Magnetic recording/reproducing apparatus for automatically adjus

Details Magnetic recording/reproducing apparatus for automatically adjus Magnetic recording/reproducing apparatus for automatically adjus

1996-01-29

1997-10-14

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 68, G11B 509

Patent

active

056778015

ABSTRACT:
A magnetic recording/reproducing apparatus includes a write head for recording a signal on a magnetic recording medium, a recording amplifier for supplying a recording current corresponding to the signal to the write head, a read head for reproducing the signal recorded on the magnetic recording medium, a reproducing amplifier for generating a reproduced current corresponding to the signal, an equalizer for correcting a waveform of a reproduced signal reproduced by the read head, a distortion detector for detecting signal distortion reproduced by the read head, thereby obtaining a distortion evaluation value, and a recording current adjusting section for adjusting a magnitude of the recording current in a direction to decrease the distortion (i.e., in a direction to decrease the recording current) on the basis of a detection output obtained by the distortion detector. An optimum recording current is always supplied to the write head in accordance with the degree of wear of the write head. The degree of wear of the head is detected upon request, and head replacement is prompted.

REFERENCES:
patent: 4908722 (1990-03-01), Sonobe
patent: 5101309 (1992-03-01), Mitsuhashi
patent: 5206738 (1993-04-01), Nishigaki et al.
patent: 5325242 (1994-06-01), Fukuchi et al.

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