Technique for initializing hard disk drive

Details Technique for initializing hard disk drive Technique for initializing hard disk drive

1996-11-07

1999-03-16

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7804, G11B 2102

Patent

active

058837493

ABSTRACT:
An hard disk drive (a HDD) initialization technique, for performing compensation for an offset value of an IC (integrated circuit) of a PCB (printed circuit board), generated in associated circuits or apparatus, to stably initialize a head by calibrating an initial offset value to calibrate an integrated circuit offset value of a printed circuit board upon the power being applied; unlatching a head by using the circuit offset value; performing a full track seek for a given time period and calibrating a first torque constant as a self diagnosis function of an actuator; calibrating a bias value from servo information detected during the track seek; and performing the full track seek after calibration of the bias value and calibrating a second final torque constant so as to calibrate the torque constant of the actuator.

REFERENCES:
patent: 4499510 (1985-02-01), Harding et al.
patent: 4907109 (1990-03-01), Senio 360 78.04

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