Estimation of track misregistration by using dual-stripe magnetoresistive heads

Na Helian, Zhi Gang Wang, Bin Liu, Desmond J Mapps, Paul Robinson, Warwick Clegg, David Wilton, Yoshihisa Nakamura

Research output: Contribution to journalArticlepeer-review


We propose here a new concept of servoing with dual-stripe magnetoresistive (DSMR) heads. This paper examines the use of its asymmetric microtrack profile for estimating the data and providing servo information. The misregistration estimation algorithm is addressed for a class 4 partial response (PR4) equalized data channel. This requires a low-pass filter to reach an accurate estimation after enough samples are used. Simulation results for a specific head configuration are given which verify the estimating performance. The estimator estimates track misregistration precisely and quickly enough for practical purposes in a real storage system.
Original languageEnglish
Pages (from-to)2348-2355
JournalIEEE Transactions on Magnetics
Issue number4
Publication statusPublished - Jul 1998


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