Arithmetic decoding method and device

Coded data generation or conversion – Digital code to digital code converters – Adaptive coding

Reexamination Certificate

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C341S050000, C341S107000

Reexamination Certificate

active

07876240

ABSTRACT:
A method for decoding elements is disclosed. The method decodes at least a part of the binary stream into a set of elements on the basis of first and second decoding parameters CodlOffset0and CodIRange, the set of elements comprising a prefix composed of n first elements and a suffix comprising m second elements, the prefix and the suffix being separated by an element called a pivot. The method comprises:determining the value of n on the basis of the first and second decoding parameters and of the values of k consecutive bits of the binary stream, termed k first bits, so as to deduce therefrom the prefix and the value of m; anddetermining the suffix on the basis of the first and second decoding parameters and of the values of m consecutive bits which follow the n first bits of the k first bits.

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“Advanced video coding for generic audiovisual services” ITU-T Standard Pre-Published, Int'l Telecommunication Union, Geneva, CH, No. H264 3/5, Mar. 1, 2005, XP017401453.
Jian-Wen Chen et al: “A Hardware Accelerator for Context-Based Adaptive Binary Arithmetic Decoding in H.264/AVC” Circuits and Systems, 2005, IEEE Int'l Symposium on Kobe, Japan May 23-26, 2005, IEEE, pp. 4525-4528, XP010817170.
Search Report Dated Oct. 12, 2007.

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