DE2639897A1 - Magnetoresistive mehrfachkopfanordnung - Google Patents
Magnetoresistive mehrfachkopfanordnungInfo
- Publication number
- DE2639897A1 DE2639897A1 DE19762639897 DE2639897A DE2639897A1 DE 2639897 A1 DE2639897 A1 DE 2639897A1 DE 19762639897 DE19762639897 DE 19762639897 DE 2639897 A DE2639897 A DE 2639897A DE 2639897 A1 DE2639897 A1 DE 2639897A1
- Authority
- DE
- Germany
- Prior art keywords
- magnetoresistive
- elements
- compensation element
- bias
- head arrangement
- 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.)
- Ceased
Links
- 230000008859 change Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 description 14
- 239000004020 conductor Substances 0.000 description 13
- 230000007704 transition Effects 0.000 description 10
- 239000010408 film Substances 0.000 description 8
- 230000001629 suppression Effects 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000889 permalloy Inorganic materials 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052774 Proactinium Inorganic materials 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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)
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 |
|---|---|
| DE2639897A1 true DE2639897A1 (de) | 1977-03-31 |
Family
ID=24449142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762639897 Ceased DE2639897A1 (de) | 1975-09-08 | 1976-09-04 | Magnetoresistive mehrfachkopfanordnung |
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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2818978A1 (de) * | 1977-04-29 | 1978-11-02 | Cii Honeywell Bull | Einrichtung zur abtastung von kodierten magnetisch aufgezeichneten informationen und verfahren zu ihrer herstellung |
| EP0137676A1 (en) * | 1983-08-25 | 1985-04-17 | Sony Corporation | Magnetic transducer heads utilizing magnetoresistance effect |
| EP0180201A3 (en) * | 1984-10-31 | 1988-03-16 | Sony Corporation | Multi-channel magnetic transducer head utilizing magnetoresistance effect |
Families Citing this family (41)
| 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. |
| 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 |
| 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 |
| 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)
| 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 |
-
1975
- 1975-09-08 US US05/611,466 patent/US3979775A/en not_active Expired - Lifetime
-
1976
- 1976-07-27 FR FR7623635A patent/FR2323204A1/fr active Granted
- 1976-08-25 GB GB35294/76A patent/GB1533460A/en not_active Expired
- 1976-08-27 JP JP51101761A patent/JPS5233508A/ja active Pending
- 1976-08-27 NL NL7609523A patent/NL7609523A/xx not_active Application Discontinuation
- 1976-09-03 IT IT26827/76A patent/IT1074425B/it active
- 1976-09-04 DE DE19762639897 patent/DE2639897A1/de not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2818978A1 (de) * | 1977-04-29 | 1978-11-02 | Cii Honeywell Bull | Einrichtung zur abtastung von kodierten magnetisch aufgezeichneten informationen und verfahren zu ihrer herstellung |
| EP0137676A1 (en) * | 1983-08-25 | 1985-04-17 | Sony Corporation | Magnetic transducer heads utilizing magnetoresistance effect |
| EP0180201A3 (en) * | 1984-10-31 | 1988-03-16 | Sony Corporation | Multi-channel magnetic transducer head utilizing magnetoresistance effect |
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 |
| IT1074425B (it) | 1985-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8131 | Rejection |