Patent ID: 6873440
Filing Date: 2005-03-29
Classification: G06K

Abstract:
1. A rendering apparatus, comprising: an interpreter that distinguishes between a partially toned object and a fully toned object in a document; a screening module that receives the partially toned object and performs screening on the partially toned object to generate image data having multi-bit deep sub-pixel thresholds; and a threshold pattern array module that generates a threshold pattern array having multiple sub-pixel thresholds from which the screening module generates the image data having multi-bit deep sub-pixel thresholds, wherein the threshold pattern array module generates a threshold pattern array by selecting a threshold pattern array value, determining a number of sub-pixel thresholds, determining a difference (delta) which is obtained by dividing the threshold pattern array value by the number of sub-pixel thresholds, where where n is an integer from 0 to (number of sub-pixel thresholds−1).