| 摘要 |
<p>PROBLEM TO BE SOLVED: To attain highly precise coordinate detection without being affected by the inclination of an oscillation input pen at the time of oscillation input. SOLUTION: This coordinate inputting device is provided with an oscillation transmitting board and an oscillation input pen for inputting elastic wave oscillation on the oscillation transmitting board. At first, a group delay time(tg) and a phase delay time(tp) are detected as a delay time required for the elastic wave oscillation from the oscillation input pen to reach an oscillation detecting means in a step S11. Next, the inclination of the oscillation input pen at the time of oscillation input is detected by a sensor incorporated in the oscillation input pen in a step S12. The correction amounts of the group delay time are obtained based on the detected inclination of the oscillation input pen in a step S13, and the group delay time is corrected in a step S14. Then, a coordinate position on the oscillation transmitting board indicated by the oscillation input pen is obtained by using the phase delay time obtained in the step S11 and the group delay time corrected in a step S14 in a step S15.</p> |
