DE69225154T2 - Magneto-optische Aufzeichnung - Google Patents
Magneto-optische AufzeichnungInfo
- Publication number
- DE69225154T2 DE69225154T2 DE69225154T DE69225154T DE69225154T2 DE 69225154 T2 DE69225154 T2 DE 69225154T2 DE 69225154 T DE69225154 T DE 69225154T DE 69225154 T DE69225154 T DE 69225154T DE 69225154 T2 DE69225154 T2 DE 69225154T2
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- optical recording
- recording
- 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
- G11B11/03—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 deforming with non-mechanical means, e.g. laser, beam of particles
-
- 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
- G11B11/10506—Recording by modulating only the light beam of the transducer
-
- 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
- G11B11/10517—Overwriting or erasing
- G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
- G11B11/10521—Direct overwriting, i.e. performing erasing and recording using the same transducing means using a single light spot
-
- 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
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3021472A JP2567996B2 (ja) | 1991-01-23 | 1991-01-23 | 光磁気記録方法及び装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69225154D1 DE69225154D1 (de) | 1998-05-28 |
DE69225154T2 true DE69225154T2 (de) | 1998-11-19 |
Family
ID=12055920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69225154T Expired - Fee Related DE69225154T2 (de) | 1991-01-23 | 1992-01-20 | Magneto-optische Aufzeichnung |
Country Status (11)
Country | Link |
---|---|
US (2) | US5224080A (de) |
EP (1) | EP0496556B1 (de) |
JP (1) | JP2567996B2 (de) |
KR (1) | KR950010421B1 (de) |
CN (1) | CN1023264C (de) |
AR (1) | AR244457A1 (de) |
BR (1) | BR9200185A (de) |
CA (1) | CA2059179C (de) |
DE (1) | DE69225154T2 (de) |
MY (2) | MY119488A (de) |
TW (1) | TW198758B (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2567996B2 (ja) * | 1991-01-23 | 1996-12-25 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 光磁気記録方法及び装置 |
JPH04355239A (ja) * | 1991-05-31 | 1992-12-09 | Ricoh Co Ltd | 光磁気記録方法及び光磁気記録媒体 |
JP3159742B2 (ja) * | 1991-10-07 | 2001-04-23 | キヤノン株式会社 | 光磁気記録再生方法 |
JPH06131722A (ja) * | 1992-10-16 | 1994-05-13 | Canon Inc | 光磁気記録媒体およびその記録方法 |
US6665235B2 (en) | 1992-11-06 | 2003-12-16 | Sharp Kabushiki Kaisha | Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium |
EP0596716B1 (de) * | 1992-11-06 | 2002-05-15 | Sharp Kabushiki Kaisha | Magnetooptischer Aufzeichungsträger, Aufzeichnungs- und Wiedergabemethode sowie für diesen magnetooptischen Aufzeichnungsträger entworfener optischer Abtastkopf |
JP3056902B2 (ja) * | 1992-11-30 | 2000-06-26 | キヤノン株式会社 | 光磁気記録媒体 |
JP3092363B2 (ja) | 1992-12-01 | 2000-09-25 | 松下電器産業株式会社 | 光磁気記録媒体 |
JPH06236589A (ja) * | 1993-02-10 | 1994-08-23 | Canon Inc | 光磁気記録方法および光磁気再生方法及び光磁気記録媒体 |
JPH07311986A (ja) * | 1994-05-18 | 1995-11-28 | Matsushita Electric Ind Co Ltd | 光磁気記録媒体 |
US5414678A (en) * | 1994-09-02 | 1995-05-09 | Minnesota Mining And Manufacturing Company | Magneto-optic recording medium having two recording layers, and drive for same |
KR970010705A (ko) * | 1995-08-28 | 1997-03-27 | 안승찬 | 바이오 세라믹을 이용한 판넬 |
EP1286346A4 (de) * | 2000-04-19 | 2007-04-18 | Sanyo Electric Co | Magnetooptische platteneinrichtung mit der fähigkeit, durch ein gleichstrom-magnetfeld eine magnetbereichserweiterungswiedergabe durchzuführen, und wiedergabeverfahren |
CN100364097C (zh) * | 2003-03-31 | 2008-01-23 | 松下电器产业株式会社 | 存储单元、使用该存储单元的存储器、存储单元制造方法和存储器记录/读取方法 |
KR101006669B1 (ko) | 2003-03-31 | 2011-01-10 | 파나소닉 주식회사 | 메모리 셀과 이것을 이용한 메모리 및 메모리 셀의제조방법 및 메모리의 기록/독출 방법 |
