Patent ID: 8730205

Claim:
A touch panel input device, comprising: two resistive films which are arranged to face each other with a minute gap therebetween; a first electrode pair formed by electrodes provided at the edges of one of the resistive films that face each other; a second electrode pair formed by electrodes provided at the edges of the other one of the resistive films that face each other and extend in directions perpendicular to the first electrode pair; and circuitry configured to: apply voltages between the first electrode pair and between the second electrode pair; measure divided voltages which are divided at two touch points with respect to the first electrode pair and the second electrode pair when the resistive films are caused to contact each other by being touched at the two touch points; measure currents that flow between the first electrode pair and between the second electrode pair when the touch occurs, wherein the currents indicate distance between the two touch points; and discriminate trajectories of the two touch points based on the values of the measured divided voltages and currents.