| 摘要 |
<p>A method of determining an object's position and associated apparatus provides positional information in a form that may be conveniently communicated to a computer to calculate the object's position. In a preferred embodiment, representatively incorporated in a computer keyboard, a method of determining an object's position includes forming an optical grid of reflected beacons and detecting an obstruction of the reflected beacons. A preferred embodiment apparatus utilizes a single light source to detect an object's position in two dimensions.</p> |
