Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing
Patent
1995-02-06
1997-08-26
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of biasing or erasing
360113, G11B 503
Patent
active
056616147
ABSTRACT:
A method and apparatus is disclosed for recovering data with unstable low amplitude magnetorestrictive heads. After an error in data recovery is detected a technique is invoked that changes the bias current through the magnetoresistive head to the reverse direction in a predetermined manner. The method includes reversing the bias current direction, returning the bias current to its normal state and reading the data from the storage medium. Alternatively, the method includes reversing the bias current direction and reading the data when the bias current direction is reversed.
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K. Morikawa, T. Matsuura, S. Horibata, H. Shibata, "A Study of Popcorn Noise for Thin Film Heads", 1991, pp. 4939-4941, IEEE Transactions on Magnetics, vol. 27, No. 6, Nov. 1991.
Eaton Robert Eugene
Hirko Richard George
Wallash Albert John
International Business Machines - Corporation
Murrray Leslie G.
Psitos Aristotelis M.
Wamsley Patrick
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