Patent ID: 6047335
Filing Date: 2000-04-04
Classification: G09G

Abstract:
A method of displaying data in a data processing system having a main memory, a memory controller, a video display device, and a computer; said method comprising the steps of:a) sending out, by a DMA read controller of the computer, a read request to the memory controller for reading video data stored in the main memory to be displayed on the video display device, the read request being sent out based on a demand for video data from a video processing unit of the computer, the demand indicating an offset address starting from a beginning address of a region in the main memory where the video data is current stored;b) reading out, by the DMA read controller after gaining control of a bus connecting the DMA read controller and the main memory, the requested video data from the main memory;c) transferring the requested video data from the DMA read controller to the video processing unit;d) processing, by the video processing unit, the requested video data into video picture data;e) storing the video picture data in a frame buffer using a memory control unit of the computer to determine address locations for the storing the video picture data in the frame buffer; andf) sequentially reading out the video picture data stored in the frame buffer, wherein the read out video picture data is converted by a display control unit of the computer into display signals for driving the video display device.