WO2008149411A1 - 記憶装置、記憶装置のプロセッサ及びプログラム - Google Patents

記憶装置、記憶装置のプロセッサ及びプログラム Download PDF

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Publication number
WO2008149411A1
WO2008149411A1 PCT/JP2007/061262 JP2007061262W WO2008149411A1 WO 2008149411 A1 WO2008149411 A1 WO 2008149411A1 JP 2007061262 W JP2007061262 W JP 2007061262W WO 2008149411 A1 WO2008149411 A1 WO 2008149411A1
Authority
WO
WIPO (PCT)
Prior art keywords
disk medium
region
writing
reading
signal quality
Prior art date
Application number
PCT/JP2007/061262
Other languages
English (en)
French (fr)
Inventor
Yuichiro Yamazaki
Original Assignee
Fujitsu Limited
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 Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/061262 priority Critical patent/WO2008149411A1/ja
Priority to JP2009517630A priority patent/JP4656594B2/ja
Publication of WO2008149411A1 publication Critical patent/WO2008149411A1/ja
Priority to US12/631,697 priority patent/US8000046B2/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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • 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
    • G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
    • 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
    • G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
    • G11B20/10287—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors
    • G11B20/10296—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors using the Viterbi algorithm
    • 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
    • G11B20/10481—Improvement or modification of read or write signals optimisation methods
    • 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
    • G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV 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
    • 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

Abstract

　ライトリード部は、アクチュエータによりヘッドをディスク媒体の任意の位置に移動しヘッドによりディスク媒体に対しデータをライト又はリードする。調整領域選択部は、ディスク媒体を円周方向の複数領域に分割して各領域毎にデータをライトした後にリードしてディスク媒体の面内保磁力の分布に対応した信号品質を測定し、各領域の信号品質を比較して例えば最も信号品質の低い領域をパラメータ調整領域として選択する。パラメータ調整部は面内保磁力を考慮して選択したパラメータ調整領域を使用してライトリード部によるディスク媒体のライト及びリードに使用するパラメータを最適値に調整する。
PCT/JP2007/061262 2007-06-04 2007-06-04 記憶装置、記憶装置のプロセッサ及びプログラム WO2008149411A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2007/061262 WO2008149411A1 (ja) 2007-06-04 2007-06-04 記憶装置、記憶装置のプロセッサ及びプログラム
JP2009517630A JP4656594B2 (ja) 2007-06-04 2007-06-04 記憶装置、記憶装置のプロセッサ及びプログラム
US12/631,697 US8000046B2 (en) 2007-06-04 2009-12-04 Storage device, processor or storage device, and computer program product for providing parameter adjustment during read/write operations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/061262 WO2008149411A1 (ja) 2007-06-04 2007-06-04 記憶装置、記憶装置のプロセッサ及びプログラム

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/631,697 Continuation US8000046B2 (en) 2007-06-04 2009-12-04 Storage device, processor or storage device, and computer program product for providing parameter adjustment during read/write operations

Publications (1)

Publication Number Publication Date
WO2008149411A1 true WO2008149411A1 (ja) 2008-12-11

Family

ID=40093248

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/061262 WO2008149411A1 (ja) 2007-06-04 2007-06-04 記憶装置、記憶装置のプロセッサ及びプログラム

Country Status (3)

Country Link
US (1) US8000046B2 (ja)
JP (1) JP4656594B2 (ja)
WO (1) WO2008149411A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014002812A (ja) * 2012-06-18 2014-01-09 Hitachi Ltd マイクロ波アシスト磁気記録方式及び磁気記憶装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015011747A (ja) 2013-06-28 2015-01-19 株式会社東芝 ディスク記憶装置及び記憶領域の管理方法
US10262751B2 (en) * 2016-09-29 2019-04-16 Intel Corporation Multi-dimensional optimization of electrical parameters for memory training
JP2019160381A (ja) * 2018-03-16 2019-09-19 株式会社東芝 ディスク装置、プリアンプ、及び制御方法
JP2020113354A (ja) 2019-01-15 2020-07-27 株式会社東芝 磁気ディスク装置及び磁気ディスク装置の記録方法
JP2020135909A (ja) 2019-02-20 2020-08-31 株式会社東芝 磁気ディスク装置及び磁気ディスク装置の記録方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09180373A (ja) * 1995-12-26 1997-07-11 Nec Corp 磁気ディスク装置のｒ／ｗチャネル・パラメータの設定方法
JP2000235703A (ja) * 1999-02-12 2000-08-29 Matsushita Electric Ind Co Ltd ディスク装置およびそのチャンネルパラメータ設定方法
JP2003223701A (ja) * 2002-01-29 2003-08-08 Hitachi Ltd 目標応答波形を磁気ヘッド／ゾーン毎に設定した磁気ディスク装置
JP2006309810A (ja) * 2005-04-26 2006-11-09 Hitachi Global Storage Technologies Netherlands Bv 磁気ディスク装置の製造方法及び磁気ディスク装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05142317A (ja) 1991-11-22 1993-06-08 Sumitomo Metal Mining Co Ltd 磁気記録媒体の磁化曲線測定装置及び磁気記録媒体の評価方法
JPH08124152A (ja) * 1994-10-26 1996-05-17 Hoya Corp 磁気記録媒体、磁気記録媒体の製造方法、磁気記録再生方法及び磁気ディスク装置
JPH08129753A (ja) * 1994-10-31 1996-05-21 Nec Corp 光記録再生装置
JP3199996B2 (ja) * 1995-11-15 2001-08-20 株式会社東芝 ディスク記録再生システム及びそのヘッド浮上変動検出方法
JPH1091908A (ja) 1996-09-17 1998-04-10 Toshiba Corp データ記録補償機能を備えた磁気ディスク装置
JP2006172590A (ja) * 2004-12-15 2006-06-29 Hitachi Global Storage Technologies Netherlands Bv 磁気ディスク装置の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09180373A (ja) * 1995-12-26 1997-07-11 Nec Corp 磁気ディスク装置のｒ／ｗチャネル・パラメータの設定方法
JP2000235703A (ja) * 1999-02-12 2000-08-29 Matsushita Electric Ind Co Ltd ディスク装置およびそのチャンネルパラメータ設定方法
JP2003223701A (ja) * 2002-01-29 2003-08-08 Hitachi Ltd 目標応答波形を磁気ヘッド／ゾーン毎に設定した磁気ディスク装置
JP2006309810A (ja) * 2005-04-26 2006-11-09 Hitachi Global Storage Technologies Netherlands Bv 磁気ディスク装置の製造方法及び磁気ディスク装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014002812A (ja) * 2012-06-18 2014-01-09 Hitachi Ltd マイクロ波アシスト磁気記録方式及び磁気記憶装置

Also Published As

Publication number Publication date
JPWO2008149411A1 (ja) 2010-08-19
US20100103561A1 (en) 2010-04-29
US8000046B2 (en) 2011-08-16
JP4656594B2 (ja) 2011-03-23

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