Driver device of magnetic heads for magnetic record and reproduc

Details Driver device of magnetic heads for magnetic record and reproduc Driver device of magnetic heads for magnetic record and reproduc

1991-07-22

1994-05-10

Sikes, William L.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 64, 360 66, 360 68, G11B 1512, G11B 503, G11B 502

Patent

active

053113772

ABSTRACT:
A driver device for magnetic heads for a magnetic recording and reproduction apparatus. The driver device drives at least one combined head including at least two head members, each head member having a winding coil, and the effective gap width of the combined head is changed by selectively short-circuiting at least one of the winding coils. By switching a connection between the combined head and a record amplifier or a reproduction head amplifier, the effective gap width of the combined head is changed either to a narrow effective gap width for n time speed recording or reproducing or to a wide effective gap width for standard speed recording or reproducing.

REFERENCES:
patent: 3813693 (1974-05-01), Gooch et al.
patent: 4302790 (1981-11-01), Lemke
patent: 4520405 (1985-05-01), Sasaki et al.
patent: 4635137 (1987-01-01), Matsumoto et al.
patent: 4827359 (1989-05-01), Ookawa et al.
patent: 4858029 (1989-08-01), Ookawa
patent: 5063452 (1991-11-01), Higurashi

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