Patent ID: 6774903
Filing Date: 2004-08-10
Classification: G06T

Abstract:
A system for arbitrating the use of a memory between a graphics system and a host interface to minimize visible artifacts on a display screen by reducing pixel sparkle caused by a processor accessing a look-up table during generation of video, said memory for receiving an input signal and for retrieving a signal corresponding thereto; the system comprising:a comparator for comparing two successive display raster input signals from said graphics system, the two successive display raster input signals corresponding to two successive display elements, and determining matching input signals; arbitration logic for receiving an operation signal requiring a memory access by said host interface and for staying said memory access until said comparator determines a match of said two successive input signals; and, a hold register for receiving said retrieved signal; whereby said hold register stores said retrieved signal for a predetermined duration when a match has been determined by said comparator.