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. 19, 2013
Filed:
Nov. 20, 2007
Kazuto Kimura, Kanagawa, JP;
Masatake Hayashi, Kanagawa, JP;
Tomio Aoki, Kanagawa, JP;
Yoshihiro Katsu, Kanagawa, JP;
Mitsuyasu Asano, Tokyo, JP;
Kazuto Kimura, Kanagawa, JP;
Masatake Hayashi, Kanagawa, JP;
Tomio Aoki, Kanagawa, JP;
Yoshihiro Katsu, Kanagawa, JP;
Mitsuyasu Asano, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed is a backlight control apparatus for controlling a backlight used in a liquid crystal display, the backlight having a lighting area that includes a plurality of blocks in each of which a backlight luminance is individually allowed to change. The apparatus includes a backlight control unit that calculates the backlight luminance of each block so that the absolute value of the difference between a backlight lighting ratio and 1 is at or below a first value, and controls the backlight so as to yield the calculated backlight luminances of the respective blocks, the backlight lighting ratio being the ratio between backlight set values of neighboring blocks.