Patent · US Expired

Display device with improved representation of the shades of grey

US7259773B2 · kind B2 · utility

0Cited by

9References

6Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Gerhard Spekowius · Straelen, DE
Harald Reiter · Aachen, DE
Martin Weibrecht · Aachen, DE
Peter Quadflieg · Aachen, DE

Key dates

Filing date	Jul 9, 2003
Grant date	Aug 21, 2007
Priority date	—
Expiry date	Dec 25, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG09G2360/144
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a display device for rendering gray tone images on a monitor (31) controlled by s electron rays, wherein a correction unit (33) is provided for generating s output image signals As, which comprise gray tone values forming part of a set K of correction gray tones, from an image signal (34) which comprises gray tone values forming part of a set M of original gray tones (23), and the s output image signals As, after a D/A conversion, are fed each to one electron ray for a brightness-corrected rendering of a gray tone in one pixel of the monitor (31) for the purpose of adapting the brightness distribution of the monitor to the optimum perceptional brightness distribution.

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