Magnetic disk drive with offset detection of composite...

Details Magnetic disk drive with offset detection of composite... Magnetic disk drive with offset detection of composite...

2007-11-20

2007-11-20

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S031000

Reexamination Certificate

active

11304203

ABSTRACT:
Embodiments of the invention detect a head offset in a data region between servo regions in a data write operation. To detect a head offset even in a data region between servo regions, a magnetic disk drive according to an embodiment of the invention makes adjustments to maintain a fixed relative position between the write head and the read head and reads positional information embedded in certain data by use of the read head until just before writing data. This allows the magnetic disk drive to detect a head offset until just before writing data, leading to enhanced reliability.

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