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US 6,785,081 B2Granted
Fly height detector
AssigneeSeagate Technology LLC
InventorsMark A. Chapin, Serge J. Fayeulle, Michael D. Mundt, Gary E. Bement, Paul W. Smith
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AssigneeSeagate Technology LLC
InventorsMark A. Chapin, Serge J. Fayeulle, Michael D. Mundt, Gary E. Bement, Paul W. Smith
Estimating the term…
A fly height detector apparatus and associated method for detecting the fly height of a read/write head spatially disposed from a data storage surface during a data transfer operation. The fly height detector apparatus comprises a receiver circuit measuring the frequency of the read/write head; a perturbation deliverable to the gap between the read/write head and the data storage surface to invoke a dynamic response in the read/write head; and a processor circuit responsive to the receiver circuit to derive a fly height in relation to the dynamic response frequency. The processor circuit comprises a memory in which is stored a numerical model describing a functional interrelationship between the fly height and the read/write head frequency.
A fly height detector apparatus for detecting the fly height of a read/write head spatially disposed from a data storage surface during a data transfer operation, the data storage surface moving relative to the read/write head generating air currents supporting the read/write head at a fly height defining a gap between the read/write head and the data storage surface, the fly height detector apparatus comprising:
A method for detecting a fly height of a read/write head spatially disposed from a data storage surface during a data transfer operation, comprising:
A disc drive, comprising:
Dependencies are inferred from the claim text.