Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Reexamination Certificate
2008-08-15
2011-11-29
Olson, Jason (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
C360S075000
Reexamination Certificate
active
08068304
ABSTRACT:
Methods, systems, and apparatus, including computer program products are described for calibrating servos, and in some implementations, calibrating spiral servos for use in self-servo-write (SSW) processes. In one aspect, a method is provided that includes determining timing reference information on a machine readable medium, locking a clock signal to the timing reference information, detecting a spiral on the machine readable medium, determining a location of the spiral using the clock signal, and calibrating a spiral servo according to the location of the spiral.
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U.S. Appl. No. 12/192,984, filed Aug. 15, 2008, to be published by the USPTO, application as filed, 40 pages.
Cheung Man
Neos Perry
Richgels Jerry
Rutherford David
Marvell International Ltd.
Olson Jason
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