JPS5065211A - - Google Patents

Info

Publication number
JPS5065211A
JPS5065211A JP49113979A JP11397974A JPS5065211A JP S5065211 A JPS5065211 A JP S5065211A JP 49113979 A JP49113979 A JP 49113979A JP 11397974 A JP11397974 A JP 11397974A JP S5065211 A JPS5065211 A JP S5065211A
Authority
JP
Japan
Legal status (The legal status 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 status listed.)
Granted
Application number
JP49113979A
Other languages
Japanese (ja)
Other versions
JPS5337204B2 (
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 filed Critical
Publication of JPS5065211A publication Critical patent/JPS5065211A/ja
Publication of JPS5337204B2 publication Critical patent/JPS5337204B2/ja
Expired legal-status Critical Current

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
    • G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
    • G11B5/3951—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes
    • G11B5/3954—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes the active elements transducing on a single track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
    • 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
    • G11B5/399—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 with intrinsic biasing, e.g. provided by equipotential strips

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Magnetic Variables (AREA)
  • Hall/Mr Elements (AREA)
JP11397974A 1973-10-04 1974-10-04 Expired JPS5337204B2 ( )

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US403704A US3860965A (en) 1973-10-04 1973-10-04 Magnetoresistive read head assembly having matched elements for common mode rejection

Publications (2)

Publication Number Publication Date
JPS5065211A true JPS5065211A ( ) 1975-06-02
JPS5337204B2 JPS5337204B2 ( ) 1978-10-07

Family

ID=23596709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11397974A Expired JPS5337204B2 ( ) 1973-10-04 1974-10-04

Country Status (13)

Country Link
US (1) US3860965A ( )
JP (1) JPS5337204B2 ( )
BE (1) BE820322A ( )
BR (1) BR7408252D0 ( )
CA (1) CA1030654A ( )
CH (1) CH575696A5 ( )
DE (1) DE2442565C2 ( )
ES (1) ES430225A1 ( )
FR (1) FR2246923B1 ( )
GB (1) GB1447449A ( )
IT (1) IT1020145B ( )
NL (1) NL179007C ( )
SE (1) SE401284B ( )

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114913A (en) * 1975-04-01 1976-10-09 Matsushita Electric Ind Co Ltd Magnetic head
JPS52117609A (en) * 1976-03-29 1977-10-03 Fujitsu Ltd Magnetic head
JPS5333420U ( ) * 1976-08-30 1978-03-23
JPS5862818A (ja) * 1981-10-08 1983-04-14 Victor Co Of Japan Ltd 磁気シ−ルド型磁気抵抗効果ヘツド
JPS60182509A (ja) * 1984-02-28 1985-09-18 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン 磁気ヘッド
US5218497A (en) * 1988-12-02 1993-06-08 Hitachi, Ltd. Magnetic recording-reproducing apparatus and magnetoresistive head having two or more magnetoresistive films for use therewith

