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:
Mar. 25, 2014
Filed:
Mar. 26, 2010
Katsuya Otoi, Osaka, JP;
Kohji Fujiwara, Osaka, JP;
Katsuteru Hashimoto, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An image display device which performs area-active drive suppresses occurrence of flickering that is caused when displaying dynamic images due to the emission luminance of each area being determined on the basis of a maximum or mean value of pixel luminances within that area. An emission luminance calculation section () divides an input image () into a plurality of areas, and obtains luminances upon emission of LEDs (first emission luminances) () in the areas. A maximum luminance position eccentricity coefficient calculation section () obtains maximum luminance position eccentricity coefficients () indicating maximum luminance positions in the areas. An emission luminance correction section () corrects the first emission luminances () on the basis of the maximum luminance position eccentricity coefficients () and contribution ratios () stored in an LED filter (). At this time, luminances of areas positioned in the same direction as the maximum luminance positions are set to be relatively high, and luminances of areas positioned in the opposite direction to the maximum luminance positions are set to be relatively low.