Patent · US Active

Method and apparatus for power level control of a display device

US8279214B2 · kind B2 · utility

1Cited by

3References

5Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Carlos Correa · Villingen-Schwenningen, DE
Cedric Thebault · Villingen-Schwenningen, DE
Rainer Zwing · Villingen-Schwenningen, DE

Key dates

Filing date	Nov 9, 2006
Grant date	Oct 2, 2012
Priority date	—
Expiry date	Jun 20, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG09G2360/16
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention concerns a video processing for improving the picture quality of picture which are displayed on display devices like plasma display panels and all kind of display devices based on the principle of duty cycle modulation of light emission and for reducing the average power dissipation. The basic idea behind the invention is to generate only the required amount of sustain pulses that effectively produce light and to avoid generating unnecessary sustain pulses. To this end, the video range of the input video is increased in order to be equal to a nominal range, 255 in the case of a 8-bit coding, and a power level mode with a reduced number of sustain pulses is selected to keep constant the brightness of the image. The number of sustain pulses that do not produce light is reduced.

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