| 摘要 |
A coordinate input apparatus includes a light-receiving unit arranged in a coordinate input region, a reflection unit arranged at the peripheral portion of the coordinate input region to reflect incident light, and a light-emitting unit which illuminates the coordinate input region with light. Angle information corresponding to a point which crosses a predetermined level in a light amount distribution obtained from the light-receiving unit is calculated. The coordinates of the pointed position are calculated on the basis of, of a plurality of pieces of calculated angle information, angle information corresponding to direct reflected light from the pointing means, the direct reflected light being generated by the light-emitting unit.
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