Patent ID: 6335724
Filing Date: 2002-01-01
Classification: G06F

Abstract:
A coordinate-position inputting device that forms a touch-panel surface by irradiating light which is substantially parallel to a writing surface of a white board or a display surface of a display means and inputs a coordinate position by detecting a position where the light in the touch-panel surface is blocked, said coordinate-position inputting device comprising:a frame body with reflecting members for recursively reflecting light provided on the inner side of the four edges of a frame having a rectangular shape; two optical units each with a light source section for irradiating light from any corner of the frame body to reflecting members in two frame edges forming a corner diagonally opposite to the corner above and a light receiving section for receiving the light reflected from the reflecting members of the two frame edges forming the opposite corner integrated to each other therein; and a mounting member for detachably attaching said frame body to the writing surface of the white board or the display surface of the display unit; wherein said two optical units are located at both ends of any one of frame edges forming said frame body and said two optical units and said frame body are integrated to each other.