Patent · US Active

Entropy encoding and decoding scheme

US9252806B2 · kind B2 · utility

26Cited by

3References

30Claims

0Family size

Assignee

GE Video Compression, LLC · US

Inventors

Detlev Marpe · Berlin, DE
Tung Nguyen · Berlin, DE
Heiko Schwarz · Panketal, DE
Thomas Wiegand · Berlin, DE

Key dates

Filing date	Jun 9, 2015
Grant date	Feb 2, 2016
Priority date	—
Expiry date	Jun 9, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH03M7/55
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Decomposing a value range of the respective syntax elements into a sequence of n partitions with coding the components of z laying within the respective partitions separately with at least one by VLC coding and with at least one by PIPE or entropy coding is used to greatly increase the compression efficiency at a moderate coding overhead since the coding scheme used may be better adapted to the syntax element statistics. Accordingly, syntax elements are decomposed into a respective number n of source symbols si with i=1 . . . n, the respective number n of source symbols depending on as to which of a sequence of n partitions into which a value range of the respective syntax elements is sub-divided, a value z of the respective syntax elements falls into, so that a sum of values of the respective number of source symbols si yields z, and, if n>1, for all i=1 . . . n−1, the value of si corresponds to a range of the ith partition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.