Patent ID: 8594421

Claim:
A color correction circuit, comprising: a luminance information detection circuit configured to detect luminance information that includes a luminance histogram and average luminance information in one or more field periods or in one or more frames of an input video signal; a chromaticity histogram information detection circuit configured to detect chromaticity histogram information that includes a chromaticity histogram including a hue histogram and a chroma histogram of the video signal; a hue detection part configured to convert an RGB signal to an HSV color space and to detect a hue of the video signal from hues of the HSV color space, wherein the RGB signal is input as the video signal or obtained by converting a YCbCr signal input as the video signal; a memory configured to store matrix coefficients used for a color correction matrix operation as a look-up table; a memory control part configured to determine a color of the video signal to be corrected based on the luminance histogram and the average luminance information detected in the luminance information detection circuit, the hue histogram and the chroma histogram detected in the chromaticity histogram information detection circuit, and the hue detected in the hue detection part; and a color correction matrix operation part configured to correct a hue of the color of the video signal determined to be corrected by the color correction matrix operation using the matrix coefficients and the RGB signal before being converted to the HSV color space.