| 摘要 |
The present invention relates to a device (40) for decoding coded digital data (1) as a function of a context given by decoded digital data, comprising means (11) for the arithmetic decoding of the coded digital data that are suitable for supplying a current decoded digital data (2), control means (13) suitable for supplying a probability (4) to the arithmetic decoding means from a context word (3), and a processing circuit (12) suitable for storing a set of lines of decoded digital data and for supplying the context word (3) from previous decoded digital data. The processing circuit is suitable for causing cyclic movement of the data within the storage means such that the accesses required for the formation of the context word are made to the same locations in the storage means, thus enabling the context word to be extracted in a regular manner.
|
