| 摘要 |
A handheld remote instruction device for a computer-based visual presentation system includes a housing, a light emitting module, a keypad, a control unit, a wireless signal transmitter, and a wireless signal receiver. The keypad includes first and second function keys, and a mode switching key for switching between first and second key defining modes for the first and second function keys. A corresponding control signal transmitted by the signal transmitter and received by the signal receiver when either of the first and second function keys is pressed thus depends on the key defining mode set by the mode switching key. Particularly, the control signals generated when the first and second function keys are pressed are associated with a Click/Select command and a Context Menu/Alternate command in the first key defining mode, and with a Page Down command and a Page Up command in the second key defining mode. |
