| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a capacitive touch switch having high detection accuracy of a touch panel. <P>SOLUTION: This capacitive touch sensor detects touch operation based on a change of output (sensor signals Vsn) of a plurality of electrodes. In this case, two sensor output threshold values Vsa, Vsb (a first sensor output threshold value Vsa < a second sensor output threshold value Vsb) are prepared, the electrode having the sensor signal Vsn less than the first sensor output threshold value Vsa is determined as an ON state, the electrode having a value of the sensor signal Vsn not less than the first sensor output threshold value Vsa and less than the second sensor output threshold value Vsb is determined as an OFF state when a duration Tsb of the state exceeds a second time threshold value Tbk, and the electrode is determined as the OFF state when the duration Tsb is not more than the second time threshold value Tbk. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
