Self-referencing bi-directionally predicted frames
US7680185B2 · kind B2 · utility
30Cited by
199References
22Claims
0Family size
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Key dates
| Filing date | Sep 15, 2004 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Mar 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An encoder/decoder uses “self-referencing” frames. For example, a second B-field in a current frame references the first B-field from the current frame in motion compensated prediction. Allowing the first B-field in a frame to act as a reference for the second B-field in the frame allows more accurate prediction of the second B-field, while also preserving the temporal scalability benefits of having B-fields in the current frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.