Patent · US Active

Quantization processes for residue differential pulse code modulation

US9877035B2 · kind B2 · utility

5Cited by

1References

13Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Feng Zou · San Diego, US
Joel Sole Rojals · Village of La Jolla, US
Rajan Laxman Joshi · San Diego, US
Chao Pang · Beijing, CN
Marta Karczewicz · San Diego, US

Key dates

Filing date	Mar 16, 2015
Grant date	Jan 23, 2018
Priority date	—
Expiry date	Jun 13, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/197
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

In an example, system and method for coding encoded video data. A quantized residue differences block associated with a current block of a picture is generated and a reconstructed prediction residue for each quantized residue difference in the block of quantized residue differences is generated. Each reconstructed prediction residue is added to its corresponding original prediction value to produce a current block of a picture. Generating the reconstructed prediction residue includes performing inverse quantization on blocks of quantized residue differences, wherein the inverse quantization reconstructs data to which uniform quantization residue differential pulse code modulation (RDPCM) has been applied and wherein the quantization is of the form:ΔXq=floor((X+αQ)/Q)

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