Patent ID: 7539524

Claim:
A mobile communication device comprising: 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; a circuit board provided within the housing and including one or more detectors provided in the hole of the housing facing the rotating member, wherein portions of the detectors are in rotational contact with the rotating member, 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; a push button provided on the circuit board proximate a position to be in contact with the rotating member, whereby a pressing of the push button by the rotation of the rotating member will generate a pressing signal which is adapted to convert into a control instruction; and a pad provided between the push button and the rotating member, wherein the pad has a top in contact with the rotating member and a bottom affixed onto the circuit board, in response to the rotation of the rotating member the pad is elastically deformed to press the push button, and stopping the pressing of the pad will release a stored elastic force of the pad to return the pad to its original shape and return the rotating member to its original position.