Patent ID: 7852535
Filing Date: 2010-12-14
Classification: H04N

Abstract:
1. A method for converting color data, the method comprising: generating a CMYK color gamut which is extended from a CMY color gamut that consists of a cyan (C) colorant, a magenta (M) colorant, and a yellow (Y) colorant, by use of the CMY color gamut and a black (K) colorant by decreasing a lightness with respect to a lowest lightness point in the CMY color gamut and increasing a saturation range of the CMY color gamut sequentially, in steps, until the extended color gamut no longer covers the CMY color gamut; mapping input red, green, blue colors using the CMYK color gamut which is generated; converting color data of the input colors which are mapped to CMY data; and converting the CMY data which is converted from the color data of the input colors to CMYK data, wherein at least one of the generating the CMYK color gamut, the mapping the input red, green, blue colors, the converting the color data, and the converting the CMY data is performed by a processing device.