Apparatus and method for data compressibility test
US7263233B2 · kind B2 · utility
1Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2002 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Apr 14, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An encoder may have a compressed mode in which a stream of input characters may be encoded into code words. The encoder may have a transparent mode in which the output stream is substantially identical to the input stream. The encoder may switch from one mode to the other based at least in part upon a data compressibility test. The test may comprise comparing an N-segment sliding average of the number of bits required by the encoder in compressed mode to represent a segment of a fixed number of characters to the number of bits required by the encoder in transparent mode to represent the segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.