Patent attributes
The present invention is to provide a mobile communication device, which comprises a rotating member; a housing including a recessed hole having a circular opening on a surface of the housing wherein the hole is dimensioned to fit the rotating member therein with a portion of the rotating member projected from the housing; and one or more detectors provided in the hole of the housing facing the rotating member, the detectors having upper portions in rotational contact with the rotating member and lower portions electrically connected to a circuit board. In response to rotating the rotating member a movement signal representing the rotational movement of the rotating member is generated by the detectors; and the movement signal is adapted to convert into an instruction useable to move an object on a top display of the mobile communication device.
