| Patents for H04N 21 - Selective content distribution, e.g. interactive television, vod [video on demand] (56,445) |
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| 05/11/1994 | CA2148270A1 A multiplex control packet for digital services |
| 05/05/1994 | DE4335271A1 Data demultiplexer for decoding video data - generates signals to control decoding operations with control circuit supplied by video synchronising signal generator |
| 05/05/1994 | DE4236989A1 Verfahren zur Übertragung und/oder Speicherung digitaler Signale mehrerer Kanäle Method for the transmission and / or storage of digital signals of multiple channels |
| 05/04/1994 | EP0595268A2 Variable transfer rate control coding apparatus, reproducing apparatus and recording medium |
| 05/03/1994 | US5309478 Method and apparatus for hybrid analog/digital signal processing |
| 05/03/1994 | US5309290 Apparatus for variably compressing video and audio information within constant data block |
| 04/28/1994 | WO1994009595A1 Method and apparatus including system architecture for multimedia communications |
| 04/27/1994 | EP0594353A1 Initializing terminals in a signal distribution system |
| 04/27/1994 | EP0594351A1 Interactive television converter |
| 04/27/1994 | EP0594350A1 Interactive television multicasting |
| 04/26/1994 | US5307172 Method and apparatus for automatically inserting titles for video programs on video tape |
| 04/26/1994 | US5307055 Display control device incorporating an auxiliary display |
| 04/20/1994 | EP0593272A2 An electronic appliance control apparatus |
| 04/06/1994 | EP0590974A2 Coded data editing apparatus and edited coded data decoding apparatus |
| 04/06/1994 | CN1085034A Favorite channel selection using extended keypress |
| 04/05/1994 | US5301191 Adaptive switching of multimedia audio and video information in an ISDN line |
| 04/05/1994 | US5301028 Method and apparatus for displaying channel identification information |
| 03/30/1994 | EP0589709A2 Multiresolution transmission system |
| 03/30/1994 | EP0589657A2 Network system and terminal apparatus |
| 03/23/1994 | CN2159637Y Signal receiver |
| 03/22/1994 | US5296932 Non-program signal acquisition system for a television signal receiver |
| 03/15/1994 | US5294982 Method and apparatus for providing dual language captioning of a television program |
| 03/15/1994 | US5294981 Television video synchronization signal monitoring system and method for cable television system |
| 03/09/1994 | EP0586010A1 High frequency circuit device and method for making the same |
| 03/03/1994 | WO1994005117A1 A participatory television system |
| 03/01/1994 | US5291291 ATV television system with reduced co-channel NTSC interference |
| 03/01/1994 | US5291289 Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation |
| 03/01/1994 | CA1327393C Presentation player |
| 02/17/1994 | WO1994003995A1 Video distribution network |
| 02/15/1994 | US5287351 Method and apparatus for minimizing error propagation in correlative digital and communication system |
| 02/08/1994 | US5285278 Electronic redeemable coupon system via television |
| 02/08/1994 | US5285265 Display apparatus informing of programmed recording |
| 01/26/1994 | EP0580011A2 Method for the transmission of digital video and audio signals and suitable receiving apparatus |
| 01/19/1994 | CN1081036A Method and apparatus for minimizing error propagation in correlative digital communication system |
| 01/12/1994 | EP0578201A2 Method and apparatus for transmitting a video signal, and apparatus for receiving a video signal |
| 01/11/1994 | US5278646 Efficient frequency scalable video decoding with coefficient selection |
| 01/05/1994 | EP0577327A1 Efficient frequency scalable video encoding with coefficient selection |
| 01/05/1994 | EP0576797A2 Reduction of interchannel harmonic distortions in a analog and digital signal multiplex |
| 01/05/1994 | EP0576586A1 Automatic frequency selection in a bi-directional cable television system |
| 12/29/1993 | EP0575956A2 Favourite channel selection using extended keypress duration |
| 12/22/1993 | EP0575185A2 Image display apparatus |
| 12/21/1993 | US5272753 Scrambling apparatus |
| 12/21/1993 | US5272529 Adaptive hierarchical subband vector quantization encoder |
| 12/14/1993 | US5270800 Subliminal message generator |
| 11/30/1993 | US5267021 Multiresolution digital television broadcast system |
| 11/24/1993 | EP0571005A2 Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation |
| 11/18/1993 | EP0569350A1 Television programme distribution system. |
| 11/17/1993 | CN1022782C Digital Signal Processing system for segment coding and coder, decoder thereof |
| 11/16/1993 | US5262875 Audio/video file server including decompression/playback means |
