CA2048499A1 - Dispositif d'enregistrement magneto-optique - Google Patents
Dispositif d'enregistrement magneto-optiqueInfo
- Publication number
- CA2048499A1 CA2048499A1 CA2048499A CA2048499A CA2048499A1 CA 2048499 A1 CA2048499 A1 CA 2048499A1 CA 2048499 A CA2048499 A CA 2048499A CA 2048499 A CA2048499 A CA 2048499A CA 2048499 A1 CA2048499 A1 CA 2048499A1
- Authority
- CA
- Canada
- Prior art keywords
- magneto
- magnetic field
- optical recording
- external magnetic
- recording device
- 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.)
- Granted
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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2-210919 | 1990-08-07 | ||
JP2210919A JP2733127B2 (ja) | 1990-08-07 | 1990-08-07 | 光磁気記録装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2048499A1 true CA2048499A1 (fr) | 1992-02-08 |
CA2048499C CA2048499C (fr) | 1999-11-09 |
Family
ID=16597242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002048499A Expired - Lifetime CA2048499C (fr) | 1990-08-07 | 1991-08-06 | Dispositif d'enregistrement magneto-optique |
Country Status (5)
Country | Link |
---|---|
US (1) | US5475658A (fr) |
EP (1) | EP0470826B1 (fr) |
JP (1) | JP2733127B2 (fr) |
CA (1) | CA2048499C (fr) |
DE (1) | DE69123004T2 (fr) |
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 (fr) * | 1985-03-27 | 1992-05-20 | Sony Corporation | Appareil d'enregistrement et de reproduction de signal pour un disque optomagnétique |
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 |
JPS63187439A (ja) * | 1987-01-30 | 1988-08-03 | Hitachi Ltd | 光磁気記録方式 |
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 |
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 |
DE3883342T2 (de) * | 1987-10-14 | 1994-03-10 | Philips Nv | 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/fr not_active Expired - Lifetime
- 1991-08-07 EP EP91307253A patent/EP0470826B1/fr not_active Expired - Lifetime
- 1991-08-07 DE DE69123004T patent/DE69123004T2/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 |
---|---|
DE69123004D1 (de) | 1996-12-12 |
EP0470826A1 (fr) | 1992-02-12 |
DE69123004T2 (de) | 1997-03-27 |
US5475658A (en) | 1995-12-12 |
JP2733127B2 (ja) | 1998-03-30 |
EP0470826B1 (fr) | 1996-11-06 |
JPH0492237A (ja) | 1992-03-25 |
CA2048499C (fr) | 1999-11-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |