Fly height calibration for read/write heads

Details Fly height calibration for read/write heads Fly height calibration for read/write heads

2007-01-31

2009-12-15

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S075000

Reexamination Certificate

active

07633696

ABSTRACT:
A fly height controller that controls fly height of a read/write head relative to a rotating data storage disk is calibrated. A heater signal is applied to a heater element to heat the head. The level of a write current that is conducted through the head is increased until the head contacts the disk. The fly height controller is calibrated based on at least a first level of the heater signal and a first level of the write current when the head contacts the disk.

REFERENCES:
patent: 7061706 (2006-06-01), Conteras et al.
patent: 7423829 (2008-09-01), Bang et al.
patent: 2006/0139789 (2006-06-01), Yang
patent: 2007/0127147 (2007-06-01), Yokohata et al.

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