Method and apparatus to detect anchor frames from digital video streams
US7606303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2004 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Jan 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method (60) and apparatus process video in a multiple encoder system by identifying (61) those frames that were originally encoded as anchor frames in the first encoder and ensuring that a second encoder encodes (65) these identified frames as anchor frames rather than bidirectional frames or non-anchor frames. In addition, the second encoder identifies (62) those frames that were originally encoded as non-anchor frames in the first encoder and encodes (66) the non-anchor frames, such as bidirectional frames, as non-anchor frames during the second encoding process. Once the anchor and non-anchor frames are identified, a frame-type pattern is determined (63) by the first encoder and synchronizes (64) the second encoder to the frame-type pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.