| 摘要 |
<p>PURPOSE:To prevent the oscilltion system of the oscillation type digitizer from oscillating unnecessarily. CONSTITUTION:The oscillation system consisting of a 1st oscilltion 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 2 starts oscillating and when a signal whose level exceeds a blind sector band is inputted to a compensating circuit 106, the compensating circuit generates an output signal, but when a signal whose level is below the blind sector band is inputted to the compensating circuit 106, the output signal is not generated. For the purpose, the blind sector band is set within a range of noise level and the oscillation system is prevented from oscillating unnecessarily owing to a noise.</p> |
