MPEG video drift reduction
US7145946B2 · kind B2 · utility
18Cited by
9References
12Claims
0Family size
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Inventor
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Dec 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drift reduction method and apparatus. Drift reduction is effected in an MPEG video transcoder by decoding dropped out pixels to form a drift reference frame. The quantization indices in the current macro-block are changed accordingly in a drift reduction process. The compensated quantized frame is then variable length coded to an MPEG bitstream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.