| 摘要 |
PURPOSE:To speedily and easily synthesize graphic data subjected to hide- processing and mere graphic data in a frame memory by inputting the former to a serial input port in the frame memory and the latter to an random access port in that frame. CONSTITUTION:Information on segments to be subjected to hide-processing is inputted to an operational element group 8 on a scan line basis, and the results are outputted to a buffer 12 in the frame memory 9. On the other hand, a drawn picture transfer processor 5 is connected to the random access port in the frame memory 9. Then concurrently outputted display data is stored in the buffer 11, and sequentially and serially outputted to a CRT 2 according to a shift signal that a CRT display control circuit 14 outputs. In such a way the image data subjected to hide-processing is inputted to the serial input port in the frame memory 9 and the unprocessed one to the random access port, whereby both of them can be synthesized in the frame memory 9. |
