| 摘要 |
PCT No. PCT/JP84/00020 Sec. 371 Date Sep. 27, 1984 Sec. 102(e) Date Sep. 27, 1984 PCT Filed Jan. 27, 1984 PCT Pub. No. WO84/02996 PCT Pub. Date Aug. 2, 1984.Display data is read out from a display memory (2) and the display data thus read out is written in the buffer memory (8). Then, in a time sharing manner relative to the writing, the display data is read out from the buffer memory (8), and a smoothing processing is carried out on the basis of the display data thus read out and the display data read out from the display memory (2).
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