| 摘要 |
<p>A correction sense line 1 is laid in the peripheral portion of a first sense line group S1 and a second sense line group S2, and ON/OFF means for the correction sense line 1 is provided. Moreover, the correction sense line 1 is excited in an opposite phase to the first sense line group S1. In the peripheral portion of the first sense line group S1 or the second sense line group S2, there is produced an induction signal for causing an error at the time of calculating the coordinates. This induction signal is attenuated by providing the correction sense line 1. <IMAGE></p> |
