DE68921236T2 - Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information. - Google Patents

Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information.

Info

Publication number
DE68921236T2
DE68921236T2 DE68921236T DE68921236T DE68921236T2 DE 68921236 T2 DE68921236 T2 DE 68921236T2 DE 68921236 T DE68921236 T DE 68921236T DE 68921236 T DE68921236 T DE 68921236T DE 68921236 T2 DE68921236 T2 DE 68921236T2
Authority
DE
Germany
Prior art keywords
magnetic recording
servo information
recording disc
embedded servo
embedded
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
DE68921236T
Other languages
English (en)
Other versions
DE68921236D1 (de
Inventor
Karl Arnold Belser
Tarek Makansi
Ian Lewis Sanders
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE68921236D1 publication Critical patent/DE68921236D1/de
Application granted granted Critical
Publication of DE68921236T2 publication Critical patent/DE68921236T2/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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • 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
    • G11B5/5965—Embedded servo format
    • 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
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/743—Patterned record carriers, wherein the magnetic recording layer is patterned into magnetic isolated data islands, e.g. discrete tracks
DE68921236T 1988-04-28 1989-04-18 Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information. Expired - Fee Related DE68921236T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/187,157 US4912585A (en) 1988-04-28 1988-04-28 Discrete track thin film magnetic recording disk with embedded servo information

Publications (2)

Publication Number Publication Date
DE68921236D1 DE68921236D1 (de) 1995-03-30
DE68921236T2 true DE68921236T2 (de) 1995-08-10

Family

ID=22687822

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68921236T Expired - Fee Related DE68921236T2 (de) 1988-04-28 1989-04-18 Magnetische Aufzeichnungsplatte mit eingebetteter Servo-Information.

Country Status (4)

Country Link
US (1) US4912585A (de)
EP (1) EP0339851B1 (de)
JP (1) JPH0646486B2 (de)
DE (1) DE68921236T2 (de)

