Recording/reproducing apparatus and servo-information recording

Details Recording/reproducing apparatus and servo-information recording Recording/reproducing apparatus and servo-information recording

1997-05-29

1999-11-02

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7814, 360 49, 360 51, G11B 5596, G11B 509

Patent

active

059781700

ABSTRACT:
An index determining unit determines that a current position in a disk medium corresponds to a true index when reaching a true index pattern of servo information recorded in the disk medium. The determination is used for reading predetermined servo information so as to perform a servo control operation of a disk reading/writing head. The disk medium has the true index pattern in a first portion of the disk medium and also untrue index patterns of servo information in a predetermined number of second portions in proximity to the first portion along a track direction. The true index pattern and the untrue index patterns form a predetermined sequence. The index determining unit comprises a reading unit for reading the servo information recorded in the disk medium; a storing unit for storing the read servo information in series; and a determining unit for determining that a current position in the disk medium corresponds to the true index when the stored servo information includes a sequence which is different from the predetermined sequence by a predetermined error.

REFERENCES:
patent: 4495533 (1985-01-01), Chambers
patent: 4933786 (1990-06-01), Wilson
patent: 5047880 (1991-09-01), Ohno
patent: 5068755 (1991-11-01), Hamilton et al.
patent: 5132854 (1992-07-01), Tsuyoshi
patent: 5162954 (1992-11-01), Miller
patent: 5193036 (1993-03-01), Green
patent: 5231545 (1993-07-01), Gold
patent: 5596460 (1997-01-01), Greenberg et al.
patent: 5768044 (1998-06-01), Hetzler et al.

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