DE69026734T2 - Verfahren und Anordnung zum Schreiben und Lesen eines magnetooptischen Aufzeichnungsträgers, und magnetooptischer Aufzeichnungsträger zur Verwendung mit der Anordnung - Google Patents
Verfahren und Anordnung zum Schreiben und Lesen eines magnetooptischen Aufzeichnungsträgers, und magnetooptischer Aufzeichnungsträger zur Verwendung mit der AnordnungInfo
- Publication number
- DE69026734T2 DE69026734T2 DE69026734T DE69026734T DE69026734T2 DE 69026734 T2 DE69026734 T2 DE 69026734T2 DE 69026734 T DE69026734 T DE 69026734T DE 69026734 T DE69026734 T DE 69026734T DE 69026734 T2 DE69026734 T2 DE 69026734T2
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- arrangement
- recording medium
- optical recording
- writing
- 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
- 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
-
- 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
-
- 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
- G11B11/10515—Reproducing
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8900362A NL8900362A (nl) | 1989-02-15 | 1989-02-15 | Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69026734D1 DE69026734D1 (de) | 1996-06-05 |
DE69026734T2 true DE69026734T2 (de) | 1996-11-07 |
Family
ID=19854133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69026734T Expired - Fee Related DE69026734T2 (de) | 1989-02-15 | 1990-02-09 | Verfahren und Anordnung zum Schreiben und Lesen eines magnetooptischen Aufzeichnungsträgers, und magnetooptischer Aufzeichnungsträger zur Verwendung mit der Anordnung |
Country Status (9)
Country | Link |
---|---|
US (2) | US5442597A (de) |
EP (1) | EP0383386B1 (de) |
JP (1) | JP3201759B2 (de) |
KR (1) | KR0152530B1 (de) |
CN (1) | CN1022651C (de) |
AT (1) | ATE137600T1 (de) |
DE (1) | DE69026734T2 (de) |
NL (1) | NL8900362A (de) |
SG (1) | SG44721A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8900362A (nl) * | 1989-02-15 | 1990-09-03 | Philips Nv | Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager. |
DE69029048T2 (de) * | 1989-04-19 | 1997-03-20 | Hitachi Ltd | Magnetooptische Aufzeichnungs- und Wiedergabeverfahren, magnetooptische Speichervorrichtung |
JP2636957B2 (ja) * | 1990-08-10 | 1997-08-06 | シャープ株式会社 | 磁気記録再生装置 |
JP2838908B2 (ja) * | 1990-10-19 | 1998-12-16 | キヤノン株式会社 | 光磁気記録方法 |
JP2738785B2 (ja) * | 1991-06-27 | 1998-04-08 | 三菱電機株式会社 | 光磁気記録再生装置 |
CA2060547C (en) * | 1991-02-08 | 2002-04-23 | Masumi Ohta | System and method of reproducing signals recorded on a magneto-optic recording medium |
EP0565751A1 (de) * | 1992-04-14 | 1993-10-20 | Pioneer Electronic Corporation | Optisches Aufzeichnungsverfahren und Gerät dafür |
EP0618572B1 (de) * | 1993-04-02 | 2002-07-03 | Canon Kabushiki Kaisha | Magneto-optisches Aufzeichnungsmedium auf dem es moglich ist, Informationen hoher Zeichendichte aufzuzeichnen und Verfahren zur Wiedergabe der aufgezeichneten Informationen |
JPH09500459A (ja) * | 1994-05-02 | 1997-01-14 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | 反射防止回折格子を有する光透過性光学素子 |
US5530688A (en) * | 1994-10-31 | 1996-06-25 | International Business Machines Corporation | Optical disk recording device using two modulated laser beams for recording information data |
JP3422869B2 (ja) * | 1995-01-27 | 2003-06-30 | 新日本石油株式会社 | Hcfc冷媒及びhfc冷媒に共用可能な冷凍機油組成物 |
CN1037781C (zh) * | 1995-06-22 | 1998-03-18 | 中国石油化工总公司 | 一种抗磨添加剂及其制备方法 |
US5923625A (en) | 1995-07-13 | 1999-07-13 | Hitachi Maxell, Ltd. | Magneto-optical recording medium and method for recording and reproduction thereon |
CN1037520C (zh) * | 1996-04-23 | 1998-02-25 | 北京石油化工学院设计所 | 一种润滑油的添加剂 |
CN1058517C (zh) * | 1997-06-23 | 2000-11-15 | 中国石化兰州炼油化工总厂 | 通用齿轮油复合剂的组合物 |
JP2000099980A (ja) * | 1998-09-17 | 2000-04-07 | Toshiba Corp | 光ディスク記録再生装置に使用される光学装置 |