US7736765B2 (en) * | 2004-12-28 | 2010-06-15 | Seagate Technology Llc | Granular perpendicular magnetic recording media with dual recording layer and method of fabricating same |
US8110298B1 (en) | 2005-03-04 | 2012-02-07 | Seagate Technology Llc | Media for high density perpendicular magnetic recording |
US8119263B2 (en) * | 2005-09-22 | 2012-02-21 | Seagate Technology Llc | Tuning exchange coupling in magnetic recording media |
US8697260B2 (en) * | 2008-07-25 | 2014-04-15 | Seagate Technology Llc | Method and manufacture process for exchange decoupled first magnetic layer |
US7867637B2 (en) * | 2008-11-17 | 2011-01-11 | Seagate Technology Llc | Low coupling oxide media (LCOM) |
US9142240B2 (en) | 2010-07-30 | 2015-09-22 | Seagate Technology Llc | Apparatus including a perpendicular magnetic recording layer having a convex magnetic anisotropy profile |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2521908B2 (ja) * | 1985-06-11 | 1996-08-07 | 株式会社ニコン | オ―バ―ライト可能な光磁気記録方法、それに使用される光磁気記録装置及び光磁気記録媒体、並びに変調方法、変調装置及び光磁気記録媒体 |
CA1322408C (en) * | 1986-08-20 | 1993-09-21 | Tomiji Tanaka | Thermomagnetic recording method applying power modulated laser on a magnetically coupled double layer structure of perpendicular anisotropy film |
JP2642639B2 (ja) * | 1987-09-14 | 1997-08-20 | オリンパス光学工業株式会社 | 光磁気記録方法 |
JP2712301B2 (ja) * | 1988-06-07 | 1998-02-10 | 株式会社ニコン | オーバーライト可能な光磁気記録媒体 |
JP2712312B2 (ja) * | 1988-06-24 | 1998-02-10 | 株式会社ニコン | オーバーライト可能な光磁気記録媒体 |
JPH0227548A (ja) * | 1988-07-15 | 1990-01-30 | Nikon Corp | 小型化されたow型光磁気記録装置 |
WO1990002400A1 (en) * | 1988-08-24 | 1990-03-08 | Mitsubishi Denki Kabushiki Kaisha | Magnetooptical recording medium and method of producing the same |
JPH03113760A (ja) * | 1989-09-22 | 1991-05-15 | Nikon Corp | 光磁気ピットポジション記録方法及びそれに使用される記録装置 |
US5235569A (en) * | 1990-06-13 | 1993-08-10 | Nikon Corporation | Magnetooptical recording method, and apparatus used in the method |
JP2567996B2 (ja) * | 1991-01-23 | 1996-12-25 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 光磁気記録方法及び装置 |
-
1991
- 1991-01-23 JP JP3021472A patent/JP2567996B2/ja not_active Expired - Fee Related
- 1991-09-30 TW TW080107705A patent/TW198758B/zh active
- 1991-10-24 AR AR91321504A patent/AR244457A1/es active
- 1991-12-20 CN CN91111738A patent/CN1023264C/zh not_active Expired - Fee Related
- 1991-12-20 MY MYPI95002367A patent/MY119488A/en unknown
- 1991-12-20 MY MYPI91002378A patent/MY110296A/en unknown
- 1991-12-20 KR KR1019910023600A patent/KR950010421B1/ko not_active IP Right Cessation
-
1992
- 1992-01-10 CA CA002059179A patent/CA2059179C/en not_active Expired - Fee Related
- 1992-01-20 EP EP92300460A patent/EP0496556B1/de not_active Expired - Lifetime
- 1992-01-20 DE DE69225154T patent/DE69225154T2/de not_active Expired - Fee Related
- 1992-01-22 BR BR929200185A patent/BR9200185A/pt unknown
- 1992-02-18 US US07/821,520 patent/US5224080A/en not_active Expired - Fee Related
- 1992-11-03 US US07/970,895 patent/US5325343A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
MY110296A (en) | 1998-04-30 |
KR950010421B1 (ko) | 1995-09-16 |
JP2567996B2 (ja) | 1996-12-25 |
EP0496556A2 (de) | 1992-07-29 |
CN1063573A (zh) | 1992-08-12 |
KR920015293A (ko) | 1992-08-26 |
EP0496556A3 (en) | 1992-11-25 |
US5325343A (en) | 1994-06-28 |
TW198758B (de) | 1993-01-21 |
DE69225154D1 (de) | 1998-05-28 |
AR244457A1 (es) | 1993-10-29 |
US5224080A (en) | 1993-06-29 |
BR9200185A (pt) | 1992-10-06 |
CN1023264C (zh) | 1993-12-22 |
JPH04238132A (ja) | 1992-08-26 |
MY119488A (en) | 2005-06-30 |
EP0496556B1 (de) | 1998-04-22 |
CA2059179C (en) | 1996-09-17 |
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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 |