| 摘要 |
<p>PURPOSE:To decrease the number of light spot of a CRT and to reduce the fatigue of eyes by controlling a display means to change the overlap relation of processing areas when plural picture processing areas are displayed with overlap on each other and displaying a screen with an OR. CONSTITUTION:A main memory 11, a disk 15 storing the picture information, a CRT12 and a pointing device PD14 are connected to a microprocessor MPU10 which controls totally a picture processor. A function part 9 of the windows of the picture processor includes a priority down function 9-1 showing the priority, a negative-positive inverting function 9-1 which performs the white-black inversion within the window and a transparent function 9-3. Each of these functions 9-1-9-3 is indicated by the PD14, and the states of functions are discriminated by the MPU10. Then the luminance of the picture processing area is inverted according to the function 9-2. This decreases the number of light spots and therefore reduces the load of eyes.</p> |
