| 摘要 |
<p>A touch sensor comes, when in a predetermined voltage-applied state, into an operation state detectable state for detecting the operation state. A touch sensor control unit raises, when it detects the start authorizing request of the touch sensor in a state of no applied voltage, the voltage gradually to a predetermined voltage value, and performs a predetermined calibration to make a shift to the operation state detectable state. When the control unit detects a start inhibit request of the touch sensor in the operation state detectable state, the control unit lowers the voltage gradually to the state of no applied thereby to make the shift to an operation state undetectable state, in which the detection of the operation state of the touch sensor cannot be made. In case the control unit detects the start authorizing request during the shift to the operation state undetectable state, the control unit makes the shift to the operation state detectable state after the operation to make the shift to the operation state undetectable state was ended.</p> |
