HK1000069A1 - Method and apparatus for positioning transducers - Google Patents

Method and apparatus for positioning transducers Download PDF

Info

Publication number
HK1000069A1
HK1000069A1 HK97101600A HK97101600A HK1000069A1 HK 1000069 A1 HK1000069 A1 HK 1000069A1 HK 97101600 A HK97101600 A HK 97101600A HK 97101600 A HK97101600 A HK 97101600A HK 1000069 A1 HK1000069 A1 HK 1000069A1
Authority
HK
Hong Kong
Prior art keywords
read
track
write
actuator
offset
Prior art date
Application number
HK97101600A
Other languages
German (de)
English (en)
French (fr)
Chinese (zh)
Other versions
HK1000069B (en
Inventor
Henry Brown Dana
Albert Cunningham Earl
Jack Erickson Kevin
Hunt Estry Richard
William Glaser Thomas
David Hagen Mark
Hjalmar Ottesen Hal
Curtis Palmer Dean
Jeffrey Stephenson John
Original Assignee
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 Hitachi Global Storage Technologies Netherlands B.V. filed Critical Hitachi Global Storage Technologies Netherlands B.V.
Publication of HK1000069B publication Critical patent/HK1000069B/en
Publication of HK1000069A1 publication Critical patent/HK1000069A1/en

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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
    • 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
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • 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
    • G11B21/08—Track changing or selecting during transducing operation
    • 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
    • G11B5/488—Disposition of heads
    • G11B5/4886—Disposition of heads relative to rotating disc
    • 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
    • G11B5/58—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
    • G11B5/596—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 disks
    • G11B5/59633—Servo formatting
    • G11B5/59644—Acquisition or selection of servo format from a system reference
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers

Landscapes

  • Moving Of Heads (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
HK97101600A 1990-10-02 1997-07-23 Method and apparatus for positioning transducers HK1000069A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59159690A 1990-10-02 1990-10-02

Publications (2)

Publication Number Publication Date
HK1000069B HK1000069B (en) 1997-11-07
HK1000069A1 true HK1000069A1 (en) 1997-11-07

Family

ID=24367098

Family Applications (1)

Application Number Title Priority Date Filing Date
HK97101600A HK1000069A1 (en) 1990-10-02 1997-07-23 Method and apparatus for positioning transducers

Country Status (10)

Country Link
US (1) US5682274A (OSRAM)
EP (1) EP0479703B1 (OSRAM)
JP (1) JPH04232610A (OSRAM)
KR (1) KR960015921B1 (OSRAM)
CN (1) CN1028574C (OSRAM)
DE (1) DE69125447T2 (OSRAM)
HK (1) HK1000069A1 (OSRAM)
MY (1) MY110421A (OSRAM)
SG (1) SG46192A1 (OSRAM)
TW (1) TW226467B (OSRAM)

Families Citing this family (30)

