| 摘要 |
<p>PURPOSE:To improve efficiency on an MPU side by providing a window control block every window, storing the position of the window and an overlap display position, obtaining a storage position and the display position from the window control block and outputting them to a display controller. CONSTITUTION:If an application program 11 requests to write an image on a prescribed window, a window driver 12 obtains data on the position of the window from the window control block 13, and outputs the position data and image data to the display controller 14. If the application program 11 requests to display a multiwindow picture, the window driver 12 obtains a position where it overlaps and displays the window position of a window picture and a display picture, both of which the display request specifies, from the window control block 13, and outputs them to the display controller 14.</p> |
