Patent ID: 7414673

Claim:
A method for correcting nonlinear color mixing errors, and said method letting a color display device incorporate a virtual material quantity concept and use at least one set of predetermined virtual primary colors to analyze mixed color signals displayed on said color display device and establish corresponding material characteristic functions between color control signal values of the mixed color signals and corresponding virtual control signal values of the virtual primary colors, and consequently establish nonlinear correction functions between a series of known control signal values corresponding to target virtual color signal values of said color display device, so that when said color display device performs a video color conversion, said control signal values actually entered into said color display device are corrected to corresponding target control signal values for allowing said color display device to display desired color signal values, wherein said color display device calculates said corresponding virtual control signal values by said virtual primary colors when mixing another series of target color signal values, and said virtual control signal values are brought into said material characteristic functions, so that target control signal values required for an input when said color display device displays said desired color signal values are calculated by means of inverse functions.