JP5649806B2 - 書込み同期化修正のための時間シフト・ビット - Google Patents

書込み同期化修正のための時間シフト・ビット Download PDF

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Publication number
JP5649806B2
JP5649806B2 JP2009188211A JP2009188211A JP5649806B2 JP 5649806 B2 JP5649806 B2 JP 5649806B2 JP 2009188211 A JP2009188211 A JP 2009188211A JP 2009188211 A JP2009188211 A JP 2009188211A JP 5649806 B2 JP5649806 B2 JP 5649806B2
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Japan
Prior art keywords
data array
write
dots
magnetic storage
writing
Prior art date
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Expired - Fee Related
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JP2009188211A
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English (en)
Japanese (ja)
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JP2010049787A5 (enExample
JP2010049787A (ja
Inventor
− フ リー シフ
− フ リー シフ
ワイ．ドビン アレクサンダー
ワイ．ドビン アレクサンダー
エム．タン デイブ
エム．タン デイブ
エス．クオ デイビッド
エス．クオ デイビッド
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Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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 Seagate Technology LLC filed Critical Seagate Technology LLC
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Publication of JP2010049787A5 publication Critical patent/JP2010049787A5/ja
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    • 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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • 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
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • 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
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1879—Direct read-after-write methods
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • 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
    • 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
    • G11B5/746—Bit Patterned record carriers, wherein each magnetic isolated data island corresponds to a bit
    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/855—Coating only part of a support with a magnetic layer
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Digital Magnetic Recording (AREA)
  • Magnetic Record Carriers (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP2009188211A 2008-08-19 2009-08-17 書込み同期化修正のための時間シフト・ビット Expired - Fee Related JP5649806B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/194,264 2008-08-19
US12/194,264 US7974036B2 (en) 2008-08-19 2008-08-19 Time-shifted bits for write synchronization correction

Publications (3)

Publication Number Publication Date
JP2010049787A JP2010049787A (ja) 2010-03-04
JP2010049787A5 JP2010049787A5 (enExample) 2012-09-27
JP5649806B2 true JP5649806B2 (ja) 2015-01-07

Family

ID=41696154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009188211A Expired - Fee Related JP5649806B2 (ja) 2008-08-19 2009-08-17 書込み同期化修正のための時間シフト・ビット

Country Status (3)

Country Link
US (1) US7974036B2 (enExample)
JP (1) JP5649806B2 (enExample)
CN (1) CN101656080B (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4983268B2 (ja) * 2007-01-16 2012-07-25 Ｔｄｋ株式会社 磁気記録媒体、磁気記録再生装置及び磁気記録媒体の製造方法
JP2012009115A (ja) * 2010-06-28 2012-01-12 Sharp Corp 磁気記録再生装置及び磁気記録媒体
US8848314B2 (en) 2011-12-07 2014-09-30 HGST Netherlands B.V. Write head designed for adjusting relative write phase between subtracks of a patterned media hypertrack
US11119662B2 (en) 2018-06-29 2021-09-14 International Business Machines Corporation Determining when to perform a data integrity check of copies of a data set using a machine learning module
US11099743B2 (en) 2018-06-29 2021-08-24 International Business Machines Corporation Determining when to replace a storage device using a machine learning module
US11119850B2 (en) 2018-06-29 2021-09-14 International Business Machines Corporation Determining when to perform error checking of a storage unit by using a machine learning module

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5987610A (ja) 1982-11-10 1984-05-21 Fujitsu Ltd 書込デ−タのプリシフト回路
JPS61144781A (ja) 1984-12-18 1986-07-02 Toshiba Corp デイスク装置
US4669003A (en) 1986-05-02 1987-05-26 Hewlett-Packard Company Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive
US5258876A (en) 1991-09-16 1993-11-02 Seagate Technology, Inc. Zone bit recording with write compensation
JP3135447B2 (ja) 1994-01-27 2001-02-13 富士通株式会社 磁気ディスクドライブの制御方法及びその装置
JP3125699B2 (ja) 1996-12-25 2001-01-22 日本電気株式会社 データ同期回路
JP3189774B2 (ja) 1998-01-28 2001-07-16 日本電気株式会社 ビット同期回路
JP3986209B2 (ja) 1998-06-18 2007-10-03 三菱電機株式会社 ビットタイミング同期装置およびその方法
US6738207B1 (en) * 1999-08-18 2004-05-18 Seagate Technology Llc Method for synchronizing the write current for magnetic recording with the bit islands on discrete bit patterned media
JP3576056B2 (ja) * 1999-12-28 2004-10-13 株式会社東芝 記録媒体の製造方法および記録媒体
JP4185228B2 (ja) * 2000-01-21 2008-11-26 Ｔｄｋ株式会社 磁気記録媒体および磁気記録再生方法
JP2001243601A (ja) * 2000-02-29 2001-09-07 Tdk Corp 磁気記録方法
JP4348851B2 (ja) 2000-09-21 2009-10-21 ソニー株式会社 記録媒体、ディスク記録装置および方法、並びにディスク再生装置及び方法
US7153597B2 (en) * 2001-03-15 2006-12-26 Seagate Technology Llc Magnetic recording media having chemically modified patterned substrate to assemble self organized magnetic arrays
JP3749856B2 (ja) * 2001-11-14 2006-03-01 株式会社東芝 記録装置
JP2003157507A (ja) * 2001-11-16 2003-05-30 Fuji Electric Co Ltd 磁気記録媒体、ディスク状磁気記録媒体の記録再生方法、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
JP4912584B2 (ja) * 2004-12-03 2012-04-11 ヒタチグローバルストレージテクノロジーズネザーランドビーブイ 情報記録装置及び情報記録装置の制御方法
JP2007164890A (ja) 2005-12-13 2007-06-28 Fujitsu Ltd 磁気記憶装置及び磁気ヘッド位置補正方法

Also Published As

Publication number Publication date
US20100046118A1 (en) 2010-02-25
CN101656080A (zh) 2010-02-24
CN101656080B (zh) 2013-11-06
JP2010049787A (ja) 2010-03-04
US7974036B2 (en) 2011-07-05

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