IT1074425B - Trasuttore magnetoresistivo perfezionato - Google Patents

Trasuttore magnetoresistivo perfezionato

Info

Publication number
IT1074425B
IT1074425B IT26827/76A IT2682776A IT1074425B IT 1074425 B IT1074425 B IT 1074425B IT 26827/76 A IT26827/76 A IT 26827/76A IT 2682776 A IT2682776 A IT 2682776A IT 1074425 B IT1074425 B IT 1074425B
Authority
IT
Italy
Prior art keywords
perfected
magnetoresistive transfer
magnetoresistive
transfer
transfer perfected
Prior art date
Application number
IT26827/76A
Other languages
English (en)
Italian (it)
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
Application granted granted Critical
Publication of IT1074425B publication Critical patent/IT1074425B/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
    • 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
    • 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
    • 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
    • G11B5/127—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
    • 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
    • G11B5/3958—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged in a single plane, e.g. "matrix" disposition
    • G11B5/3961—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged in a single plane, e.g. "matrix" disposition disposed at an angle to the direction of the track or relative movement
    • G11B5/3964—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged in a single plane, e.g. "matrix" disposition disposed at an angle to the direction of the track or relative movement for transducing on a single track

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Magnetic Heads (AREA)
  • Measuring Magnetic Variables (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
IT26827/76A 1975-09-08 1976-09-03 Trasuttore magnetoresistivo perfezionato IT1074425B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/611,466 US3979775A (en) 1975-09-08 1975-09-08 Magnetoresistive multitransducer assembly with compensation elements for thermal drift and bias balancing

Publications (1)

Publication Number Publication Date
IT1074425B true IT1074425B (it) 1985-04-20

Family

ID=24449142

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26827/76A IT1074425B (it) 1975-09-08 1976-09-03 Trasuttore magnetoresistivo perfezionato

Country Status (7)

