| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an input device and a projector which have comparatively simple constitutions and can lay restraint on the influence of outer disturbance light. SOLUTION: This input device/projector has an indicating device 5 with a light source 5 blinking in a predetermined period, and a detector 1 that receives the light from the light source 5, detects a point or a trajectory indicated with the light source 5 and generates the coordinate information of the point or the trajectory. The detector 1, on the basis of the amount of light received while the light source 5 lights up and the amount of light received while lighted out, discriminates between the light from the light source 5 and the disturbance light.</p> |
