DE69128058T2 - Magnetooptisches Verfahren und Gerät zur Datenaufzeichnung/-wiedergabe - Google Patents
Magnetooptisches Verfahren und Gerät zur Datenaufzeichnung/-wiedergabeInfo
- Publication number
- DE69128058T2 DE69128058T2 DE69128058T DE69128058T DE69128058T2 DE 69128058 T2 DE69128058 T2 DE 69128058T2 DE 69128058 T DE69128058 T DE 69128058T DE 69128058 T DE69128058 T DE 69128058T DE 69128058 T2 DE69128058 T2 DE 69128058T2
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- playback
- data recording
- optical method
- optical
- 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 - Fee Related
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
-
- 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
- G11B11/10528—Shaping of magnetic domains, e.g. form, dimensions
-
- 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
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21650290 | 1990-08-17 | ||
JP21650190 | 1990-08-17 | ||
JP21650390 | 1990-08-17 | ||
JP27672890A JPH04153934A (ja) | 1990-10-16 | 1990-10-16 | 光磁気記録再生方法および光磁気記録再生装置 |
JP18775591A JPH056592A (ja) | 1990-08-17 | 1991-07-26 | 光磁気記録/再生方法および装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69128058D1 DE69128058D1 (de) | 1997-12-04 |
DE69128058T2 true DE69128058T2 (de) | 1998-04-09 |
Family
ID=27528951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69128058T Expired - Fee Related DE69128058T2 (de) | 1990-08-17 | 1991-08-16 | Magnetooptisches Verfahren und Gerät zur Datenaufzeichnung/-wiedergabe |
Country Status (4)
Country | Link |
---|---|
US (1) | US5325345A (de) |
EP (1) | EP0472377B1 (de) |
KR (1) | KR920005087A (de) |
DE (1) | DE69128058T2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2128964C (en) * | 1993-07-29 | 1998-11-10 | Yoichi Osato | Magnetooptical recording medium and recording/reproduction method for medium |
JP2664330B2 (ja) * | 1993-09-02 | 1997-10-15 | 富士通株式会社 | 光磁気記録媒体 |
JP3414823B2 (ja) * | 1994-03-15 | 2003-06-09 | 富士通株式会社 | 光磁気記録媒体 |
JP3332750B2 (ja) * | 1996-09-19 | 2002-10-07 | キヤノン株式会社 | 磁気記録媒体、記録方法、再生方法、及び、磁性記録媒体の製造方法 |
DE19756458A1 (de) * | 1997-12-18 | 1999-06-24 | Thomson Brandt Gmbh | Magneto-optisches Aufzeichnungs- oder Wiedergabegerät |
US6602301B1 (en) * | 1999-04-26 | 2003-08-05 | Fuji Photo Film Co., Ltd. | Method and apparatus for magnetic transfer |
JP2004165451A (ja) * | 2002-11-13 | 2004-06-10 | Sony Corp | 磁気記憶素子及び磁気記憶素子の記録方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3278703D1 (en) * | 1981-03-26 | 1988-07-28 | Sony Corp | Thermomagnetic recording methods |
CA1212757A (en) * | 1982-09-25 | 1986-10-14 | Tsutomu Okamoto | Thermomagnetic recording method |
US4882718A (en) * | 1986-03-07 | 1989-11-21 | Movid Information Technology, Inc. | Single-head, direct overwrite magneto-optic system and method |
JPS63239638A (ja) * | 1987-03-26 | 1988-10-05 | Canon Inc | 光磁気記録装置 |
JP2754537B2 (ja) * | 1987-05-18 | 1998-05-20 | 株式会社ニコン | 光磁気記録媒体並びにそれを使用したビット形成方法 |
JPH0786984B2 (ja) * | 1987-12-08 | 1995-09-20 | キヤノン株式会社 | 光磁気記録装置 |
JPH0242664A (ja) * | 1988-08-01 | 1990-02-13 | Matsushita Electric Ind Co Ltd | 光熱磁気記録媒体並びにその記録装置及びこれらを用いた光熱磁気記録方式 |
JPH0386954A (ja) * | 1989-08-30 | 1991-04-11 | Mitsubishi Electric Corp | 光磁気記録装置 |
JP3185932B2 (ja) * | 1990-06-21 | 2001-07-11 | セイコーエプソン株式会社 | 光磁気記録再生方法ならびに光磁気記録再生装置 |
-
1991
- 1991-08-13 KR KR1019910013937A patent/KR920005087A/ko not_active Application Discontinuation
- 1991-08-16 DE DE69128058T patent/DE69128058T2/de not_active Expired - Fee Related
- 1991-08-16 EP EP91307583A patent/EP0472377B1/de not_active Expired - Lifetime
-
1993
- 1993-04-29 US US08/055,795 patent/US5325345A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR920005087A (ko) | 1992-03-28 |
EP0472377A3 (en) | 1992-08-19 |
EP0472377B1 (de) | 1997-10-29 |
EP0472377A2 (de) | 1992-02-26 |
DE69128058D1 (de) | 1997-12-04 |
US5325345A (en) | 1994-06-28 |
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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 |