| 摘要 |
An angle information input apparatus has a main unit and a rotator. The main unit forms a peripheral portion of the input apparatus and has a first position-designating portion. The rotator is rotatable within the main unit and has a second position-designating portion. The input apparatus thus inputs any given angle information according to two positions which are respectively designated by the first and second position-designating portions placed on a tablet. Both first and second position-designating portions are displaced from the center position of the rotator. The distance between the first position-designating portion and the center position of the rotator is different from the distance between the second position-designating portion and the center position of the rotator. Accordingly, angle information is input only when the rotator is rotated, but it is not input when the input apparatus itself is merely moved.
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