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2248566B1 ( ) * 1973-10-23 1976-11-19 Cii
US4052748A (en) * 1974-04-01 1977-10-04 U.S. Philips Corporation Magnetoresistive magnetic head
NL7405727A (nl) * 1974-04-29 1975-10-31 Philips Nv Magnetoweerstandkop.
NL7508533A (nl) * 1975-07-17 1977-01-19 Philips Nv Dunne film magneetkop voor het lezen en schrijven van informatie.
US4012781A (en) * 1975-08-14 1977-03-15 International Business Machines Corporation Magnetoresistive read head assembly for servo operation
US4036723A (en) * 1975-08-21 1977-07-19 International Business Machines Corporation RF bias sputtering method for producing insulating films free of surface irregularities
US3979775A (en) * 1975-09-08 1976-09-07 International Business Machines Corporation Magnetoresistive multitransducer assembly with compensation elements for thermal drift and bias balancing
JPS54157610A (en) * 1978-05-26 1979-12-12 Sony Corp Magnetic head
US4191977A (en) * 1978-09-29 1980-03-04 International Business Machines Corporation Biasing of magnetoresistive read head using gyrators
GB2037474B (en) * 1978-12-11 1983-08-24 Racal Recorders Ltd Magneting recording and reproduction
JPS5613513A (en) * 1979-07-11 1981-02-09 Matsushita Electric Ind Co Ltd Magnetic head and its manufacture
JPH0132183Y2 ( ) * 1979-07-19 1989-10-03
US4280194A (en) * 1979-11-26 1981-07-21 International Business Machines Corporation Parametric bubble detector
US4356523A (en) * 1980-06-09 1982-10-26 Ampex Corporation Narrow track magnetoresistive transducer assembly
US4447839A (en) * 1980-10-28 1984-05-08 Compagnie Internationale Pour L'informatique Cii-Honeywell Bull (Societe Anonyme) Magnetoresistant transducer
FR2494952B1 (fr) * 1980-11-27 1986-06-06 Bull Sa Transducteur magnetoresistant de lecture d'un support d'enregistrement a haute densite d'informations
NL8101962A (nl) * 1981-04-22 1982-11-16 Philips Nv Magnetische sensor.
JPS5832221A (ja) * 1981-08-17 1983-02-25 Sony Corp 磁気抵抗効果型磁気ヘツド
US4745509A (en) * 1981-08-21 1988-05-17 Matsushita Electric Industrial Company, Limited Magnetic head with improved supporter for perpendicular magnetization recording
US4616281A (en) * 1982-03-10 1986-10-07 Copal Company Limited Displacement detecting apparatus comprising magnetoresistive elements
US4589041A (en) * 1982-08-30 1986-05-13 International Business Machines Corporation Differential magnetoresistive sensor for vertical recording
JPS5999370A (ja) * 1982-11-30 1984-06-08 Copal Co Ltd 磁気抵抗素子を具える磁気検出器の製造方法
US4580175A (en) * 1983-01-14 1986-04-01 Magnetic Peripherals, Inc. Endless, folded magnetoresistive head
US4535375A (en) * 1983-01-14 1985-08-13 Magnetic Peripherals, Inc. Magnetoresistive head
US4599668A (en) * 1983-06-15 1986-07-08 Eastman Kodak Company Inductively-coupled, thin-film M-R head
EP0326192A3 (en) * 1984-02-28 1989-09-06 International Business Machines Corporation Magneto resistive coupled thin films for magnetic flux sensing
JPH07105006B2 (ja) * 1985-11-05 1995-11-13 ソニー株式会社 磁気抵抗効果型磁気ヘツド
JPS62184616A (ja) * 1986-02-10 1987-08-13 Hitachi Ltd 磁気抵抗効果型磁気ヘツド
DE3820475C1 ( ) * 1988-06-16 1989-12-21 Kernforschungsanlage Juelich Gmbh, 5170 Juelich, De
US4878140A (en) * 1988-06-21 1989-10-31 Hewlett-Packard Company Magneto-resistive sensor with opposing currents for reading perpendicularly recorded media
US5048175A (en) * 1989-03-03 1991-09-17 Seagate Technology, Inc. Method for grounding pole structures in thin film magnetic heads
US4972286A (en) * 1989-03-03 1990-11-20 Seagate Technology, Inc. Grounding pole structures in thin film mganetic heads
US5084794A (en) * 1990-03-29 1992-01-28 Eastman Kodak Company Shorted dual element magnetoresistive reproduce head exhibiting high density signal amplification
US5266786A (en) * 1991-10-01 1993-11-30 Ncr Corporation Magnetoresistive head for reading magnetic ink characters
US5296987A (en) * 1992-06-05 1994-03-22 Hewlett-Packard Company Tapered conductors for magnetoresistive transducers
US5270892A (en) * 1992-06-05 1993-12-14 Hewlett-Packard Company Conductor configuration for magnetoresistive transducers
US5302461A (en) * 1992-06-05 1994-04-12 Hewlett-Packard Company Dielectric films for use in magnetoresistive transducers
US5309304A (en) * 1992-06-05 1994-05-03 Hewlett-Packard Company Magnetoresistive transducer conductor configuration
US5323285A (en) * 1992-06-23 1994-06-21 Eastman Kodak Company Shielded dual element magnetoresistive reproduce head exhibiting high density signal amplification
