| 摘要 |
A method for inputting information by an input device with photosensitive elements uses laser light to illuminate a target and two photosensitive elements to sense the time at which beams reflected by the target and then reflected respectively by rotatable first and second mirrors, and determines an included angle between a virtual connecting line of the target and the first mirror and a virtual connecting line of the first mirror and the second mirror and an included angle between a virtual connecting line of the target and the second mirror and the virtual connecting line of the first and second mirrors depending on the time, thereby calculating a coordinate of the target and taking it as relative input information, capable of saving the time for obtaining the target's coordinate and the production cost of the input device. |
