Method and device for error control of a macroblock-based video compression technique
US5778191A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1995 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Oct 26, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method (200) and device (300) for error control of a video compressed sequence in which error protection for both random and burst channel errors is provided. The error control syntax (100) applies a fixed length packet synchronization system to variable length coded compressed video data, which provides the capability to limit error propagation within the decoded video bit stream. The fixed length packet control information provides information to decode compressed video data in both forward and reverse directions to allow for the recovery of correctly decoded video data within a decoded frame after long bursts of channel errors while reducing the overhead for error control. The error control method also provides video error detection which may be used for error concealment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.