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IT1121585B - Testina di lettura di tipo magnetoresistivo - Google Patents

Testina di lettura di tipo magnetoresistivo

Info

Publication number
IT1121585B
IT1121585B IT23641/79A IT2364179A IT1121585B IT 1121585 B IT1121585 B IT 1121585B IT 23641/79 A IT23641/79 A IT 23641/79A IT 2364179 A IT2364179 A IT 2364179A IT 1121585 B IT1121585 B IT 1121585B
Authority
IT
Italy
Prior art keywords
reading head
type reading
magnetoresistive type
magnetoresistive
head
Prior art date
Application number
IT23641/79A
Other languages
English (en)
Other versions
IT7923641A0 (it
Original Assignee
Philips 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 Philips Nv filed Critical Philips Nv
Publication of IT7923641A0 publication Critical patent/IT7923641A0/it
Application granted granted Critical
Publication of IT1121585B publication Critical patent/IT1121585B/it

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
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording
    • G11B5/035—Equalising
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Measuring Magnetic Variables (AREA)
IT23641/79A 1978-06-19 1979-06-15 Testina di lettura di tipo magnetoresistivo IT1121585B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7806568A NL7806568A (nl) 1978-06-19 1978-06-19 Magnetoweerstand leeskop.

Publications (2)

Publication Number Publication Date
IT7923641A0 IT7923641A0 (it) 1979-06-15
IT1121585B true IT1121585B (it) 1986-04-02

Family

ID=19831059

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23641/79A IT1121585B (it) 1978-06-19 1979-06-15 Testina di lettura di tipo magnetoresistivo

Country Status (9)

