Patent ID: 8194019

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; and a second color signal generation module for generating n-color components of the n-color signal, by performing linear combination of all of the m-color components of the m-color signal, the linear combination of all of the m-color components of the m-color signal including, allocating the color components of the m-color signal, which are equivalent in terms of color to color components of the n-color signal, as corresponding color components of the n-color signal, and allocating redundant ones of the m-color components to suitable color components of the n-color signal, the redundant ones of the m-color components being different from the color components of the m-color signal, which are equivalent in terms of color to color components of the n-color signal, wherein in the color components of the m-color signal, at most three color components are selected in accordance with the three-primary-color signal.