Dynamic shock detection in disk drive using accumulated...

Details Dynamic shock detection in disk drive using accumulated... Dynamic shock detection in disk drive using accumulated...

2006-12-26

2006-12-26

Wellington, Andrea L. (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

C360S075000, C360S077080

Reexamination Certificate

active

07154690

ABSTRACT:
Dynamically detecting off-track errors in a disk drive by adjusting transducer head position control parameters in response to shock events. In an embodiment, shock events with large magnitude trigger a severe shock timer which lengthens the write fault before write operations resume. In another embodiment, a lower shock threshold is used following an initial shock event. In yet another embodiment, a lower shock threshold is used if an accumulated average position error of the transducer head is large.

REFERENCES:
patent: 5004207 (1991-04-01), Ishikawa et al.
patent: 5126895 (1992-06-01), Yasuda et al.
patent: 5153789 (1992-10-01), Bernett et al.
patent: 5227929 (1993-07-01), Comerford
patent: 5235472 (1993-08-01), Smith
patent: 5333138 (1994-07-01), Richards et al.
patent: 5389850 (1995-02-01), Wilmer
patent: 5392290 (1995-02-01), Brown et al.
patent: 5426545 (1995-06-01), Sidman et al.
patent: 5491394 (1996-02-01), Harwood et al.
patent: 5491676 (1996-02-01), Yamaguchi et al.
patent: 5576909 (1996-11-01), Dierkes et al.
patent: 5696645 (1997-12-01), Laughlin
patent: 5710943 (1998-01-01), Burton et al.
patent: 5777815 (1998-07-01), Kasiraj et al.
patent: 5923487 (1999-07-01), Carlson et al.
patent: 6115200 (2000-09-01), Allen et al.
patent: 6178058 (2001-01-01), Pan et al.
patent: 6313964 (2001-11-01), Lamberts et al.
patent: 6429990 (2002-08-01), Serrano et al.
patent: 6754021 (2004-06-01), Kisaka et al.
patent: 2002/0030915 (2002-03-01), Nishida et al.
patent: WO 94/11874 (1994-05-01), None

Affiliated with

Also associated with

Rating

Dynamic shock detection in disk drive using accumulated... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dynamic shock detection in disk drive using accumulated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic shock detection in disk drive using accumulated... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3711987