DE3767846D1 - Optisch integrierter lesekopf zum auslesen von auf einem magnetischen traeger aufgezeichneten informationen. - Google Patents
Optisch integrierter lesekopf zum auslesen von auf einem magnetischen traeger aufgezeichneten informationen.Info
- Publication number
- DE3767846D1 DE3767846D1 DE8787402567T DE3767846T DE3767846D1 DE 3767846 D1 DE3767846 D1 DE 3767846D1 DE 8787402567 T DE8787402567 T DE 8787402567T DE 3767846 T DE3767846 T DE 3767846T DE 3767846 D1 DE3767846 D1 DE 3767846D1
- Authority
- DE
- Germany
- Prior art keywords
- information recorded
- magnetic carrier
- reading
- optically integrated
- reading information
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10595—Control of operating function
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10541—Heads for reproducing
- G11B11/10543—Heads for reproducing using optical beam of radiation
- G11B11/10545—Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8616002A FR2606921B1 (fr) | 1986-11-18 | 1986-11-18 | Tete de lecture en optique integree pour la lecture d'informations enregistrees sur un support magnetique |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3767846D1 true DE3767846D1 (de) | 1991-03-07 |
Family
ID=9340914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787402567T Expired - Lifetime DE3767846D1 (de) | 1986-11-18 | 1987-11-13 | Optisch integrierter lesekopf zum auslesen von auf einem magnetischen traeger aufgezeichneten informationen. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4796226A (de) |
EP (1) | EP0270429B1 (de) |
JP (1) | JPH0711875B2 (de) |
DE (1) | DE3767846D1 (de) |
FR (1) | FR2606921B1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4991160A (en) * | 1988-05-31 | 1991-02-05 | Nikon Precision Inc. | Integrated optical device for magneto-optical recording and reading head |
US5115340A (en) * | 1988-09-30 | 1992-05-19 | Amoco Corporation | High average power Faraday isolator |
GB8916764D0 (en) * | 1989-07-21 | 1989-09-06 | Sambles John R | Surface plasmon optical sensor |
US5166989A (en) * | 1990-11-16 | 1992-11-24 | International Business Machines Corporation | Integrated polarization detection system |
DE4113046C2 (de) * | 1991-04-22 | 1994-02-10 | Zeiss Carl Jena Gmbh | Optoelektronisches Positionsmeßgerät |
FR2676303B1 (fr) * | 1991-05-07 | 1993-07-16 | Commissariat Energie Atomique | Tete magneto-optique integree de lecture et d'ecriture et procede de realisation. |
US5289454A (en) * | 1991-12-19 | 1994-02-22 | Minnesota Mining And Manufacturing Company | Optical disc addressing devices a method of use thereof |
FR2692683B1 (fr) * | 1992-06-22 | 1994-08-19 | Commissariat Energie Atomique | Dispositif en optique intégrée pour le contrôle de la focalisation et de la position d'une image. |
FR2705488B1 (fr) * | 1993-05-14 | 1995-06-23 | Commissariat Energie Atomique | Tête magnétique d'écriture pour enregistrement magnéto-optique. |
FR2719387B1 (fr) * | 1994-04-28 | 1996-05-24 | Commissariat Energie Atomique | Dispositif de contrôle de la position et/ou de la focalisation d'un faisceau lumineux focalisé. |
US5940549A (en) * | 1996-07-30 | 1999-08-17 | Seagate Technology, Incorporated | Optical system and method using optical fibers for storage and retrieval of information |
US6226233B1 (en) | 1996-07-30 | 2001-05-01 | Seagate Technology, Inc. | Magneto-optical system utilizing MSR media |
US6034938A (en) * | 1996-07-30 | 2000-03-07 | Seagate Technology, Inc. | Data storage system having an optical processing flying head |
US5850375A (en) * | 1996-07-30 | 1998-12-15 | Seagate Technology, Inc. | System and method using optical fibers in a data storage and retrieval system |
US6178150B1 (en) | 1996-07-30 | 2001-01-23 | Seagate Technology Inc. | Offset optics for use with optical heads |
