Patent ID: 8648784

Claim:
A device for controlling a liquid crystal display, the device comprising: a luminance weighting value processor for generating a weighting value according to a luminance value of a current pixel of a current frame of a video signal and a luminance value of a previous pixel of a previous frame of the video signal; an overdrive value generator for generating an overdrive value according to a current pixel value of the current pixel and a previous pixel value of the previous pixel; an outputting unit for generating an output pixel value according to the weighting value, the overdrive value and the current pixel value; and a weighting adjusting unit, coupled between the luminance weighting value processor and the outputting unit, for adjusting the weighting value according to a predetermined factor, wherein the output pixel value is defined as: G n ′=W OD *G n — OD +(1 −W OD )* G n where G n ′ represents the output pixel value, W OD represents the adjusted weighting value, G n — OD represents the overdrive value, and G n represents the current pixel value.