Patent ID: 7408558

Claim:
A method for displaying a color image comprising: a) providing a color image display apparatus having at least three narrow-band emissive light sources that define a display color gamut; b) accepting input color image data values that are defined within an original color gamut that is smaller in area than the display color gamut; c) transforming the input color image data values into display color gamut data values having an expanded chromaticity range, wherein at least a portion of the expanded chromaticity range lies outside the original color gamut, and wherein at least a portion of the display color gamut lies outside the expanded chromaticity range; d) providing the display color gamut data values to the color image display apparatus for forming the color image; e) wherein, for an image pixel on the display apparatus, a hue associated with the input image data value is substantially the same as a hue of the displayed color generated by the color image display apparatus with the corresponding display color gamut data value; f) wherein, for a given input image data value, the hue of the displayed color generated by the color image display apparatus with the corresponding display color gamut data value is within at least a standard psychometric hue difference of +/−5 of the hue given by the input color image data value.