Dynamic magnetic information storage or retrieval – General recording or reproducing – Recording-or erasing-prevention
Reexamination Certificate
2006-11-28
2006-11-28
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Recording-or erasing-prevention
Reexamination Certificate
active
07142385
ABSTRACT:
A method, apparatus and program storage device for magnetic disk drive protection is provided. A stable position data storage stores stable-state information representing a magnetic disk drive in an operating environment that satisfies a certain condition. An acceleration sensor senses changes in acceleration acting on the magnetic disk drive and a rest-state measuring unit determines whether the magnetic disk drive is in a state of rest based on information acquired by the acceleration sensor. An operating state determination unit, in response to a first determination by the rest-state measuring unit that the magnetic disk drive is in a state of rest, determines when the state of rest corresponds to the stable-state information stored in the stable position data storage, and sets a detection sensitivity to a sign that which indicates an impending shock to the magnetic disk drive based on a result of a second determination. A magnetic head operation controller controls operation of the magnetic disk drive including retraction of a magnetic head based on the detection sensitivity set by the operating state determination unit.
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Ogawa Mitsuru
Shimotono Susumu
Tanaka Akiyoshi
Chambliss Bahner & Stophel P.C.
Hudspeth David
Lenovo (Singapore) Ptd. Ltd.
Lynch David W.
Tzeng Fred F.
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