| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical position detecting device for quickly and highly precisely detecting a pointer with much lower power consumption. <P>SOLUTION: The optical position detecting device includes: a plurality of light sources 10, a camera section 20, a detection section 30 and a control section 40. Each of the plurality of light sources 10 emits rays of light to irradiate a predetermined region of the detection surface, and selectively irradiates the whole detection surface by combining the rays of light. The camera section 20 has an angle of view for imaging the entire surface of the detection surface, and captures an image of a pointer 2 irradiated by the light sources 10. The detection section 30 calculates the position pointed by the pointer 2 by using the image of the pointer 2 captured by the camera section 20. The control section 40 is adapted to turn on the plurality of light sources 10 in a predetermined order at initial scan. Once the position pointed by the pointer 2 is detected by the detection section 30, the control section 40 turns on the light source 10 irradiating a range covering the detected position of the pointer 2, and turns off the rest of light sources 10. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
