Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-11-28
2008-10-21
Sniezek, Andrew (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07440219
ABSTRACT:
In a system and method for a non-contact measurement of the fly height of a slider above a magnetic data storage medium using electrostatic force, a slider with a read/write head flies over a magnetic data storage medium. A series of distinct voltages are applied between the slider and the magnetic data storage medium, and corresponding read-back signals are recorded. Using the recorded read-back signals, coefficients for an empirical curve-fit equation are calculated. The coefficients are normalized and converted into a fly height measurement.
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Cha Ellis T.
Fu Yen
Yang Chao-Hui
Zhu Li-Yan
Habermehl James L
Kenyon & Kenyon LLP
SAE Magnetics (H.K. ) Ltd.
Sniezek Andrew
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