ATE244439T1 - System zum lesen von magnetischen informationen mit detektor für thermische unebenheiten - Google Patents

System zum lesen von magnetischen informationen mit detektor für thermische unebenheiten

Info

Publication number
ATE244439T1
ATE244439T1 AT97201014T AT97201014T ATE244439T1 AT E244439 T1 ATE244439 T1 AT E244439T1 AT 97201014 T AT97201014 T AT 97201014T AT 97201014 T AT97201014 T AT 97201014T AT E244439 T1 ATE244439 T1 AT E244439T1
Authority
AT
Austria
Prior art keywords
detector
thermal disturbance
information reading
reading system
magnetic information
Prior art date
Application number
AT97201014T
Other languages
English (en)
Inventor
Luan Le
Eric Desbonnets
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE244439T1 publication Critical patent/ATE244439T1/de

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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3945—Heads comprising more than one sensitive element
    • 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
    • G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
    • G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
    • 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
    • G11B5/40—Protective measures on heads, e.g. against excessive temperature 

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Signal Processing (AREA)
  • Magnetic Heads (AREA)
  • Digital Magnetic Recording (AREA)
  • Measuring Magnetic Variables (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
AT97201014T 1996-04-17 1997-04-07 System zum lesen von magnetischen informationen mit detektor für thermische unebenheiten ATE244439T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9604801A FR2747822A1 (fr) 1996-04-17 1996-04-17 Systeme de lecture d'informations magnetiques muni d'un detecteur d'asperites thermiques

Publications (1)

Publication Number Publication Date
ATE244439T1 true ATE244439T1 (de) 2003-07-15

Family

ID=9491291

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97201014T ATE244439T1 (de) 1996-04-17 1997-04-07 System zum lesen von magnetischen informationen mit detektor für thermische unebenheiten

Country Status (9)

Country Link
US (1) US5956197A (de)
EP (1) EP0802525B1 (de)
JP (1) JP3866364B2 (de)
KR (1) KR100560317B1 (de)
CN (1) CN1100321C (de)
AT (1) ATE244439T1 (de)
DE (1) DE69723146T2 (de)
FR (1) FR2747822A1 (de)
MY (1) MY119322A (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG55343A1 (en) * 1996-07-11 1998-12-21 Texas Instruments Inc Offet free thermal asperity t/a detector
US6122131A (en) * 1997-09-12 2000-09-19 Quantum Corporation Adaptively-controlled disk drive assembly
US6069761A (en) * 1998-03-30 2000-05-30 Quantum Corporation Apparatus, and associated method, for protecting a magnetoresistive sensor from damage during a thermal asperity event
US6494085B2 (en) * 1998-09-14 2002-12-17 Seagate Technology Llc Method and system for detecting thermal asperity on discs used in a disc drive
US6754015B2 (en) 2002-03-29 2004-06-22 Seagate Technology Llc MR heads thermal asperity cancellation
US7569170B2 (en) 2005-03-04 2009-08-04 E.I. Du Pont De Nemours And Company Compositions comprising a fluoroolefin
JP5514314B2 (ja) * 2010-07-30 2014-06-04 パナソニック株式会社 磁界検知マイコンおよび磁界検知方法
FR2974418B1 (fr) * 2011-04-20 2013-05-31 Commissariat Energie Atomique Detecteur d'oscillations
CN114184856A (zh) * 2021-12-06 2022-03-15 中国计量科学研究院 一种基于全差分结构的热噪声检测装置及噪声温度计

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61284819A (ja) * 1985-06-12 1986-12-15 Hitachi Ltd 磁気抵抗効果型再生ヘツド
CN1015030B (zh) * 1988-08-01 1991-12-04 国际商业机器公司 抑制数据通道加性干扰的方法和电路
US4914398A (en) * 1988-08-01 1990-04-03 International Business Machines Corporation Method and circuitry to suppress additive disturbances in data channels containing MR sensors
US5057785A (en) * 1990-01-23 1991-10-15 International Business Machines Corporation Method and circuitry to suppress additive disturbances in data channels
US5216561A (en) * 1991-08-29 1993-06-01 Eastman Kodak Company Apparatus and method of manipulating sum, absolute difference and difference signals for suppressing medium-induced playback error in a magnetoresistive head assembly
JP3147508B2 (ja) * 1992-07-17 2001-03-19 松下電器産業株式会社 速度検出装置
US5351003A (en) * 1993-04-02 1994-09-27 General Motors Corporation Temperature compensated magnetoresistive position sensor
JP3175415B2 (ja) * 1993-08-09 2001-06-11 株式会社日立製作所 磁気記録再生装置
JPH0773417A (ja) * 1993-09-01 1995-03-17 Hitachi Ltd 磁気抵抗効果型磁気ヘッド及び磁気ディスク装置
US5420736A (en) * 1994-04-15 1995-05-30 International Business Machines Corporation MR read transducer with thermal noise cancellation
US5751510A (en) * 1996-01-02 1998-05-12 International Business Machines Corporation Method and apparatus for restoring a thermal response signal of a magnetoresistive head

Also Published As

Publication number Publication date
EP0802525B1 (de) 2003-07-02
JP3866364B2 (ja) 2007-01-10
MY119322A (en) 2005-05-31
FR2747822A1 (fr) 1997-10-24
CN1100321C (zh) 2003-01-29
KR100560317B1 (ko) 2006-06-15
EP0802525A1 (de) 1997-10-22
CN1166031A (zh) 1997-11-26
DE69723146T2 (de) 2004-05-27
DE69723146D1 (de) 2003-08-07
KR970071722A (ko) 1997-11-07
US5956197A (en) 1999-09-21
JPH1064003A (ja) 1998-03-06

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Legal Events

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