Patent ID: 7916106

Claim:
An LCD driving device, comprising: a memory operable to sequentially store an image data in a frame unit; a memory controller operable to read out a previous image data corresponding to a previous frame previously stored in the memory, store a present image data corresponding to a present frame from an external source in the memory and output the previous image data and the present image data; a first converter operable to convert the present image data output from the memory controller into a first sub image data and a second sub image data having a gray scale value less than a gray scale of the first sub image data; a second converter operable to convert the previous image data output from the memory controller into a third sub image data and a fourth sub image data having a gray scale value less than a gray scale of the third sub image data; a first compensator operable to compensate the first sub image data based on a difference value between the first sub image data and the third sub image data and output a first compensated image data; a second compensator adapted to compensate the second sub image data based on a difference value between the second sub image data and the fourth sub image data and output a second compensated image data; and, an output part to control an output time of the first and second compensated image data.