DE10011056B8 - Leseverstärker für magnetisches Speichersystem - Google Patents

Leseverstärker für magnetisches Speichersystem Download PDF

Info

Publication number: DE10011056B8
Authority: DE; Germany
Prior art keywords: storage system; sense amplifier; magnetic storage; magnetic; amplifier
Prior art date: 1999-03-17
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 - Fee Related

Application number

DE10011056A

Other languages

English (en)

Other versions

DE10011056A1 (de

DE10011056B4 (de

Inventor

Klaas Berend San Jose Klaassen

Jacobus Cornelis Leonardus van San Jose Peppen

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.)

HGST Netherlands BV

Original Assignee

Hitachi Global Storage Technologies Netherlands BV

Hitachi Global Storage Technologies Inc

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.)

1999-03-17

Filing date

2000-03-07

Publication date

2005-06-30

2000-03-07 Application filed by Hitachi Global Storage Technologies Netherlands BV, Hitachi Global Storage Technologies Inc filed Critical Hitachi Global Storage Technologies Netherlands BV

2000-09-28 Publication of DE10011056A1 publication Critical patent/DE10011056A1/de

2005-03-24 Publication of DE10011056B4 publication Critical patent/DE10011056B4/de

2005-06-30 Application granted granted Critical

2005-06-30 Publication of DE10011056B8 publication Critical patent/DE10011056B8/de

2020-03-08 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
- G11B5/3932—Magnetic biasing films
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
- 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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
- 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
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
- 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
- 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
- G11B2005/3996—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 large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices

Landscapes

Engineering & Computer Science (AREA)
Nanotechnology (AREA)
Chemical & Material Sciences (AREA)
Crystallography & Structural Chemistry (AREA)
Mathematical Physics (AREA)
Physics & Mathematics (AREA)
Power Engineering (AREA)
Theoretical Computer Science (AREA)
Manufacturing & Machinery (AREA)
Recording Or Reproducing By Magnetic Means (AREA)
Amplifiers (AREA)
Digital Magnetic Recording (AREA)
Magnetic Heads (AREA)
Networks Using Active Elements (AREA)

DE10011056A 1999-03-17 2000-03-07 Leseverstärker für magnetisches Speichersystem Expired - Fee Related DE10011056B8 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US09/271,359 US6606212B1 (en)	1999-03-17	1999-03-17	Wideband readout of magneto-resistive heads for data storage
US09/271,359		1999-03-17

Publications (3)

Publication Number	Publication Date
DE10011056A1 DE10011056A1 (de)	2000-09-28
DE10011056B4 DE10011056B4 (de)	2005-03-24
DE10011056B8 true DE10011056B8 (de)	2005-06-30

Family

ID=23035233

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE10011056A Expired - Fee Related DE10011056B8 (de)	1999-03-17	2000-03-07	Leseverstärker für magnetisches Speichersystem

Country Status (8)

Country	Link
US (1)	US6606212B1 (de)
JP (1)	JP2000285403A (de)
KR (1)	KR100358455B1 (de)
CN (1)	CN1208755C (de)
DE (1)	DE10011056B8 (de)
MY (1)	MY123425A (de)
SG (1)	SG97143A1 (de)
TW (1)	TW504683B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP3841213B2 (ja)	2002-11-13	2006-11-01	ソニー株式会社	印画装置及び印画方法
US7251091B2 (en) *	2003-12-30	2007-07-31	Texas Instruments Incorporated	Current-sense bias circuit for a magnetoresistive head and method of sensing a current therethrough
US20050244167A1 (en) *	2004-04-29	2005-11-03	Liew Sanyuan	Signal-to-noise ratio (SNR) value characterization in a data recovery channel
US7667914B2 (en) *	2006-04-17	2010-02-23	Hitachi Global Storage Technologies Netherlands B.V.	Direct coupled wide-bandwidth front-end with smart bias control amplifier
US7961418B2 (en) *	2007-05-09	2011-06-14	Texas Instruments Incorporated	Resistivity sense bias circuits and methods of operating the same
IT1392043B1 (it) *	2008-09-12	2012-02-09	St Microelectronics Srl	Circuito di rilevazione di corrente per applicazioni pwm con modulazione a larghezza d'impulso e relativo processo
TWI616263B (zh) *	2016-12-27	2018-03-01	裕隆汽車製造股份有限公司	雷射焊接的異常事件的偵測方法及其偵測系統

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4039981A (en) *	1975-04-04	1977-08-02	Hitachi, Ltd.	Variable impedance circuit
EP0004099B1 (de) *	1978-03-14	1982-05-26	Kabushiki Kaisha Toshiba	Elektrisch einstellbare Impedanzschaltung
EP0805436A2 (de) *	1992-10-30	1997-11-05	Sony Corporation	Wiedergabeschaltung für einen Magnetkopf

