| 摘要 |
<p>PURPOSE:To prevent the oscillation type digitizer from having unnecessary oscillation. CONSTITUTION:An oscillation system consisting of a 1st oscillation element such as an X-axial loop coil, a 2nd oscillation element such as an amplifier 103, and a 3rd oscillation element such as a position indicator starts oscillating and when an oscillation signal based upon oscillation characteristic to a tablet or an oscillation signal generated when the position indicator is mounted on the tablet is inputted to a compensating circuit 106, the compensating circuit 106 removes an oscillation signal of high frequency based upon oscillation characteristic to the tablet. Consequently, oscillating operation is performed only with the oscillation signal generated when the position indicator is mounted on the tablet 1 to prevent the digitizer from generating unnecessary oscillation.</p> |
