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:
Feb. 05, 2013
Filed:
Feb. 02, 2010
Chun-ho Chen, Changhua County, TW;
Shih-hsun Chien, Changhua County, TW;
Fang-cheng Lin, Taichung County, TW;
Yi-pai Huang, Chiayi, TW;
Han-ping Shieh, Hsinchu, TW;
Wen-chih Tai, Hsinchu County, TW;
Shian-jun Chiou, Taipei, TW;
Chun-Ho Chen, Changhua County, TW;
Shih-Hsun Chien, Changhua County, TW;
Fang-Cheng Lin, Taichung County, TW;
Yi-Pai Huang, Chiayi, TW;
Han-Ping Shieh, Hsinchu, TW;
Wen-Chih Tai, Hsinchu County, TW;
Shian-Jun Chiou, Taipei, TW;
Chunghwa Picture Tubes, Ltd., Taoyuan, TW;
Abstract
An adaptive feedback control method of a field sequential color display includes converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field (D-field); performing sampling; performing a pixel by pixel sum operation for each separated color through color gamut conversion to obtain a color difference sum; performing a feedback control at a bit precision to obtain a minimum color difference sum; and then performing a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight gray-scale value of the input image; or dividing the input image into a plurality of blocks; performing feedback control operations; obtaining a minimum sum in each block to serve as an optical backlight value, thereby reducing a CBU phenomenon, and minimizing or controlling the generated CBUs to reduce the operation loads.