| 摘要 |
<p>PURPOSE:To provide the window processor mounted on an electronic notebook capable of executing an excellent window return processing without flickering on a screen even in the case of returning the screen to its original screen before a window display in a window display state wherein plural windows are displayed one over another. CONSTITUTION:Display data to be returned as to the whole screen of a display part 16 are previously saved and stored in a screen saving RAM 17 from a VRAM 15 at the time of a window display for its return object screen and at the time of returning window displays one by one display data on parts hidden behind respective windows which are stored in the window saving RAM 18 are read out and returned. At the time of batch return to the return object screen, display data of one screen stored in the screen saving RAM 17 are read out and put in the VRAM 15 for the restoration.</p> |
