Patent ID: 7394566

Claim:
A method of adjusting a non-black primary color value comprising: determining a gray component of the non-black primary color value that contributes to a gray color; determining a secondary color component of the non-black primary color value that contributes to a secondary color; determining a primary component of the non-black primary color value that does not contribute to the gray color or the secondary color; determining a gray balancing contribution using a one-dimensional gray balancing related primary color look-up table and the gray component, wherein the primary color value is used as an index to the one-dimensional gray balancing related primary color look-up table; determining a secondary color contribution using a one-dimensional secondary color related primary color look-up table and the secondary color component, wherein the primary color value is used as an index to the one-dimensional secondary color related primary color look-up table; determining a primary color contribution using a one-dimensional primary component related primary color look-up table and the primary component, wherein the primary color value is used as an index to the one-dimensional primary component related primary color look-up table; and summing the gray contribution, the secondary color contribution and the primary color contribution.