| 摘要 |
An exemplary computer system includes a monitor, a wireless optical pen, a camera module, and a host. The wireless optical pen is configured for projecting an infrared light spot and emitting two visible light beams having different wavelengths to project two visible light spots. The camera module is mounted to the monitor and is configured for capturing images of movement tracks of the infrared light spot and capturing images of the two visible light spots. The host is configured for controlling a movement of a displayed cursor on the monitor and implementing a right-click input or a left-click input according to the images of the movement tracks of the infrared light spot and the images of one of the two visible light spots.
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