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JP2863190B2 (ja) * 1989-03-24 1999-03-03 ソニー株式会社 磁気ディスクの作製方法
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JP3237141B2 (ja) * 1991-09-20 2001-12-10 ソニー株式会社 ハードディスクドライブ装置
JP3344495B2 (ja) * 1993-03-04 2002-11-11 ソニー株式会社 磁気ディスク装置
US5774297A (en) * 1996-03-26 1998-06-30 Seagate Technology, Inc. Dynamic compensation of servo burst measurement offsets in a disc drive
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US5870243A (en) * 1996-08-28 1999-02-09 Seagate Technology, Inc. Servo frame defect mapping in a hard disc drive
US6456449B1 (en) 1997-08-07 2002-09-24 International Business Machines Corporation Disk drive with wide servo burst pattern and wide servo sensing element
JP3329259B2 (ja) 1998-03-20 2002-09-30 松下電器産業株式会社 マスター情報担体、および、磁気記録媒体の製造方法
JP3361740B2 (ja) 1998-03-23 2003-01-07 松下電器産業株式会社 マスター情報磁気記録装置及び磁気記録媒体の製造方法
CN1149542C (zh) 1998-10-29 2004-05-12 松下电器产业株式会社 主信息载体和使用了主信息载体的磁记录媒体的制造方法
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US6754017B2 (en) 2001-10-26 2004-06-22 Hitachi Global Storage Technologies, Netherlands B.V. Patterned media magnetic recording disk drive with timing of write pulses by sensing the patterned media
JP2005004917A (ja) * 2003-06-13 2005-01-06 Hitachi Ltd 垂直磁気記録媒体及び磁気ディスク装置
US7102839B2 (en) * 2003-10-31 2006-09-05 International Business Machines Corporation Magnetic recording channel utilizing control fields for timing recovery, equalization, amplitude and amplitude asymmetry
US7378028B2 (en) * 2004-06-03 2008-05-27 Seagate Technology Llc Method for fabricating patterned magnetic recording media
JP2006031856A (ja) * 2004-07-16 2006-02-02 Toshiba Corp 垂直磁気記録用のパターンドディスク媒体及び同媒体を搭載した磁気ディスクドライブ
JP2006031847A (ja) * 2004-07-16 2006-02-02 Toshiba Corp 磁気ディスク媒体及び磁気ディスク装置
JP4358067B2 (ja) 2004-08-06 2009-11-04 株式会社東芝 磁気記録媒体および磁気記録装置
JP2006099932A (ja) * 2004-09-03 2006-04-13 Tdk Corp 磁気記録媒体、磁気記録再生装置及び磁気記録媒体製造用スタンパ
US7161753B2 (en) * 2005-01-28 2007-01-09 Komag, Inc. Modulation of sidewalls of servo sectors of a magnetic disk and the resultant disk
JP4134066B2 (ja) 2005-02-24 2008-08-13 富士通株式会社 ヘッド位置検出方法および記録媒体駆動装置
JP4649262B2 (ja) 2005-04-19 2011-03-09 株式会社東芝 磁気記録媒体の製造方法
US7771852B2 (en) * 2005-06-09 2010-08-10 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk with patterned nondata islands of alternating polarity
US7236325B2 (en) * 2005-06-09 2007-06-26 Hitachi Global Storage Technologies Netherlands B.V. Method for formatting a magnetic recording disk with patterned nondata islands of alternating polarity
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
JP4585476B2 (ja) 2006-03-16 2010-11-24 株式会社東芝 パターンド媒体および磁気記録装置
JP4675812B2 (ja) 2006-03-30 2011-04-27 株式会社東芝 磁気記録媒体、磁気記録装置および磁気記録媒体の製造方法
US7950587B2 (en) * 2006-09-22 2011-05-31 The Board of Regents of the Nevada System of Higher Education on behalf of the University of Reno, Nevada Devices and methods for storing data
US20080084634A1 (en) * 2006-09-22 2008-04-10 Board Of Regents Of The Nevada System Of Higher Education On Behalf Of The University Nevada Devices and methods for storing data
US7652839B2 (en) * 2007-04-26 2010-01-26 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk with identical servo patterns formed on each disk surface by single master template and disk drive using the disk
JP2008282512A (ja) 2007-05-14 2008-11-20 Toshiba Corp 磁気記録媒体及び磁気記録再生装置
US7466506B1 (en) 2007-06-19 2008-12-16 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk drive with head positioning servo control system for disk surfaces with identical servo patterns
KR100900201B1 (ko) * 2007-07-04 2009-06-02 삼성전자주식회사 자기기록매체, 이를 채용하는 하드디스크 드라이브 및하드디스크 드라이브의 ｗｒ 오프셋 측정방법
KR100924698B1 (ko) * 2007-07-24 2009-11-03 삼성전자주식회사 자기기록장치
US7848039B2 (en) * 2007-08-11 2010-12-07 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write head positioning
US7848040B2 (en) * 2007-08-17 2010-12-07 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk and disk drive with amplitude-type servo fields having patterned alternating-polarity servo islands for read/write head positioning
JP4382843B2 (ja) 2007-09-26 2009-12-16 株式会社東芝 磁気記録媒体およびその製造方法
US7729073B2 (en) * 2007-10-12 2010-06-01 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk and disk drive with amplitude-type servo fields having patterned servo islands for read/write head positioning
US7612961B2 (en) * 2007-10-12 2009-11-03 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write head positioning
US7944643B1 (en) 2007-12-05 2011-05-17 Wd Media, Inc. Patterns for pre-formatted information on magnetic hard disk media
KR20090059848A (ko) * 2007-12-07 2009-06-11 삼성전자주식회사 패턴 자기기록매체 및 패턴 자기기록매체에 트랙 정보를기록하는 방법
US8338006B2 (en) * 2008-06-10 2012-12-25 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk having pre-patterned surface features and planarized surface
US20100073808A1 (en) * 2008-09-23 2010-03-25 Seagate Technology Llc Position sensing in discrete track recording
US7986488B2 (en) * 2008-12-04 2011-07-26 Hitachi Global Storage Technologies Netherlands B.V. Magnetic recording disk and disk drive with alternating single-polarity position error signal (PES) blocks for read/write head positioning
US8077424B2 (en) * 2009-05-28 2011-12-13 Seagate Technology, Llc Transducer design with a sensor close to write pole
US20110051286A1 (en) * 2009-09-01 2011-03-03 Seagate Technology Llc Writing data on alternating magnetic and nonmagnetic stripes of a servo pattern
US8345368B2 (en) 2010-12-15 2013-01-01 Seagate Technology Llc Bipolar position error bursts with unipolar servo fields
CN102855886B (zh) * 2011-06-30 2015-07-08 大银微系统股份有限公司 在磁带上形成位置参考讯号磁区的加工方法
US9418684B2 (en) * 2013-10-04 2016-08-16 Seagate Technology Llc Magnetic read head with separately addressable read transducers

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Also Published As

Publication number Publication date
JPH0646486B2 (ja) 1994-06-15
DE68921236D1 (de) 1995-03-30
EP0339851A3 (en) 1989-12-20
US4912585A (en) 1990-03-27
EP0339851B1 (de) 1995-02-22
EP0339851A2 (de) 1989-11-02
JPH02146153A (ja) 1990-06-05

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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