DE3370555D1 - Magnetoresistive sensor for vertically recorded data and method of sensing such data - Google Patents
Magnetoresistive sensor for vertically recorded data and method of sensing such dataInfo
- Publication number
- DE3370555D1 DE3370555D1 DE8383106324T DE3370555T DE3370555D1 DE 3370555 D1 DE3370555 D1 DE 3370555D1 DE 8383106324 T DE8383106324 T DE 8383106324T DE 3370555 T DE3370555 T DE 3370555T DE 3370555 D1 DE3370555 D1 DE 3370555D1
- Authority
- DE
- Germany
- Prior art keywords
- data
- sensing
- magnetoresistive sensor
- vertically recorded
- recorded data
- 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.)
- Expired
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
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Measuring Magnetic Variables (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/412,656 US4589041A (en) | 1982-08-30 | 1982-08-30 | Differential magnetoresistive sensor for vertical recording |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3370555D1 true DE3370555D1 (en) | 1987-04-30 |
Family
ID=23633869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383106324T Expired DE3370555D1 (en) | 1982-08-30 | 1983-06-29 | Magnetoresistive sensor for vertically recorded data and method of sensing such data |
Country Status (5)
Country | Link |
---|---|
US (1) | US4589041A (de) |
EP (1) | EP0101825B1 (de) |
JP (1) | JPS5940316A (de) |
CA (1) | CA1191606A (de) |
DE (1) | DE3370555D1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62205511A (ja) * | 1986-03-05 | 1987-09-10 | Fuji Photo Film Co Ltd | 磁気ヘツド特性測定装置 |
US4860138A (en) * | 1987-11-12 | 1989-08-22 | International Business Machines Corp. | Differentially sensitive single track read/write head design with improved biasing |
US4878140A (en) * | 1988-06-21 | 1989-10-31 | Hewlett-Packard Company | Magneto-resistive sensor with opposing currents for reading perpendicularly recorded media |
JPH02101831A (ja) * | 1988-10-11 | 1990-04-13 | Kokusai Electric Co Ltd | 光送信機 |
US6600631B1 (en) * | 1989-11-27 | 2003-07-29 | Censtor Corp. | Transducer/flexure/conductor structure for electromagnetic read/write system |
US20020176210A1 (en) * | 1989-11-27 | 2002-11-28 | Hamilton Harold J. | Durable, low-vibration, dynamic-contact hard disk drive system |
US5084794A (en) * | 1990-03-29 | 1992-01-28 | Eastman Kodak Company | Shorted dual element magnetoresistive reproduce head exhibiting high density signal amplification |
US5323285A (en) * | 1992-06-23 | 1994-06-21 | Eastman Kodak Company | Shielded dual element magnetoresistive reproduce head exhibiting high density signal amplification |
US5479308A (en) * | 1993-11-15 | 1995-12-26 | Voegeli; Otto | Magnetoresistive transducer including interdiffusion layer |
US5750270A (en) * | 1995-02-07 | 1998-05-12 | Conner Peripherals, Inc. | Multi-layer magnetic recording media |
DE69616676T2 (de) * | 1995-07-18 | 2002-05-16 | Hewlett Packard Co | Magnetoresistiver Aufnahmekopf |
US5678087A (en) * | 1995-12-21 | 1997-10-14 | Eastman Kodak Company | Camera having an upstream read only magnetic sensor to detect exposed image areas on magnetically coated film |
WO1999059145A1 (en) * | 1998-05-13 | 1999-11-18 | Storage Technology Corporation | Method for reading both high and low density signals with an mr head |
US7016160B2 (en) | 2003-11-18 | 2006-03-21 | Seagate Technology Llc | Differential CPP reader for perpendicular magnetic recording |
US7477490B2 (en) * | 2004-06-30 | 2009-01-13 | Seagate Technology Llc | Single sensor element that is naturally differentiated |
US7643255B2 (en) * | 2006-03-17 | 2010-01-05 | Hitachi Global Storage Technologies Netherlands B.V. | Anti-parallel magnetization layers in the free layers and magnetization layers of a differential sensor read head |
CN112038486A (zh) * | 2020-08-04 | 2020-12-04 | 北京大学 | 一种实现器件在平行于衬底表面的外磁场下具有m型磁阻曲线的方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS498089B1 (de) * | 1969-09-04 | 1974-02-23 | ||
US3691540A (en) * | 1970-10-06 | 1972-09-12 | Ibm | Integrated magneto-resistive sensing of bubble domains |
US3736419A (en) * | 1971-10-26 | 1973-05-29 | Ibm | Magnetoresistive sensing of bubble domains with noise suppression |
FR2219482B1 (de) * | 1973-02-27 | 1978-03-03 | Cii | |
US3860965A (en) * | 1973-10-04 | 1975-01-14 | Ibm | Magnetoresistive read head assembly having matched elements for common mode rejection |
FR2248566B1 (de) * | 1973-10-23 | 1976-11-19 | Cii | |
US4012777A (en) * | 1974-02-28 | 1977-03-15 | U.S. Philips Corporation | Record carrier and device for playing back same |
US3936883A (en) * | 1974-12-27 | 1976-02-03 | Ampex Corporation | Magnetic bubble read/write head |
US3975772A (en) * | 1975-06-02 | 1976-08-17 | International Business Machines Corporation | Double shielded magnetorestive sensing element |
US4012781A (en) * | 1975-08-14 | 1977-03-15 | International Business Machines Corporation | Magnetoresistive read head assembly for servo operation |
US4050086A (en) * | 1976-05-06 | 1977-09-20 | International Business Machines Corporation | Dynamic transducer biasing signal amplifying circuitry |
JPS52137371A (en) * | 1976-05-13 | 1977-11-16 | Fujitsu Ltd | Position control system |
JPS55432A (en) * | 1978-06-19 | 1980-01-05 | Hitachi Ltd | Magnetism detector |
FR2493015A1 (fr) * | 1980-10-29 | 1982-04-30 | Cii Honeywell Bull | Transducteur magnetoresistant |
FR2494952B1 (fr) * | 1980-11-27 | 1986-06-06 | Bull Sa | Transducteur magnetoresistant de lecture d'un support d'enregistrement a haute densite d'informations |
-
1982
- 1982-08-30 US US06/412,656 patent/US4589041A/en not_active Expired - Lifetime
-
1983
- 1983-05-31 JP JP58095131A patent/JPS5940316A/ja active Granted
- 1983-06-17 CA CA000430699A patent/CA1191606A/en not_active Expired
- 1983-06-29 EP EP83106324A patent/EP0101825B1/de not_active Expired
- 1983-06-29 DE DE8383106324T patent/DE3370555D1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4589041A (en) | 1986-05-13 |
EP0101825A1 (de) | 1984-03-07 |
JPS5940316A (ja) | 1984-03-06 |
JPS6329327B2 (de) | 1988-06-13 |
CA1191606A (en) | 1985-08-06 |
EP0101825B1 (de) | 1987-03-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |