Patent ID: 8350826

Claim:
A capacitive touch panel device comprising: a capacitive touch panel which has sensor electrodes arranged in the x and y directions; and a sensing control unit which controls the execution of a scan sequence to measure a sensor output value that is obtained by quantifying a change in the capacitance generated between the sensor electrode mounted in the capacitive touch panel and a conductive body positioned close to the sensor electrode; wherein, the sensing control unit exercises control to: measure sensor output values, with setup performed to avoid the detection of sensitivity slope, by executing a first scan sequence on all the sensor electrodes mounted in the capacitive touch panel, if the result of the first scan sequence indicates that multiple points are touched, measure sensor output values again, with setup performed to allow the detection of sensitivity slope, by executing a second scan sequence on the sensor electrodes related to a plurality of touch position candidate coordinates derived from the multiple point touches, and identify and eliminate erroneously detected coordinates in accordance with the sensor output values measured upon the execution of the second scan sequence and with the tendency of sensitivity slope.