A method of operating spatial sampling filters comprises detecting subpixel rendered areas, turning on a first set of spatial sampling filters for the subpixel rendered areas in response to detecting said subpixel rendered areas, detecting non-subpixel rendered areas; and turning on a second set of spatial...http://www.google.com.au/patents/US7598963?utm_source=gb-gplus-sharePatent US7598963 - Operating sub-pixel rendering filters in a display system