Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2007-10-22
2010-10-12
Tzeng, Fred (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07813075
ABSTRACT:
Techniques for performing metrology on magnetic media disk formations that are arranged in curvilinear patterns are disclosed. Small integrated test patterns having rectangular or hexagonal periodicity are integrated among the concentric circles of patterned media formations. The test patterns cover only very small areas of the disk so as to not significantly affect disk capacity. The periodicity of the test patterns allows their formations to be more readily measured by metrology technology than those having a curvilinear periodicity.
REFERENCES:
patent: 4452619 (1984-06-01), Wright et al.
patent: 5319481 (1994-06-01), Fergason
patent: 5431520 (1995-07-01), Brugger
patent: 5477103 (1995-12-01), Romano et al.
patent: 5656807 (1997-08-01), Packard
patent: 5751690 (1998-05-01), Ohira et al.
patent: 5893972 (1999-04-01), Peterson
patent: 6204989 (2001-03-01), Hrinya et al.
patent: 6603540 (2003-08-01), Kaupp
patent: 6642519 (2003-11-01), Ikeda
patent: 6658922 (2003-12-01), Leigh et al.
patent: 6902086 (2005-06-01), Norrid
patent: 6910634 (2005-06-01), Inose et al.
patent: 6980387 (2005-12-01), Yoshizawa et al.
patent: 7060977 (2006-06-01), Dupeyrat et al.
patent: 7101017 (2006-09-01), Endo et al.
patent: 7525109 (2009-04-01), Albrecht et al.
patent: 7542209 (2009-06-01), McGuire, Jr.
patent: 2002/0050153 (2002-05-01), Schultz et al.
patent: 2004/0147121 (2004-07-01), Nakagaki et al.
patent: 1190776 (1998-08-01), None
patent: 1515318 (2005-03-01), None
patent: 61172233 (1986-08-01), None
patent: 62200532 (1987-09-01), None
patent: 2297732 (1990-12-01), None
patent: 3178053 (1991-08-01), None
patent: 3178055 (1991-08-01), None
patent: 4310641 (1992-11-01), None
patent: 8297826 (1996-11-01), None
patent: 9282654 (1997-10-01), None
patent: 10241208 (1998-09-01), None
patent: 2004055048 (2004-02-01), None
patent: 2004253040 (2004-09-01), None
Hattori, et al., Fabrication of Discrete Track Perpendicular Media for High Recording Density, Oct. 16, 2003; vol. 40, No. 4, pp. 2510-2515, IEEE Transactions on Magnetics, Jul. 2004.
Hitachi Global Storage Technologies - Netherlands B.V.
Tzeng Fred
LandOfFree
System, method and apparatus for performing metrology on... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System, method and apparatus for performing metrology on..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System, method and apparatus for performing metrology on... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4229172