Patent ID: 7085016
Filing Date: 2006-08-01
Classification: H04N

Abstract:
1. An apparatus for dithering pixel data, comprising: a dither value generator for outputting a dither reference value in response to an N-bits pixel data and a pixel address (x,y) thereof, wherein the dither value generator includes: a dither matrix; and an array index generator for generating an array index (i, j) in response to the N-bits pixel data and the pixel address (x,y) as follows: i=(x+C) modulo n; j=(y+C) modulo n, wherein C denotes the red, green or blue color value of the pixel to be dithered and n represents the dimension of the dither matrix; and a dithering unit for generating an M-bits pixel data in response to the dither reference value and the N-bits pixel data; wherein the value N is greater than the value M.