JPS6417274A - Position error compensating system - Google Patents

Position error compensating system

Info

Publication number
JPS6417274A
JPS6417274A JP62172487A JP17248787A JPS6417274A JP S6417274 A JPS6417274 A JP S6417274A JP 62172487 A JP62172487 A JP 62172487A JP 17248787 A JP17248787 A JP 17248787A JP S6417274 A JPS6417274 A JP S6417274A
Authority
JP
Japan
Prior art keywords
driving signal
position error
value
sample time
output
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
JP62172487A
Other languages
English (en)
Other versions
JPH0821210B2 (ja
Inventor
Takahiko Tsujisawa
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62172487A priority Critical patent/JPH0821210B2/ja
Priority to EP88110867A priority patent/EP0298475B1/en
Priority to DE8888110867T priority patent/DE3876157T2/de
Priority to US07/217,491 priority patent/US4982297A/en
Publication of JPS6417274A publication Critical patent/JPS6417274A/ja
Publication of JPH0821210B2 publication Critical patent/JPH0821210B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B5/54—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
JP62172487A 1987-07-09 1987-07-09 位置誤差補償方式 Expired - Lifetime JPH0821210B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62172487A JPH0821210B2 (ja) 1987-07-09 1987-07-09 位置誤差補償方式
EP88110867A EP0298475B1 (en) 1987-07-09 1988-07-07 Head positioning system having position error compensation
DE8888110867T DE3876157T2 (de) 1987-07-09 1988-07-07 Kopfpositioniersystem mit positionsfehlerkompensation.
US07/217,491 US4982297A (en) 1987-07-09 1988-07-11 Head positioning system for compensating for erroneous detection of recorded position error information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62172487A JPH0821210B2 (ja) 1987-07-09 1987-07-09 位置誤差補償方式

Publications (2)

Publication Number Publication Date
JPS6417274A true JPS6417274A (en) 1989-01-20
JPH0821210B2 JPH0821210B2 (ja) 1996-03-04

Family

ID=15942896

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62172487A Expired - Lifetime JPH0821210B2 (ja) 1987-07-09 1987-07-09 位置誤差補償方式

Country Status (4)

Country Link
US (1) US4982297A (ja)
EP (1) EP0298475B1 (ja)
JP (1) JPH0821210B2 (ja)
DE (1) DE3876157T2 (ja)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119254A (en) * 1980-09-24 1992-06-02 Quantum Corporation Data transducer position control system for rotating disk data storage equipment
JPH01116926A (ja) * 1987-10-29 1989-05-09 Csk Corp 光メモリカードの書込装置
JPH0348308A (ja) * 1989-03-28 1991-03-01 Canon Inc デジタルサーボ制御装置
ES2129414T3 (es) * 1990-09-18 1999-06-16 Rodime Plc Sistema de control digital para unidades de disco.
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
US5402280A (en) * 1992-05-11 1995-03-28 Quantum Corp. Method and apparatus for runout correction due to disk slip or spindle imbalance
US5402400A (en) * 1992-09-04 1995-03-28 Hitachi, Ltd. Method and apparatus for eliminating external disturbances in a disk drive device
US5432655A (en) * 1993-04-22 1995-07-11 Matsushita Electric Industrial Co., Ltd. Multiple channel magnetic recording and reproducing apparatus
US5384671A (en) * 1993-12-23 1995-01-24 Quantum Corporation PRML sampled data channel synchronous servo detector
JP2647049B2 (ja) * 1995-03-24 1997-08-27 日本電気株式会社 フロッピディスク装置
WO1997015047A1 (en) * 1995-10-20 1997-04-24 Syquest Technology, Inc. Disk drive servo system
JPH10512994A (ja) * 1995-11-13 1998-12-08 サイクエスト・テクノロジー・インコーポレイテッド 取外し式カートリッジディスクドライブ
KR100189532B1 (ko) * 1996-06-24 1999-06-01 윤종용 하드 디스크 드라이브의 위치 에러신호 제어방법
JPH1027444A (ja) * 1996-07-10 1998-01-27 Fujitsu Ltd ディスク装置のポジション感度調整方法
US5875066A (en) * 1996-12-13 1999-02-23 International Business Machines Corporation Method and apparatus for real-time filtering of a position error signal for a disk drive servo system
US6137753A (en) * 1997-04-14 2000-10-24 Oak Technology, Inc. Runout calibration for disc drive system
US6219198B1 (en) 1998-07-14 2001-04-17 International Business Machines Corporation State estimator alteration for odd sample times in a disk drive servo control system
US6381088B1 (en) 1998-11-06 2002-04-30 Acorn Technologies, Inc. Apparatus for developing a dynamic servo signal from data in a magnetic disc drive and method
US6397369B1 (en) 1998-11-06 2002-05-28 Acorn Technologies, Inc. Device for using information about the extent of errors in a signal and method
USRE40413E1 (en) * 1998-11-06 2008-07-01 Purchased Patent Management Llc Method and apparatus for developing a dynamic servo signal from data
US6594103B1 (en) 1999-11-12 2003-07-15 Acorn Technologies, Inc. Read channel generating absolute value servo signal
US6545836B1 (en) * 1999-11-12 2003-04-08 Acorn Technologies, Inc. Servo control apparatus and method using absolute value input signals
KR100662935B1 (ko) * 2005-04-26 2006-12-28 주식회사 히타치엘지 데이터 스토리지 코리아 광디스크장치의 포지션오차 보상방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135217A (en) * 1976-11-02 1979-01-16 Xerox Corporation Utilization of stored run-out information in a track following servo system
US4628379A (en) * 1984-09-25 1986-12-09 Amcodyne Incorporated Disk runout compensator
US4616276A (en) * 1985-07-16 1986-10-07 International Business Machines Corporation Disk file servo control system with fast reduction of repeatable head position error
JPS62145570A (ja) * 1985-12-19 1987-06-29 Victor Co Of Japan Ltd デイスクドライブ装置
US4764914A (en) * 1987-09-11 1988-08-16 Eastman Kodak Company Least squares method and apparatus for determining track eccentricity of a disk

Also Published As

Publication number Publication date
DE3876157D1 (de) 1993-01-07
DE3876157T2 (de) 1993-04-01
US4982297A (en) 1991-01-01
EP0298475B1 (en) 1992-11-25
JPH0821210B2 (ja) 1996-03-04
EP0298475A1 (en) 1989-01-11

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