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. 18, 2014
Filed:
Apr. 28, 2010
Nami Nakano, Tokyo, JP;
Shuichi Kagawa, Tokyo, JP;
Nami Nakano, Tokyo, JP;
Shuichi Kagawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
There are provided a light source () having a plurality of light emitters, each of the light emitters, whose light-emission period is controlled separately, emitting one color of a plurality of colors; an image signal analyzer for analyzing an input image data, and determining a timing of light emission for each light emitter; a light source controller () for controlling the light-emission period for the light source based on the light-emission timing for each light emitter, such that the light-emission period is not shorter than a light-emission period of a predetermined minimum time length light-emission period; a light detector () for detecting the light emitted in the light-emission period of the minimum time length, and outputting the average light-emission peak values (Ir, Ig, Ib); and a peak value corrector () for generating correction values (d_Ir, d_Ig, d_Ib) for controlling each of the average light-emission peak values (Ir, Ig, Ib) to become equal to corresponding one in the reference peak values (tIr, tIg, tIb) stored in a memory (). Even when the light-emission period is changed according to the input image, the color balance of the image is maintained constant.