Reducing head gain calibration time in a disk drive

Details Reducing head gain calibration time in a disk drive Reducing head gain calibration time in a disk drive

2006-06-20

2006-06-20

Wong, K. (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

07064918

ABSTRACT:
A method for reducing a servo channel head gain calibration time comprising initiating a servo channel head gain calibration process for a head corresponding to the selected disk surface; obtaining a head gain calibration value for a pre-selected zone in the selected disk surface; comparing the obtained calibration value with a pre-stored calibration value for the pre-selected zone and generating a comparison result; and stopping the calibration process for the head if the comparison result does not exceed a threshold value.

REFERENCES:
patent: 4578723 (1986-03-01), Betts et al.
patent: 4979055 (1990-12-01), Squires et al.
patent: 6108151 (2000-08-01), Tuttle et al.
patent: 6587300 (2003-07-01), Dobbek

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