DE60328569D1 - Servospurschreibgerät und Verfahren dafür - Google Patents

Servospurschreibgerät und Verfahren dafür

Info

Publication number
DE60328569D1
DE60328569D1 DE60328569T DE60328569T DE60328569D1 DE 60328569 D1 DE60328569 D1 DE 60328569D1 DE 60328569 T DE60328569 T DE 60328569T DE 60328569 T DE60328569 T DE 60328569T DE 60328569 D1 DE60328569 D1 DE 60328569D1
Authority
DE
Germany
Prior art keywords
method therefor
servo recorder
recorder
servo
therefor
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
DE60328569T
Other languages
English (en)
Inventor
Tohru Harada
Taizan Kobayashi
Toshinori Kasuga
Eiji Takada
Hirofumi Ohsawa
Masanori Fukushi
Yukio Ozaki
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 DE60328569D1 publication Critical patent/DE60328569D1/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
    • 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
DE60328569T 2002-08-30 2003-08-22 Servospurschreibgerät und Verfahren dafür Expired - Fee Related DE60328569D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002252937A JP4170707B2 (ja) 2002-08-30 2002-08-30 サーボトラック書込装置及び方法

Publications (1)

Publication Number Publication Date
DE60328569D1 true DE60328569D1 (de) 2009-09-10

Family

ID=31492634

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60328569T Expired - Fee Related DE60328569D1 (de) 2002-08-30 2003-08-22 Servospurschreibgerät und Verfahren dafür

Country Status (5)

Country Link
US (1) US7233453B2 (de)
EP (1) EP1394777B1 (de)
JP (1) JP4170707B2 (de)
CN (1) CN1292432C (de)
DE (1) DE60328569D1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4481137B2 (ja) * 2003-11-13 2010-06-16 アスモ株式会社 モータ、回転制御装置、及び回転検出回路
KR20060014155A (ko) * 2004-08-10 2006-02-15 삼성전자주식회사 디스크 기록 장치
US7133229B2 (en) * 2005-02-10 2006-11-07 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk drive with patterned media and compensation for write-clock timing error caused by rotational disturbances
US7646557B2 (en) * 2005-07-05 2010-01-12 Xyratex Technology Limited Methods and apparatus for generating a clock signal, for writing servo tracks, and for characterising timing errors in a servo track writer
JP4489031B2 (ja) * 2006-02-17 2010-06-23 東芝ストレージデバイス株式会社 ディスク装置補正システム、情報管理装置、原盤作製装置および原盤作製方法
US7450335B2 (en) * 2006-08-09 2008-11-11 Hitachi Global Storage Technologies Netherlands B.V. Reducing read/write head track misregistration
JP2008146724A (ja) * 2006-12-07 2008-06-26 Toshiba Corp ディスク記憶装置及びサーボテスト方法
JP2008226386A (ja) * 2007-03-14 2008-09-25 Fujitsu Ltd 記憶装置、制御装置、振動検出方法
JP4858919B2 (ja) * 2008-05-09 2012-01-18 東芝ストレージデバイス株式会社 記憶装置、記憶装置の制御回路およびサーボライト方式識別方法
JP5231298B2 (ja) * 2009-03-18 2013-07-10 富士フイルム株式会社 電子ビーム描画方法および装置
JP2011123966A (ja) * 2009-12-12 2011-06-23 Hitachi Global Storage Technologies Netherlands Bv ディスクへサーボ・ライト・トラックを書き込む方法及びディスク・ドライブ
GB2500693A (en) * 2012-03-30 2013-10-02 Ibm Vibration control in data storage devices
CN103384445A (zh) * 2013-07-29 2013-11-06 福建星网锐捷网络有限公司 一种信号选择电路和印制电路板
WO2015048677A1 (en) 2013-09-30 2015-04-02 Marvell World Trade Ltd. Generating position error signal based on data tracks for magnetic data storage
WO2015047730A1 (en) * 2013-09-30 2015-04-02 Marvell World Trade Ltd. Method and apparatus for determining position of multiple drive heads
JP6560719B2 (ja) * 2017-07-27 2019-08-14 ファナック株式会社 数値制御装置および数値制御方法
US10832716B2 (en) * 2018-12-19 2020-11-10 Marvell Asia Pte, Ltd. Zone self servo writing with synchronized parallel clocks

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62234280A (ja) * 1986-04-04 1987-10-14 Mitsubishi Electric Corp 磁気デイスク装置
JP2996005B2 (ja) 1991-10-31 1999-12-27 日本電気株式会社 磁気ディスク位置決め信号書き込み装置
US6057976A (en) * 1994-04-28 2000-05-02 Canon Kabushiki Kaisha Apparatus for detecting rotational displacement information of a rotating object
US6356401B1 (en) * 1997-07-22 2002-03-12 Seagate Technology Llc Method and apparatus for forming accurate optical clock patterns
US6414807B2 (en) * 1997-07-22 2002-07-02 Seagate Technology Llc Method and apparatus for optically sensing accurate clock patterns
US6266298B1 (en) 1998-05-22 2001-07-24 Excel Precision Corporation Apparatus and method for inscribing, optically detecting, and using a clock pattern to write a servo pattern in an information storage unit
US6587293B1 (en) * 1999-05-07 2003-07-01 Seagate Technology Llc Method for servo writing servo pattern at a desired speed
US6751044B1 (en) * 1999-10-29 2004-06-15 Maxtor Corporation Method and apparatus for reading a clock track with a magneto-optical clock head using the transverse Kerr effect
JP2002208241A (ja) * 2000-12-28 2002-07-26 Fujitsu Ltd サーボトラックライタおよびクロック信号生成方法
US7839178B2 (en) * 2002-08-20 2010-11-23 Seagate Technology Llc High speed digital phase/frequency comparator for phase locked loops

Also Published As

Publication number Publication date
US7233453B2 (en) 2007-06-19
JP4170707B2 (ja) 2008-10-22
CN1487519A (zh) 2004-04-07
EP1394777B1 (de) 2009-07-29
US20040105184A1 (en) 2004-06-03
EP1394777A1 (de) 2004-03-03
JP2004095023A (ja) 2004-03-25
CN1292432C (zh) 2006-12-27

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee