Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Reexamination Certificate
2005-03-08
2009-06-09
Feild, Joseph H (Department: 2627)
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
C360S060000, C360S077080
Reexamination Certificate
active
07545593
ABSTRACT:
A magnetic storage system includes a disk, a head, an actuator, and a servo controller. The servo controller monitors a value, such as a position error signal (PES) sample value, a predicted PES sample value, and the like, that is based on servo information provided by the head. The servo controller provides a signal to inhibit writing by the head based on a comparison of the monitored value with a threshold, such as a write fault window (WFW), a PES plus Velocity (PPV) threshold, and the like. The servo controller sets the threshold to a first value based on at least one of an on-track track misregistration (TMR) value and a seek settle TMR value. When the servo controller determines that the head is subject to a vibration condition, the servo controller sets the threshold to a second value that is different from the first value.
REFERENCES:
patent: 6094806 (2000-08-01), McNeil et al.
patent: 6178058 (2001-01-01), Pan et al.
patent: 6226140 (2001-05-01), Serrano et al.
patent: 6429990 (2002-08-01), Serrano et al.
patent: 6496315 (2002-12-01), Ueda et al.
patent: 6657805 (2003-12-01), Nishida et al.
patent: 6671110 (2003-12-01), Baba et al.
patent: 6714371 (2004-03-01), Codilian
patent: 6714372 (2004-03-01), Codilian et al.
patent: 6717757 (2004-04-01), Levy et al.
patent: 6735033 (2004-05-01), Codilian et al.
patent: 6788480 (2004-09-01), Codilian et al.
patent: 6795262 (2004-09-01), Codilian et al.
patent: 6798610 (2004-09-01), Deng et al.
patent: 6882489 (2005-04-01), Brunnett et al.
patent: 2004/0125486 (2004-07-01), Schmidt
patent: 2004/0125496 (2004-07-01), Schmidt
patent: 2005/0152057 (2005-07-01), Schmidt
Brunnett Don
Flynn Bill
Sun Yu
Feild Joseph H
Maxtor Corporation
Negrón Daniell L
Westman Champlin & Kelly P.A.
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