EP0605336B1 (en) * 1992-12-29 2002-05-08 Eastman Kodak Company A magnetoresistive magnetic field sensor with a very long active region
US5508868A (en) * 1993-01-25 1996-04-16 Read-Rite Corporation Dual element magnetoresistive sensing head having in-gap flux guide and flux closure piece with particular connection of magnetoresistive sensing elements to differential amplifier
KR950008750B1 (ko) * 1993-02-05 1995-08-04 대우전자주식회사 준고정 헤드 영상 신호 기록 및 재생 장치
US5576915A (en) * 1993-03-15 1996-11-19 Kabushiki Kaisha Toshiba Magnetoresistive head with antiferromagnetic sublayers interposed between first and second spin-valve units to exchange bias inner magnetic films thereof
US5388014A (en) * 1993-09-10 1995-02-07 Hewlett-Packard Company Apparatus and method of sensing the position of a magnetic head
US5406433A (en) * 1993-12-01 1995-04-11 Eastman Kodak Company Dual magnetoresistive head for reproducing very narrow track width short wavelength data
US5828525A (en) 1994-03-15 1998-10-27 Kabushiki Kaisha Toshiba Differential detection magnetoresistance head
TW248602B (en) * 1994-05-31 1995-06-01 Ibm Magnetoresistive head with asymmetric leads
US6741494B2 (en) * 1995-04-21 2004-05-25 Mark B. Johnson Magnetoelectronic memory element with inductively coupled write wires
US6064083A (en) * 1995-04-21 2000-05-16 Johnson; Mark B. Hybrid hall effect memory device and method of operation
US5633486A (en) * 1995-05-19 1997-05-27 Eastman Kodak Company Apparatus for sensing magnetic fields from a wide range of magnetic media
WO1996042081A1 (en) * 1995-06-08 1996-12-27 International Business Machines Corporation Disk apparatus and servo-pattern write system
DE69616676T2 (de) * 1995-07-18 2002-05-16 Hewlett-Packard Co.(A Delaware Corporation), Palo Alto Magnetoresistiver Aufnahmekopf
EP0777213A1 (en) 1995-11-29 1997-06-04 Eastman Kodak Company Flux-guided paired magnetoresistive head
FR2743930B1 (fr) * 1996-01-19 2000-04-07 Fujitsu Ltd Capteur magnetique pour lecture de supports d'enregistrement
US6367146B1 (en) 1996-04-17 2002-04-09 Headway Technologies, Inc. Photoresist frame plating method for forming planarized magnetic pole layer
US5953173A (en) * 1996-09-17 1999-09-14 International Business Machines Corporation High CMRR and sensor-disk short-circuit protection device for dual element magnetoresistive heads
US5930062A (en) * 1996-10-03 1999-07-27 Hewlett-Packard Company Actively stabilized magnetoresistive head
US5783460A (en) * 1996-10-25 1998-07-21 Headway Technologies, Inc. Method of making self-aligned dual stripe magnetoresistive (DRMR) head for high density recording
US5706151A (en) * 1996-12-12 1998-01-06 Eastman Kodak Company Low bias current paired magnetoresistive head with misaligned anisotropy axes
US6266205B1 (en) 1998-03-10 2001-07-24 Maxtor Corporation Parallel servo with ultra high bandwidth off-track detection
US6157510A (en) * 1998-03-10 2000-12-05 Maxtor Corporation Magnetic storage device with multiple read elements which are offset laterally and longitudinally
WO1999059145A1 (en) * 1998-05-13 1999-11-18 Storage Technology Corporation Method for reading both high and low density signals with an mr head
US6278594B1 (en) 1998-10-13 2001-08-21 Storage Technology Corporation Dual element magnetoresistive read head with integral element stabilization
US6606216B1 (en) 1999-05-05 2003-08-12 Maxtor Corporation Transducer head with separate data and servo read elements
US6191925B1 (en) 1999-06-18 2001-02-20 Storage Technology Corporation Dual element read with shaped elements
US7227726B1 (en) * 2002-11-12 2007-06-05 Storage Technology Corporation Method and system for providing a dual-stripe magnetoresistive element having periodic structure stabilization
US7777607B2 (en) * 2004-10-12 2010-08-17 Allegro Microsystems, Inc. Resistor having a predetermined temperature coefficient
US7795862B2 (en) 2007-10-22 2010-09-14 Allegro Microsystems, Inc. Matching of GMR sensors in a bridge
US9230578B2 (en) * 2013-12-23 2016-01-05 HGST Netherlands B.V. Multiple readers for high resolution and SNR for high areal density application
US10056098B1 (en) 2017-11-29 2018-08-21 Western Digital Technologies, Inc. Data storage device employing multi-mode sensing circuitry for multiple head sensor elements
US11187764B2 (en) 2020-03-20 2021-11-30 Allegro Microsystems, Llc Layout of magnetoresistance element

