| 摘要 |
<p>PURPOSE:To attain the multi-window control which is high in the freedom degree and can be displayed at a high speed by changing the display position, size, display contents, and further, display priority sequence at an overlapping part for a window only by changing the setting contents of a register. CONSTITUTION:A detecting signal outputted from respective window control circuits WND1-WNDn is supplied to a window display priority designating circuit PRT to decide which window priority is the best when plural windows are overlapped. When a window display priority designating circuit PRT receives the detecting signal of the starting of the display from respective window control circuits WND1-WNDn, an arithmetic starting signal STi is outputted to an address arithmetic part WALi(i=1-n) corresponding to the window. In the PRT, a priority designating register to set the priority of respective windows is provided, and the window is controlled in accordance with the priority set arbitrarily to the register.</p> |
