Patent ID: 7057671

Claim:
A method for use in a system in which a signal is presented to a display, the signal representing the values of components representing an image in a first image-representation space, the method being carried out in response to an indication that the value of at least a particular one of said components would be outside of a predetermined allowed range when presented to said display, the method comprising modifying the values of at least one but less than all of the components that represent said image in a second image-representation space, said modifying being such as to ensure that if said image were to be converted from said second image-representation space to said first image-representation space, said particular component would be within said allowed range, wherein said image is comprised of a plurality of pixels, wherein each said pixel is represented by a first set of component values in said first image-representation space and by a second set of component values in said second image-representation space, wherein the first image-representation space is a primary color space, wherein the second image-representation space is a luminance-chrominance space, wherein said primary color space is RGB space in which each pixel is represented by the values of a red component, a green component and a blue component, and wherein in said luminance-chrominance space each said pixel is represented by the values of a luminance component Y and at least one chrominance component.