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1. (WO2013116874) METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS

Pub. No.:    WO/2013/116874    International Application No.:    PCT/US2013/024786
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Wed Feb 06 00:59:59 CET 2013
IPC: H04N 7/26
Applicants: MOTOROLA MOBILITY LLC
Inventors: LOU, Jian
WANG, Limin
Title: METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS
Abstract:
A system is provided for creating binary codewords for transform coefficients used for relating transform units (TUs) divided into coding units (CUs) in a High Efficiency Video Coding (HEVC) system. The system provides binarization of the codewords and removes unnecessary operations to reduce system complexity and increase compression performance. The system generates transform coefficients that relate the TUs and begins by providing a parameter variable (cRiceParam) set to an initial value of zero. Significant transform coefficients are converted into binary codewords based on the current value of the parameter variable, and the parameter variable is then updated with a new current value after each transform coefficient has been converted. Updating can be provided with reference to table values or the values can be provided from combination logic.