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:
May. 23, 2006
Filed:
Apr. 18, 2002
Kentaro Takakura, Takatsuki, JP;
Toshiya Fujii, Otsu, JP;
Hiroyoshi Komobuchi, Kyoto, JP;
Yasuhiro Morinaka, Osaka, JP;
Kazuyuki Inokuma, Yawata, JP;
Kentaro Takakura, Takatsuki, JP;
Toshiya Fujii, Otsu, JP;
Hiroyoshi Komobuchi, Kyoto, JP;
Yasuhiro Morinaka, Osaka, JP;
Kazuyuki Inokuma, Yawata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Gray level data of boundary pixels that are adjacent to a block boundary in a photoelectric conversion section is stored. Then, a cumulative histogram regarding the number of pixels for different gray levels is produced based on the stored gray level data separately for each block, and a data table representing the correspondence between each gray level before correction and that after correction for the block to be corrected is produced so as to reduce the difference between the cumulative histograms. The data table is stored in a correction data RAM. By using the data table, the outputs of the block to be corrected are non-linearly corrected for different gray levels.