Magnetic disc apparatus with a cosine equalizer and specific gap

Details Magnetic disc apparatus with a cosine equalizer and specific gap Magnetic disc apparatus with a cosine equalizer and specific gap

1989-08-18

1991-07-16

Severin, David J.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360119, G11B 5035

Patent

active

050329340

ABSTRACT:
A magnetic disc apparatus comprises a single write/read magnetic head for carrying out write/read with respect to either one of a low-density magnetic disc and a high-density magnetic disc, and a cosine equalizer supplied with a read signal from the write/read magnetic head. The write/read magnetic head has a core gap length which is between 0.60 and 1.20 times a minimum field conversion length for high-density write by a write/read signal.

REFERENCES:
patent: 4081756 (1978-03-01), Prince et al.
patent: 4615037 (1986-09-01), Adles
patent: 4646184 (1987-02-01), Goto et al.
patent: 4722010 (1988-01-01), Suzuki et al.
patent: 4979053 (1990-12-01), Kusunoki

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