Method and apparatus for adjusting asymmetric recording signals

Details Method and apparatus for adjusting asymmetric recording signals Method and apparatus for adjusting asymmetric recording signals

1993-05-24

1996-01-16

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 27, 360 331, G11B 2736, G11B 502

Patent

active

054853206

ABSTRACT:
In a magnetic recording system, an asymmetry detector reverses the phase of a read, single-frequency test signal to indicate to a micro-controller whether recording signal asymmetry is present. Upon detecting such asymmetry, the micro-controller causes a current source coupled to the recording head to adjust a write current to correct the timing of a written data signal.

REFERENCES:
patent: 4466089 (1984-08-01), Wachi
patent: 4669013 (1987-05-01), Scranton et al.
patent: 5185681 (1993-02-01), Volz et al.
patent: 5204788 (1993-04-01), Kasagi et al.
patent: 5262904 (1993-11-01), Tang et al.
patent: 5278702 (1994-01-01), Wilson et al.
patent: 5333084 (1994-07-01), Galloway et al.

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