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Publication number Priority date Publication date Assignee Title
US5715105A (en) 1992-09-28 1998-02-03 Hitachi, Ltd. Method of and apparatus for recording on and reproducing from disk-type recording medium having recording tracks with sectors each having an ID area and a data area
JP3395235B2 (ja) * 1993-02-09 2003-04-07 ソニー株式会社 情報記録ディスク
US5444589A (en) * 1993-12-02 1995-08-22 International Business Machines Corporation Rotary actuator disk drive with identical dual-element read/write transducers
DE4447813B4 (de) * 1993-12-07 2006-05-24 Fujitsu Ltd., Kawasaki Aufzeichnungs-/Wiedergabevorrichtung
KR950020658A (ko) * 1993-12-07 1995-07-24 새끼자와 다다시 자기디스크장치
JP3135447B2 (ja) * 1994-01-27 2001-02-13 富士通株式会社 磁気ディスクドライブの制御方法及びその装置
JPH07320247A (ja) * 1994-05-23 1995-12-08 Internatl Business Mach Corp <Ibm> Ｍｒヘッド用サーボ方法及びハードディスクシステム
US5654842A (en) * 1994-08-30 1997-08-05 Sony Corporation Head displacement measuring method and apparatus and data recording/reproducing method and apparatus
US6252732B1 (en) * 1994-12-01 2001-06-26 International Business Machines Corporation Method and apparatus for correcting systematic errors in timing pattern generation
US6898035B1 (en) * 1994-12-01 2005-05-24 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for correcting for systematic errors in timing pattern generation
US6078450A (en) * 1994-12-01 2000-06-20 International Business Machines Corporation Method and apparatus for correcting for random errors in timing pattern generation
CA2223410A1 (en) * 1995-06-06 1996-12-12 James A.. Valent Mr head differential micro-jog
GB2332523B (en) * 1997-12-16 2002-04-10 Havant Internat Ltd Tool,apparatus and method for testing a fixture
JP3080364B2 (ja) * 1997-12-25 2000-08-28 インターナショナル・ビジネス・マシーンズ・コーポレ−ション ディスクドライブ装置、シーク制御装置
US6195230B1 (en) 1998-04-27 2001-02-27 Intel Corporation Disk head assembly with multiple read and/or write transducers for improved performance
US6320718B1 (en) * 1999-01-07 2001-11-20 Western Digital Technologies, Inc. Disk drive with zero read offset in reserved area and method of making same
US6545841B1 (en) * 1999-02-08 2003-04-08 Seagate Technology Llc Strategy for read/write spacing requirement
US6765737B1 (en) 1999-04-21 2004-07-20 Seagate Technology Llc Variable track densities on a recording medium to compensate for non-repeatable runout (NRRO) error
US6359749B1 (en) 1999-10-15 2002-03-19 International Business Machines Corporation Dual element head with radial offset optimized for minimal write-to-read track error
US6631046B2 (en) * 2000-01-10 2003-10-07 Seagate Technology Llc Servo track writing using extended copying with head offset
US6369969B1 (en) * 2001-02-28 2002-04-09 Western Digital Technologies, Inc. Disk drive for detecting a polarity error of a magnetoresistive head by detecting a sync mark
US7265921B2 (en) * 2004-02-10 2007-09-04 Hitachi Global Storage Technologies Netherlands B.V. Method to increase the amount of customer data on a hard disk drive
US7372276B2 (en) * 2005-02-16 2008-05-13 Goldak, Inc. Digital locating system and device for underground object detection
US7256956B2 (en) * 2005-03-16 2007-08-14 Matsushita Electric Industrial Co., Ltd. Propagation self servowrite using self-written spiral signals for in-process calibration
CN1862743B (zh) * 2005-05-13 2012-01-18 大日科技股份有限公司 滚珠开关
US8009388B2 (en) * 2006-10-10 2011-08-30 Seagate Technology Llc Method for increasing storage capacity and a transducer configuration incorporating the same
US7768736B2 (en) 2007-03-30 2010-08-03 Seagate Technology Llc Certifying while servowriting media
KR20080108768A (ko) * 2007-06-11 2008-12-16 삼성전자주식회사 헤드슬라이더 및 이를 구비한 하드디스크 드라이브
WO2010028377A1 (en) * 2008-09-05 2010-03-11 Doug Carson & Associates, Inc. Compensation for different transducer translation path geometries
US20110134558A1 (en) * 2009-12-08 2011-06-09 Kabushiki Kaisha Toshiba Disk device, head distance calculation method, and offset control method

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388655A (en) * 1977-09-13 1983-06-14 Zenzefilis George E Method and apparatus for recording and reproducing video and sound
JPS5860423A (ja) * 1981-10-07 1983-04-09 Hitachi Metals Ltd 磁気ヘツド装置
JPS58196619A (ja) * 1982-05-10 1983-11-16 Hitachi Ltd 磁気ヘツドおよびその製造方法
JPS58215717A (ja) * 1982-06-09 1983-12-15 Hitachi Ltd 磁気ヘツド
JPS6061910A (ja) * 1983-09-16 1985-04-09 Mitsubishi Electric Corp 磁気ヘツド組立体
FR2557722B1 (fr) * 1983-12-30 1986-04-11 Bull Sa Procede d'ecriture d'informations sur un support d'enregistrement
JPS62295213A (ja) * 1986-06-13 1987-12-22 Sony Corp 磁気デイスク装置
JPS6398820A (ja) * 1986-10-15 1988-04-30 Sony Corp 磁気デイスクの記録方式
US4802033A (en) * 1986-11-07 1989-01-31 Eastman Kodak Company Predictive positioning offset compensation for high TPI disk systems
JPH01154311A (ja) * 1987-12-11 1989-06-16 Toshiba Corp 磁気ディスク装置
JPH01184675A (ja) * 1988-01-11 1989-07-24 Nec Corp 磁気記録装置およびトラックアクセス方式
US4969059A (en) * 1988-03-28 1990-11-06 Rigidyne Corporation Offset nulling system for computer disk drives
US4945427A (en) * 1988-06-13 1990-07-31 International Business Machines Corporation Magnetic disk recording with variable track width and variable track density
US5073833A (en) * 1989-11-13 1991-12-17 International Business Machines Corporation Dual sector servo system for disk file with separate read and write heads
US5235478A (en) * 1989-12-15 1993-08-10 Sony Corporation Disc drive apparatus with servo tracks offset from data tracks

Also Published As

Publication number Publication date
US5682274A (en) 1997-10-28
KR960015921B1 (ko) 1996-11-23
EP0479703B1 (en) 1997-04-02
CN1028574C (zh) 1995-05-24
EP0479703A1 (en) 1992-04-08
MY110421A (en) 1998-05-30
JPH04232610A (ja) 1992-08-20
SG46192A1 (en) 1998-02-20
TW226467B (OSRAM) 1994-07-11
DE69125447D1 (de) 1997-05-07
CN1060919A (zh) 1992-05-06
DE69125447T2 (de) 1997-09-25
KR920008679A (ko) 1992-05-28

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20060906