| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electrostatic capacity type touch sensor that can be calibrated in a short period of time taking a moment when a finger or the like of a person does not touch a touch pad. <P>SOLUTION: An absolute value of a difference (AD0-AD2) between a first output voltage AD0 and a third output voltage AD2 is compared with a first threshold Vtr1 in a step S10. When an absolute value of the difference (AD0-AD2) between the output voltages is smaller than the first threshold Vtr1, it is determined that the finger or the like of the person does not touch the touch pad, and proceeding to a step S11, it is determined which of an offset in a second output voltage AD1 and an offset in the third output voltage AD2 is smaller than the other. As a result, when the offset in the second output voltage AD1 is smaller than the offset in the third output voltage AD2, modification to the second calibration data X1 is permitted. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
