Optimized field-frame prediction error calculation method and apparatus in a scalable MPEG-2 compliant video encoder
US6081622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N11/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for encoding digital motion video where a motion vector is formed to describe the translation of a set of picture elements from one picture to another. This is accomplished by calculating a difference or prediction error between a current luminance macroblock and a best match reference luminance macroblock, and between a current chrominance macroblock and a best match reference chrominance macroblock. This is done by selecting a chrominance prediction mode from among a set of chrominance prediction modes. Using the selected chrominance prediction mode, a full or half pel interpolation is calculated and from this a difference or prediction error is calculated between a current chrominance macroblock and a best match reference chrominance macroblock. The required reference chrominance data is fetched, and a chrominance difference or prediction error is calculated. The output is the chrominance difference or prediction error data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.