Patent ID: 8717307

Claim:
A position-detecting device for detecting a position pointed to by a position-pointing instrument, comprising: an operation panel for detecting the position pointed to by the position-pointing instrument, said position being detected by receiving electromagnetic waves to and from the position-pointing instrument; a touch pad operably associated with the operation panel for sensing manipulation by a user's finger, the touch pad providing an area for sensing manipulation by a user's finger simultaneously with detecting the position pointed to by the position-pointing instrument; a control unit operable to determine whether manipulation of the touch pad is consecutive, and to generate a first signal to be output to an electronic device having a display unit for displaying if the manipulation is determined to be not consecutive and to generate a second signal to be output to the electronic device if the manipulation is determined to be consecutive, wherein scrolling and zooming in and out of the display unit for displaying are selectively triggered by the manipulation on the touch pad and by generation of said first and second signals by said control unit, wherein the user can simultaneously perform a first operation using the position pointing instrument and a second operation on the touch pad using a finger, and wherein the first operation is drawing and the second operation is at least zooming.