Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2011-03-08
2011-03-08
Sniezek, Andrew L (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S031000, C360S073030
Reexamination Certificate
active
07903365
ABSTRACT:
A magnetic storage device includes a magnetic disk having a protective film and a lubricant layer formed on the protective film, a head stack assembly including a head operable to read information from and write information to the magnetic disk, and a suspension configured to support the head, a vibration detection sensor operable to output a detection signal to detect vibration of the head stack assembly, and an extraction unit operable to extract a specific frequency range from the detection signal outputted by the vibration detection sensor, the specific frequency range including a natural frequency of the head stack assembly but not including a natural frequency of an air film on the head.
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Greer Burns & Crain Ltd.
Sniezek Andrew L
Toshiba Storage Device Corporation
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