ELECTRONIC PEN SYSTEM

PROBLEM TO BE SOLVED: To correctly identify an electronic pen or a finger that touches a touch surface. SOLUTION: An electronic pen transmits pen information to a controller in response to detection of a touch state, and thereafter turns on a connecting switch that disconnects electrical connection between the tip portion and the grip portion of the pen that are provided in a state of being electrically disconnected from each other, so as to enable pen input. The controller determines that position detection information is received from the electronic pen when the position detection information is received from a position detecting device after the pen information is received from the electronic pen, while the controller determines that position detection information is received from a finger when the position detection information is received from the position detecting device without receiving the pen information from the electronic pen. COPYRIGHT: (C)2011,JPO&INPIT