Picture compression process, especially of the MPEG2 type
US6661926B1 · kind B1 · utility
3Cited by
16References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Jan 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture compression process, especially of the MPEG2 type, in which each picture macroblock (10) is subjected to a coding chosen, for each macroblock, from among several types of coding. In order to select the type of coding to be applied to the macroblock, the parameter MB_activ−&agr;_Q, is determined, in which and wherein Q is the quantization interval, and &agr; is a predetermined parameter, for example equal to 1. The mode of coding selected is that corresponding to a minimum value of the parameter MB_activ−&agr;_Q.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.