SG124352A1 - Method apparatus and system for accessing discontinuous media tracks - Google Patents

Method apparatus and system for accessing discontinuous media tracks

Info

Publication number
SG124352A1
SG124352A1 SG200600132A SG200600132A SG124352A1 SG 124352 A1 SG124352 A1 SG 124352A1 SG 200600132 A SG200600132 A SG 200600132A SG 200600132 A SG200600132 A SG 200600132A SG 124352 A1 SG124352 A1 SG 124352A1
Authority
SG
Singapore
Prior art keywords
track
storage
media tracks
offset information
discontinuous media
Prior art date
Application number
SG200600132A
Other languages
English (en)
Inventor
Thomas Robert Albrecht
Henry Hung Yang
Original Assignee
Hitachi Global Storage Tech
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 Hitachi Global Storage Tech filed Critical Hitachi Global Storage Tech
Publication of SG124352A1 publication Critical patent/SG124352A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • 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)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
SG200600132A 2005-01-10 2006-01-09 Method apparatus and system for accessing discontinuous media tracks SG124352A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/032,355 US7046476B1 (en) 2005-01-10 2005-01-10 Method apparatus and system for accessing discontinuous media tracks

Publications (1)

Publication Number Publication Date
SG124352A1 true SG124352A1 (en) 2006-08-30

Family

ID=36177338

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200600132A SG124352A1 (en) 2005-01-10 2006-01-09 Method apparatus and system for accessing discontinuous media tracks

Country Status (6)

Country Link
US (1) US7046476B1 (ja)
EP (1) EP1686569A3 (ja)
JP (1) JP2006196154A (ja)
KR (1) KR20060081661A (ja)
CN (1) CN100461263C (ja)
SG (1) SG124352A1 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7613088B2 (en) * 2004-01-28 2009-11-03 Seagate Technology Llc Method and system for time based file storage
US7417813B2 (en) * 2004-05-26 2008-08-26 Seagate Technology Llc Overlapping data track access
US7998651B2 (en) * 2006-05-15 2011-08-16 Asml Netherlands B.V. Imprint lithography
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
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
US7688535B2 (en) * 2007-09-05 2010-03-30 Seagate Technology Llc Extracting position information using user data
US9047921B2 (en) * 2009-11-19 2015-06-02 HGST Netherlands B.V. Adjusting recording density in a circumferential direction
US8475670B2 (en) 2011-07-11 2013-07-02 HGST Netherlands B.V. Method for manufacturing a patterned magnetic media with offset data and servo regions
US9099133B1 (en) 2013-01-29 2015-08-04 Western Digital Technologies, Inc. Disk drive servo control using hybrid upsample filter

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US4737867A (en) * 1984-02-03 1988-04-12 Brother Kogyo Kabushiki Kaisha Power saving arrangement in information recording system
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
US5184257A (en) * 1985-12-16 1993-02-02 Seiko Epson Corporation Head positioning control for a spindle motor disk drive
JP2611849B2 (ja) * 1989-04-17 1997-05-21 三菱電機株式会社 光ディスク装置
US5477402A (en) 1992-05-08 1995-12-19 International Business Machines Corporation Disk file with multiplexed servo system
US5384671A (en) * 1993-12-23 1995-01-24 Quantum Corporation PRML sampled data channel synchronous servo detector
JPH0836833A (ja) * 1994-07-22 1996-02-06 Matsushita Electric Ind Co Ltd ディスクの情報読み出し制御装置および読み出し制御方法
US5793559A (en) 1996-02-27 1998-08-11 Quantum Corporation In drive correction of servo pattern errors
JPH1050013A (ja) * 1996-08-02 1998-02-20 Fujitsu Ltd ディスク装置のオフトラック補正方法
JP3797447B2 (ja) * 1997-04-08 2006-07-19 パイオニア株式会社 情報記録再生装置
JP3699802B2 (ja) * 1997-05-07 2005-09-28 株式会社東芝 磁気抵抗効果ヘッド
US6115203A (en) 1998-01-30 2000-09-05 Maxtor Corporation Efficient drive-level estimation of written-in servo position error
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
US6292320B1 (en) * 1998-03-23 2001-09-18 Western Digital Technologies, Inc. Disk drive with dual stage actuator radial offset calibration
JP3581799B2 (ja) 1999-05-28 2004-10-27 松下電器産業株式会社 マスター情報担体およびその製造方法
US6643082B1 (en) 1999-06-08 2003-11-04 Seagate Technology Llc Servo sector format for a patterned media
US6728899B1 (en) * 1999-06-30 2004-04-27 Seagate Technology Llc On the fly defect slipping
US6421195B1 (en) 1999-09-20 2002-07-16 International Business Machines Corporation Magnetic disk media with patterned sections
US6519107B1 (en) * 1999-09-24 2003-02-11 Maxtor Corporation Hard disk drive having self-written servo burst patterns
JP2001101767A (ja) * 1999-09-30 2001-04-13 Fujitsu Ltd 情報記録装置およびその制御方法
US6754032B1 (en) 1999-10-22 2004-06-22 Seagate Tech. Llc Method and system for radial and circumferential alignment of data tracks on patterned media
US6781785B2 (en) 1999-11-29 2004-08-24 Jpmorgan Chase Bank Method and system for utilizing circular marks in position error signal patterns
WO2001041132A2 (en) * 1999-12-02 2001-06-07 Seagate Technology Llc Fly height control over patterned media
WO2001052260A1 (en) * 2000-01-10 2001-07-19 Seagate Technology Llc Servo track writing using extended copying with head offset
JP2004507855A (ja) 2000-05-10 2004-03-11 シーゲイト　テクノロジー　エルエルシー 組込みサーボ・ディスク・ドライブにおける書込みエラー補償テーブルの圧縮および記憶
US6657810B1 (en) 2001-02-28 2003-12-02 Western Digital Technologies, Inc. Disk drive employing separate read and write repeatable runout estimated values for a head having a read element offset from a write element
US6754030B2 (en) * 2001-06-27 2004-06-22 Seagate Technology Llc Optimal reader-to-writer offset measurement of a head in a disc drive for reduced track misregistration
JP2004005874A (ja) 2001-08-07 2004-01-08 Mitsubishi Chemicals Corp 磁気記録媒体の磁化パターン形成方法及び製造方法、磁化パターン形成装置、磁気記録媒体、並びに磁気記録装置
US6697208B2 (en) 2001-08-22 2004-02-24 Iomega Corporation System and methods for using offset information on a data storage medium
SG122746A1 (en) 2001-10-01 2006-06-29 Inst Data Storage Method of magnetically patterning a thin film by mask-controlled local phase transition
US6765748B2 (en) 2001-12-13 2004-07-20 Samsung Electronics Co., Ltd. Method of interleaving servo information fields for track following and seeking and a recording medium including interleaved servo information fields
US6785078B2 (en) * 2002-01-04 2004-08-31 International Business Machines Corporation Concurrent read and write access to simulated sequential data of a removable random access data storage medium
US6795594B2 (en) * 2002-10-03 2004-09-21 Nortel Networks Limited Duobinary modulation scheme for a Mach-Zehnder optical modulator
US6873488B2 (en) * 2002-10-24 2005-03-29 Seagate Technology Llc Enhanced MR offset with dynamic tuning range

Also Published As

Publication number Publication date
JP2006196154A (ja) 2006-07-27
CN100461263C (zh) 2009-02-11
KR20060081661A (ko) 2006-07-13
EP1686569A3 (en) 2008-01-02
EP1686569A2 (en) 2006-08-02
US7046476B1 (en) 2006-05-16
CN1805012A (zh) 2006-07-19

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