Magnetic disk apparatus and servo pattern recording method...

Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking

Reexamination Certificate

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Details

C360S048000, C360S075000, C360S053000, C360S077020, C360S077040

Reexamination Certificate

active

07085084

ABSTRACT:
A magnetic disk apparatus and a servo pattern recording method therefor, enabling writing of servo signal with high quality, without being affected with ill influences due to fluctuation on a rotation speed when conducting the self servo write operation, comprises: a magnetic disk102; a head103having a write element for use of recording information onto the magnetic disk and a read element for reproducing information from the magnetic disk; and an actuator for moving said head to a desired radial position on the magnetic disk, wherein on the magnetic disk is recorded servo patterns110for positioning the head on a recording surface thereof, and within each of the servo patterns are recorded, a pattern sector marker208aas a marker for detecting passage time of the head, a track ID code209, and a burst pattern210for use of detection of the radial position of the head, following a preamble207afor use of synchronization of time-base circuit, and further recorded and disposed a second preamble207band a second sector marker208b,continuously.

REFERENCES:
patent: 4912576 (1990-03-01), Janz
patent: 5612833 (1997-03-01), Yarmchuk et al.
patent: 5757574 (1998-05-01), Chainer et al.
patent: 5907447 (1999-05-01), Yarmchuk et al.
patent: 6005738 (1999-12-01), Chainer et al.
patent: 6031674 (2000-02-01), Tabata
patent: 6101055 (2000-08-01), Chainer et al.
patent: 6304407 (2001-10-01), Baker et al.
patent: 6429989 (2002-08-01), Schultz et al.
patent: 6519107 (2003-02-01), Ehrlich et al.
patent: 6643082 (2003-11-01), Belser
patent: 6704156 (2004-03-01), Baker et al.
patent: 6735031 (2004-05-01), Chainer et al.
patent: 6738205 (2004-05-01), Moran et al.
patent: 6738215 (2004-05-01), Yatsu
patent: 6980382 (2005-12-01), Hirano et al.
patent: 08-212527 (1996-08-01), None
patent: 10-050014 (1998-02-01), None
patent: 10-222943 (1998-08-01), None
patent: 2002-319253 (2002-10-01), None

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