Compressed video data processing with conversion of image compression format
US6516135B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1997 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/9261
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A local server records compressed digital video data according to a first image compression format at normal and four times speeds, while a main server records compressed digital video data according to a second image compression format at normal speed. An image format converter is provided between the local and main servers. The image format converter converts compressed digital video data according to the first image compression format output at normal speed from the local server to compressed digital video data according to the second image compression format to be sent to the main server. The image format converter also converts compressed digital video data according to the second image compression format output at normal speed from the main server to compressed digital video data according to the first image compression format to be sent to the local server. Then, compressed digital video data can be input and output at a high speed when digital video data compressed are recorded after the image conversion format is changed and compressed digital video data are output for reproduction after the image conversion format is changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.