Patent Document ID: 8681382
Application ID: 13288873
Patent Status: 1

Claim One:
1. A method of producing halftone outputs corresponding to a pixel of a contone image, wherein the pixel has (i) a X coordinate and (ii) a Y coordinate in an X-Y coordinate system within each color plane of multiple color planes of the contone image, and wherein the pixel has an intensity in each of the multiple color planes of the contone image, the method comprising: addressing threshold logic with (i) the X coordinate and (ii) the Y coordinate to determine an intensity threshold value for each color plane of the multiple color planes, wherein the threshold logic comprises a threshold matrix addressable by the X-Y coordinate system, and wherein traversing across the threshold matrix in a sequence of X coordinates and/or Y coordinates that form a line or curve in the X-Y coordinate system produces an irregular or cyclic sequence of intensity threshold values; accumulating error in previously produced halftone outputs for each color plane; for a given color plane, comparing (i) the intensity and (ii) the accumulated error to the determined intensity threshold value to determine a halftone output corresponding to the pixel for the given color plane, wherein the halftone output corresponding to the pixel for the given color plane is based on the comparing; and producing, via a print controller, the halftone outputs corresponding to the pixel determined for each color plane.