Patent ID: 7024034

Claim:
A color temperature conversion system, comprising: an XYZ conversion unit for converting an RGB signal of input image data into an XYZ value in a CIE coordinate system; a chroma calculating unit for calculating X and Y coordinate values of a pixel corresponding to the converted XYZ value; an offset compensate unit for compensating the X coordinate value calculated by the chroma calculating unit based on an X coordinate value difference and a Y coordinate value difference of a color temperature on a white point line of the CIE coordinate system and an actual color temperature of the image data, when the color temperature is calculated based on the calculated X coordinate value; a color temperature calculating unit for calculating the color temperature of the image data that is inputted based on the compensated X coordinate value; and a color temperature conversion unit for converting the color temperature calculated by the color temperature calculating unit into a predetermined color temperature and outputting the converted predetermined color temperature.