Patent ID: 7629970
Filing Date: 2009-12-08
Classification: G09G

Abstract:
1. An image processing circuit for a liquid crystal display performing overdrive processing, the image processing circuit comprising: a data compressor for compressing the gray-scale of image data in the direction of medium gray-scale with a predetermined data compression ratio and outputting compressed data; a pseudo-gray-scale processor for performing pseudo-gray-scale processing on said compressed data and outputting pseudo-gray-scale image data having the same number of gray-scale as the number of gray-scale of said image data; and an overdrive processor for setting the voltage difference between the highest gray-scale and the lowest gray-scale of said pseudo-gray-scale image data to be greater than the voltage difference between the highest gray-scale and the lowest gray-scale of said compressed data, assigning a new voltage in the region of the gray-scale difference between said image data and said compressed data and utilizing the new voltage for overdriving processing.