Dual head type magnetic disc recording/reproducing apparatus

Details Dual head type magnetic disc recording/reproducing apparatus Dual head type magnetic disc recording/reproducing apparatus

1994-02-03

1995-03-07

Hajec, Donald

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 65, G11B 509, G11B 5035

Patent

active

053963750

ABSTRACT:
A dual head type magnetic disk recording/reproducing apparatus, in which a magnetic disk is inserted and/or from which the magnetic disk is ejected, the magnetic disk having a first surface and a second surface each of which is segmented into a plurality of tracks, each track having a corresponding track number, the dual head type magnetic disk recording/reproducing apparatus includes a first magnetic head which reproduces an information signal from a first track on the first surface, a second magnetic head which reproduces an information signal from a second track on the second surface, a track number of the second track corresponding to that of the first track, and a predetermined number of tracks being between the first track and a radial location of the second track, a low pass filter, coupled to the first and second magnetic heads, to which the information signals reproduced by the first and second magnetic heads are supplied, and control means, coupled to the low pass filter, for adjusting a cut-off frequency of the low pass filter so that a resolution of the information signal reproduced at the first track and that of the information signal reproduced at the second track can be approximately equal to each other.

REFERENCES:
patent: 3430215 (1964-07-01), Krossa et al.
patent: 4244008 (1981-01-01), Holt
patent: 4306257 (1981-12-01), Harman
patent: 4564869 (1986-01-01), Baumeister
patent: 4651236 (1987-03-01), Ouchi et al.
patent: 4722010 (1988-01-01), Suzuki et al.

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