Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-11-22
2009-06-09
Nguyen, Hoa T (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07545597
ABSTRACT:
In a recording/reproducing method of a magnetic tape in a tracking servo system, a recording density of each data track is increased while inhibiting occurrence of a recording/reproducing error caused by a size change of a magnetic tape in the width direction. Data tracks are each set to have a smaller track width stepwise as closer to servo tracks (41T-1to41T-5etc.) in the width direction of a magnetic tape1.With such a setting, the width of the data tracks (A1-41T-1to A1-41T-5etc. ) closest to the servo tracks (41T-1to41T-5) can be minimized, thereby enabling a significant increase in number of the data tracks. Further, even when the size of the magnetic tape1changes in the width direction due to a change in external environment such as a temperature or moisture, to lead to large displacement of the data tracks (A8-41T-1to A8-41T-5) distant from the servo tracks (41T-1to41T-5), the data head (A8) can be readily aligned to face the data tracks (A8-41T-1to A8-41T-5) in the reproduction by an increased portion of the width size of the data tracks (A8-41T-1to A8-41T-5), and it is thereby possible to ensure reading of data signals from the data tracks (A8-41T-1to A8-41T-5) so as to improve reproduction accuracy.
REFERENCES:
patent: 5488525 (1996-01-01), Adams et al.
patent: 6222698 (2001-04-01), Barndt et al.
patent: 7154691 (2006-12-01), Girvin et al.
patent: 7253988 (2007-08-01), Okafuji et al.
patent: 2005/0117246 (2005-06-01), Sueki et al.
patent: 2002-157722 (2002-05-01), None
patent: 2003-173508 (2003-06-01), None
Doi Tsugihiro
Inoue Tetsutaro
Kawarai Seigi
Kuse Sadamu
Mitsuhashi Hiroyuki
Birch & Stewart Kolasch & Birch, LLP
Habermehl James L
Hitachi Maxell Ltd.
Nguyen Hoa T
LandOfFree
Recording/reproducing method of magnetic tape does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording/reproducing method of magnetic tape, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording/reproducing method of magnetic tape will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4055133