Patent ID: 7518752

Claim:
A system for bi-chromatic document rendering comprising: input means adapted for receiving electronic document data defining an image, which electronic document data includes color data having values defined in a selected, multidimensional color space, the color data including luminance data and saturation data; mapping means adapted for mapping color data to a selected color component of the multidimensional color space so as to generate bi-chromatic data corresponding to a bi-chromatic representation of the image, which bi-chromatic representation includes a black component and a single significant, non-black hue component, and which bi-chromatic representation substantially maintains the luminance data and saturation data of the received electronic document data, the mapping means including, means adapted for receiving angle data corresponding to an angle, means adapted for calculating updated saturation data in accordance with received angle data, means adapted for calculating hue value data in accordance with the non-black hue component and the received angle data, and means adapted for generating the bi-chromatic data in accordance with the updated saturation data, the hue value, and the luminance data; and output means adapted for communicating generated bi-chromatic data to an associated document rendering device.