Patent ID: 8427411

Claim:
A color signal converter that converts a three-primary-color signal to an n-color signal (n≧4), the color signal converter comprising: a first color signal generation module for generating, by subjecting the three-primary-color signal to isochromatic conversion, an m-color signal made up of m color components (m≧n) including respective color components that are equivalent in terms of color to color components of the n-color signal; a second color signal generation module for generating the color components of the n-color signal, by performing linear combination of the color components of the m-color signal; and a coefficient change module for changing coefficients of the linear combination performed by the second color signal generation module, in a case where a color saturation value of a k-color component (1≦k≦m) of the m-color signal is different from an expected value, the coefficient change module adding, to each of the color components other than the k-color component, an adjusted color saturation value worked out by multiplying the color saturation value of the k-color component by an adjustment coefficient.