| 摘要 |
PURPOSE:To improve efficiency for transferring animation data from an animation data source unit to a frame buffer through a bus. CONSTITUTION:A window identification number register 23 stores the identification numbers of the windows of animation image data previously decided corresponding to the animation data source unit 20. A register 25 stores the identification numbers of windows sent from a main processor 21. A write data control circuit 26 outputs '1' when the contents of the window identification number register 23 and the register 25 are equal, and output '0' in the other case, A video screen display position information plane memory 22 is provided with the picture element capacity in the same size as a display 1 and writes the output data of the control circuit 26 with a pixel coordinate sent from the processor as a data write address. The animation data of the pixel coordinate, for which the value of this plane memory is '1', are transferred from an animation image data source 4 to a frame buffer 2 through the bus. |