Country Link
US (1) US4280158A (it)
JP (1) JPS589484B2 (it)
CA (1) CA1129997A (it)
DE (1) DE2923863C3 (it)
ES (1) ES481612A1 (it)
FR (1) FR2429472A1 (it)
GB (1) GB2023326B (it)
IT (1) IT1121585B (it)
NL (1) NL7806568A (it)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014469A1 (de) * 1980-04-15 1981-10-22 Siemens AG, 1000 Berlin und 8000 München Magnetoresistiver sensor
US4356523A (en) * 1980-06-09 1982-10-26 Ampex Corporation Narrow track magnetoresistive transducer assembly
US4343026A (en) * 1980-07-09 1982-08-03 Spin Physics, Inc. Magnetoresistive head employing field feedback
US4506220A (en) * 1980-11-10 1985-03-19 Canon Kabushiki Kaisha Temperature compensated magnetoresistive effect thin film magnetic sensor
EP0053343A1 (en) * 1980-11-28 1982-06-09 Hitachi, Ltd. Reproducing and amplifying circuit for magnetoresistive head
JPS5792403A (en) * 1980-11-28 1982-06-09 Hitachi Ltd Regenerative amplifying circuit for mr head
JPS5798103A (en) * 1980-12-10 1982-06-18 Hitachi Ltd Regenerative amplifying circuit for magnetic reluctance effective type magnetic head
JPS58185007A (ja) * 1982-04-21 1983-10-28 Toshiba Corp 磁気再生装置
US4599668A (en) * 1983-06-15 1986-07-08 Eastman Kodak Company Inductively-coupled, thin-film M-R head
US4476454A (en) * 1983-06-30 1984-10-09 International Business Machines Corporation New magnetoresistive materials
US4703378A (en) * 1984-03-01 1987-10-27 Sony Corporation Magnetic transducer head utilizing magnetoresistance effect
JPS60263310A (ja) * 1984-06-08 1985-12-26 Sony Corp 磁気抵抗効果型磁気ヘツド装置
JPS6157011A (ja) * 1984-08-27 1986-03-22 Sony Corp 磁気抵抗効果型磁気ヘツド装置
CA1248222A (en) * 1984-08-27 1989-01-03 Yutaka Souda Magnetic transducer head utilizing magnetoresistance effect
US4783711A (en) * 1985-07-12 1988-11-08 Hitachi, Ltd. Magnetoresistive sensor having magnetic shields of ferrite
US4649447A (en) * 1985-08-15 1987-03-10 International Business Machines Combed MR sensor
US4712144A (en) * 1985-08-20 1987-12-08 International Business Machines Corporation Method and apparatus for reading recorded data by a magnetoresistive head
US5107385A (en) * 1989-11-16 1992-04-21 Applied Magnetics Corporation Read head assembly for multiple-width tracks
US5216560A (en) * 1989-11-22 1993-06-01 Hewlett-Packard Company Stabilization of magnetoresistive sensors using the longitudinal field produced by the current in the contact leads
US5065094A (en) * 1990-08-07 1991-11-12 Seagate Technology, Inc. Two terminal magnetoresistive sensor having DC blocking capacitor
JPH07105009B2 (ja) * 1991-05-31 1995-11-13 インターナショナル・ビジネス・マシーンズ・コーポレイション 薄膜ヘッドの非線形性を測定するための方法及び装置
JP2707191B2 (ja) * 1992-10-19 1998-01-28 シャープ株式会社 マルチトラック磁気信号再生装置
US5309298A (en) * 1992-11-24 1994-05-03 International Business Machines Corporation Suppression of magnetic instability in inductive recording heads
US5301080A (en) * 1992-12-31 1994-04-05 International Business Machines Corporation Bias servo loop for magneto-resistive read/write head
JP2994522B2 (ja) * 1993-02-22 1999-12-27 富士通株式会社 磁気抵抗素子用プリアンプ
US5696445A (en) * 1994-09-26 1997-12-09 Phase Metrics Method and apparatus for testing the resistive properties of magneto resistive materials using a time variable magnetic field
US6166539A (en) * 1996-10-30 2000-12-26 Regents Of The University Of Minnesota Magnetoresistance sensor having minimal hysteresis problems
US5747997A (en) * 1996-06-05 1998-05-05 Regents Of The University Of Minnesota Spin-valve magnetoresistance sensor having minimal hysteresis problems
US5930062A (en) * 1996-10-03 1999-07-27 Hewlett-Packard Company Actively stabilized magnetoresistive head
US5963400A (en) * 1997-02-21 1999-10-05 Storage Technology Corporation Thin film tape head including split top pole
WO1999008263A1 (en) * 1997-08-12 1999-02-18 Itron, Inc. Magnetic flux processing apparatus and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975241A (en) * 1956-12-12 1961-03-14 Armour Res Found Means for counteracting shunt reluctance of a transducer head gap
US3493694A (en) * 1966-01-19 1970-02-03 Ampex Magnetoresistive head
BE704863A (it) * 1967-10-09 1968-02-15
US4050086A (en) * 1976-05-06 1977-09-20 International Business Machines Corporation Dynamic transducer biasing signal amplifying circuitry
NL7611522A (nl) * 1976-10-19 1978-04-21 Philips Nv Magnetoweerstand leeskop met onderdrukking van thermischhe ruis.
US4075671A (en) * 1976-11-24 1978-02-21 International Business Machines Corporation Automatic ac biasing of a magnetoresistive element
GB2012095A (en) * 1978-01-03 1979-07-18 Burroughs Corp Cancellation of thermal noise in magnetoresistive heads

Also Published As

Publication number Publication date
IT7923641A0 (it) 1979-06-15
DE2923863C3 (de) 1981-11-19
JPS551698A (en) 1980-01-08
ES481612A1 (es) 1980-01-16
NL7806568A (nl) 1979-12-21
DE2923863B2 (de) 1981-01-08
DE2923863A1 (de) 1979-12-20
GB2023326A (en) 1979-12-28
GB2023326B (en) 1982-09-22
US4280158A (en) 1981-07-21
FR2429472B1 (it) 1984-10-19
JPS589484B2 (ja) 1983-02-21
CA1129997A (en) 1982-08-17
FR2429472A1 (fr) 1980-01-18

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970630