BR7906297A - Aparelho para reproduzir dados gravados de um meio de gravacao - Google Patents
Aparelho para reproduzir dados gravados de um meio de gravacaoInfo
- Publication number
- BR7906297A BR7906297A BR7906297A BR7906297A BR7906297A BR 7906297 A BR7906297 A BR 7906297A BR 7906297 A BR7906297 A BR 7906297A BR 7906297 A BR7906297 A BR 7906297A BR 7906297 A BR7906297 A BR 7906297A
- Authority
- BR
- Brazil
- Prior art keywords
- appliance
- inductive circuit
- circuit means
- recording media
- recorded data
- Prior art date
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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/027—Analogue recording
-
- 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
- G11B5/03—Biasing
-
- 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
Landscapes
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Amplifiers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Hall/Mr Elements (AREA)
- Digital Magnetic Recording (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
- Traffic Control Systems (AREA)
- Measuring Magnetic Variables (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/947,308 US4191977A (en) | 1978-09-29 | 1978-09-29 | Biasing of magnetoresistive read head using gyrators |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7906297A true BR7906297A (pt) | 1980-07-08 |
Family
ID=25485930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7906297A BR7906297A (pt) | 1978-09-29 | 1979-10-01 | Aparelho para reproduzir dados gravados de um meio de gravacao |
Country Status (14)
Country | Link |
---|---|
US (1) | US4191977A (pt) |
EP (1) | EP0009531B1 (pt) |
JP (1) | JPS594769B2 (pt) |
AT (1) | ATE2102T1 (pt) |
AU (1) | AU526085B2 (pt) |
BR (1) | BR7906297A (pt) |
CA (1) | CA1127299A (pt) |
DE (1) | DE2964345D1 (pt) |
DK (1) | DK409979A (pt) |
ES (1) | ES483738A1 (pt) |
FI (1) | FI792821A (pt) |
NO (1) | NO792939L (pt) |
SU (1) | SU1075997A3 (pt) |
ZA (1) | ZA793444B (pt) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4259703A (en) * | 1978-06-20 | 1981-03-31 | Emi Limited | Magneto resistive magnetic transducers |
GB2037474B (en) * | 1978-12-11 | 1983-08-24 | Racal Recorders Ltd | Magneting recording and reproduction |
EP0053343A1 (en) * | 1980-11-28 | 1982-06-09 | Hitachi, Ltd. | Reproducing and amplifying circuit for magnetoresistive head |
JPS59112421A (ja) * | 1982-12-16 | 1984-06-28 | Nec Corp | 磁気ヘツド |
US4712144A (en) * | 1985-08-20 | 1987-12-08 | International Business Machines Corporation | Method and apparatus for reading recorded data by a magnetoresistive head |
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 |
JPS63176951A (ja) * | 1987-01-19 | 1988-07-21 | Saburo Kano | 高温の乾燥空気又は高温湿り空気を任意に発生する装置 |
US4899240A (en) * | 1988-07-28 | 1990-02-06 | Eastman Kodak Company | Biasing for a UMR head |
US4903158A (en) * | 1988-07-28 | 1990-02-20 | Eastman Kodak Company | MR head with complementary easy axis permanent magnet |
FR2665010B1 (fr) * | 1990-07-20 | 1992-09-18 | Thomson Csf | Dispositif magnetique de lecture a reseau matriciel de tetes de lecture. |
JPH0669472B2 (ja) * | 1991-01-25 | 1994-09-07 | 大阪瓦斯株式会社 | 浴室サウナシステム |
US5309295A (en) * | 1992-10-08 | 1994-05-03 | International Business Machines Corporation | Method and apparatus for biasing a magneto-resistive head |
US5327303A (en) * | 1992-12-18 | 1994-07-05 | Seagate Technology, Inc. | MR preamplifier having feedback loops for minimizing differential low frequency components and regulating common mode low frequency components of the preamplifier output signal |
