SG126843A1 - Method and apparatus for servo control in a disk drive - Google Patents

Method and apparatus for servo control in a disk drive

Info

Publication number
SG126843A1
SG126843A1 SG200601944A SG200601944A SG126843A1 SG 126843 A1 SG126843 A1 SG 126843A1 SG 200601944 A SG200601944 A SG 200601944A SG 200601944 A SG200601944 A SG 200601944A SG 126843 A1 SG126843 A1 SG 126843A1
Authority
SG
Singapore
Prior art keywords
disk drive
servo
servo control
tangent
basis
Prior art date
Application number
SG200601944A
Other languages
English (en)
Inventor
Makoto Asakura
Masahide Yatsu
Original Assignee
Toshiba Kk
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 Toshiba Kk filed Critical Toshiba Kk
Publication of SG126843A1 publication Critical patent/SG126843A1/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
    • G11B5/58—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
    • G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
SG200601944A 2005-04-27 2006-03-27 Method and apparatus for servo control in a disk drive SG126843A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005129580A JP2006309843A (ja) 2005-04-27 2005-04-27 ディスクドライブ及びサーボ制御方法

Publications (1)

Publication Number Publication Date
SG126843A1 true SG126843A1 (en) 2006-11-29

Family

ID=37195352

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200601944A SG126843A1 (en) 2005-04-27 2006-03-27 Method and apparatus for servo control in a disk drive

Country Status (4)

Country Link
US (1) US7312946B2 (ja)
JP (1) JP2006309843A (ja)
CN (1) CN100433131C (ja)
SG (1) SG126843A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008176865A (ja) * 2007-01-19 2008-07-31 Fujitsu Ltd 記憶装置、制御装置
WO2008139603A1 (ja) * 2007-05-14 2008-11-20 Fujitsu Limited 記憶装置、ヘッド位置検出方法及び制御回路
US7719784B2 (en) * 2007-08-31 2010-05-18 Toshiba Storage Device Corporation Data storage device
US7859778B1 (en) * 2008-02-21 2010-12-28 Seagate Technology Llc Deterministic phase mismatch correction in servo position estimation systems
JP5162007B2 (ja) * 2011-06-10 2013-03-13 株式会社東芝 位置復調装置、及び位置復調方法
JP2014059932A (ja) 2012-09-19 2014-04-03 Toshiba Corp 磁気ディスク装置および復調位置補正方法
US8970981B2 (en) * 2013-03-15 2015-03-03 Lsi Corporation Hardware support of servo format with two preamble fields
US8848303B1 (en) 2013-05-13 2014-09-30 Kabushiki Kaisha Toshiba Disk storage apparatus and method for servo demodulation
US8908303B1 (en) 2013-07-30 2014-12-09 Kabushiki Kaisha Toshiba Method for servo demodulation and disk storage apparatus
CN104658555A (zh) 2013-11-25 2015-05-27 株式会社东芝 头位置解调方法及磁盘装置
JP2019160377A (ja) 2018-03-15 2019-09-19 株式会社東芝 磁気ディスク装置及びヘッド位置の補正方法
JP2020047342A (ja) 2018-09-19 2020-03-26 株式会社東芝 磁気ディスク装置及びヘッド位置の補正方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5343340A (en) 1992-12-31 1994-08-30 International Business Machines Corporation Digital servo signal demodulation method and apparatus utilizing a partial-response maximum-likelihood (PRML) channel in a disk file
US5717538A (en) * 1995-01-20 1998-02-10 International Business Machines Corporation Asynchronous position error signal detector employing weighted accumulation for use in servo system
US5867341A (en) * 1996-01-30 1999-02-02 Seagate Technology, Inc. Disc drive system using multiple pairs of embedded servo bursts
US6122117A (en) * 1998-02-04 2000-09-19 Fujitsu Limited Method for digitally demodulating position signals recorded on recording media
CN1117348C (zh) 1998-03-13 2003-08-06 三星电子株式会社 提供伺服环路增益校准的方法和装置
JP3743698B2 (ja) * 1998-07-10 2006-02-08 富士通株式会社 記憶装置及びそのポジション感度設定方法
US6188484B1 (en) * 1998-10-29 2001-02-13 Maxtor Corporation Method and apparatus for measuring angular displacement of an actuator arm relative to a reference position
JP3340077B2 (ja) * 1998-11-30 2002-10-28 富士通株式会社 サーボ制御方法及び情報記憶装置
JP2000306348A (ja) * 1999-04-23 2000-11-02 Hitachi Ltd 磁気ディスク装置及びヘッド位置信号の補正方法
US7430082B2 (en) * 2001-06-28 2008-09-30 Stmicroelectronics, Inc. Circuit and method for demodulating a servo position burst
US7206149B2 (en) * 2001-06-28 2007-04-17 Stmicroelectronics, Inc. Circuit and method for detecting a spin-up wedge and a corresponding servo wedge on spin up of a data-storage disk
US6738205B1 (en) * 2001-07-08 2004-05-18 Maxtor Corporation Self-writing of servo patterns in disk drives
US7199956B1 (en) * 2001-09-21 2007-04-03 Maxtor Corporation Disk drive self-servo writing using fundamental and higher harmonics of a printed reference pattern
JP4016872B2 (ja) 2003-04-07 2007-12-05 株式会社タツノ・メカトロニクス 懸垂式セルフ給油所

Also Published As

Publication number Publication date
US7312946B2 (en) 2007-12-25
CN1855234A (zh) 2006-11-01
JP2006309843A (ja) 2006-11-09
CN100433131C (zh) 2008-11-12
US20060245105A1 (en) 2006-11-02

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