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4105943A (en)	1976-09-15	1978-08-08	Siemens Aktiengesellschaft	Integrated amplifier with negative feedback
US4706138A (en)	1986-04-14	1987-11-10	International Business Machines Corporation	Amplification of signals produced by a magnetic sensor
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
US5103353A (en)	1990-05-01	1992-04-07	International Business Machines Corporation	Low noise amplifier with short circuit protection for signals from magnetoresistive element
JP2520770B2 (ja)	1990-07-06	1996-07-31	富士通株式会社	ハイブリッド回路
US5122915A (en)	1990-09-26	1992-06-16	Minnesota Mining And Manufacturing Company	Low-noise preamplifier for magneto-resistive heads
US5204789A (en)	1991-01-31	1993-04-20	International Business Machines Corporation	Low noise voltage-biasing amplifier for magnetoresistive element
JPH06119622A (ja) *	1992-10-05	1994-04-28	Sony Corp	磁気抵抗効果型ヘッド用再生装置
US5309298A (en) *	1992-11-24	1994-05-03	International Business Machines Corporation	Suppression of magnetic instability in inductive recording heads
JPH06208707A (ja) *	1993-01-11	1994-07-26	Sharp Corp	磁気信号読取装置
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
JPH06338005A (ja) *	1993-05-26	1994-12-06	Canon Inc	磁気記録再生装置
US5374861A (en)	1993-09-10	1994-12-20	Unisys Corporation	Differential termination network for differential transmitters and receivers
JPH10505988A (ja) *	1995-03-01	1998-06-09	ラティスセミコンダクタコーポレイション	安定補償用能動抵抗
JPH08273103A (ja) *	1995-03-30	1996-10-18	Matsushita Electric Ind Co Ltd	磁気記録信号の再生装置

1999
- 1999-03-17 US US09/271,359 patent/US6606212B1/en not_active Expired - Lifetime
2000
- 2000-02-22 MY MYPI20000646A patent/MY123425A/en unknown
- 2000-02-23 TW TW089103189A patent/TW504683B/zh active
- 2000-03-02 KR KR1020000010362A patent/KR100358455B1/ko not_active IP Right Cessation
- 2000-03-06 SG SG200001240A patent/SG97143A1/en unknown
- 2000-03-07 DE DE10011056A patent/DE10011056B8/de not_active Expired - Fee Related
- 2000-03-13 JP JP2000068582A patent/JP2000285403A/ja active Pending
- 2000-03-16 CN CNB001040561A patent/CN1208755C/zh not_active Expired - Fee Related

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4039981A (en) *	1975-04-04	1977-08-02	Hitachi, Ltd.	Variable impedance circuit
EP0004099B1 (de) *	1978-03-14	1982-05-26	Kabushiki Kaisha Toshiba	Elektrisch einstellbare Impedanzschaltung
EP0805436A2 (de) *	1992-10-30	1997-11-05	Sony Corporation	Wiedergabeschaltung für einen Magnetkopf

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MEINKE/GUNDLACH, Taschenbuch der Hochfrequenz- technik, 4. Aufl. Springer Verlag 1986, S. C32 *

Also Published As

Publication number	Publication date
CN1267879A (zh)	2000-09-27
DE10011056A1 (de)	2000-09-28
KR20000062710A (ko)	2000-10-25
SG97143A1 (en)	2003-07-18
KR100358455B1 (ko)	2002-10-25
DE10011056B4 (de)	2005-03-24
JP2000285403A (ja)	2000-10-13
CN1208755C (zh)	2005-06-29
MY123425A (en)	2006-05-31
TW504683B (en)	2002-10-01
US6606212B1 (en)	2003-08-12

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DE60015748D1 (de)	2004-12-16	Speichermedien
DE19882586T1 (de)	2000-08-03	Gleitstück für Datenspeichersystem
DE60121276D1 (de)	2006-08-17	Unterteiltes Lagerungssystem
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DE10007428B8 (de)	2008-06-26	Magnetlager
FI19992240L (fi)	2000-04-19	Vahvistinjärjestelmä
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DE60022196D1 (de)	2005-09-29	Datenspeichersystem
DE60027989D1 (de)	2006-06-22	Leistungsverstärkersystem für ein Antennensystem
DE60106131D1 (de)	2004-11-11	Handhabungssystem für Gegenstände
DE69934456D1 (de)	2007-02-01	Speichervorrichtung für Aufzeichnungsträger

Legal Events

Date	Code	Title	Description
2000-09-28	OP8	Request for examination as to paragraph 44 patent law
2004-07-15	8128	New person/name/address of the agent	Representative=s name: STREHL, SCHUEBEL-HOPF & PARTNER, 80538 MUENCHEN
2005-05-12	8327	Change in the person/name/address of the patent owner	Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.
2005-06-30	8396	Reprint of erroneous front page
2005-09-22	8364	No opposition during term of opposition
2009-01-22	8339	Ceased/non-payment of the annual fee