Patent · US Active

Method and device for minimizing a quantization error

US8559502B2 · kind B2 · utility

1Cited by

1References

17Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Amon · Birkenfeld, DE
Michael Kapralov · Stanford, US

Key dates

Filing date	Apr 4, 2006
Grant date	Oct 15, 2013
Priority date	—
Expiry date	Oct 17, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/60
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A device minimizes a quantization error in the inverse quantization of a quantized coefficient during a compression method, the quantization error describing a difference between the quantized coefficient after inverse quantization and an associated coefficient prior to quantization. According to the method, at least one parameter that is characteristic of the compression of the quantized coefficient is selected, (at least two characteristic parameters being selected if one of the two characteristic parameters corresponds to a temporal prediction mode), a correction value is chosen based on the selected characteristic parameter(s) and inverse quantization takes place after the correction value has been added to the quantized coefficient.

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