Error recovery method for video compression coding using multiple reference buffers and a message channel
US6658618B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1999 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Sep 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Transmitting and receiving video data includes an encoder storing macroblocks in a plurality of reference buffers, the encoder transmitting macroblocks encoded relative to each of the reference buffers, a decoder receiving the macroblocks, and, in response to the decoder indicating an error with respect to a particular macroblock corresponding to a first one of the buffers, the encoder using a second one of the buffers for error recovery if there is no error associated with the second buffer. In response to the decoder indicating an error with respect to a particular macroblock and all of the buffers having errors associated therewith, the encoder may transmit at least one macroblock that is encoded independent of any other macroblocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.