| 摘要 |
PURPOSE: A device for selecting a menu by using a supplementary display module of a mobile communication terminal is provided to install a jog shuttle on a supplementary display module, and to enable the supplementary display module to pop up by using a photo reflector, so that a user can pop up a desired menu without opening a folder. CONSTITUTION: A rotative disk(11) has a transmissive window(11a). A portion of a jog shuttle(2) includes a reflecting plate(12) stretching over the transmissive window(11a). A photo reflector irradiates light on the reflecting plate(12), and consists of a light emitting diode and a light receiving diode to deliver a selection menu signal. At least more than one push button(4) is driven to input a menu selected by a sensing operation of the photo reflector. A key input controller inputs a sensed signal, recognizes the selected menu, and pops up the menu on a supplementary display module(1).
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