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