| 摘要 |
<p>PURPOSE:To detect the X and Y moving amounts of an emitter from the change of each angle against the emitter by using two light receiving angle sensors. CONSTITUTION:A display part 9 is provided at a cover 10, and light receiving angle sensors 3a and 3b in which two photodiodes are combined like a fan are provided at the cover 10, too. A keyboard 12 is provided at a main body part 11. An entire system is controlled by the main body part 11. A light emitted by a pen type mouse 56 is captured by the light receiving angle sensors 3a and 3b, and the change of angles alpha and beta is converted into an X-Y movement.</p> |
