Method for distributing digital TV signal and selection of content
US6122660A · kind A · utility
110Cited by
21References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Feb 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is a process in which broadcasters can supplement existing multimedia streams such as video and audio with additional multimedia streams in a coordinated and integrated way, allowing users, after reception of the broadcast stream, to select which sub-stream to use, without requiring an upstream channel to communicate this user preference back to the server or any additional bandwidth to broadcast these additional streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.