Communication system using an intersource coding technique
US6215821A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 1996 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Aug 7, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/46
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for achieving maximum bandwidth reduction in communication networks. The invention provides a multisource coding scheme, implemented through an intersource coding block that provides maximum bandwidth reduction for transmissions from a plurality of time-correlated information sources over a single physical link. In one embodiment of the invention the intersource encoder uses run-length coding to compress the aggregate bit rate before the physical transmission. The intersource encoder provides data compression for both completely correlated and partially correlated sources. For completely correlated sources, the intersource encoder strips off the intersource redundancies and transmits only a single copy of the information over the physical link, wherein the single copy is a superpicture. For partially correlated sources, the intersource encoder compresses the aggregate signal through a predetermined coding scheme, including vector run-length coding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.