| 摘要 |
PROBLEM TO BE SOLVED: To accelerate coordinate detection processing in a coordinate input system.SOLUTION: The coordinate input system includes two-dimensional image sensor pars (112, 113) arranged at an end part position of an input surface on which an input of coordinates is instructed, a drawing device (140) for instructing an input of coordinates, with two light emission points arranged in a longitudinal direction, and an image processing part 310 for calculating the coordinates of the two light emission points on the input surface in accordance with an update period of frames of respective images by processing, in a frame unit, the images acquired when the two two-dimensional image sensors (112, 113) detect light emitted from the light emission points. |
