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SG97985A1 - Control method and apparatus of magnetic disc device, recording medium, and inspection method and apparatus of magnetic disc device - Google Patents

Control method and apparatus of magnetic disc device, recording medium, and inspection method and apparatus of magnetic disc device

Info

Publication number
SG97985A1
SG97985A1 SG200006868A SG200006868A SG97985A1 SG 97985 A1 SG97985 A1 SG 97985A1 SG 200006868 A SG200006868 A SG 200006868A SG 200006868 A SG200006868 A SG 200006868A SG 97985 A1 SG97985 A1 SG 97985A1
Authority
SG
Singapore
Prior art keywords
magnetic disc
disc device
recording medium
control method
inspection method
Prior art date
Application number
SG200006868A
Other languages
English (en)
Inventor
Takaoka Tetsuro
Original Assignee
Matsushita Electric Ind Co 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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of SG97985A1 publication Critical patent/SG97985A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • 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
    • G11B5/59627—Aligning for runout, eccentricity or offset compensation
    • 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
    • G11B5/59605—Circuits
    • G11B5/59611—Detection or processing of peak/envelop signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
SG200006868A 2000-10-03 2000-11-28 Control method and apparatus of magnetic disc device, recording medium, and inspection method and apparatus of magnetic disc device SG97985A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000303355A JP2002117636A (ja) 2000-10-03 2000-10-03 磁気ディスク装置の制御装置、方法、記録媒体及び磁気ディスク装置の検査方法、装置

Publications (1)

Publication Number Publication Date
SG97985A1 true SG97985A1 (en) 2003-08-20

Family

ID=18784563

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200006868A SG97985A1 (en) 2000-10-03 2000-11-28 Control method and apparatus of magnetic disc device, recording medium, and inspection method and apparatus of magnetic disc device

Country Status (6)

Country Link
US (1) US6603616B2 (zh)
JP (1) JP2002117636A (zh)
KR (1) KR100552542B1 (zh)
CN (2) CN1186779C (zh)
SG (1) SG97985A1 (zh)
TW (1) TW501102B (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100459719B1 (ko) * 2002-08-28 2004-12-03 삼성전자주식회사 하드 디스크 드라이브의 자기기록폭 측정 방법
KR100555523B1 (ko) 2003-10-31 2006-03-03 삼성전자주식회사 디스크 드라이브의 트랙 탐색 서보 제어 방법 및 장치
JP4015123B2 (ja) * 2004-02-25 2007-11-28 株式会社東芝 ディスク装置、サーボパターン書き込み方法
KR100604927B1 (ko) 2005-01-13 2006-07-28 삼성전자주식회사 하드디스크 드라이브의 ｔｐｉ 결정 방법 및 이에 적합한기록 매체
KR100712514B1 (ko) * 2005-06-29 2007-05-02 삼성전자주식회사 하드디스크 드라이브의 ｒｒｏ 산출 방법, 이를 이용한ｒｒｏ 보상값 산출 방법, 그리고 이에 적합한 기록매체들
CN103117075B (zh) * 2012-12-27 2015-08-26 华为技术有限公司 磁盘块检查方法及装置
US9064526B1 (en) 2014-05-08 2015-06-23 Kabushiki Kaisha Toshiba Magnetic disk apparatus and off-track detection method
US10008229B2 (en) * 2016-01-05 2018-06-26 Western Digital Technologies, Inc Implementing enhanced track following during read back using head asymmetry metrics in hard disk drives

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863508A2 (en) * 1997-03-06 1998-09-09 Fujitsu Limited Head position detecting method and disk device
US5909661A (en) * 1997-05-30 1999-06-01 Hewlett-Packard Company Method and apparatus for decomposing drive error signal noise sources
US6002542A (en) * 1996-08-07 1999-12-14 Sgs-Thomson Microelectronics S.R.L. Magnetic disc read head positioning device and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07201146A (ja) * 1993-12-28 1995-08-04 Toshiba Corp 磁気ディスク装置のヘッド位置決め制御装置とヘッド位置決め制御方法
JPH1083639A (ja) * 1996-09-10 1998-03-31 Hitachi Ltd 磁気ディスク装置
US5825318A (en) * 1996-12-19 1998-10-20 Quantum Corporation Data and servo sampling in synchronous data detection channel
US5914594A (en) * 1997-03-18 1999-06-22 Samsung Electronics, Ltd. Method for characterizing a read head based on write-induced magnetic read center shifts and read sensitivity changes in the read head
JP2000260138A (ja) * 1999-03-09 2000-09-22 Matsushita Electric Ind Co Ltd データ記録再生装置、ヘッド位置認識方法、及びヘッド位置算出方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6002542A (en) * 1996-08-07 1999-12-14 Sgs-Thomson Microelectronics S.R.L. Magnetic disc read head positioning device and method
EP0863508A2 (en) * 1997-03-06 1998-09-09 Fujitsu Limited Head position detecting method and disk device
US5909661A (en) * 1997-05-30 1999-06-01 Hewlett-Packard Company Method and apparatus for decomposing drive error signal noise sources

Also Published As

Publication number Publication date
US6603616B2 (en) 2003-08-05
CN1346127A (zh) 2002-04-24
CN1577502A (zh) 2005-02-09
CN1186779C (zh) 2005-01-26
US20020057518A1 (en) 2002-05-16
TW501102B (en) 2002-09-01
JP2002117636A (ja) 2002-04-19
KR100552542B1 (ko) 2006-02-14
CN1316452C (zh) 2007-05-16
KR20020026783A (ko) 2002-04-12

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