Burst patterns for magnetic disks and magnetic disk devices

Details Burst patterns for magnetic disks and magnetic disk devices Burst patterns for magnetic disks and magnetic disk devices

2009-08-18

2011-11-22

Olson, Jason (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S048000, C360S135000

Reexamination Certificate

active

08064157

ABSTRACT:
A magnetic disk includes: a data recording region having first magnetic parts; the first magnetic parts being arranged in a circumferential direction in the nonmagnetic region and form tracks, and the tracks being arranged in a radial direction at a track pitch Tp; and a burst pattern region having burst patterns making a magnetic head follow the first magnetic parts, the burst patterns having second magnetic parts, the second magnetic parts forming base units arranged at a pitch Sp in a radial direction of the disk, the pitch Sp being more than twice as large as the track pitch Tp, the base units including a plurality of base units arranged in a circumferential direction of the disk, and the base units adjacent to each other in the circumferential direction being displaced from each other by the pitch Sp in the radial direction of the disk.

REFERENCES:
patent: 7403353 (2008-07-01), Tagami et al.
patent: 2006/0061900 (2006-03-01), Ohtsuka et al.
patent: 2007/0217075 (2007-09-01), Kamata et al.
patent: 2007/0281078 (2007-12-01), Kikitsu et al.
patent: A 2006-73137 (2006-03-01), None
patent: A 2007-272962 (2007-10-01), None
patent: A 2007-323724 (2007-12-01), None

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