US6850475B1 (en) | 1996-07-30 | 2005-02-01 | Seagate Technology, Llc | Single frequency laser source for optical data storage system |
US6058094A (en) * | 1996-07-30 | 2000-05-02 | Seagate Technology Inc. | Flying magneto-optical head with a steerable mirror |
US6081499A (en) * | 1997-05-05 | 2000-06-27 | Seagate Technology, Inc. | Magneto-optical data storage system having an optical-processing flying head |
US6775100B1 (en) | 1997-05-05 | 2004-08-10 | Seagate Technology Llc | Laser assisted track width definition and radial control with magnetic recording |
KR100508418B1 (ko) * | 1997-11-06 | 2005-11-24 | 후지제롯쿠스 가부시끼가이샤 | 광헤드및광디스크장치 |
US6574015B1 (en) | 1998-05-19 | 2003-06-03 | Seagate Technology Llc | Optical depolarizer |
DE19837713C2 (de) * | 1998-08-20 | 2003-04-10 | Ralf Boettcher | Verfahren und Vorrichtung zur Herstellung von Hologrammen |
US6762977B1 (en) * | 1999-09-13 | 2004-07-13 | Seagate Technology Llc | Laser assisted magnetic recording apparatus and method |
WO2002037622A2 (en) | 2000-11-06 | 2002-05-10 | Vitesse Semiconductor Corporation | Method of controlling the turn off characteristics of a vcsel diode |
US7349612B2 (en) * | 2003-01-28 | 2008-03-25 | Nippon Sheet Glass Company, Limited | Optical element, optical circuit provided with the optical element, and method for producing the optical element |
US7760979B2 (en) * | 2005-02-17 | 2010-07-20 | Avago Technologies General Ip (Singapore) Pte. Ltd. | System and method for low loss waveguide bends |
US8213271B2 (en) | 2008-12-31 | 2012-07-03 | Hitachi Global Storage Technologies Netherlands B.V. | System, method and apparatus for internal polarization rotation for horizontal cavity, surface emitting laser beam for thermally assisted recording in disk drive |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3576547A (en) * | 1968-11-22 | 1971-04-27 | Itek Corp | Interferometric readout of electric fields |
US3859643A (en) * | 1973-11-14 | 1975-01-07 | Corning Glass Works | Optical sensing of cylindrical magnetic domains |
US4220395A (en) * | 1974-05-13 | 1980-09-02 | Regents Of University Of California | Polarization converter and circuit elements for use in optical waveguides |
US3996576A (en) * | 1975-03-17 | 1976-12-07 | Texas Instruments Incorporated | Optical waveguide magnetic bubble detection |
US3990037A (en) * | 1975-03-20 | 1976-11-02 | Texas Instruments Incorporated | Parallel access bubble memory |
US3990059A (en) * | 1975-04-03 | 1976-11-02 | Texas Instruments Incorporated | Magnetic bubble detector |
FR2355229A1 (fr) * | 1976-06-14 | 1978-01-13 | Elf Aquitaine | Procede et equipement pour la mise en place de conduites sur le sol sous-marin |
FR2355299A1 (fr) * | 1976-06-18 | 1978-01-13 | Thomson Csf | Appareil destine a mesurer un champ magnetique |
DE3110572A1 (de) * | 1981-03-18 | 1982-09-30 | Agfa-Gevaert Ag, 5090 Leverkusen | Magneto-optisches speicherverfahren |
JPS5823337A (ja) * | 1981-07-31 | 1983-02-12 | Canon Inc | 記録情報再生装置 |
JPS61139959A (ja) * | 1984-12-12 | 1986-06-27 | Canon Inc | 磁気記録の再生方法 |
-
1986
- 1986-11-18 FR FR8616002A patent/FR2606921B1/fr not_active Expired
-
1987
- 1987-11-13 EP EP87402567A patent/EP0270429B1/de not_active Expired - Lifetime
- 1987-11-13 DE DE8787402567T patent/DE3767846D1/de not_active Expired - Lifetime
- 1987-11-16 JP JP62287593A patent/JPH0711875B2/ja not_active Expired - Lifetime
- 1987-11-19 US US07/122,400 patent/US4796226A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2606921A1 (fr) | 1988-05-20 |
EP0270429B1 (de) | 1991-01-30 |
US4796226A (en) | 1989-01-03 |
JPH0711875B2 (ja) | 1995-02-08 |
FR2606921B1 (fr) | 1989-01-13 |
JPS63153753A (ja) | 1988-06-27 |
EP0270429A1 (de) | 1988-06-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Representative=s name: GROSSE, BOCKHORNI, SCHUMACHER, 81476 MUENCHEN |
|
8339 | Ceased/non-payment of the annual fee |