| 摘要 |
<p>An input device used for an image processing apparatus is disclosed. The input device of the invention includes: an operation panel through which, when a point on the operation panel is touched, vibrations are propagated from the point, the operation panel having a predetermined reference point; a plurality of sensors, disposed at a plurality of positions on the operation panel, for detecting the vibrations, each of the sensors outputting a detection signal at the detection of the vibration; and an arithmetic circuit for receiving the detection signal from each of the plurality of sensors, and for calculating a position vector of the touched point on the basis of the detection signals. The input device further includes position vector correcting means. The position vector correcting means has: a first memory for storing a reference position vector which represents the position of the reference point; means for calculating a difference between the reference position vector and a position vector of the reference point which is calculated on the basis of the detection signals output from the plurality of sensors after the reference point is touched; a second memory for storing the difference; and correcting means for correcting the position vector of the point which is calculated by the arithmetic circuit, based on the difference. <IMAGE></p> |
