Variable to variable length entropy encoding
US6377930B1 · kind B1 · utility
62Cited by
37References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 14, 1998 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Dec 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/42
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Entropy encoding and decoding of data with a code book containing variable length entropy-type codes that are assigned to variable length input symbol groupings. The variable length input sequences are identified by scanning an input channel, such as a live broadcast, non-volatile data storage, or network connection (e.g., LAN, WAN, Internet). Each time a symbol grouping is recognized, a corresponding entropy-type code is output as a replacement for the input stream. Decoding is the inverse process of encoding, where a code word is looked up in the code book and the corresponding original input is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.