Patent ID: 8194065

Claim:
A system, comprising: a first register for storing at least one first refresh parameter in association with a first refresh rate; a second register for storing at least one second refresh parameter in association with a second refresh rate; and logic in communication with the first register and the second register, the logic for selecting the first refresh parameter stored in the first register or the second refresh parameter stored in the second register, for reducing artifacts resulting from a change from the first refresh rate and the second refresh rate; wherein the system is operable such that a request to change from the first refresh rate to the second refresh rate occurs in an active period during which pixels are being written to a display device, for allowing time for an update to propagate to timing registers and subsequently propagate to the display device before a next vertical blanking period for reducing the artifacts resulting from the change from the first refresh rate and the second refresh rate; wherein the system is operable such that the change from the first refresh rate to the second refresh rate occurs in the active period in which the request to change occurred and before the next vertical blanking period.