Patent ID: 7365757
Filing Date: 2008-04-29
Classification: G09G

Abstract:
1. A video graphics display engine comprising: a video scaler adapted to receive a video data stream in a first format, wherein the video scaler scales video images in the video data stream based on a ratio between the video images in the first format and an output video image to produce a scaled video stream; a graphics scaler adapted to receive a graphics data stream in a second format, wherein the graphics scaler scales graphics images in the graphics data stream based on a ratio between the graphics images in the second format and an output graphics image to produce a scaled graphics stream; a merging block operably coupled to the video scaler and the graphics scaler, wherein the merging block combines the scaled video stream and the scaled graphics stream to produce a video graphics output stream; and a single frame buffer operably coupled to the graphics scaler and to the video scaler, the single frame buffer further comprises a first memory block and a second memory block, wherein the stream of video data is fetched from the first memory block and the stream of graphics data is fetched from the second memory block, wherein the merging block further comprises circuitry which configures a pixel rate of the video graphics output stream to produce a preferred video scaling ratio, wherein the preferred video scaling ratio is based on the ratio between the video images in the first format and the output video image.