Patent ID: 6597373
Filing Date: 2003-07-22
Classification: G09G

Abstract:
A controller for displaying on a display device an image stored in a memory and a border region, wherein the image has a first resolution and the display device has a second resolution different from the first resolution, the controller comprising:a display engine coupled between the memory and the display device; a first timing generator which directs the display engine to output image data to display the image on the display device; one or more registers which control the first timing generator, wherein the one or more registers store data indicative of the first resolution; and a second timing generator which determines the first resolution using the data, determines the border region using the first resolution and the second resolution, and directs the display engine to display the border region on the display device and provides timing information to the display device; wherein the border region includes an X border count and a Y border count, the first resolution includes a horizontal dimension (X_image) and a vertical dimension (Y_image), the second resolution includes a horizontal dimension (X_display) and vertical dimension (Y_display), and wherein the second timing generator determines the X border count and the Y border count based on the following formulas: X border count is substantially equal to (X displayâˆ’X image) divided by 2, and Y border count is substantially equal to (Y displayâˆ’Y image) divided by 2.