Mitsubishi Denki Kabushiki Kaisha

Toyoshi Makino

Akira Sano

The present invention provides a movable magnetic head unit including a signal transmission element. The transmission element transmits by wireless, i.e., through noncontact transmission, a control signal for driving an electromechanical transducing element fixed to a rotary magnetic head. Therefore, noises are prevented from appearing on a display, and stable compensation in the deviation of the magnetic head and a high reliability of the magnetic head unit can be attained.

Magnetic recording/reproducing device with wireless transmission of

The present invention provides a movable magnetic head unit including a signal transmission element. The movable magnetic head is mounted upon a rotary drum of a drum assembly which also includes a stationary drum, the rotary and stationary drums being supported by a shaft. The signal transmission element transmits a control signal wirelessly to the rotary drum to drive an electromechanical transducing element which moves the magnetic head. The signal transmission element may include rotary transformers, mounted on the rotary and stationary drums, facing each other. In a further embodiment, the signal transmission element may include an optical transmitter for optically transmitting the position control signal to an optical receiver mounted on the rotary drum. Wireless transmission of the position control signal prevents noises from appearing on a display, enables stable compensation of deviations of the magnetic head and improves reliability of the magnetic head unit.

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Nagaokakyo, Japan

Toyoshi Makino