Patent · US Active

Method and apparatus for improved entropy encoding and decoding

US9693056B2 · kind B2 · utility

5Cited by

1References

33Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Yang Hu · Lake Orion, US
Joel Sole · Village of La Jolla, US
Xiaoan Lu · Princeton, US
Peng Yin · Ithaca, US
Yunfei Zheng · Plainsboro, US

Key dates

Filing date	Oct 6, 2011
Grant date	Jun 27, 2017
Priority date	—
Expiry date	Mar 10, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/70
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Methods and apparatus are provided for improved entropy encoding and decoding. An apparatus includes a video encoder for encoding at least a block in a picture by transforming a residue of the block to obtain transform coefficients, quantizing the transform coefficients to obtain quantized transform coefficients, and entropy coding the quantized transform coefficients. The quantized transform coefficients are encoded using a flag to indicate that a current one of the quantized transform coefficients being processed is a last non-zero coefficient for the block having a value greater than or equal to a specified value.

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