Patent ID: 9697780
Date: 2017-07-04
CPC Classifications: G09G

Claim:
1. A liquid crystal display (LCD), comprising: a data source, for generating N-bit pixel data, N being a positive integer; a digital gamma correction unit, coupled to the data source, for performing digital gamma correction on the pixel data to generate (N+M)-bit digital gamma correction pixel data whose mantissa is the lowest K bits of the (N+M) bits, K and M being positive integers; an image-dithering unit, coupled to the digital gamma correction unit, for performing image-dithering on the digital gamma correction pixel data to generate a plurality of (N+M−K)-bit dithering compensation pixel data in consecutive frames wherein in generating the (N+M−K)-bit dithering compensation pixel data in the consecutive frames, the K-bit mantissa is removed from the (N+M)-bit digital gamma correction pixel data and added to the (N+M−K)-bit dithering compensation pixel data of at least one frame of the consecutive frames for compensating the plurality of (N+M−K)-bit dithering compensation pixel data of the consecutive frames; and a converter, coupled to the image-dithering unit, for converting the dithering compensation pixel data into an output image, wherein a bit number of the converter is lower than a bit number of the digital gamma correction unit.