CA2366415A1 - Radial self-propagation pattern generation for disk file servowriting - Google Patents

Radial self-propagation pattern generation for disk file servowriting Download PDF

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Publication number
CA2366415A1
CA2366415A1 CA 2366415 CA2366415A CA2366415A1 CA 2366415 A1 CA2366415 A1 CA 2366415A1 CA 2366415 CA2366415 CA 2366415 CA 2366415 A CA2366415 A CA 2366415A CA 2366415 A1 CA2366415 A1 CA 2366415A1
Authority
CA
Canada
Prior art keywords
position error
transition
pattern generation
disk file
propagation pattern
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2366415
Other languages
French (fr)
Other versions
CA2366415C (en
Inventor
Timothy Joseph Chainer
Mark Delorman Schultz
Bucknell C. Webb
Edward John Yarmchuk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HGST Netherlands BV
Original Assignee
International Business Machines Corporation
Timothy Joseph Chainer
Mark Delorman Schultz
Bucknell C. Webb
Edward John Yarmchuk
Hitachi Global Storage Technologies Netherlands B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corporation, Timothy Joseph Chainer, Mark Delorman Schultz, Bucknell C. Webb, Edward John Yarmchuk, Hitachi Global Storage Technologies Netherlands B.V. filed Critical International Business Machines Corporation
Priority claimed from CA002163689A external-priority patent/CA2163689C/en
Publication of CA2366415A1 publication Critical patent/CA2366415A1/en
Application granted granted Critical
Publication of CA2366415C publication Critical patent/CA2366415C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00Head arrangements not specific to the method of recording or reproducing
    • G11B21/02Driving or moving of heads
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55Track change, selection or acquisition by displacement of the head
    • G11B5/5521Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553Details
    • G11B5/5534Initialisation, calibration, e.g. cylinder "set-up"
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00Head arrangements not specific to the method of recording or reproducing
    • G11B21/02Driving or moving of heads
    • G11B21/10Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00Head arrangements not specific to the method of recording or reproducing
    • G11B21/02Driving or moving of heads
    • G11B21/10Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
    • G11B21/106Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following on disks
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55Track change, selection or acquisition by displacement of the head
    • G11B5/5521Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633Servo formatting
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633Servo formatting
    • G11B5/59644Acquisition or selection of servo format from a system reference
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633Servo formatting
    • G11B5/59655Sector, sample or burst servo format

Abstract

During a write revolution of a storage medium, a transition is written on the storage medium while servoing on another transition previously recorded on the storage medium. During that write revolution, a position error signal corresponding to the position error of the transducer relative to the previously recorded transition is determined. That position error signal is then stored, during the write revolution, to be used in computing a reference track value associated with the transition being written to correct for the position error. Additionally, a product servo-pattern is written, which includes an embodying of the position error therein.
CA002366415A 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting Expired - Fee Related CA2366415C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/349,028 US5612833A (en) 1994-12-02 1994-12-02 Radial self-propagation pattern generation for disk file servowriting
CA002163689A CA2163689C (en) 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002163689A Division CA2163689C (en) 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting

Publications (2)

Publication Number Publication Date
CA2366415A1 true CA2366415A1 (en) 1996-06-03
CA2366415C CA2366415C (en) 2002-07-16

Family

ID=23370589

Family Applications (3)

Application Number Title Priority Date Filing Date
CA002365103A Expired - Fee Related CA2365103C (en) 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting
CA002366415A Expired - Fee Related CA2366415C (en) 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting
CA002365155A Expired - Fee Related CA2365155C (en) 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002365103A Expired - Fee Related CA2365103C (en) 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002365155A Expired - Fee Related CA2365155C (en) 1994-12-02 1995-11-24 Radial self-propagation pattern generation for disk file servowriting

Country Status (5)

Country Link
US (3) US5612833A (en)
KR (1) KR0165711B1 (en)
CA (3) CA2365103C (en)
MY (1) MY134565A (en)
SG (1) SG34301A1 (en)

Families Citing this family (123)

* Cited by examiner, † Cited by third party
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US5659436A (en) 1997-08-19
US5612833A (en) 1997-03-18
KR0165711B1 (en) 1999-03-20
CA2365103C (en) 2002-07-16
CA2365155C (en) 2002-08-20
CA2365155A1 (en) 1996-06-03
KR960025629A (en) 1996-07-20
US5844742A (en) 1998-12-01
SG34301A1 (en) 1996-12-06
MY134565A (en) 2007-12-31
CA2365103A1 (en) 1996-06-03

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