Electromagnetic pickup cartridge with flux sensors mounted above

Details Electromagnetic pickup cartridge with flux sensors mounted above Electromagnetic pickup cartridge with flux sensors mounted above

1984-04-09

1985-06-18

Cardillo, Jr., Raymond F.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

369146, H04R 1112

Patent

active

045244391

ABSTRACT:
An electromagnetic pickup cartridge comprises a movably supported permanent magnet magnetized in the direction of the thickness thereof, a cantilever secured to the magnet with a stylus attached to the free end thereof, and a pair of magnetic flux sensors stationarily mounted above the permanent magnet at right angles to each other for sensing the angular displacement of the permanent magnet about different axes with respect to a neutral position.

REFERENCES:
patent: 2507708 (1950-05-01), Greener
patent: 3763335 (1973-10-01), Morita
patent: 3991284 (1976-11-01), Braun
patent: 4011417 (1977-03-01), Kageyama et al.
patent: 4037060 (1977-07-01), Uchida et al.
patent: 4124783 (1978-11-01), Nemoto

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