Magnetic recording medium, recording/reproducing apparatus,...

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

2008-01-11

2009-12-08

Sniezek, Andrew L (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

C360S016000, C360S077080, C428S848500

Reexamination Certificate

active

07630156

ABSTRACT:
On a rotary-type magnetic recording medium, servo patterns are formed in servo pattern regions on one surface and the other surface of a disk-shaped substrate by patterns including recording regions and non-recording regions. In the servo pattern regions on both the one surface and the other surface, plural functional regions are defined in order in a direction of rotation of the magnetic recording medium. In the pattern formed in at least one region out of the plural functional regions on the one surface, the non-recording regions are formed at formation positions on the one surface corresponding to formation positions of the recording regions on the other surface and the recording regions are formed at formation positions on the one surface corresponding to formation positions of the non-recording regions on the other surface.

REFERENCES:
patent: 2006/0012903 (2006-01-01), Asakura et al.
patent: 2006/0012904 (2006-01-01), Naruse et al.
patent: 2006/0014053 (2006-01-01), Asakura et al.
patent: 2006-031855 (2006-02-01), None
patent: 2006-031856 (2006-02-01), None
English language Abstract of JP 2006-031855.
English language Abstract of JP 2006-031856.
U.S. Appl. No. 11/972,868 to Takai et al., filed Jan. 11, 2008.

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