Patent ID: 9647683
Date: 2017-05-09
CPC Classifications: H03M

Claim:
1. An entropy encoding apparatus comprising: a decomposer configured to convert a sequence of syntax elements having a value range which is sub-divided into a sequence of N partitions into a sequence of source symbols by individually decomposing at least a subgroup of the syntax elements into a respective number n of source symbols s, with i=1 . . . n, the respective number n of source symbols depending on as to which of the sequence of N partitions a value z of the respective syntax elements falls into, so that a sum of values of the respective number of source symbols s a subdivider configured to subdivide the sequence of source symbols into a first subsequence of source symbols and a second subsequence of source symbols such that all source symbols s a VLC encoder configured to symbol-wisely encode the source symbols of the first subsequence; and an arithmetic encoder configured to encode the second subsequence of source symbols, wherein the values z of the subgroup of the syntax elements are absolute values, and wherein the decomposer is configured to adapt one or more of limits between the partitions according to previously encoded source symbols.