Methods and apparatus to monitor and control hard-disk head...

Details Methods and apparatus to monitor and control hard-disk head... Methods and apparatus to monitor and control hard-disk head...

2007-03-22

2010-11-09

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Of transducer assembly mechanism

C360S075000

Reexamination Certificate

active

07830765

ABSTRACT:
Methods and apparatus to monitor and control hard-disk drive head position are described. In one example, a hard-disk drive system includes a hard-disk drive platter, a hard-disk drive read head configured to read information from the hard-disk drive platter, and a hard-disk drive head position controller configured to a receive a signal via the hard-disk drive read head and to determine if the received signal indicates that a distance between the hard-disk drive platter and the hard-disk drive is less than a predetermined distance and to vary a temperature of the read head based on the determination.

REFERENCES:
patent: 6411458 (2002-06-01), Billings et al.
patent: 2005/0105204 (2005-05-01), Bloodworth et al.
patent: 2007/0058280 (2007-03-01), Wada et al.
Brian E. Schultz, “Thermal Fly-height Control (TFC) Technology in Hitachi Hard Disk Drives”, Hitachi Inspire the Next, www.hitachigst.com, 2006 Hitachi Global Storage Technologies, pp. 1-4.

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