Method of determining binary codewords for transform coefficients
US9641835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2012 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Aug 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system is provided for determining a binary codeword for a symbol representing a transform coefficient within transform units (TUs) that divide up coding units (CUs) in a High Efficiency Video Coding (HEVC) system. The system determines a truncated rice prefix and, when a parameter variable is greater than zero, determines a truncated rice suffix for the symbol. The system determines a main prefix either from the truncated rice prefix alone, or from a combination of the truncated rice prefix and the truncated rice suffix. When the main prefix is the same as a comparison string, the system also determines a main suffix. The system determines the final binary codeword for the symbol either from the main prefix alone, or from a combination of the main prefix and the main suffix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.