| 摘要 |
<p>PURPOSE:To detect quickly a desired window with deletion of undesired windows and to obtain easy-to-see pictures, by applying an OR to display plural independent picture processing areas on a screen with superposition on each other. CONSTITUTION:A window buffer 2 is used as a work memory for state and processing of each window by a main memory 1 of a picture processor. Then the image of each window is stored in the buffer 2. While a screen operating processor 3 performs control to draw patterns, characters, etc. to each buffer 2. Then the up-down relation of the window is detected by a picture synthesization video control 4, and buffers 2 are synthesized and stored in a graphic RAM to be displayed on a CRT7. At the same time, an operator operates a keyboard 5 for input of each processing information as well as the operations of windows. A main processor 6 controls the operations of the memory 1, the buffer 2, the processor 3 and the keyboard 5 respectively. Then a desired window is detected quickly together with deletion of undesired windows.</p> |
