| 摘要 |
An input system for a computer has a hand-held movable pen, a stationary part electrically connectable to a computer, and a flexible part connecting the pen to the stationary part. The stationary part has a working surface over which the pen is manually moveable, and a light source is operable to emit light from a tip of the pen. The input system also has a first layer of transparent slits and light scattering or fluorescent strips below the working surface and extending parallel to each other in one direction and a second layer of transparent slits and reflecting or fluorescent strips below the first layer and extending parallel to each other in a direction perpendicular to the one direction. Movement of the pen over the working surface causes light from the tip of the pen either to be scattered upwardly by the first layer and/or to pass downwardly to the first and second layers or to stimulate light fluorescence from the first and second layers in a manner indicative of X and Y axis positions of the pen on the working surface. At least one light sensor is provided to detect scattered and/or transmitted or otherwise varied light, and the stationary part has a converting circuit operable to convert the sensed light to electrical signals indicative of at least an X or Y position of the pen and transmit the signals to a computer to effect corresponding positioning of a cursor on a visual display device thereof.
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