Method and apparatus for implementing reduced memory mode for high-definition television
US6983017B2 · kind B2 · utility
16Cited by
9References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2001 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Jun 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided for implementing an enhanced reduced memory mode (RMM) of decoding HDTV MPEG-2 video stream. In one instance, the RMM mode is adaptively enabled with up/down conversion by using the picture-type information. In another instance, the RMM mode is provided by performing anchor-frame compression/decompression by using adaptive DPCM technique with picture-type information. The quantization (PCM) tables are generated using the Lloyd algorithm. Further, the predictor for each pixel is determined by a use of the Graham rule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.