Method for entropically transcoding a first data stream into a second compressed binary data stream, and corresponding computer program and image recording device
US8787455B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2009 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Aug 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/645
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for entropic transcoding of a first sequence of binary data of words to transcode into a second compressed sequence of binary data uses a predetermined entropic code involving a variable-length of the encoded words to transcode each word of the first sequence of binary data into a transcoded word. Based on a predetermined number B of low-order bits, the method includes application to each word of the first sequence of binary data: subdivision of the word into first and second subwords, wherein the first subword includes the B low-order bits of the word, and the second subword includes the other high-order bits of the word, application of the predetermined entropic code to the second subword to obtain a second transcoded subword, and obtaining the transcoded word by concatenation of the first subword and of the second transcoded subword.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.