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

摘要

signal; a coordinate storing unit for storing a predetermined coordinate consisting of the brightness and chroma with respect to a color categorized in accordance with a predetermined level; a color gamut determining unit for determining a color gamut of a display for displaying the input RGB color signal; and a signal processing unit for digitalizing the input RGB color signal within the determined color gamut. The color gamut determining unit extracts from the coordinate storing unit the coordinate corresponding to the calculated hue, and determines the range of displayable brightness and chroma based on the calculated brightness and the chroma. As a result, color gamut for color signal processing can be efficiently stored and utilized.] 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.