Color signal processing device capable of storing a color gamut efficiently and a method using the same

摘要

A color signal processing device and method includes a calculating unit, a coordinate storing unit, a color gamut determining unit, and a signal processing unit. The calculating unit calculates brightness, chroma, and hue of an input RGB color signal. The coordinate storing unit stores a predetermined coordinate having the brightness and the chroma with respect to a color categorized in accordance with a predetermined level. The color gamut determining unit determines a color gamut to display the input RGB color signal. The signal processing unit digitizes the input RGB color signal within the determined color gamut. The color gamut determining unit extracts from the coordinate storing unit a coordinate corresponding to the calculated hue, and determines a range of displayable brightness and chroma based on the calculated brightness and the chroma, and the extracted coordinate.