Retract method to reduce head friction with the disk for a...

Details Retract method to reduce head friction with the disk for a... Retract method to reduce head friction with the disk for a...

2006-09-26

2006-09-26

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C318S362000

Reexamination Certificate

active

07113361

ABSTRACT:
An apparatus, method and system for retracting a read/write head (13) to a landing position of a disk (11) in a disk drive system (10) which includes an actuator (33) coupled with the head (13) for retracting in a first direction toward an outside diameter of the disk (11) and a second direction toward an inside diameter of the disk (11) in response to corresponding signals. A control device (32) coupled with the actuator (33) which is adapted for determining a retract direction for the read/write head (13), wherein a first signal indicative of a first direction and a second signal indicative of a second direction is provided to the actuator (33), the control device (32) further providing the first signal following a loss of power which energizes the disk drive motor (38) of the disk drive system and providing the second signal subsequent to providing the first signal for retracting the read/write head (13) to the landing position.

REFERENCES:
patent: 6140784 (2000-10-01), Mazda
patent: 6157509 (2000-12-01), Ratliff
patent: 6721119 (2004-04-01), Hassan et al.

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