Wave torque retract of disk drive actuator

Details Wave torque retract of disk drive actuator Wave torque retract of disk drive actuator

2007-11-27

2007-11-27

Korzuch, William R. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078040

Reexamination Certificate

active

11323800

ABSTRACT:
A disk drive actuator circuit adapted to retract a head assembly when a capacitor discharges energy to the voice coil. This voltage may be modulated to deliver peak torque to get the actuator over a ramp, yet also deliver a lower torque to suppress the initial head velocity when the actuator is over the disk.

REFERENCES:
patent: 6316898 (2001-11-01), Albrecht et al.
patent: 6549359 (2003-04-01), Bennett et al.
patent: 6594102 (2003-07-01), Kanda et al.
patent: 6643087 (2003-11-01), Kuroki et al.
patent: 7054089 (2006-05-01), Kokami
patent: 7068460 (2006-06-01), Brenden et al.

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