System and method for transcoding multiple channels of compressed video streams using a self-contained data unit
US6483543B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1999 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Feb 3, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4347
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for transcoding multiple channels of compressed video streams using a self contained data unit such as an autonomous frame includes an autonomous frame processing unit having an autonomous frame generator and an autonomous frame recoder. The autonomous frame generator receives video data and divides it into a series of autonomous frames. Each autonomous frame preferably comprises 1) a frame header including all header information from the original video data plus enough additional information to allow the frame to be recoded using pre-defined autonomous frame structure, and 2) a frame payload including the original video data information. The autonomous frame recoder process the autonomous frames including extracting processing parameters, extracting the video data and setting up or initializing the recoder to process the extracted video data. The autonomous frame recoder preferably further comprises a parser coupled to an initialization unit and a recoder. The present invention also includes a method for processing video data including the steps of: receiving a video bitstream, storing recoding information, dividing the video bitstream into a plurality of autonomous frame…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.