Patent ID: 8432337
Filing Date: 2013-04-30
Classification: G09G

Abstract:
1. A method of controlling luminance of a light source, the method comprising: generating red, green, blue and white data using red, green and blue data; applying color weights to the red, the green, the blue and the white data according to contribution to luminance by each of the red, the green, the blue and the white data to generate pixel luminance data; setting a luminance level of the light source having a plurality of light emitting blocks based on the pixel luminance data; determining local information on a pure color block having pure and saturated color data in a frame image by using the pixel luminance data, wherein the local information includes one or more of presence, location, and size of the pure color block; and adjusting the luminance level of the plurality of light emitting blocks based on the local information on the pure color block.