Apparatus and method of manipulating sum, absolute difference an

Details Apparatus and method of manipulating sum, absolute difference an Apparatus and method of manipulating sum, absolute difference an

1991-08-29

1993-06-01

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127

Patent

active

052165612

ABSTRACT:
A magnetoresistive (MR) head assembly includes an elongated MR element, arranged transverse to an adjacent magnetic recording medium, defining two substantially equal MR portions. Signal processing circuitry, coupled to respective outputs of the two MR portions, is arranged for producing and manipulating sum and difference signals of respective playback signals developed across the two MR portions, to produce a resultant information-bearing signal played back from both MR portions that is unperturbed by any error signal induced by a localized asperity in the adjacent magnetic recording medium.

REFERENCES:
patent: 5079663 (1992-01-01), Ju

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