| 摘要 |
<p>PURPOSE:To simplify the structure of a tablet and an electric circuit by accessing a ROM recorded with sine or cosine wave information sequentially and applying a signal based on the information recorded in the ROM to a plane resistor so as to utilize the information of a counter accessing the ROM as a positional signal. CONSTITUTION:When an operator uses a detector 12 to depress the 2nd plane resistor 7 of an optional point P downward, the 2nd plane resistor 7 is deformed downward and the resistor 4 of a 1st plane resistor 1 and the resistor 10 of the 2nd plane resistor 7 are brought into contact with each other. Electrodes 2, 3 of the 1st plane resistor as a sensor in such a state are made equi-potential by a switch. A distance (x) from one voltage application electrode 8 is decided by obtaining a phase difference alpha from a signal Asintheta by using the detected voltage at the optional pressing point P.</p> |