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1272044A (en) * 1971-02-22 1972-04-26 Mullard Ltd Improvements in or relating to magnetoresistive readout transducers
FR2165206A5 ( ) * 1971-12-22 1973-08-03 Cii
US3814863A (en) * 1972-10-11 1974-06-04 Ibm Internally biased magnetoresistive magnetic transducer
US3813692A (en) * 1972-10-11 1974-05-28 Ibm Internally biased magnetoresistive magnetic transducer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114913A (en) * 1975-04-01 1976-10-09 Matsushita Electric Ind Co Ltd Magnetic head
JPS5612931B2 ( ) * 1975-04-01 1981-03-25
JPS52117609A (en) * 1976-03-29 1977-10-03 Fujitsu Ltd Magnetic head
JPS5333420U ( ) * 1976-08-30 1978-03-23
JPS6134577Y2 ( ) * 1976-08-30 1986-10-08
JPS5862818A (ja) * 1981-10-08 1983-04-14 Victor Co Of Japan Ltd 磁気シ−ルド型磁気抵抗効果ヘツド
JPS6326452B2 ( ) * 1981-10-08 1988-05-30 Victor Company Of Japan
JPS60182509A (ja) * 1984-02-28 1985-09-18 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン 磁気ヘッド
JPH0259522B2 ( ) * 1984-02-28 1990-12-12 Intaanashonaru Bijinesu Mashiinzu Corp
US5218497A (en) * 1988-12-02 1993-06-08 Hitachi, Ltd. Magnetic recording-reproducing apparatus and magnetoresistive head having two or more magnetoresistive films for use therewith

Also Published As

Publication number Publication date
FR2246923B1 ( ) 1978-08-11
ES430225A1 (es) 1976-10-01
IT1020145B (it) 1977-12-20
GB1447449A (en) 1976-08-25
AU7316074A (en) 1976-03-18
NL179007B (nl) 1986-01-16
DE2442565A1 (de) 1975-04-17
US3860965A (en) 1975-01-14
BR7408252D0 (pt) 1975-07-22
CH575696A5 ( ) 1976-05-14
NL179007C (nl) 1986-06-16
SE401284B (sv) 1978-04-24
JPS5337204B2 ( ) 1978-10-07
DE2442565C2 (de) 1985-04-25
NL7413099A (nl) 1975-04-08
SE7411850L ( ) 1975-04-07
FR2246923A1 ( ) 1975-05-02
CA1030654A (en) 1978-05-02
BE820322A (fr) 1975-01-16

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