Patent ID: 7015980

Claim:
A color temperature conversion method that converts a predetermined input color temperature to a predetermined aiming color temperature by intervening a particular color temperature, the method comprising: selecting, based on the input color temperature, a first color temperature converting factor from among a plurality of predetermined first color temperature converting factors for converting a first predetermined color temperature to the particular color temperature, wherein each of the predetermined first color temperature converting factors is in the form of a 3×3 matrix; selecting, based on the input aiming color temperature, a second color temperature converting factor from among a plurality of predetermined second color temperature converting factors for converting the particular color temperature to a second predetermined color temperature, wherein each of the predetermined second color temperature converting factors is in the form of a 3×3 matrix; and multiplying the selected first converting factor and the selected second converting factor to generate a third color temperature converting factor for converting the input color temperature to the aiming color temperature.