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:
Aug. 06, 2013
Filed:
Feb. 11, 2011
Hideaki Yui, Machida, JP;
Hideaki Yui, Machida, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image display apparatus of the present invention includes: a display panel; a storage unit that stores a plurality of correction values which are used for correction processing for decreasing brightness variation; a correction unit; and a control unit, wherein the control unit divides the display panel into a plurality of sub-areas, calculates, for each sub-area, a select block gradation value, and executes, for each sub-area, a control to read correction values, which are used for calculating a correction value corresponding to the select block gradation value, out of the plurality of correction values, using the correction unit, and the correction unit calculates, for each sub-area, a correction value corresponding to the select block gradation value using the read correction values, and converts gradation values of video signals in the sub-area using the calculated correction value.