Magnetic storage device and contact detection method
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United States of America Patent
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Mar 8, 2011
Grant Date -
Jan 28, 2010
app pub date -
Jun 2, 2009
filing date -
Jul 22, 2008
priority date (Note) -
Expired
status (Latency Note)
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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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