Patent attributes
A control device includes a housing, a control module having a movable member mounted in the housing and movable by the user and having a magnet located on each of the two distal ends thereof, and a circuit module that includes a microprocessor, a rotation sensor module electrically connected to the microprocessor and adapted for sensing rotation of the movable member or a sleeve on the movable member and producing a respective control signal, and a magnetic sensor module electrically connected to the microprocessor and adapted for sensing the strength of the magnetic field emitted by each magnet indicative of the direction and amount of a linear displacement of the movable member and producing a respective control signal. Subject to non-contact sensing design, the control device avoids any mechanical fatigue or contact failure.