| 11/16/1993 | US5262854 Lower resolution HDTV receivers |
| 11/11/1993 | WO1993022874A1 Product information storage, display, and coupon dispensing system |
| 11/10/1993 | EP0569274A1 Apparatus for inserting digital TV programs in a transmission or diffusion channel and apparatus for receiving said programs |
| 11/09/1993 | US5260978 Synchronous residual time stamp for timing recovery in a broadband network |
| 11/09/1993 | US5260783 Layered DCT video coder for packet switched ATM networks |
| 11/03/1993 | EP0516741A4 Hybrid analog/digital signal processing |
| 10/27/1993 | EP0566662A1 Audio and video transmission and receiving system |
| 10/14/1993 | WO1993020658A1 Multiresolution digital television broadcast system |
| 10/12/1993 | US5253066 TV recording and viewing control system |
| 10/12/1993 | US5253055 Efficient frequency scalable video encoding with coefficient selection |
| 10/12/1993 | CA1323104C Digital to amplitude modulated analog converter |
| 09/30/1993 | WO1993019543A1 Method and apparatus for minimizing error propagation in correlative digital communication system |
| 09/29/1993 | EP0562875A1 Multiresolution QAM system |
| 09/29/1993 | CN1076824A Lower resolution hdtv receivers |
| 09/29/1993 | CN1076816A System of communication |
| 09/28/1993 | US5249044 Product information storage, display, and coupon dispensing system |
| 09/21/1993 | US5247348 Method for selecting reproduction quality of transmitted vector quantized data |
| 09/21/1993 | US5247347 Pstn architecture for video-on-demand services |
| 09/15/1993 | EP0560593A2 Monitor apparatus for audio-visual system |
| 09/07/1993 | US5243419 Method for transmitting signals that represent symbols |
| 09/02/1993 | WO1993017523A1 Lower resolution hdtv receivers |
| 08/31/1993 | US5241382 Digital HDTV data packet format and receiver therefor |
| 08/25/1993 | CN1075581A Headend proctessing for a digital transmission system |
| 08/24/1993 | US5239308 Digital signal processing system |
| 08/20/1993 | EP0605454A4 Pstn architecture for video-on-demand services. |
| 08/17/1993 | US5237610 Independent external security module for a digitally upgradeable television signal decoder |
| 08/10/1993 | US5235643 Satellite receiver retuning system |
| 08/10/1993 | US5235619 Cable television radio frequency subscriber data transmission apparatus and rf return method |
| 08/05/1993 | WO1993015571A1 Smoothing delay-sensitive traffic offered to atm networks |
| 08/05/1993 | DE4301740A1 TV signal converter for video and two audio carrier signals - has video signal perception demodulators, generating base band video signal and two audio signals |
| 08/04/1993 | EP0553910A1 Television receiver |
| 08/03/1993 | US5233423 Embedded commericals within a television receiver using an integrated electronic billboard |
| 07/27/1993 | US5231494 Selection of compressed television signals from single channel allocation based on viewer characteristics |
| 07/20/1993 | US5229847 Television signal processing system including modulated auxiliary carrier |
| 07/14/1993 | EP0506877A4 Media pipeline system |
| 07/08/1993 | WO1993013625A1 Method and apparatus for data redcution in a video image data reduction system |
| 07/08/1993 | WO1993013623A1 Method and apparatus for providing dual language captioning of a television program |
| 07/06/1993 | US5225902 Automatic frequency selection in a bi-directional cable television system |
| 06/30/1993 | EP0548286A1 User interface for television schedule system |
| 06/22/1993 | US5221962 Subliminal device having manual adjustment of perception level of subliminal messages |
| 06/10/1993 | WO1993011641A1 Method and apparatus for displaying channel identification information |
| 06/10/1993 | WO1993011640A1 Method and apparatus for providing an on-screen user interface for a subscription television terminal |
| 06/10/1993 | WO1993011639A1 Method and apparatus for providing message information to subscribers in a cable television system |
| 06/10/1993 | WO1993011636A1 Telephone line picture transmission |
| 06/10/1993 | WO1993004572A3 Coding of images and originals, for example for telefax and colour television |
| 06/09/1993 | EP0545030A1 Method of processing picture source signals with or without sound signal and use of the method |
| 06/01/1993 | US5216515 Addressable video feed system |
| 05/27/1993 | WO1993010631A1 Method for selecting reproduction quality of transmitted vector quantized data |
| 05/27/1993 | WO1993010627A1 Process for synchronizing the scanning circuit of an image display device |
| 05/27/1993 | WO1993010606A1 Headend processing for a digital transmission system |
| 05/27/1993 | WO1993010605A1 Transaction based interactive television system |