Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Reexamination Certificate
2008-01-08
2008-01-08
Korzuch, William R. (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data in specific format
C360S075000
Reexamination Certificate
active
11054589
ABSTRACT:
The present invention relates to a magnetic disk device and provides a magnetic disk device in which data recording areas are separately set based on the inner recording boundary or outer recording boundary of the head measured for each magnetic disk device. When the recording linear (angular) density that has to be attained to ensure a prescribed capacity cannot be attained by the head, the recording linear (angular) density that has to be attained by the head is reduced and the prescribed capacity is realized by expanding the data recording area. A method using a counter-electromotive force generated when the head is moved toward a stopper or ramp load or a method by which the measurements are conducted based on the head position information from the servo signal can be used for measuring the positions of the inner recording boundary and outer recording boundary of the head.
REFERENCES:
patent: 5596458 (1997-01-01), Emo et al.
patent: 5870237 (1999-02-01), Emo et al.
patent: 5946153 (1999-08-01), Emo et al.
patent: 6005725 (1999-12-01), Emo et al.
patent: 6061195 (2000-05-01), Wilson et al.
patent: 6084732 (2000-07-01), Lee
patent: 6091559 (2000-07-01), Emo et al.
patent: 6260257 (2001-07-01), Emo et al.
patent: 6560052 (2003-05-01), Ng et al.
patent: 6611390 (2003-08-01), Egan
patent: 6757119 (2004-06-01), Leow et al.
patent: 53-092109 (1978-08-01), None
patent: 58-87118 (1983-06-01), None
patent: 58-155505 (1983-09-01), None
patent: 61-236001 (1986-10-01), None
patent: 3-178004 (1991-08-01), None
patent: 4-301274 (1992-10-01), None
patent: 5-326162 (1993-12-01), None
patent: 10-106179 (1998-04-01), None
patent: 2001-266454 (2001-09-01), None
Furuhashi Takao
Ohba Kazuhide
Sakai Yoshimichi
Fujitsu Limited
Greer, Burns and Crain, Ltd.
Korzuch William R.
Negrón Daniell L.
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