Patent ID: 7312779

Claim:
A method for color calibrating a transmissive display system comprising the steps of: applying signal values that select a target color in a look-up table in said display system to establish color on a screen of said display system; noting chromaticity of color displayed on said screen; determining an evaluation parameter for said color utilizing said chromaticity; determining a target evaluation parameter utilizing chromaticity of said target color; comparing said color evaluation parameter to said target color evaluation parameter to establish a parameter difference value: comparing said parameter difference value to said specified tolerance range; and creating a tristimulus table having tristimulus values for said primary colors for each signal value over an entire signal value range; determining backlight tristimulus values; subtracting backlight tristimulus values from corresponding tristimulus values in said tristimulus table to provide a corrected table; subtracting said backlight tristimulus values from corresponding target color tristimulus values to provide corrected target color tristimulus values; utilizing said corrected table and said corrected target color tristimulus values to obtain estimated primary color luminance values corresponding to said target color, thereby providing modified signals; establishing an evaluation parameter for color displayed in response to said modified signal values; and comparing said evaluation parameter for said response color to said target color evaluation parameter to determine if said response color is within said specified tolerance range of said target color, thereby providing a parameter difference within said tolerance range.