| 摘要 |
PURPOSE:To provide a plotting device capable of perfoming a plotting at high speed at the time of displaying an image on a display device and its plotting method. CONSTITUTION:This device is provided with a display memory 3, a source address control part 5 controlling source addresses, a distination address control part 6 controlling distination addresses, a plotting pixel number management part 7 managing the number of plotting pixels, a color and brightness data storage part 9 storing color and brightness data, a source plane control part 11 determining which plane data of source data are to be used as shape data, a plotting data generating part 12 generating plotting data by multiplying the shape data by the color and brightness data, a memory accessing part 2 reading out source data from a source address specified by the source address control part 5 and performing plotting operations writing the source data in a source address generated by the plotting data generating part 12 by the number of times specified by the pixel number management part 7. |
