DE68924173D1 - System mit doppelter referenzschiene. - Google Patents

System mit doppelter referenzschiene.

Info

Publication number
DE68924173D1
DE68924173D1 DE68924173T DE68924173T DE68924173D1 DE 68924173 D1 DE68924173 D1 DE 68924173D1 DE 68924173 T DE68924173 T DE 68924173T DE 68924173 T DE68924173 T DE 68924173T DE 68924173 D1 DE68924173 D1 DE 68924173D1
Authority
DE
Germany
Prior art keywords
reference rail
double reference
double
rail
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.)
Expired - Fee Related
Application number
DE68924173T
Other languages
English (en)
Other versions
DE68924173T2 (de
Inventor
Philip Kenny
Dan Cautis
John Bizjak
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.)
BRIER TECHNOLOGY
Original Assignee
BRIER TECHNOLOGY
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 BRIER TECHNOLOGY filed Critical BRIER TECHNOLOGY
Application granted granted Critical
Publication of DE68924173D1 publication Critical patent/DE68924173D1/de
Publication of DE68924173T2 publication Critical patent/DE68924173T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition 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
    • G11B5/58—Disposition 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
    • G11B5/584—Disposition 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 tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track 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
    • G11B21/106—Track 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition 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
    • G11B5/54—Disposition 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
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5534—Initialisation, calibration, e.g. cylinder "set-up"
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition 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
    • G11B5/54—Disposition 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
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • G11B5/5547—"Seek" control and circuits therefor
DE68924173T 1988-11-10 1989-11-13 System mit doppelter referenzschiene. Expired - Fee Related DE68924173T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/269,585 US4918972A (en) 1988-11-10 1988-11-10 Dual reference track scheme
PCT/US1989/005119 WO1990005280A1 (en) 1988-11-10 1989-11-13 Dual reference track scheme

Publications (2)

Publication Number Publication Date
DE68924173D1 true DE68924173D1 (de) 1995-10-12
DE68924173T2 DE68924173T2 (de) 1996-05-15

Family

ID=23027879

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68924173T Expired - Fee Related DE68924173T2 (de) 1988-11-10 1989-11-13 System mit doppelter referenzschiene.

Country Status (5)

Country Link
US (1) US4918972A (de)
EP (1) EP0447460B1 (de)
AU (1) AU4801690A (de)
DE (1) DE68924173T2 (de)
WO (1) WO1990005280A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0484907A2 (de) * 1990-11-09 1992-05-13 Brier Technology Methode zur Positionierung eines Magnetkopfes unter Verwendung eines kapazitiven Wandlers
US5455818A (en) * 1992-01-22 1995-10-03 Brother Kogyo Kabushiki Kaisha Optical recording medium
US5777816A (en) * 1993-05-12 1998-07-07 Seagate Technology, Inc. Data track following method for disc drives
JP3081174B2 (ja) * 1997-07-08 2000-08-28 株式会社東京精密 真円度測定機及びその検出器感度校正方法
US6606216B1 (en) * 1999-05-05 2003-08-12 Maxtor Corporation Transducer head with separate data and servo read elements
US6600621B1 (en) * 2000-05-31 2003-07-29 Hitachi Global Storage Technologies Netherlands B.V. Techniques for multitrack positioning and controlling error growth in self-servowriting systems
US6721120B2 (en) 2000-06-20 2004-04-13 Seagate Technology Llc Prediction and cancellation of cage frequency in a disc drive
US7499234B1 (en) * 2003-06-02 2009-03-03 Maxtor Corporation Method and apparatus for modifying spiral profile using reference tracks written onto a disk surface of a disk drive
JP2005174450A (ja) * 2003-12-10 2005-06-30 Sony Corp リニア型テープストレージ用磁気ヘッド装置
US7145304B1 (en) * 2005-08-29 2006-12-05 Zoran Corporation Rotating storage media control loops having adaptive feed forward insertion of signals including harmonics
US7760465B2 (en) 2005-10-25 2010-07-20 International Business Machines Corporation Magnetic head having selectively defined reader gap thicknesses
US7676282B2 (en) * 2005-12-02 2010-03-09 International Business Machines Corporation Compression of servo control logging entries
US7667920B2 (en) * 2007-12-28 2010-02-23 Hitachi Global Storage Technologies Netherlands B.V. Correcting a track pitch error with a subsequent servo-write pass
WO2014209231A1 (en) * 2013-06-26 2014-12-31 Agency For Science, Technology And Research Read assembly, data storage system, and methods of using the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800317A (en) * 1972-07-31 1974-03-26 Caelus Memories Inc Servo system and method for positioning an element at precisely spaced positions
US4027338A (en) * 1975-04-28 1977-05-31 Burroughs Corporation Transducer positioning system for providing coarse positioning
US4371960A (en) * 1980-12-24 1983-02-01 Magnetic Peripherals Inc. Measurement of disc servo head/data head misalignment
US4701815A (en) * 1985-03-11 1987-10-20 Sony Corporation Tracking servo system for disc memory
JPS62145570A (ja) * 1985-12-19 1987-06-29 Victor Co Of Japan Ltd デイスクドライブ装置

Also Published As

Publication number Publication date
DE68924173T2 (de) 1996-05-15
AU4801690A (en) 1990-05-28
EP0447460A1 (de) 1991-09-25
WO1990005280A1 (en) 1990-05-17
EP0447460A4 (en) 1992-12-02
EP0447460B1 (de) 1995-09-06
US4918972A (en) 1990-04-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee