Preventing damage to the heads and media in a removable...

Details Preventing damage to the heads and media in a removable... Preventing damage to the heads and media in a removable...

2006-06-29

2008-08-05

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S256000

Reexamination Certificate

active

07408734

ABSTRACT:
A disk drive uses the integration of the instantaneous velocities of the heads to estimate the distance the heads travel while latched. The disk drive can then determine if the heads are properly parked based solely on the distance traveled, thus avoiding the use of costly sensors. In the event that the heads cannot be properly parked due to some malfunction, the disk drive may store a special code in a nonvolatile memory. The special code directs the controller not to spin up or attempt to load the heads on any disk, preventing the disk from being damaged by the heads.

REFERENCES:
patent: 6016240 (2000-01-01), Jargon et al.
patent: 6876510 (2005-04-01), Heydt et al.
patent: 6958880 (2005-10-01), Lee et al.
patent: 2005/0105205 (2005-05-01), Suzuki
patent: 2005/0128633 (2005-06-01), Hosokawa
patent: 2005/0201000 (2005-09-01), Koh et al.
patent: 2007/0121252 (2007-05-01), Hong et al.

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