Systems and methods for calibrating a read/write channel of...

Details Systems and methods for calibrating a read/write channel of... Systems and methods for calibrating a read/write channel of...

2006-10-10

2009-06-23

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

C360S046000, C360S065000, C360S075000

Reexamination Certificate

active

07551384

ABSTRACT:
A read/write channel for a hard disk drive comprising at least one analog read component and a fly height control system. The fly height control system controls fly height based on a current fly height value generated based on a fly height measurement signal that passes through the at least one analog read component. The read/write channel comprises a calibration signal generator and a processor. The calibration signal generator generates a calibration signal that is coupled to the at least analog read component to place the read/write channel in a calibration mode. The processor generates compensation data based on an output of the at least one analog read component when the read/write channel is in the calibration mode. The processor generates the current fly height value based on the fly height measurement signal and the compensation data when the read/write channel is in a fly height measurement mode.

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patent: 7023647 (2006-04-01), Bloodworth et al.
patent: 7518813 (2009-04-01), Egan et al.

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