Patent ID: 7885457
Filing Date: 2011-02-08
Classification: G09G

Abstract:
1. An image processing device for displaying image data that is represented by a collection of image elements, the image processing device comprising: a plurality of pixels corresponding to the collection of image elements, each pixel comprising a plurality of sub-pixels, each sub-pixel comprising white particles, black particles and a colored layer and displaying one of white, black or a color of the colored layer, by moving the white particles and the black particles within the sub-pixel, wherein when the sub-pixel is displaying one of white, black or the color other than white or black, the other colors are not displayed; a judgment component which, for each element of the image data judges whether the image element is a chromatic color or a non-chromatic color; a selection component which, when the image element is judged to be non-chromatic by the judgment component, selects a pre-specified black-and-white sub-pixel set for the sub-pixels of the pixel that correspond to the image element in accordance with a gray level of the non-chromatic color of the image element; a conversion component which, when the image element is judged to be chromatic by the judgment component, converts the sub-pixels of the pixel that correspond to the image element to a sub-pixel set of black and the color other than white and black based on the chromatic color of the image element in accordance with a pre-specified condition; a replacement component which, within a single pixel or a pre-specified sub-pixel group that results from the image element that is judged to be chromatic by the judgment component and converted to a sub-pixel set of black and the color other than white and black by the conversion component, replaces each incidence of a pre-specified sub-pixel set of colors with a pre-specified black-and-white sub-pixel set, wherein the replacement component replaces a sub-pixel set of {red, green, blue} with a black-and-white sub-pixel set of one of {white, white, white}, {white, white, black}, {white, black, black} and {black, black, black}; and a reorder component, which reorders the sub-pixel set for the sub-pixels of the pixels corresponding to the image element determined to be either chromatic or non-chromatic such that the surface area ratios of white, black, red, green and blue do not change, wherein processing of each component is performed by a processor.