Patent ID: 8482539

Claim:
An electronic pen system comprising: an electronic pen; a touch panel body having a touch surface on which a touch operation is performed by the electronic pen or by a finger; a position detecting device that detects a touch position on the touch surface of the touch panel where the touch operation is performed; and a controller that receives position detection information on the touch position from the position detecting device and determines whether the touch operation is performed by the electronic pen or by the finger, the electronic pen comprising: a grip portion that is grippable by a user's hand; a pen tip portion that is pressed onto the touch surface by a touch operation of the electronic pen; a touch condition detector that detects a touch of the pen tip portion with the touch surface; a pen information transmitter that transmits predetermined pen information to the controller when the touch condition detector detects the touch of the pen tip portion with the touch surface; and a connecting switch that electrically connects the pen tip portion and the grip portion so that the user's hand is brought into electrical continuity with the pen tip portion through the grip portion when the touch condition detector detects the touch of the pen tip portion with the touch surface; wherein the controller determines that the touch operation is performed by the electronic pen when the controller receives the position detection information from the position detecting device after receiving the pen information from the electronic pen, while the controller determines that the touch operation is performed by the finger when the controller receives the position detection information from the position detecting device without receiving the pen information from the electronic pen.