Buried servo magnetic head

Details Buried servo magnetic head Buried servo magnetic head

1990-03-06

1991-06-04

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Coil

360 7705, 360 7707, 360 7711, G11B 517, G11B 5596, G11B 2110

Patent

active

050219103

ABSTRACT:
A device for reading servo information from a medium in a buried servo magnetic head system. The device consists of a coil for reading/writing data in the medium and a coil for reading the low-frequency servo signal, both coils being wound around the same core. The servo coil has a greater number of turns than the read/write coil which results in the servo signal having a lower resonance frequency than the read/write signal. By obtaining a separate read/write signal and a servo signal produced from a single core in a single head, physical positional errors are avoided without sacrificing the optimization of the separate signals.

REFERENCES:
patent: 3697705 (1972-10-01), Holt
patent: 3871024 (1975-03-01), Camras
patent: 3881194 (1975-04-01), Heaslett et al.
patent: 4313140 (1982-01-01), Keidl
patent: 4460934 (1984-07-01), Yamada
patent: 4639812 (1987-01-01), Nakamichi
patent: 4782415 (1988-11-01), Vinal
patent: 4825318 (1989-04-01), Hoo et al.

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