Method and apparatus for use in transmitting video information over a communication network
US6754266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1998 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | May 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive region-based, multi-scale, motion compensated video compression algorithm design for transmission over hostile communication channels. The algorithm is embodied in a video encoder that extracts spatial information from video frames to create video regions that are then decomposed into sub-bands of different perceptual importance before being compressed and transmitted independently. The system further uses unequal error protection, prioritized transmission and reconstruction to guarantee a minimum spatial and temporal resolution at the receiver. In particular, the region segmented frames bound both spatial and temporal error propagation within frames. A connection-level inter-region statistical multiplexing scheme is also employed to ensure optimal utilization of reserved transmission bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.