Patent ID: 7492371
Filing Date: 2009-02-17
Classification: G06F,G09G

Abstract:
1. A graphics controller, comprising: a host interface for communicating with an external processor; a plurality of registers in communication with the host interface; and logic circuitry, the logic circuitry configured to periodically change coordinates of an overlay image to animate a bouncing image; the logic circuitry responding to values stored in the registers to cause display registers storing the coordinates to be updated every x number of frame refreshes, wherein the coordinates include an X coordinate indicating a current horizontal position of the overlay image and a Y coordinate indicating a current vertical position of the overlay image, wherein the registers include a ΔX value and a ΔY value, the logic circuitry periodically incrementing the X coordinate by ΔX and the Y coordinate by ΔY, wherein ΔX is multiplied by negative one when the overlay image reaches a horizontal edge of a display region of the external display, and ΔY is multiplied by negative one when the overlay image reaches a vertical edge of the display region.