| 摘要 |
PURPOSE:To eliminate the contention between image data and video data by separating image input data to an image data processing side and a video data thinning-out processing side. CONSTITUTION:The image input data (b) sent from an image input device 1 are transferred to an image memory 3 through an image memory control circuit 2 with an image input clock (a) and CPU image data (f) sent from a central processing unit 5. In addition, the image input data (b) is processed by an arithmetic part 4 by using the image clock (a) and an image input HSYNC signal (h) to generate thinned-out data (d) by hardware and the data are outputted to a video memory control circuit 6 to transfer display data (g) to a video memory 7. |
