DE3377520D1 - Magnetic detector - Google Patents

Magnetic detector

Info

Publication number
DE3377520D1
DE3377520D1 DE8383102537T DE3377520T DE3377520D1 DE 3377520 D1 DE3377520 D1 DE 3377520D1 DE 8383102537 T DE8383102537 T DE 8383102537T DE 3377520 T DE3377520 T DE 3377520T DE 3377520 D1 DE3377520 D1 DE 3377520D1
Authority
DE
Germany
Prior art keywords
magnetic detector
detector
magnetic
Prior art date
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.)
Expired
Application number
DE8383102537T
Other languages
English (en)
Inventor
Sadao Sekizawa
Toshio Seki
Tadashi Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3377520D1 publication Critical patent/DE3377520D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Magnetic Heads (AREA)
DE8383102537T 1982-03-15 1983-03-15 Magnetic detector Expired DE3377520D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57039574A JPS58158017A (ja) 1982-03-15 1982-03-15 磁気ヘツド

Publications (1)

Publication Number Publication Date
DE3377520D1 true DE3377520D1 (en) 1988-09-01

Family

ID=12556845

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383102537T Expired DE3377520D1 (en) 1982-03-15 1983-03-15 Magnetic detector

Country Status (5)

Country Link
US (1) US4639807A (de)
EP (1) EP0089059B1 (de)
JP (1) JPS58158017A (de)
CA (1) CA1226645A (de)
DE (1) DE3377520D1 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3583870D1 (de) * 1984-01-25 1991-10-02 Matsushita Electric Ind Co Ltd Magnetmessaufnehmer.
JPS60194311A (ja) * 1984-03-16 1985-10-02 Inoue Japax Res Inc 磁気エンコ−ダ
JPS61711A (ja) * 1984-06-14 1986-01-06 Inoue Japax Res Inc 磁気ヘツド
JPS61120915A (ja) * 1984-11-16 1986-06-09 Matsushita Electric Ind Co Ltd 磁気センサ
DE3447313A1 (de) * 1984-12-24 1986-07-03 Standard Elektrik Lorenz Ag Magnetfeldsensor
US4860432A (en) * 1986-09-02 1989-08-29 Alps Electric Co., Ltd. Method of manufacturing a magnetoresistive sensor
US4853631A (en) * 1987-11-04 1989-08-01 The Superior Electric Company Magnetoresistive sensor having inter-leaved magnetoresistive elements for detecting encoded magnetic information
US5047716A (en) * 1988-02-19 1991-09-10 K.K. Sankyo Seiki Seisakusho Movement detector employing constant current drive
JP2669631B2 (ja) * 1988-02-19 1997-10-29 株式会社三協精機製作所 磁気検出装置
US4954803A (en) * 1988-03-18 1990-09-04 Yamaha Corporation Magnetic-resistor sensor and a magnetic encoder using such a sensor
US4947035A (en) * 1988-08-08 1990-08-07 Cornell Research Foundation, Inc. Fiber optic transducer using faraday effect
JP2720681B2 (ja) * 1992-01-06 1998-03-04 株式会社村田製作所 移動体の移動検出装置
US5293125A (en) * 1992-01-17 1994-03-08 Lake Shore Cryotronics, Inc. Self-aligning tachometer with interchangeable elements for different resolution outputs
US5336994A (en) * 1992-11-20 1994-08-09 Lake Shore Cryotronics, Inc. Magneto-resistive tachometer assembly with reversible cover and related method
US5495758A (en) * 1993-06-17 1996-03-05 Lake Shore Cryotronics, Inc. Tachometer assembly with integral internal wrench
US5514955A (en) * 1994-03-11 1996-05-07 Lake Shore Cryotronics, Inc. Slim profile digital tachometer including planar block and rotor having spokes and clamp
US5545985A (en) * 1994-03-16 1996-08-13 Campbell; Peter Magnetoresistive position sensor including an encoder wherein the magnetization extends greater than 0.5 times the pole pitch below the surface
KR100368848B1 (ko) * 1994-04-15 2003-04-03 코닌클리케 필립스 일렉트로닉스 엔.브이. 자계센서,이센서를구비하는장치및이센서를제조하는방법
JP3344605B2 (ja) * 1994-06-17 2002-11-11 ソニー株式会社 磁気抵抗センサ
JP3367230B2 (ja) * 1994-10-25 2003-01-14 ソニー・プレシジョン・テクノロジー株式会社 位置検出装置
US6246233B1 (en) 1994-12-30 2001-06-12 Northstar Technologies Inc. Magnetoresistive sensor with reduced output signal jitter and temperature compensation
US5886520A (en) * 1995-01-24 1999-03-23 Canon Kabushiki Kaisha Position sensor having magnetic resistance effect devices for detecting a position of an object
JP3306305B2 (ja) * 1996-04-25 2002-07-24 株式会社三協精機製作所 モータ
US5929631A (en) * 1997-07-02 1999-07-27 Ford Global Technologies, Inc. Method of position sensing utilizing giant magneto resistance elements and solid state switch array
JP2002510109A (ja) * 1998-03-30 2002-04-02 ストーリッジ テクノロジー コーポレーション スプリット型上側磁極を備えた薄膜テープヘッド
JP2000134977A (ja) * 1998-10-29 2000-05-12 Alps Electric Co Ltd 多相モータの駆動装置
US7253611B2 (en) * 2002-11-08 2007-08-07 Beijing Aerospace Feng Guang Electronic Technical Corp. Ltd. Magnetic displacement ruler
DE502006009233D1 (de) * 2005-02-14 2011-05-19 Byk Chemie Gmbh Organosilan-modifizierte Polysiloxane und deren Verwendung zur Oberflächenmodifizierung
US11846529B2 (en) 2021-04-19 2023-12-19 Joral Llc Magnetic rack and pinion linear magnetic encoder and position sensing system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039936A (en) * 1976-04-05 1977-08-02 International Business Machines Corporation Interleaved magnetoresistive displacement transducers
US4418372A (en) * 1979-08-02 1983-11-29 Hitachi, Ltd. Magnetic rotary encoder
JPS6022738B2 (ja) * 1979-08-02 1985-06-04 株式会社日立製作所 位置検出装置
JPS6047988B2 (ja) * 1979-12-19 1985-10-24 株式会社日立製作所 磁気ヘツド

Also Published As

Publication number Publication date
EP0089059A3 (en) 1985-04-03
EP0089059B1 (de) 1988-07-27
JPH0140931B2 (de) 1989-09-01
JPS58158017A (ja) 1983-09-20
CA1226645A (en) 1987-09-08
EP0089059A2 (de) 1983-09-21
US4639807A (en) 1987-01-27

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Legal Events

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8364 No opposition during term of opposition