797A4 Method and apparatus for providing interactive electronic programming guide |
12/03/1997 | CN1166906A Digital data packet multiplexer, particularly for digital television |
12/03/1997 | CN1166905A Digital data packet multiplexer, particularly for digital television |
12/03/1997 | CN1166904A Digital data packet multiplexer, in particular for digital television |
12/02/1997 | US5694334 Method and apparatus for electronic distribution of digital multi-media information |
12/02/1997 | US5694176 Method and apparatus for generating television program guides with category selection overlay |
12/02/1997 | US5694163 Method and apparatus for viewing of on-line information service chat data incorporated in a broadcast television program |
11/26/1997 | CN1166139A Information handling for interactive appts. |
11/26/1997 | CN1166122A Remote controller, transmitting and receiving apparatus and method |
11/26/1997 | CN1166108A Receiving apparatus, receiving method, and terminal unit |
11/25/1997 | US5692020 Signal processing apparatus and method |
11/25/1997 | US5691986 Methods and apparatus for the editing and insertion of data into an encoded bitstream |
11/25/1997 | US5691819 Apparatus for producing a legible video image during high speed reproduction of a digital video signal |
11/19/1997 | EP0808064A1 Method and apparatus for information processing for data transfer network |
11/19/1997 | EP0807356A1 Video signal processing |
11/19/1997 | EP0807304A1 Time compression/expansion without pitch change |
11/13/1997 | WO1997042763A1 Information system |
11/13/1997 | WO1997042762A2 Security device managed access to information |
11/13/1997 | WO1997042758A1 Multimedia optical disk, reproducing device, and reproducing method capable of superposing sub-video upon main video in well-balanced state irrespective of position of main video on screen |
11/13/1997 | WO1997042731A1 System and method for high-speed skew-insensitive multi-channel data transmission |
11/13/1997 | WO1997042582A1 Multicasting method and apparatus |
11/13/1997 | CA2776347A1 Information system |
11/13/1997 | CA2731360A1 Methods and systems for playing media |
11/12/1997 | EP0806868A2 Recording medium |
11/12/1997 | EP0806114A1 System and method for selectively distributing commercial messages over a communications network |
11/12/1997 | EP0806112A1 Electronic television program guide schedule system and method with display and search of program with alphabetical title listings |
11/12/1997 | CN1164948A Transmission of menus to receiver |
11/12/1997 | CN1164794A 电视接收机和附加信息发送方法 The television receiver and the additional information transmission method |
11/11/1997 | US5687236 Steganographic method and device |
11/11/1997 | US5686963 Method for performing rate control in a video encoder which provides a bit budget for each frame while employing virtual buffers and virtual buffer verifiers |
11/06/1997 | WO1997041690A1 Tv with url reception for internet access |
11/05/1997 | EP0805599A2 Video encoder/decoder with scrambling functions |
11/05/1997 | EP0805598A1 Method and apparatus for replacing stuffing bits with supplementary data in an MPEG video data stream |
11/05/1997 | EP0805594A2 Remote controller, transmitting and receiving apparatus and method |
11/05/1997 | EP0804857A1 Method and device for global bitrate control of a plurality of encoders |
11/05/1997 | EP0804855A1 Modem with automatic callback provisions |
11/05/1997 | EP0683951B1 Multimedia distribution system |
11/04/1997 | USRE35651 Secure hierarchial video delivery system and method |
11/04/1997 | US5684799 Full service network having distributed architecture |
11/04/1997 | US5684715 Interactive video system with dynamic video object descriptors |
11/04/1997 | US5684542 Video subtitle processing system |
11/04/1997 | US5684525 Merging multi-source information in a television system |
10/30/1997 | WO1997040623A1 System and method for creating trick play video streams from a compressed normal play video bitstream |
10/29/1997 | EP0804033A2 Improvements in or relating to electronic devices |
10/29/1997 | EP0804032A2 Transmitter-receiver of three-dimensional skeleton structure motions and method thereof |
10/29/1997 | EP0804028A1 Near video on-demand system and televising method of the same |
10/29/1997 | EP0803819A2 Method of assigning a data packet to a channel in a IEEE 1394 communications system |
10/29/1997 | EP0803163A1 A multiplexer system using constant bit rate encoders |
10/29/1997 | EP0803155A1 An adaptor card providing conditional access |
10/29/1997 | EP0803110A1 Audiovisual distribution system |
10/29/1997 | CN1163534A Television set with radio receiver |
10/28/1997 | US5682511 Graphical viewer interface for an interactive network system |
10/28/1997 | US5682196 Three-dimensional (3D) video presentation system providing interactive 3D presentation with personalized audio responses for multiple viewers |
10/28/1997 | US5682195 Digital cable headend for cable television delivery system |
10/23/1997 | WO1997039588A1 Image encoder, image encoding method and medium on which image encoding program is recorded |
10/23/1997 | WO1997039584A1 Video transcoder |
10/23/1997 | WO1997039576A1 Video signal transmission device |
10/22/1997 | EP0802682A1 Video encoder and recording device |
10/21/1997 | US5680639 Multimedia control system |
10/21/1997 | US5680457 System for updating an authorization memory |
10/21/1997 | US5680454 Method and system for anti-piracy using frame rate dithering |
10/21/1997 | US5680146 Local communication system and station for use in such a system |
10/16/1997 | WO1997038531A1 In-camera image marking and authentication |
10/16/1997 | WO1997038530A1 Method for providing a secure communication between two devices and application of this method |
10/15/1997 | EP0800747A1 Digital video programme multiplexing device |
10/15/1997 | CA2201679A1 Video data storage |
10/14/1997 | US5677969 Method, rate controller, and system for preventing overflow and underflow of a decoder buffer in a video compression system |
10/14/1997 | US5677911 Data frame format for a digital signal having multiple data constellations |
10/14/1997 | US5677895 Apparatus and methods for setting timepieces |
10/09/1997 | WO1997037492A1 A method for controlling copy protection in digital video networks |
10/09/1997 | WO1997037454A1 Apparatus and method for spectrum management in a multipoint communication system |
10/08/1997 | EP0799551A1 Memory controller for decoding and displaying compressed video data |
10/08/1997 | CN1161532A Method of reproducing multimedia data and multimedia data server system |
10/07/1997 | US5675743 Multi-media server |
10/07/1997 | US5675732 Dynamic channel assignment for TCP/IP data transmitted via cable television channels by managing the channels as a single sub network |
10/07/1997 | US5675654 System and method for interfacing a transport decoder to a national renewable security systems (NRSS) smart card |
10/07/1997 | US5675646 Method of writing identification number of electronic apparatus |
10/07/1997 | US5675511 Apparatus and method for event tagging for multiple audio, video, and data streams |
10/07/1997 | US5675384 VBR MPEG video encoding for ATM networks with dynamic bandwidth renegotiation |