Patent ID: 7199788
Filing Date: 2007-04-03
Classification: G06F

Abstract:
1. A pointing input device comprising: a display panel operable to display any pointing input information on a display area; a transparent protective plate laminated on the display area of the display panel; a piezoelectric substrate attached to the transparent protective plate operable to convert a deformation caused by a push against the transparent protective plate into an electric signal and further operable to output the electric signal; and an optical touch panel disposed on the transparent protective plate operable to emit light beams for reticulately scanning an input operation area of the optical touch panel along orthogonal X and Y directions to detect a pointing input and a pointing input position in the input operation area when the light beams are intercepted by the pointing input, the input operation area having a display area that is visible through the transparent protective plate, wherein the pointing input device determines and outputs pointing position data indicating the pointing input position while the optical touch panel detects the pointing input, and the pointing input device outputs push detection data together with the pointing position data when the electric signal is outputted from the piezoelectric substrate and the push against the transparent protective plate is judged while the optical touch panel is detecting the pointing input, thereby indicating an activation of the pointing input device and preventing accidental activation of the device resulting from a momentary disruption in the light beams emitted by the optical touch panel.