Country Link
US (1) US3979775A (cg-RX-API-DMAC7.html)
JP (1) JPS5233508A (cg-RX-API-DMAC7.html)
DE (1) DE2639897A1 (cg-RX-API-DMAC7.html)
FR (1) FR2323204A1 (cg-RX-API-DMAC7.html)
GB (1) GB1533460A (cg-RX-API-DMAC7.html)
IT (1) IT1074425B (cg-RX-API-DMAC7.html)
NL (1) NL7609523A (cg-RX-API-DMAC7.html)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239968Y2 (cg-RX-API-DMAC7.html) * 1972-07-26 1977-09-09
US4190871A (en) * 1975-06-13 1980-02-26 U.S. Philips Corporation Magnetic converter having a magnetoresistive element
FR2315139A1 (fr) * 1975-06-19 1977-01-14 Cii Nouvelle structure de tete magnetique integree
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.
FR2389180A1 (fr) * 1977-04-29 1978-11-24 Cii Honeywell Bull Dispositif de transduction magnetique de detection d'informations magnetiques codees et procede de fabrication dudit dispositif
US4506220A (en) * 1980-11-10 1985-03-19 Canon Kabushiki Kaisha Temperature compensated magnetoresistive effect thin film magnetic sensor
US4492997A (en) * 1980-11-28 1985-01-08 Hitachi, Ltd. Reproducing and amplifying circuit for magnetoresistive head
EP0081240B1 (en) * 1981-12-09 1989-06-28 Matsushita Electric Industrial Co., Ltd. Thin film magnetic head
JPS58154615A (ja) * 1982-03-10 1983-09-14 Copal Co Ltd 磁気検出装置
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
JPS6047223A (ja) * 1983-08-25 1985-03-14 Sony Corp 磁気抵抗効果型磁気ヘツド
JPS60150222A (ja) * 1984-01-13 1985-08-07 Matsushita Electric Ind Co Ltd 薄膜磁気ヘツド
US4703378A (en) * 1984-03-01 1987-10-27 Sony Corporation Magnetic transducer head utilizing magnetoresistance effect
CA1248222A (en) * 1984-08-27 1989-01-03 Yutaka Souda Magnetic transducer head utilizing magnetoresistance effect
JPS61107520A (ja) * 1984-10-31 1986-05-26 Sony Corp 多チヤンネル磁気抵抗効果型磁気ヘツド
JPS61280013A (ja) * 1985-06-05 1986-12-10 Hitachi Ltd 磁気抵抗効果型再生ヘツド
JPS62184616A (ja) * 1986-02-10 1987-08-13 Hitachi Ltd 磁気抵抗効果型磁気ヘツド
US4786993A (en) * 1986-06-30 1988-11-22 International Business Machines Corporation Voltage amplifier for constant voltage biasing and amplifying signals from a MR sensor
JP2776824B2 (ja) * 1988-03-25 1998-07-16 株式会社日立製作所 マルチトラック薄膜磁気ヘッドの端子引出方法
JPH03257387A (ja) * 1990-03-08 1991-11-15 Matsushita Electric Ind Co Ltd 磁気抵抗素子の駆動回路
US5483162A (en) * 1991-10-30 1996-01-09 Sankyo Saiki Mfg. Co., Ltd. Magnetic detector for a frequency generator responsive to motor rotation
US5311385A (en) * 1991-12-18 1994-05-10 Minnesota Mining And Manufacturing Company Magnetoresistive head with integrated bias and magnetic shield layer
US5260653A (en) * 1992-06-03 1993-11-09 Eastman Kodak Company Thin film very high sensitivity magnetoresistive magnetometer having temperature compensation and simple domain stability
DE69316304T2 (de) * 1992-10-09 1998-07-23 Koninkl Philips Electronics Nv Aufzeichnungsvorrichtung mit temperaturabhängiger Schreibstromsteuerung
US5301080A (en) * 1992-12-31 1994-04-05 International Business Machines Corporation Bias servo loop for magneto-resistive read/write head
KR950008750B1 (ko) * 1993-02-05 1995-08-04 대우전자주식회사 준고정 헤드 영상 신호 기록 및 재생 장치
US5390054A (en) * 1993-03-12 1995-02-14 Minnesota Mining And Manufacturing Company Method and system for minimizing the error rate of a digital recording system by predicting the optimal bias current
US5644228A (en) * 1993-08-31 1997-07-01 Eastman Kodak Company Permanent magnet assembly with MR and DC compensating bias
US5661614A (en) * 1994-05-31 1997-08-26 International Business Machines Corporation Method and apparatus for error recovery for unstable magnetorestrictive heads
US6038090A (en) * 1996-04-03 2000-03-14 International Business Machines Corporation Method and apparatus for improving baseline recovery of an MR head using a programmable recovery time constant
US5917680A (en) * 1996-06-24 1999-06-29 Read-Rite Corporation Magnetoresistive head with magnetic bias level control
US5986839A (en) * 1996-09-17 1999-11-16 International Business Machines Corporation Electronic magnetoresistive sensor biasing using a transducer equivalent circuit and current sources
EP0860825A3 (en) 1997-02-25 1999-05-12 Hitachi, Ltd. Information storage device having transducers operating in a pulse mode in synchronism with a clock
US6104563A (en) 1998-01-30 2000-08-15 Maxtor Corporation Bias modulated MR head used to minimize or eliminate thermal signals
US6452735B1 (en) 1999-07-19 2002-09-17 Maxtor Corporation Disk drive that monitors the flying height of a dual element transducer using a thermally induced signal during write operations
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
US6975467B1 (en) 2000-10-11 2005-12-13 Maxtor Corporation Method and apparatus for high fly write detection in a disk drive
WO2005020214A1 (ja) * 2003-08-26 2005-03-03 Fujitsu Limited 再生ヘッド及び磁気ディスク装置
US8922935B1 (en) * 2013-08-28 2014-12-30 Seagate Technology Llc First and second read sensors coupled to a preamplifier via a common signal line
US9099156B2 (en) * 2013-10-08 2015-08-04 Marvell World Trade Ltd. Two-dimensional magnetic recording systems and methods for minimizing and accounting for inter-modulation of signals induced in adjacent read elements
CN104575527B (zh) * 2013-10-08 2018-10-09 马维尔国际贸易有限公司 二维磁记录系统和方法
US9218822B1 (en) 2015-05-13 2015-12-22 HGST Netherlands B.V. Disk drive with preamplifier with isolation for multiple readers in a slider with a common return signal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731007A (en) * 1971-04-19 1973-05-01 Denki Onkyo Co Ltd Magnetic head having a magneto-resistive bridge circuit
NL7309590A (nl) * 1973-07-10 1975-01-14 Philips Nv Inrichting voor het sturen van de positie van een magneetkop ten opzichte van een te volgen informatiespoor.
US3881190A (en) * 1973-09-20 1975-04-29 Ibm Shielded magnetoresistive magnetic transducer and method of manufacture thereof
US3860965A (en) * 1973-10-04 1975-01-14 Ibm Magnetoresistive read head assembly having matched elements for common mode rejection
US3883858A (en) * 1973-12-17 1975-05-13 Ampex Magnetoresistive readout transducer for sensing magnetic domains in thin film memories

Also Published As

Publication number Publication date
US3979775A (en) 1976-09-07
JPS5233508A (en) 1977-03-14
FR2323204A1 (fr) 1977-04-01
FR2323204B1 (cg-RX-API-DMAC7.html) 1978-05-05
GB1533460A (en) 1978-11-22
NL7609523A (nl) 1977-03-10
DE2639897A1 (de) 1977-03-31

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