| 摘要 |
<p>PURPOSE:To detect a position coordinate of each magnetic generator even when a distance from the first coil of plural magnetic generators of an eraser is extremely contiguous, by executing measurement of the time corresponding to the position coordinate at every first and second coils in the X direction, and at every first and second coils in the Y direction. CONSTITUTION:The time corresponding to a position coordinate of a magnetic generator 23 of a writing tool or an eraser is measured at every first and second coils 32, 35 in the X direction and the Y direction, or at every plural first and second coils 32, 35 in the X direction and the Y direction, which are combined with a prescribed number of coils between. Accordingly, even when positions of plural magnetic generators of the eraser are extremely contiguous in the X direction or the Y direction, each time data is measured independently, respectively, and based on these data, the position coordinates in the X direction and the Y direction of each magnetic generator are detected.</p> |
