| 摘要 |
<p>PURPOSE:To rapidly and highly efficiently execute drawing and transfer by forming a drawing area and a display area in mutually independent dual port memories and simultaneously executing drawing, transfer and display. CONSTITUTION:The titled display device has an area transfer device 24 for accessing a drawing memory 22 and a display memory 23 simultaneously and writing and transferring image data read out from any one of plural drawing areas in an optional position of a display area and a display controller 21 for accessing the display memory 23, successively rading out the image data from the display area and displaying the read data. Since the area transfer device 24 can access both the memories 22, 23 simultaneously and independently and both the memories 22, 23 are dual port memories, drawing and transfer can be simultaneously executed and transfer and display can be also simultaneously executed. Thereby, the drawing and transfer can be efficiently and rapidly executed.</p> |
