| 摘要 |
<p>PURPOSE:To obtain a coordinate position detector having high using sensitivity by switching an input mode and an erase mode through pen operation. CONSTITUTION:A detecting signal A of the 1st coordinate position detecting electrode 7 is inputted to the 1st comparator 14 and one input terminal IN1 of an analog switch 16 and a detecting signal B from the 2nd coordinate position detecting electrode 8 is inputted to the 2nd comparator 15 and the other input terminal IN2. The outputs of both the comparators 14, 15 are outputted as mode switching signals C, D and also inputted to control terminals CS1, CS2 of the analog switch 16 and any one of them is selected and outputted to an amplifier 17. When a pattern or the like is drawn on paper 6 set up to a plane resisting body 18 with a writing means 9 on the 1st terminal part at the use of the input mode, the detecting signal A of the 1st electrode 7 is high and outputted as a positional signal E. At the time of the erase mode, an erasing means 10 on the 2nd end part selects the input terminal IN2 and outputs the positional signal E.</p> |
