Patent ID: 9654780
Date: 2017-05-16
CPC Classifications: G09G,H04N

Claim:
1. An apparatus for encoding an image data, comprising: a sub-pixel renderer 1 to convert first image data of an RGB type to second image data of an RG-BG type; a first differential pulse code modulation (DPCM) processor to generate first differential data including primary differential values corresponding to respective sub-pixels, the first DPCM processor to calculate a gray value difference from a neighboring sub-pixel for each of the sub-pixels based on the second image data; and a second DPCM processor to generate second differential data including secondary differential values corresponding respectively to green sub-pixels except a leftmost green sub-pixel, the second DPCM processor to calculate a primary differential value difference from the neighboring sub-pixel for each of the green sub-pixels except the leftmost green sub-pixel based on the first differential data, wherein the neighboring sub-pixel is adjacent to a left side of each of the sub-pixels.