JPH06274805A (ja) * | 1993-03-19 | 1994-09-30 | Hitachi Ltd | リード/ライト集積回路 |
JP3216943B2 (ja) * | 1993-09-13 | 2001-10-09 | 株式会社日立製作所 | 磁気記録再生装置 |
US5426542A (en) * | 1994-01-21 | 1995-06-20 | Seagate Technology, Inc. | Electronically coupled high-impedance magnetoresistive preamplifier |
US5914630A (en) * | 1996-05-10 | 1999-06-22 | Vtc Inc. | MR head preamplifier with output signal amplitude which is independent of head resistance |
US5917680A (en) * | 1996-06-24 | 1999-06-29 | Read-Rite Corporation | Magnetoresistive head with magnetic bias level control |
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 |
US6822817B2 (en) * | 2002-10-31 | 2004-11-23 | International Business Machines Corporation | Preamplifier circuit suitable for use in magnetic storage devices |
US7492166B2 (en) * | 2005-11-04 | 2009-02-17 | Devore Timothy Gale | Method for determining the source equivalent inductance of an energized AC circuit |
US9548721B1 (en) * | 2015-11-24 | 2017-01-17 | King Fahd University Of Petroleum And Minerals | Floating immittance emulator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3814863A (en) * | 1972-10-11 | 1974-06-04 | Ibm | Internally biased magnetoresistive magnetic transducer |
US3860965A (en) * | 1973-10-04 | 1975-01-14 | Ibm | Magnetoresistive read head assembly having matched elements for common mode rejection |
NL7405727A (nl) * | 1974-04-29 | 1975-10-31 | Philips Nv | Magnetoweerstandkop. |
CA1076252A (en) * | 1975-04-14 | 1980-04-22 | Frederik W. Gorter | Magnetoresistive head |
US4050086A (en) * | 1976-05-06 | 1977-09-20 | International Business Machines Corporation | Dynamic transducer biasing signal amplifying circuitry |
US4075671A (en) * | 1976-11-24 | 1978-02-21 | International Business Machines Corporation | Automatic ac biasing of a magnetoresistive element |
-
1978
- 1978-09-29 US US05/947,308 patent/US4191977A/en not_active Expired - Lifetime
-
1979
- 1979-06-01 DE DE7979101710T patent/DE2964345D1/de not_active Expired
- 1979-06-01 AT AT79101710T patent/ATE2102T1/de not_active IP Right Cessation
- 1979-06-01 EP EP79101710A patent/EP0009531B1/en not_active Expired
- 1979-07-10 ZA ZA793444A patent/ZA793444B/xx unknown
- 1979-07-20 CA CA332,289A patent/CA1127299A/en not_active Expired
- 1979-08-10 AU AU49804/79A patent/AU526085B2/en not_active Ceased
- 1979-08-14 JP JP54102847A patent/JPS594769B2/ja not_active Expired
- 1979-08-30 ES ES483738A patent/ES483738A1/es not_active Expired
- 1979-09-11 FI FI792821A patent/FI792821A/fi not_active Application Discontinuation
- 1979-09-11 NO NO792939A patent/NO792939L/no unknown
- 1979-09-28 DK DK409979A patent/DK409979A/da not_active Application Discontinuation
- 1979-09-28 SU SU792825149A patent/SU1075997A3/ru active
- 1979-10-01 BR BR7906297A patent/BR7906297A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
EP0009531B1 (en) | 1982-12-22 |
ZA793444B (en) | 1980-07-30 |
DE2964345D1 (en) | 1983-01-27 |
AU526085B2 (en) | 1982-12-16 |
CA1127299A (en) | 1982-07-06 |
AU4980479A (en) | 1980-04-03 |
NO792939L (no) | 1980-04-01 |
JPS594769B2 (ja) | 1984-01-31 |
ATE2102T1 (de) | 1983-01-15 |
DK409979A (da) | 1980-03-30 |
FI792821A (fi) | 1980-03-30 |
US4191977A (en) | 1980-03-04 |
ES483738A1 (es) | 1980-03-01 |
JPS5548825A (en) | 1980-04-08 |
EP0009531A1 (en) | 1980-04-16 |
SU1075997A3 (ru) | 1984-02-23 |
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