Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1994-07-05
1997-10-07
Psitos, Aristotelis
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 75, 360 7712, G11B 2102
Patent
active
056754493
ABSTRACT:
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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patent: 4485418 (1984-11-01), Bremmer
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patent: 4882635 (1989-11-01), Sanai
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patent: 5293277 (1994-03-01), Shimazaki et al.
patent: 5343342 (1994-08-01), Kanagawa et al.
"High-Bandwidth Optical Channel for Rotating-Head Magnetic Tape", Research Disclosure, No. 342, Oct. 1992, Havant GB, p. 782.
Makino Toyoshi
Sano Akira
Cullen Larry T.
Mitsubishi Denki & Kabushiki Kaisha
Psitos Aristotelis
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