Patent ID: 8542244

Claim:
A method for displaying images in a multiprimary display system using N colors, comprising: receiving a video input signal representation of pixel intensity and hue using M-dimensional color vectors, where M<N and M and N are positive intergers; determining an input gray scale weighting of the input signal M-dimensional color vectors; converting the input signal M-dimensional color vectors into output signal N-dimensional color vectors, including: if the determined input gray scale weighting is less than a given threshold, converting the input signal M-dimensional color vectors into the output signal N-dimensional color vectors using output signal weightings for N-K of the N colors, where K>=1 and (N-K)>=M, with the output signal weightings of K of the N colors set to zero; and if the determined input gray scale weighting is greater than the given threshold, converting the input signal M-dimensional color vectors into the output signal N-dimensional color vectors using output signal weightings for all of the N colors; and displaying the image in the display system with the N colors using the output signal N-dimensional color vectors with the N-K and N output signal weightings.