Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2005-04-19
2005-04-19
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
06882495
ABSTRACT:
Method and apparatus for reducing and dispersing wear to the surface of a rotatable disc in a disc drive using an adaptive dither process. The disc drive includes an actuator assembly that is secured in a parked position by a latch when not in use. The method includes determining an open latch current required to open the latch as the actuator assembly is moved from the parked position to a position over a user data storage portion of the disc. A dither current is subsequently applied to the actuator assembly to induce a reciprocating lateral displacement of the actuator assembly when the actuator assembly is secured in the parked position, wherein the maximum amplitude of the dither current is selected to be less than the open latch current.
REFERENCES:
patent: 5315455 (1994-05-01), Ito
patent: 5384675 (1995-01-01), Crawforth et al.
patent: 5600219 (1997-02-01), Gomez
patent: 5801505 (1998-09-01), Lee et al.
patent: 5828522 (1998-10-01), Brown et al.
patent: 5859738 (1999-01-01), Forehand et al.
patent: 5982571 (1999-11-01), Calfee et al.
patent: 6002549 (1999-12-01), Berman et al.
patent: 6075671 (2000-06-01), Yoneda et al.
patent: 6122131 (2000-09-01), Jeppson
patent: 6154340 (2000-11-01), Cameron
patent: 6252364 (2001-06-01), Chiang et al.
patent: 6301080 (2001-10-01), Boutaghou
patent: 6674604 (2004-01-01), Teng et al.
patent: 20020044388 (2002-04-01), Misso et al.
patent: 406267222 (1994-09-01), None
patent: 2000048506 (2000-02-01), None
DuLaney James W.
Duvall Matthew G.
Lyle Ryan T.
Shim Wonbo
Fellers , Snider, et al.
Habermehl James L
Hudspeth David
Seagate Technology LLC
LandOfFree
Wear reduction of a disc surface using an adaptive dither... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wear reduction of a disc surface using an adaptive dither..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wear reduction of a disc surface using an adaptive dither... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3369075