GB2023326A – Magnetoresistive reading head
– Google Patents
GB2023326A – Magnetoresistive reading head
– Google Patents
Magnetoresistive reading head
Info
Publication number
GB2023326A
GB2023326A
GB7920849A
GB7920849A
GB2023326A
GB 2023326 A
GB2023326 A
GB 2023326A
GB 7920849 A
GB7920849 A
GB 7920849A
GB 7920849 A
GB7920849 A
GB 7920849A
GB 2023326 A
GB2023326 A
GB 2023326A
Authority
GB
United Kingdom
Prior art keywords
reading head
magnetoresistive reading
magnetoresistive
head
reading
Prior art date
1978-06-19
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
GB7920849A
Other versions
GB2023326B
(en
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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.)
1978-06-19
Filing date
1979-06-15
Publication date
1979-12-28
1979-06-15
Application filed by Philips Gloeilampenfabrieken NV
filed
Critical
Philips Gloeilampenfabrieken NV
1979-12-28
Publication of GB2023326A
publication
Critical
patent/GB2023326A/en
1982-09-22
Application granted
granted
Critical
1982-09-22
Publication of GB2023326B
publication
Critical
patent/GB2023326B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
GB7920849A
1978-06-19
1979-06-15
Magnetoresistive reading head
Expired
GB2023326B
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL7806568A
NL7806568A
(en)
1978-06-19
1978-06-19
MAGNETO RESISTANCE READ HEAD.
Publications (2)
Publication Number
Publication Date
GB2023326A
true
GB2023326A
(en)
1979-12-28
GB2023326B
GB2023326B
(en)
1982-09-22
Family
ID=19831059
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7920849A
Expired
GB2023326B
(en)
1978-06-19
1979-06-15
Magnetoresistive reading head
Country Status (9)
Country
Link
US
(1)
US4280158A
(en)
JP
(1)
JPS589484B2
(en)
CA
(1)
CA1129997A
(en)
DE
(1)
DE2923863C3
(en)
ES
(1)
ES481612A1
(en)
FR
(1)
FR2429472A1
(en)
GB
(1)
GB2023326B
(en)
IT
(1)
IT1121585B
(en)
NL
(1)
NL7806568A
(en)
Cited By (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0053343A1
(en)
*
1980-11-28
1982-06-09
Hitachi, Ltd.
Reproducing and amplifying circuit for magnetoresistive head
WO1985000070A1
(en)
*
1983-06-15
1985-01-03
Eastman Kodak Company
Inductively-coupled, thin-film m-r head
EP0173942A2
(en)
*
1984-08-27
1986-03-12
Sony Corporation
Magnetoresistance effect type magnetic head apparatus
EP0215270A1
(en)
*
1985-08-20
1987-03-25
International Business Machines Corporation
Method and apparatus for reading recorded data by a magnetoresistive head
EP0154307A3
(en)
*
1984-03-01
1987-12-23
Sony Corporation
Magnetic transducer head utilizing the magnetoresistance effect
EP0834864A2
(en)
*
1996-10-03
1998-04-08
Hewlett-Packard Company
Actively stabilized magnetoresistive head
Families Citing this family (25)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3014469A1
(en)
*
1980-04-15
1981-10-22
Siemens AG, 1000 Berlin und 8000 München
MAGNETORESISTIVE 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
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
(en)
*
1982-04-21
1983-10-28
Toshiba Corp
Magnetic reproducer
US4476454A
(en)
*
1983-06-30
1984-10-09
International Business Machines Corporation
New magnetoresistive materials
JPS60263310A
(en)
*
1984-06-08
1985-12-26
Sony Corp
Magneto-resistance effect type magnetic head device
JPS6157011A
(en)
*
1984-08-27
1986-03-22
Sony Corp
Magnetoresistance effect type magnetic head device
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
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
(en)
*
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
Method and apparatus for measuring thin film head non-linearity
JP2707191B2
(en)
*
1992-10-19
1998-01-28
シャープ株式会社
Multitrack magnetic signal reproducing device
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
(en)
*
1993-02-22
1999-12-27
富士通株式会社
Preamplifier for magnetoresistive element
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
US5963400A
(en)
*
1997-02-21
1999-10-05
Storage Technology Corporation
Thin film tape head including split top pole
AU8902598A
(en)
*
1997-08-12
1999-03-01
Itron Inc.
Method and apparatus for use of magnetic flux in electronic and signal processi ng systems
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
(en)
*
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
(en)
*
1976-10-19
1978-04-21
Philips Nv
MAGNETO RESISTANCE READING HEAD WITH THERMAL NOISE REDUCTION.
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
1978
1978-06-19
NL
NL7806568A
patent/NL7806568A/en
not_active
Application Discontinuation
1979
1979-06-06
US
US06/045,908
patent/US4280158A/en
not_active
Expired – Lifetime
1979-06-13
DE
DE2923863A
patent/DE2923863C3/en
not_active
Expired
1979-06-14
CA
CA329,737A
patent/CA1129997A/en
not_active
Expired
1979-06-15
FR
FR7915468A
patent/FR2429472A1/en
active
Granted
1979-06-15
IT
IT23641/79A
patent/IT1121585B/en
active
1979-06-15
GB
GB7920849A
patent/GB2023326B/en
not_active
Expired
1979-06-16
JP
JP54075193A
patent/JPS589484B2/en
not_active
Expired
1979-06-16
ES
ES481612A
patent/ES481612A1/en
not_active
Expired
Cited By (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0053343A1
(en)
*
1980-11-28
1982-06-09
Hitachi, Ltd.
Reproducing and amplifying circuit for magnetoresistive head
WO1985000070A1
(en)
*
1983-06-15
1985-01-03
Eastman Kodak Company
Inductively-coupled, thin-film m-r head
EP0154307A3
(en)
*
1984-03-01
1987-12-23
Sony Corporation
Magnetic transducer head utilizing the magnetoresistance effect
EP0173942A2
(en)
*
1984-08-27
1986-03-12
Sony Corporation
Magnetoresistance effect type magnetic head apparatus
EP0173942A3
(en)
*
1984-08-27
1987-12-02
Sony Corporation
Magnetoresistance effect type magnetic head apparatus
EP0215270A1
(en)
*
1985-08-20
1987-03-25
International Business Machines Corporation
Method and apparatus for reading recorded data by a magnetoresistive head
EP0834864A2
(en)
*
1996-10-03
1998-04-08
Hewlett-Packard Company
Actively stabilized magnetoresistive head
EP0834864A3
(en)
*
1996-10-03
1998-08-12
Hewlett-Packard Company
Actively stabilized magnetoresistive head
US5930062A
(en)
*
1996-10-03
1999-07-27
Hewlett-Packard Company
Actively stabilized magnetoresistive head
Also Published As
Publication number
Publication date
NL7806568A
(en)
1979-12-21
DE2923863B2
(en)
1981-01-08
IT7923641D0
(en)
1979-06-15
ES481612A1
(en)
1980-01-16
IT1121585B
(en)
1986-04-02
US4280158A
(en)
1981-07-21
CA1129997A
(en)
1982-08-17
JPS589484B2
(en)
1983-02-21
JPS551698A
(en)
1980-01-08
FR2429472B1
(en)
1984-10-19
DE2923863C3
(en)
1981-11-19
DE2923863A1
(en)
1979-12-20
GB2023326B
(en)
1982-09-22
FR2429472A1
(en)
1980-01-18
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Legal Events
Date
Code
Title
Description
1999-02-03
PCNP
Patent ceased through non-payment of renewal fee
Effective date:
19980615
