摘要 |
A mouse comprises a cover and a displacement pad which is displaced upon movement of the mouse over a surface. Displacement transducer means, e.g., strain gauges mounted in a parallel arm linkage, are used to ascertain direction of motion. Noise created by sliding motion is monitored by a microphone, the output of which is a function of velocity and therefore distance. The microphone may be mounted to the displacement pad, and the pad and microphone covered with a friction and vibration enhancing medium, such as felt. The displacement pad may also be suspending in a computer terminal and be "stroked" to achieve displacement and noise. Calculating means produce cursor dot control signals based on displacement and noise.
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