SG54541A1 - Electronic magnetoresistive sensor biasing - Google Patents

Electronic magnetoresistive sensor biasing

Info

Publication number
SG54541A1
SG54541A1 SG1997002859A SG1997002859A SG54541A1 SG 54541 A1 SG54541 A1 SG 54541A1 SG 1997002859 A SG1997002859 A SG 1997002859A SG 1997002859 A SG1997002859 A SG 1997002859A SG 54541 A1 SG54541 A1 SG 54541A1
Authority
SG
Singapore
Prior art keywords
magnetoresistive sensor
sensor biasing
electronic
electronic magnetoresistive
biasing
Prior art date
Application number
SG1997002859A
Other languages
English (en)
Inventor
Klaas Berend Klaassen
Van Jacobus Peppen
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of SG54541A1 publication Critical patent/SG54541A1/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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/035—Measuring direction or magnitude of magnetic fields or magnetic flux using superconductive devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/096—Magnetoresistive devices anisotropic magnetoresistance sensors
    • 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
    • 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
    • G11B5/59683—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 for magnetoresistive 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • 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
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • G11B2005/0018—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers by current biasing control or regulation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
    • G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
    • G11B33/122—Arrangements for providing electrical connections, e.g. connectors, cables, switches
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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 
    • 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
    • G11B5/4806—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • G11B5/486—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives with provision for mounting or arranging electrical conducting means or circuits on or along the arm assembly

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
SG1997002859A 1996-09-17 1997-08-08 Electronic magnetoresistive sensor biasing SG54541A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/718,072 US5986839A (en) 1996-09-17 1996-09-17 Electronic magnetoresistive sensor biasing using a transducer equivalent circuit and current sources

Publications (1)

Publication Number Publication Date
SG54541A1 true SG54541A1 (en) 1998-11-16

Family

ID=24884715

Family Applications (2)

Application Number Title Priority Date Filing Date
SG1997002859A SG54541A1 (en) 1996-09-17 1997-08-08 Electronic magnetoresistive sensor biasing
SG9901620A SG83120A1 (en) 1996-09-17 1997-08-08 Electronic magnetoresistive sensor biasing

Family Applications After (1)

Application Number Title Priority Date Filing Date
SG9901620A SG83120A1 (en) 1996-09-17 1997-08-08 Electronic magnetoresistive sensor biasing

Country Status (8)

Country Link
US (2) US5986839A (de)
EP (3) EP1477821B1 (de)
JP (1) JP3349409B2 (de)
KR (1) KR100259425B1 (de)
CN (2) CN1310035C (de)
DE (3) DE69735147T2 (de)
MY (1) MY123086A (de)
SG (2) SG54541A1 (de)

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US6331921B1 (en) * 1998-07-06 2001-12-18 Agilent Technologies, Inc Magneto-resistive head read amplifier
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US6271977B1 (en) * 1999-02-16 2001-08-07 International Business Machines Corporation Multi-state preamplifier for disk drives
JP3382181B2 (ja) * 1999-07-12 2003-03-04 ティーディーケイ株式会社 トンネル磁気抵抗効果素子の特性検査方法および特性検査装置、ならびにハードディスクドライブ装置
US6574061B1 (en) 1999-08-27 2003-06-03 Seagate Technology Llc Method and apparatus for run-time temperature compensation of giant magnetoresistive head bias current
US6512647B1 (en) 1999-08-27 2003-01-28 Seagate Technology Llc Method and apparatus for adaptive tuning bias current for magnetoresistive head
US6744586B2 (en) 2000-01-03 2004-06-01 Seagate Technology Llc Method and apparatus for monitoring temperature
US6847501B2 (en) * 2002-11-06 2005-01-25 International Business Machines Corporation Method and apparatus for providing matched differential MR biasing and pre-amplification
CN100368820C (zh) * 2004-11-10 2008-02-13 中国科学院物理研究所 自旋阀型数字式磁场传感器及其制作方法
CN100392421C (zh) * 2004-11-10 2008-06-04 中国科学院物理研究所 用于电流过载保护器的开关型磁场传感器
DE102005020870B4 (de) * 2005-02-10 2014-05-22 Continental Automotive Gmbh Sensorschaltung
US7130143B1 (en) * 2005-04-28 2006-10-31 International Business Machines Corporation Apparatus, system, and method for measuring magnetoresistive head resistance
US7630159B2 (en) * 2005-05-27 2009-12-08 Agere Systems Inc. Resistance mode comparator for determining head resistance
EP1985045A4 (de) * 2006-02-16 2014-01-22 Agere Systems Inc Systeme und verfahren zur verringerung der kreuzkopplung in dicht beieinanderliegenden signalleitungen
US7667914B2 (en) * 2006-04-17 2010-02-23 Hitachi Global Storage Technologies Netherlands B.V. Direct coupled wide-bandwidth front-end with smart bias control amplifier
US7804658B1 (en) * 2006-09-11 2010-09-28 Marvell International Ltd. Biasing RMR with constant power
US8107181B2 (en) * 2006-10-30 2012-01-31 International Business Machines Corporation Apparatus, system, and method for measuring magnetoresistive head resistance
US7656601B1 (en) * 2006-10-31 2010-02-02 Marvell International Ltd. Current biasing circuit to reduce MR common mode voltage jumping for MR resistance measurement
WO2009101548A1 (en) * 2008-02-12 2009-08-20 Nxp B.V. Signal conditioning circuit for magnetoresistive sensors
WO2011086409A2 (en) * 2010-01-15 2011-07-21 Arctic Silicon Devices As Calibration and compensation method and apparatus for resistive sensor measurement bridge
JP5807069B2 (ja) * 2010-11-17 2015-11-10 シーゲイト テクノロジー エルエルシー 抵抗センサの多段温度係数を使用した凹凸検知およびヘッドと媒体との接触検知
CN102043136B (zh) * 2010-12-08 2013-07-24 中国科学院宁波材料技术与工程研究所 一种磁传感器
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Also Published As

Publication number Publication date
JP3349409B2 (ja) 2002-11-25
KR19980024060A (ko) 1998-07-06
EP1469322A2 (de) 2004-10-20
DE69735070T2 (de) 2006-09-14
DE69735147T2 (de) 2006-10-26
DE69732750D1 (de) 2005-04-21
DE69732750T2 (de) 2006-04-06
KR100259425B1 (ko) 2000-06-15
JPH10124807A (ja) 1998-05-15
EP0829733A2 (de) 1998-03-18
US6101056A (en) 2000-08-08
CN1177794A (zh) 1998-04-01
DE69735147D1 (de) 2006-04-13
SG83120A1 (en) 2001-09-18
US5986839A (en) 1999-11-16
MY123086A (en) 2006-05-31
EP1469322A3 (de) 2004-11-17
EP0829733A3 (de) 2000-02-23
CN1160706C (zh) 2004-08-04
CN1548979A (zh) 2004-11-24
EP1477821B1 (de) 2006-01-25
EP1469322B1 (de) 2006-01-11
EP1477821A1 (de) 2004-11-17
EP0829733B1 (de) 2005-03-16
CN1310035C (zh) 2007-04-11
DE69735070D1 (de) 2006-04-06

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