| 摘要 |
PROBLEM TO BE SOLVED: To improve the operating efficiency without making memory read/ write control complicated. SOLUTION: Image data with one horizontal line in 768-pixel are written in a frame memory 6 consisting of 12 sets of IM DRAMs each consisting 512×512×4 bits so as to be bridged over two row addresses. The write is made in the high speed page mode, and pixel data not written are latched in latch circuits 43, 44 at a time of row address changeover and written at a prescribed address location corresponding to the frame memory 6 for a horizontal blanking period just after the image period.
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