Patent · US Expired

Method and apparatus for processing video pictures, in particular for large area flicker effect reduction

US6714250B1 · kind B1 · utility

11Cited by

11References

16Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Carlos Correa · Villingen-Schwenningen, DE
Sebastien Weitbruch · Kirchberg, DE
Rainer Zwing · Villingen-Schwenningen, DE
Gangolf Hirtz · Niedereschach, DE

Key dates

Filing date	Jul 20, 1999
Grant date	Mar 30, 2004
Priority date	—
Expiry date	Jul 20, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S348/91
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Plasma Display Panels (PDP) are becoming more and more interesting for TV technology. Due to the larger size of PDPs, with larger viewing angle the large area flicker effect will become more serious in the future, in particular when handling 50 Hz video standards. This invention proposes a different sub-field organisation, with different coding, which reduces large area flicker artefact, and which includes grouping of sub-fields in two sub-field groups wherein the two sub-field groups are identical in terms of the most significant sub-fields and different in terms of the least significant sub-fields, and a sub-field coding process that distributes luminance weight symmetrically over the two sub-field groups so as to minimize the large area flicker luminance component.

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