| 摘要 |
A graphic drawing processing system has a frame memory including a drawing data area for holding data for drawing on a display, and an offscreen area for holding source data for a specified pattern which is not displayed on the display. The system further includes a coordinate convertor for obtaining pattern data corresponding to picture elements to be drawn, based on pattern source data in the offscreen area, and a memory for storing one portion of the pattern source data in the offscreen area.
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