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:
Jul. 01, 2008
Filed:
Oct. 19, 2004
Shingo Kida, Kawasaki, JP;
Tomoaki Uchida, Noda, JP;
Shingo Kida, Kawasaki, JP;
Tomoaki Uchida, Noda, JP;
Victor Company of Japan, Ltd., Kanagawa-Ken, JP;
Abstract
An input video signal is corrected based on a gradation correction curve. Generated first is histogram data which indicates distribution of each of a plurality of levels at which a luminance signal component of the input video signal is divided from the lowest to the highest luminance level per specific unit of image. Produced next is at least a first gain based on the distribution of the histogram data. At least the first gain and the histogram data are processed to produce a plural number of data for a gradation correction curve. The gradation correction curve is generated based on the plural number of data. The input video signal is then corrected based on the gradation correction curve.