Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2008-10-03
2009-12-15
Nguyen, Hoa T (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07633705
ABSTRACT:
According to one embodiment, a disk drive has a disk, a CPU and a memory. The CPU measures servo intervals between the servo areas provided on the disk, and calculates changes of the servo intervals, which have resulted from a temperature change. The CPU detects a disk shift from the changes of the servo intervals. The CPU updates the disk-runout information stored in the memory, in accordance with the disk shift detected.
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Habermehl James L
Kabushiki Kaisha Toshiba
Knobbe Martens Olson & Bear LLP
Nguyen Hoa T
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