| 摘要 |
<p>PURPOSE:To smoothly move a cursor with simple configuration by comparing a display position with a cursor display position, reading cursor pattern data when the cursor display position is judged, synthesizing the cursor pattern data with display data and outputting the synthesized data. CONSTITUTION:When the position of the displayed cursor is changed, the position data are outputted through a CPU 16, inputted to an X register 5 and a Y register 6 and held. The display position on a display 20 is compared with the cursor display position and it is judged whether the position is the cursor display position or not. When the position is judged as the cursor display position, the cursor pattern data and display data loaded from a display data memory 11 to a shift register 14 for cursor data and a shift register 13 for display data respectively are inputted to a synthesizing circuit 15, synthesized by the synthesizing circuit 15 and outputted to the display 20 as video signals.</p> |
