| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that it is difficult to detect positions and pressures of plural touch points with high accuracy when multi-touch input by touching plural points is performed to a touch panel and a touch pad.SOLUTION: A driving unit 10 successively selects one driving line from plural driving lines of a touch input device and applies driving voltage to the selected driving line. A voltage detection unit 20 successively selects one sensing line from plural sensing lines and detects output voltage of the selected sensing line. A calculation/control unit 40 obtains a resistance value of a pressure-sensitive resistor provided at a position where the selected driving line and the selected sensing line intersect with each other, on the basis of the driving voltage and the output voltage. The driving unit 10 applies bias voltage smaller than 0 or the driving voltage to driving lines other than the selected driving line. |
