Disk drive with altitude detection via analysis of...

Details Disk drive with altitude detection via analysis of... Disk drive with altitude detection via analysis of...

2007-07-17

2007-07-17

Korzuch, Wiliam (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077010, C360S078040

Reexamination Certificate

active

11256299

ABSTRACT:
A controller for a disk drive measures track misregistration, extracts non-repeatable runout from measured track misregistration, determines one or more components of non-repeatable runout at various radial locations of a disk, and compares the determined components to known values at different altitudes to determine an operating altitude of a disk drive.

REFERENCES:
patent: 6771440 (2004-08-01), Smith
patent: 2003/0193727 (2003-10-01), Fioravanti et al.
patent: 2006/0044666 (2006-03-01), Fukushima
patent: 2006/0146443 (2006-07-01), Chang et al.

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