MR head read signal preconditioning circuitry for reducing pulse

Details MR head read signal preconditioning circuitry for reducing pulse MR head read signal preconditioning circuitry for reducing pulse

1995-05-26

1999-08-24

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

360 32, G11B 535

Patent

active

059431776

ABSTRACT:
The present invention relates to circuitry for processing an analog read signal, such as a signal produced by a magnetoresistive head, in a magnetic data storage system. The circuitry processes the analog signal before the signal reaches the detector which converts the analog signal into a digital signal representative of the data originally stored on the magnetic medium. In one embodiment, the invention comprises circuitry for equalizing the amplitudes of the positive and negative pulses in the analog read signal. In another embodiment, the invention comprises circuitry for reducing the baseline shift of the analog read signal. The invention may be used in magnetic data storage systems using any conventional data detection method.

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Su et al., "Track Edge Phenomena in Thin Film Longitudinal Media," IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989, pp. 3384-3386.

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