Compensation of MR head non-linearities using a saturable transfer function

M.Y. Lin, S.W. Foo, G. Mathew, J.W.M. Bergmans, Ye Weichun

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It is well known that the nonlinear behavior of magnetoresistive (MR) heads results in the isolated pulses having asymmetry and saturation. These nonlinear effects can be quantified by measuring the positive and negative isolated pulses. In this paper, we propose a saturable model for estimating the MR nonlinearity from read-back signals. It models the nonlinearity using bias and saturation parameters. The proposed model can he used to compensate the nonlinearity in the read-back signal, thus providing a way to linearize the channel. Simulations done using measured data demonstrate the effectiveness of the proposed model
Original languageEnglish
Pages (from-to)2490-2492
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5
Publication statusPublished - 2000


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