| 摘要 |
To provide a mouse having a mousse function of being able to input relative position information and a function of being able to input absolute position information while enabling a user to accurately designate a reading position of a code by visual recognition. The mouse is an information input device that reads a dot pattern formed on a medium surface and obtained by patterning XY coordinate values or XY coordinate values and a code value based on a predetermined algorithm, including a casing having a reading hole for reading the dot pattern provided at its bottom, position designation means for designating a predetermined position on the medium surface outside the casing, a dot pattern reading unit for reading the dot pattern on the medium surface just under the reading hole, dot pattern irradiation means for irradiating the medium surface with light to read the dot pattern, and a control unit for calculating the XY coordinate values read by the dot pattern reading unit and a direction of the dot pattern, and correcting the XY coordinate values and the direction of the dot pattern by a predetermined distance and direction, to calculate the predetermined position designated by the position designation means. |
