Patent ID: 8803842

Claim:
A touch panel apparatus comprising: a touch panel having two resistance films, each having a pair of electrode terminals at edge side portions opposing each other, the two resistance films closely opposing each other to be capable of being in contact with each other so that the pair of electrode terminals are vertically perpendicular to each other; a between-terminal resistance measuring circuit designed to measure a resistance value of the pair of electrode terminals; a two-point touch determining circuit designed to determine whether or not two points are touched on the touch panel based upon the resistance value measured by the between-terminal resistance measuring circuit; a pressing force detector adapted to detect a pressing force of a touch input when the two-point touch determining circuit determines that the two points are touched; a two-point distance detector adapted to detect a distance between the two points based upon the resistance value measured by the between-terminal resistance measuring circuit and the pressing force measured by the pressing force detector, when the two-point touch determining circuit determines that the two points are touched; wherein the two-point distance detector comprises: a reference value calculating circuit designed to calculate a reference value of the distance between the two points based upon a difference between the resistance value measured by the between-terminal resistance measuring circuit when the touch panel is not touched and the resistance value measured by the between-terminal resistance measuring circuit when the touch panel is touched; and a correcting circuit designed to increase the reference value of the distance between the two points calculated by the reference value calculating circuit, as the pressing force detected by the pressing force detector is smaller.