Detecting fly height of a head over a storage medium

Details Detecting fly height of a head over a storage medium Detecting fly height of a head over a storage medium

2006-11-14

2006-11-14

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S031000

Reexamination Certificate

active

07136250

ABSTRACT:
A method comprising receiving a pulse generated in response to a transition of a head over a predetermined pattern on a storage medium, measuring a first amplitude of a power spectrum of the pulse at a first predetermined frequency and a second amplitude of the power spectrum of the pulse at respective second predetermined frequencies, and calculating a distance between the head and the storage medium based on a function of the first and second amplitudes.

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