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:
Dec. 29, 2009
Filed:
Aug. 08, 2002
Koichiro Ishigami, Kanagawa, JP;
Koichiro Ishigami, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed is a picture signal processing method for outputting a color picture. In encoding input picture data YCbCr into picture data for printing in a YCC picture formulating unit (), chromaticity Cb, Cr are processed non-linear conversion processing by a non-linear function f(c), with the luminance Y remaining unaffected, to generate picture data for printing Ycb'Cr′. In a cmyk converter, the picture data for printing Ycb′Cr′, generated by the YCC picture formulating unit (), are processed non-linear conversion processing by an inverse function f′(c) of the non-linear function f(c) to perform color space conversion processing matched to the color space of an output device. This converts the picture data for printing Ycb′Cr′ into picture data for output printing cmyk to improve color reproducing quality by controlling the encoding density locally in a wide color gamut.