DE69123004D1 - Magnetooptisches Aufzeichnungssystem - Google Patents
Magnetooptisches AufzeichnungssystemInfo
- Publication number
- DE69123004D1 DE69123004D1 DE69123004T DE69123004T DE69123004D1 DE 69123004 D1 DE69123004 D1 DE 69123004D1 DE 69123004 T DE69123004 T DE 69123004T DE 69123004 T DE69123004 T DE 69123004T DE 69123004 D1 DE69123004 D1 DE 69123004D1
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- optical recording
- recording system
- optical
- recording
- 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
- G11B11/10502—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 characterised by the transducing operation to be executed
- G11B11/10504—Recording
- G11B11/10508—Recording by modulating only the magnetic field at the transducer
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2210919A JP2733127B2 (ja) | 1990-08-07 | 1990-08-07 | 光磁気記録装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69123004D1 true DE69123004D1 (de) | 1996-12-12 |
DE69123004T2 DE69123004T2 (de) | 1997-03-27 |
Family
ID=16597242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69123004T Expired - Lifetime DE69123004T2 (de) | 1990-08-07 | 1991-08-07 | Magnetooptisches Aufzeichnungssystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US5475658A (de) |
EP (1) | EP0470826B1 (de) |
JP (1) | JP2733127B2 (de) |
CA (1) | CA2048499C (de) |
DE (1) | DE69123004T2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2617025B2 (ja) * | 1990-08-11 | 1997-06-04 | シャープ株式会社 | 磁気記録媒体とその記録再生方法 |
US20020019938A1 (en) * | 2000-08-04 | 2002-02-14 | Aarons Michael Thomas | Method and apparatus for secure identification for networked environments |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60236137A (ja) * | 1984-05-08 | 1985-11-22 | Nippon Kogaku Kk <Nikon> | 同時消録型光磁気記録方式並びにそれに使用する記録装置及び記録媒体 |
EP0196590B1 (de) * | 1985-03-27 | 1992-05-20 | Sony Corporation | Signalaufnahme- und -wiedergabegerät für eine optomagnetische Platte |
JPS62134838A (ja) * | 1985-12-05 | 1987-06-17 | Matsushita Electric Ind Co Ltd | 光磁気デイスク情報記録再生装置 |
JPH0721897B2 (ja) * | 1986-04-24 | 1995-03-08 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | 光磁気データ記録装置 |
JP2575120B2 (ja) * | 1986-07-31 | 1997-01-22 | ソニー株式会社 | 光磁気記録装置 |
US4982389A (en) * | 1987-01-30 | 1991-01-01 | Hitachi, Ltd. | Magneto-optical recorder with compensation for variation in applied magnetic field intensity on a recording medium |
JPS63187439A (ja) * | 1987-01-30 | 1988-08-03 | Hitachi Ltd | 光磁気記録方式 |
AU600576B2 (en) * | 1987-04-24 | 1990-08-16 | Sony Corporation | Thermomagnetic recording method applying power modulated laser on a magnetically coupled multi-layer structure of perpendicular anisotropy magnetic film |
EP0312143B1 (de) * | 1987-10-14 | 1993-08-18 | Koninklijke Philips Electronics N.V. | Magnetooptische Aufzeichnungsvorrichtung und Betätigungsschaltung zur Anwendung in derartigen, magnetooptischen Aufzeichnungsvorrichtungen |
NL8703011A (nl) * | 1987-12-14 | 1989-07-03 | Philips Nv | Werkwijze voor het optekenen van informatie op een registratiedrager van het thermo-magnetische type, alsmede een inrichting voor het uitvoeren van de werkwijze. |
JP2637191B2 (ja) * | 1988-10-20 | 1997-08-06 | 株式会社リコー | 光磁気記録再生装置の光磁気記録方法 |
JP2853808B2 (ja) * | 1989-04-13 | 1999-02-03 | シャープ株式会社 | 磁気光学記憶素子 |
US5172364A (en) * | 1989-08-01 | 1992-12-15 | Mitsubishi Denki Kabushiki Kaisha | Magneto-optic recording apparatus with controlled magnetic field generation |
JPH03127347A (ja) * | 1989-10-13 | 1991-05-30 | Internatl Business Mach Corp <Ibm> | 光磁気記録方法及び装置 |
JPH07118106B2 (ja) * | 1990-03-08 | 1995-12-18 | パイオニア株式会社 | 光磁気記録再生装置 |
JPH0690976B2 (ja) * | 1990-10-05 | 1994-11-14 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 光磁気記録媒体 |
JP2910250B2 (ja) * | 1990-12-27 | 1999-06-23 | ソニー株式会社 | 光磁気記録媒体 |
-
1990
- 1990-08-07 JP JP2210919A patent/JP2733127B2/ja not_active Expired - Lifetime
-
1991
- 1991-08-06 CA CA002048499A patent/CA2048499C/en not_active Expired - Lifetime
- 1991-08-07 DE DE69123004T patent/DE69123004T2/de not_active Expired - Lifetime
- 1991-08-07 EP EP91307253A patent/EP0470826B1/de not_active Expired - Lifetime
-
1994
- 1994-10-07 US US08/320,135 patent/US5475658A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0470826B1 (de) | 1996-11-06 |
EP0470826A1 (de) | 1992-02-12 |
JPH0492237A (ja) | 1992-03-25 |
CA2048499A1 (en) | 1992-02-08 |
DE69123004T2 (de) | 1997-03-27 |
JP2733127B2 (ja) | 1998-03-30 |
US5475658A (en) | 1995-12-12 |
CA2048499C (en) | 1999-11-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8328 | Change in the person/name/address of the agent |
Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN |
|
8364 | No opposition during term of opposition |