Patent ID: 11175782

Abstract:
A touch information acquiring unit acquires touch information including the positions of touch points and the electrostatic capacitances of the touch points. A touch means determining unit determines whether each of the touch points is touched by a finger or by an input device with which a finger is in contact using the touch information, and thereby determines whether there is a touch point touched by the input device with which the finger is in contact. In a case where it is determined that there is a touch point touched by the input device with which the finger is in contact, and the total number of touch points on a touch panel exceeds an effective upper limit number, an operation determining unit determines that one or more touch points touched by fingers are points where touches are to become ineffective, and regards the one or more touch points as points from which touches are released, the number of the one or more touch points being equal to a number by which the total number exceeds the effective upper limit number.