Method for compression encoding of digital picture video signals, using co-encoding of blocks from several pictures
US5990961A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Jun 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/577
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a digital picture video signal compression encoding process for transmitting such signals via a narrowband transmission medium, two or more pictures are co-encoded by encoding/decoding blocks having the same picture position, together. First, the block of the last picture is encoded/decoded, and thereafter the decoded result in this block is used as a prediction for the remaining blocks, together with information from previously decoded pictures. Preferably one single shift/movement vector is used in order to indicate a prediction for several blocks. In addition, transform coefficients representing difference signals to be transmitted, are interwoven from the blocks to be co-encoded, so that the transmission format for transforming coefficients will be the same as when encoding/decoding one block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.