Patent ID: RE41527

Claim:
For use in a method for editing color data wherein original CMYK data is converted to RGB color data and the RGB color data is edited to provide modified RGB color data, a method for converting modified RGB color data to modified CMYK color data, the method comprising: providing original CMYK data; and utilizing at least a portion of the original CMYK color data for converting modified RGB color data to modified CMYK color data; wherein said utilizing comprises constructing an RGB-to-CMYK conversion table that contains a plurality of RGB table entries, and said constructing an RGB-to-CMYK conversion table includes, transforming at least a portion of the original CMYK data to RGB data; locating, for at least one of the plurality of RGB table entries, candidate CMYK data, from the original CMYK data, which transforms into RGB data in proximity to the RGB table entries; and associating with at least one of the plurality of RGB table entries corresponding CMYK color data, based upon the candidate CMYK data.