DE60328270D1 (de) * | 2002-03-29 | 2009-08-20 | Koninkl Philips Electronics Nv | Aufzeichnungsverfahren eines optischen aufzeichnungsmediums |
EP1565908A1 (de) * | 2002-11-27 | 2005-08-24 | Nokia Corporation | Lese-/schreibeinrichtung für optischen speicher und verfahren dafür |
TWI427631B (zh) * | 2006-10-10 | 2014-02-21 | Thomson Licensing | 記錄層具有凹溝結構之光學記錄媒體,在其上記錄用之光學拾波器及記錄裝置和方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3869193A (en) * | 1973-09-18 | 1975-03-04 | Honeywell Inc | Optical memory with improved signal-to-noise ratio |
US4176377A (en) * | 1977-11-10 | 1979-11-27 | Eastman Kodak Company | Video disc configuration |
DE3016533A1 (de) * | 1980-04-29 | 1981-11-05 | Linde Ag, 6200 Wiesbaden | Schieberventil |
JPS57113402A (en) * | 1981-01-05 | 1982-07-14 | Ricoh Co Ltd | Method and device for vertical thermomagnetic recording |
JPS5826336A (ja) * | 1981-08-06 | 1983-02-16 | Pioneer Electronic Corp | 光磁気記録方式の記録再生装置 |
US4544443A (en) * | 1983-05-13 | 1985-10-01 | Shap Kabushiki Kaisha | Method for manufacturing an optical memory element |
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 |
US4694447A (en) * | 1984-07-12 | 1987-09-15 | International Business Machines Corp. | Optical signal recorders employing two lasers and methods therefor |
EP0180459B1 (de) * | 1984-10-30 | 1991-12-18 | Brother Kogyo Kabushiki Kaisha | Magnetooptisches Speichermedium und Gerät zum Schreiben auf und Lesen von dem Medium |
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 |
US4730293A (en) * | 1986-09-15 | 1988-03-08 | Drexler Technology Corporation | Dual beam optical data system |
JPS63225945A (ja) * | 1987-03-16 | 1988-09-20 | Hitachi Ltd | 光磁気デイスク |
EP0297910B1 (de) * | 1987-07-01 | 1993-09-29 | Sharp Kabushiki Kaisha | Einrichtung zur optischen Aufzeichnung |
US4965780A (en) * | 1987-08-12 | 1990-10-23 | Digital Equipment Corporation | Magneto-optical data recording device using a wavelength and polarization-sensitive splitter |
JP2839498B2 (ja) * | 1988-02-03 | 1998-12-16 | 株式会社日立製作所 | 光ディスク媒体 |
NL8900362A (nl) * | 1989-02-15 | 1990-09-03 | Philips Nv | Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager. |
NL8902293A (nl) * | 1989-09-14 | 1991-04-02 | Philips Nv | Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager. |
-
1989
- 1989-02-15 NL NL8900362A patent/NL8900362A/nl not_active Application Discontinuation
-
1990
- 1990-02-09 AT AT90200296T patent/ATE137600T1/de not_active IP Right Cessation
- 1990-02-09 SG SG1996006260A patent/SG44721A1/en unknown
- 1990-02-09 EP EP90200296A patent/EP0383386B1/de not_active Expired - Lifetime
- 1990-02-09 DE DE69026734T patent/DE69026734T2/de not_active Expired - Fee Related
- 1990-02-12 CN CN90101404A patent/CN1022651C/zh not_active Expired - Fee Related
- 1990-02-15 JP JP03505690A patent/JP3201759B2/ja not_active Expired - Fee Related
- 1990-02-15 KR KR1019900001822A patent/KR0152530B1/ko not_active IP Right Cessation
-
1993
- 1993-12-14 US US08/166,804 patent/US5442597A/en not_active Expired - Fee Related
-
1995
- 1995-06-07 US US08/488,537 patent/US5553038A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR900013475A (ko) | 1990-09-05 |
EP0383386B1 (de) | 1996-05-01 |
US5553038A (en) | 1996-09-03 |
JPH02246035A (ja) | 1990-10-01 |
CN1044997A (zh) | 1990-08-29 |
KR0152530B1 (ko) | 1998-10-15 |
DE69026734D1 (de) | 1996-06-05 |
JP3201759B2 (ja) | 2001-08-27 |
SG44721A1 (en) | 1997-12-19 |
CN1022651C (zh) | 1993-11-03 |
EP0383386A1 (de) | 1990-08-22 |
NL8900362A (nl) | 1990-09-03 |
US5442597A (en) | 1995-08-15 |
ATE137600T1 (de) | 1996-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V., EINDHOVEN, N |
|
8339 | Ceased/non-payment of the annual fee |