DE69020381D1 - Kopfaustausch für ein Plattenantriebssystem. - Google Patents

Kopfaustausch für ein Plattenantriebssystem.

Info

Publication number
DE69020381D1
DE69020381D1 DE69020381T DE69020381T DE69020381D1 DE 69020381 D1 DE69020381 D1 DE 69020381D1 DE 69020381 T DE69020381 T DE 69020381T DE 69020381 T DE69020381 T DE 69020381T DE 69020381 D1 DE69020381 D1 DE 69020381D1
Authority
DE
Germany
Prior art keywords
disk drive
drive system
head replacement
replacement
head
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
DE69020381T
Other languages
English (en)
Other versions
DE69020381T2 (de
Inventor
Tatsuro Sasamoto
Masamichi Suzuki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69020381D1 publication Critical patent/DE69020381D1/de
Publication of DE69020381T2 publication Critical patent/DE69020381T2/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
    • 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
    • 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"
DE69020381T 1989-02-20 1990-02-20 Kopfaustausch für ein Plattenantriebssystem. Expired - Fee Related DE69020381T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1041226A JPH02220262A (ja) 1989-02-20 1989-02-20 ディスク装置のヘッド切替方式

Publications (2)

Publication Number Publication Date
DE69020381D1 true DE69020381D1 (de) 1995-08-03
DE69020381T2 DE69020381T2 (de) 1995-11-02

Family

ID=12602497

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69020381T Expired - Fee Related DE69020381T2 (de) 1989-02-20 1990-02-20 Kopfaustausch für ein Plattenantriebssystem.

Country Status (4)

Country Link
US (1) US5109502A (de)
EP (1) EP0384833B1 (de)
JP (1) JPH02220262A (de)
DE (1) DE69020381T2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2642518B2 (ja) * 1990-12-21 1997-08-20 富士通株式会社 磁気ヘッド位置信号のオフセット補正方式
JP2653933B2 (ja) * 1991-04-30 1997-09-17 富士通株式会社 磁気ディスク装置のオフセット検出方式
AU2304392A (en) * 1991-06-26 1993-01-25 Maxtor Corporation Method and apparatus for detecting data track misregistration
JP2702845B2 (ja) * 1992-03-30 1998-01-26 富士通株式会社 磁気ディスク装置
US5455724A (en) * 1992-03-31 1995-10-03 Fujitsu Limited Method of compensating offtrack in disk unit
US5526201A (en) * 1992-03-31 1996-06-11 Fujitsu Limited Magnetic disk apparatus
JP2596315B2 (ja) * 1993-05-21 1997-04-02 日本電気株式会社 磁気ディスク用ヘッド位置決め制御装置
US5500776A (en) * 1993-12-16 1996-03-19 Seagate Technology, Inc. Self-calibration for computer disk read/write offsets
JPH07254242A (ja) * 1994-03-16 1995-10-03 Hitachi Ltd ヘッド切り換え制御装置
US6084742A (en) * 1994-04-06 2000-07-04 Fujitsu Limited Drive control apparatus for a disk drive
JPH08293174A (ja) * 1995-04-21 1996-11-05 Fujitsu Ltd 許容オフトラック量設定方法及び装置並びにディスク装置
KR100224918B1 (ko) * 1995-09-06 1999-10-15 윤종용 디스크 기록면들의 트랙오프셋에 의한 헤드간 트랙위치 오프셋 보상장치 및 그 방법
US5805787A (en) * 1995-12-29 1998-09-08 Emc Corporation Disk based disk cache interfacing system and method
JP3253535B2 (ja) * 1996-09-20 2002-02-04 富士通株式会社 ディスク装置のヘッド位置決め制御装置及び磁気ディスク装置
US6067206A (en) * 1997-11-18 2000-05-23 Western Digital Corporation Method and apparatus to compensate for servo wedge rotational offset after a head switch
KR19990057748A (ko) * 1997-12-30 1999-07-15 윤종용 하드 디스크 드라이브의 스큐 최적화 방법
US20090313074A1 (en) * 2008-06-11 2009-12-17 International Business Machines Corporation Enhanced viewing/updating of calendar entries based upon relationships between a viewer and a calendar owner and a relative importance value of the calendar entries
JP2013211084A (ja) * 2012-03-30 2013-10-10 Toshiba Corp ２段アクチュエータを備えた磁気ディスク装置及び同装置におけるヘッド位置推定方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549439A (en) * 1976-07-06 1979-08-08 Data Recording Instr Co Magnetic disc storage devices
US4144583A (en) * 1977-06-06 1979-03-13 Digital Equipment Corporation Secondary storage facility with means for monitoring error conditions
JPS57176518A (en) * 1981-04-22 1982-10-29 Mitsubishi Electric Corp Magnetic disc device
JPS57186215A (en) * 1981-05-11 1982-11-16 Mitsubishi Electric Corp Magnetic disc device
JPS6063704A (ja) * 1983-09-19 1985-04-12 Hitachi Ltd 磁気記録装置
JP2521432B2 (ja) * 1986-03-19 1996-08-07 富士通株式会社 デイスク装置

Also Published As

Publication number Publication date
DE69020381T2 (de) 1995-11-02
JPH02220262A (ja) 1990-09-03
EP0384833B1 (de) 1995-06-28
US5109502A (en) 1992-04-28
EP0384833A2 (de) 1990-08-29
EP0384833A3 (de) 1992-03-04

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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