Channel changer for use in a switched digital video system
US6728965B1 · kind B1 · utility
50Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1997 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Aug 20, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4384
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rapid channel changer for use in a digital broadband access system. The subject rapid channel changer includes a cache buffer for storing the video data and a processor for detecting and pointing to the synchronization frames. When a subscriber's channel change request is received by the processing unit, the corresponding video signal can be quickly accessed and directed downstream to the subscriber, since the processor can immediately synchronize the video data without having to wait for the next synchronization frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.