Data compression for use with a communications channel
US6489902B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Sep 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method, and apparatus for accomplishing the method, of compressing data for transmission over a communications channel by receiving one or more data symbols comprising a current data string and at least one subsequent symbol, matching a longest previous data string with the current data string, the previous data string being defined by a code word, placing the code word into a compressed data stream, attempting to extend the current data string by a plurality of symbols, placing, in the event the current data string is extended, a string-extension length indicative of the plurality of symbols into the compressed data stream, and transmitting the compressed data stream though the communications channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.