Enhanced MR offset with dynamic tuning range

Details Enhanced MR offset with dynamic tuning range Enhanced MR offset with dynamic tuning range

2005-03-29

2005-03-29

Sniezek, Andrew L. (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S031000, C360S076000

Reexamination Certificate

active

06873488

ABSTRACT:
A reader-to-writer offset for a head positioned over a track on a disc in a disc drive having a plurality of tracks is generated by using two iterations. A first iteration is used to determine a fine-tuning range that is used for a second iteration. The first iteration uses coarse steps of the reader across the track pitch to roughly determine OTC boundaries (which are used as the fine-tuning range). The fine-tuning range is determined by locating the point before the first valid reading (e.g., a VGA reading or BER reading with a rate that is less than the BER threshold) and by locating the point after the last valid reading. The second iteration uses fine steps of the reader across the track pitch to determine the actual OTC boundaries. The OTC boundaries are the first valid reading and the last valid reading that are made using the fine steps.

REFERENCES:
patent: 4513331 (1985-04-01), Baker
patent: 4912576 (1990-03-01), Janz
patent: 5691857 (1997-11-01), Fitzpatrick
patent: 5793555 (1998-08-01), Belser
patent: 5867343 (1999-02-01), Le
patent: 5909333 (1999-06-01), Best
patent: 5986847 (1999-11-01), Le
patent: 5991115 (1999-11-01), Chainer
patent: 6008962 (1999-12-01), Le
patent: 6061201 (2000-05-01), Woods
patent: 6067205 (2000-05-01), Mathews et al.
patent: 6320718 (2001-11-01), Bouwkamp
patent: 6519107 (2003-02-01), Ehrlich
patent: 6650491 (2003-11-01), Suzuki et al.

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