Patent ID: 8023728

Claim:
A method of displaying a first image from a frame store to a display device at a predetermined output frame period, said first image being based on a reference image stored in an image store, the reference image being represented by a plurality of pixels and each pixel having a colour represented by pixel values which define a position within colour space, said method comprising: determining a bounded area within colour space that contains all pixel values used within the reference image, the bounded area being smaller than colour space; dividing the bounded area into a plurality of defined regions; allocating each pixel value used within said reference image to one of said defined regions in accordance with the position in colour space of said pixel value; selecting one or more areas of said reference image; selecting, for each of said selected one or more areas, one of said defined regions; identifying, for each selected area of said reference image, pixels which have a pixel value which has been allocated to said selected region; and adding said identified pixels to said frame store to update the displayed first image; wherein different areas of said reference image and regions of the bounded area are selected in succession in accordance with a predetermined sequence in time until each combination of reference image area and region of the bounded area has been selected and all pixels of said reference image thereby added to said frame store for display, said predetermined sequence in time having a duration which is longer than said predetermined output frame period.