Patent ID: 8378959

Claim:
A method of dimming a light source based on an image signal input from an external device, the method comprising: setting a plurality of light-emitting parts of a light-emitting panel to a plurality of first dimming blocks corresponding to a first color class of the image signal or a plurality of second dimming blocks corresponding to a second color class of the image signal; calculating a plurality of red, green, and blue (RGB) representative values from RGB values from the image signal corresponding to each of the first and second dimming blocks; calculating a total-multiplication value by using the RGB representative values corresponding to the first dimming blocks and the RGB representative values corresponding to one or more second dimming blocks adjacent to the first dimming blocks; comparing the total-multiplication value with a setting value; controlling at least one of the first dimming blocks to be operated as a second dimming operation, if the total-multiplication value is greater than the setting value; and controlling at least one of the first dimming blocks to be operated as a first dimming operation, if the total-multiplication value is smaller than or equal to the setting value.