Method and apparatus for providing improved data compression efficiency for an adaptive data compressor
US5874907A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1997 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Sep 19, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/46
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for providing improved data compression efficiency to a data compressor unit is disclosed. Before sending the uncompressed data stream to the data compressor unit, an incoming data byte from the uncompressed data stream is first compared with a preceding data byte from the uncompressed data stream. A first counter value is incremented in response to a match between the incoming data byte and the preceding data byte. A second counter value is then incremented in response to subsequent matches between an incoming data byte and its preceding data byte after the first counter value has reached a preset value. The second counter value is finally sent to the data compressor unit at the completion of a run of the incoming data byte in substitution of a portion of the run, such that the data compressor unit can quickly resume its optimal compression ratio after an occurrence of the run within the uncompressed data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.