US Patent No: 4,734,764
Number of patents in Portfolio can not be more than 2000
Cable television system selectively distributing pre-recorded video and audio messages
Stats
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Mar 29, 1988
Issued date -
May 6, 1985
filing date -
06/730,822
serial no -
Expired
status
Importance
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Abstract
A method of, and a system for, selectively delivering still television video with accompanying audio to home subscribers over a cable television system for advertising, promotional or educational purposes. A maximum number of home subscribers can interactively request presentations of their own choosing to be displayed on their home television sets. Only one standard television channel is required for transmission of still video with accompanying audio to serve 300 concurrent users. No equipment is required in the subscriber's home. The video is presented as still frames from one of a number of videodisc players, transmitted over one television channel during the appropriate time interval of 1/30th (or 1/25th) of a second. Such video frames, which may also contain overlaid graphics information, are uniquely addressed to a remote storage device. Unused bandwidth is used for the transmission of up to 300 discrete audio messages. The remote storage device identifies the appropriate video still frame, stores it, combines it with the corresponding audio message and conveys both to the home subscribers' television on a pre-selected channel. By uniquely addressing video frames to the remote storage device, either 30 (or 25) different video frames per second can be conveyed on one television channel to 30 (or 25) different remote storage devices for retransmission to home subscribers. Thus, if a home subscriber sees a given still video frame for 10 seconds, his remote storage device need not be updated for those 10 seconds, enabling the system to transmit 300 (10 seconds.times.30/second) different video frames to 300 other remote storage devices, thereby serving 300 concurrent users.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,295,154 Digital video and audio file system | 57 | 1979 | |
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| 4,337,483 Text video-transmission system provided with means for controlling access to the information | 193 | 1980 | |
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| 4,359,631 Self-service terminal | 205 | 1980 | |
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| 4,383,279 Reproduction of special purpose information on a video disc | 18 | 1980 | |
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| 4,303,941 Videotex system | 105 | 1980 | |
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| 4,253,115 Process for the transmission of an audiofrequency analog signal during line-frame synchronization intervals of a television signal and apparatus for performing this process | 6 | 1979 | |
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| 4,449,198 Device for interactive video playback | 63 | 1980 | |
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| 4,199,781 Program schedule displaying system | 75 | 1976 | |
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| 4,510,531 Rotary recording medium and reproducing apparatus thereof | 34 | 1982 | |
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| 4,461,032 CATV Service controller | 90 | 1982 | |
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| 4,233,623 Television display | 36 | 1978 | |
| 4,316,217 Method and apparatus for connecting a cable television system to a video cassette recorder | 67 | 1980 | |
| 4,450,477 Television information system | 194 | 1982 | |
| 4,499,568 Process for the teledistribution of recorded information and a system for performing this process | 47 | 1982 | |