Method and apparatus for processing image data
US8068545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2004 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Jan 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/423
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An MPEG decoder (100-180) can use different formats (linear tiled etc) for image data memory (150) for reference pictures when decoding subsequent pictures. Each format brings advantages and disadvantages. The disclosure illustrates that it is possible for different video sequences to have characteristics which match one image buffer format well, but not another, for example where there is a lot of motion or only a little motion between images. Advantageously, the decoder employs a parameterised image buffer format and analysis of the incoming stream and/or measured decoding performance (190) so as to dynamically choose (90, 160, 170) the best image buffer format for the current part of a stream. Cache control features can also be controlled (198) to suit the particular data received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.