The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2005
Filed:
Apr. 18, 2002
Cédric Thébault, Sevran, FR;
Carlos Correa, Villingen-Schwenningen, DE;
Sébastien Weitbruch, Mönchweiler, DE;
Cédric Thébault, Sevran, FR;
Carlos Correa, Villingen-Schwenningen, DE;
Sébastien Weitbruch, Mönchweiler, DE;
Thomson Licensing S.A., Boulogne-Billancourt, FR;
Abstract
A method and apparatus for processing video pictures for dynamic false contour effect compensation is provided wherein the video picture consists of pixels having at least one color component (RGB) the color component values being digitally coded with a digital code word, hereinafter called sub-field code word (SF-R, SF-G, F-B). To each bit of a sub-field code word (SF-R, SF-G, SF-B) a certain duration is assigned hereinafter called a sub-field, during which a color component of the pixel can be activated for light generation. The digital code words have n bits, characterized in that among a set p possible video levels for the at least one color component (RGB) a sub-set of m video levels with n<m<p is selected, which is used for light generation. The m values are selected according to the rule that the temporal center of gravity (CGCGCG) for the light generation of the corresponding sub-field code words grow continuously with the video level, apart from possible exceptions in the low video level range up to a first predefined limit and/or in the high video level range from a second predefined limit on.