Method for distributing digital TV signal and selection of content
US6636533B1 · kind B1 · utility
3Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2000 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Apr 21, 2020 |
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 substream 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.