Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2007-12-28
2009-10-20
Sniezek, Andrew L (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S073030
Reexamination Certificate
active
07605996
ABSTRACT:
A method according to one embodiment comprises detecting a change in a rotational velocity of a magnetic disk or a spindle coupled to the magnetic disk, the change being caused by head-disk contact. A method for detecting head-disk contact according to another embodiment comprises measuring a rotational velocity of a magnetic disk or a spindle coupled to the magnetic disk; detecting a change in the rotational velocity, the change being caused by head-disk contact; and correlating the change in rotational velocity with the head-disk contact.
REFERENCES:
patent: 5594595 (1997-01-01), Zhu
patent: 6198590 (2001-03-01), Codilian et al.
patent: 6288856 (2001-09-01), Ottesen et al.
patent: 6678102 (2004-01-01), Liikanen et al.
patent: 6680806 (2004-01-01), Smith
patent: 6700724 (2004-03-01), Riddering et al.
patent: 6762899 (2004-07-01), Ottesen et al.
patent: 6967805 (2005-11-01), Hanchi et al.
patent: 7068458 (2006-06-01), Huang et al.
patent: 7088545 (2006-08-01), Singh et al.
patent: 7180692 (2007-02-01), Che et al.
patent: 7215495 (2007-05-01), Che et al.
patent: 7224548 (2007-05-01), Emo
patent: 7271975 (2007-09-01), Shimizu et al.
patent: 7289288 (2007-10-01), Tu
patent: 7362534 (2008-04-01), Schreck et al.
patent: 7423830 (2008-09-01), Ma et al.
patent: 2006/0203376 (2006-09-01), Yoshioka et al.
patent: 2006/0238912 (2006-10-01), Kumano
patent: 2007/0053104 (2007-03-01), Satoh et al.
patent: 2007/0127147 (2007-06-01), Yokohata et al.
patent: 2007/0230018 (2007-10-01), Schreck et al.
Khurshudov et al., “Head-Disk Contact Detection In The Hard Disk Drives”,Wear, vol. 255, Issues 7-12, (Aug.-Sep. 2003), pp. 1314-1322. (abstract only).
Baumgart Peter Michael
Davis Charles Raymond
Herbst Gary Allan
Knigge Bernhard E.
Mate Charles Mathew
Hitachi Global Storage Technologies - Netherlands B.V.
Sniezek Andrew L
Zilka-Kotab, PC
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