| 摘要 |
The invention provides an indicating apparatus used in a projection system. The projection system projects a projected image on a projection surface. The indicating apparatus includes an indicating unit and an infrared receiving module. The indicating unit includes a first component, a second component and an infrared transmitting module. The infrared transmitting module is used to transmit a first infrared signal and a second infrared signal. When the indicating unit touches a touch position on the projection surface, the infrared transmitting module transmits the first infrared signal and the second infrared signal respectively through the first component and the second component. The infrared receiving module receives at least one of the first infrared signal and the second infrared signal. Moreover, the invention provides an indicating method and the indicating unit.
|
