Magnetic recording medium, magnetic recording/reproducing...

Details Magnetic recording medium, magnetic recording/reproducing... Magnetic recording medium, magnetic recording/reproducing...

2005-08-30

2008-10-28

Nguyen, Hoa T. (Department: 2627)

Dynamic magnetic information storage or retrieval

Record copying

C360S016000, C360S048000, C360S077080

Reexamination Certificate

active

07443622

ABSTRACT:
A reliable magnetic recording medium is provided which comprises a servo signal unit portions formed in a concavo-convex shape, easily produced, and resistant to tracking error. Also provided are a magnetic recording/reproducing apparatus which incorporates the magnetic recording medium, and a stamper for manufacturing the magnetic recording medium with efficiency. The magnetic recording medium includes a recording layer divided into a plurality of data areas and a plurality of servo areas to record information. The recording layer is formed in a concavo-convex shape in each servo area, with a servo signal unit portions formed as either a convex portions or a concave portions of the concavo-convex shape. Of the servo signal unit portions, the burst signal unit portion for tracking is generally elliptical in shape when viewed from the direction of thickness.

REFERENCES:
patent: 4912585 (1990-03-01), Belser et al.
patent: 5590009 (1996-12-01), Ishida
patent: 5828536 (1998-10-01), Morita
patent: 5907448 (1999-05-01), Watanabe et al.
patent: 6602620 (2003-08-01), Kikitsu et al.
patent: 6654337 (2003-11-01), Endoh et al.
patent: 6829201 (2004-12-01), Nishikawa et al.
patent: 6852431 (2005-02-01), Fukutani et al.
patent: 6879458 (2005-04-01), Sacks et al.
patent: 7167436 (2007-01-01), Koyama et al.
patent: 2001/0028936 (2001-10-01), Nishiyama et al.
patent: A 06-195907 (1994-07-01), None

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