DE3873448T2 - Magnetooptisches informationsspeichermedium und verfahren zum informationsaufzeichnen und loeschen. - Google Patents
Magnetooptisches informationsspeichermedium und verfahren zum informationsaufzeichnen und loeschen.Info
- Publication number
- DE3873448T2 DE3873448T2 DE19883873448 DE3873448T DE3873448T2 DE 3873448 T2 DE3873448 T2 DE 3873448T2 DE 19883873448 DE19883873448 DE 19883873448 DE 3873448 T DE3873448 T DE 3873448T DE 3873448 T2 DE3873448 T2 DE 3873448T2
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- recording
- storage medium
- information storage
- deleting
- 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
- G11B11/10502—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
-
- 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
-
- 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
- G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20753787 | 1987-08-21 | ||
JP63140468A JP2828993B2 (ja) | 1987-08-21 | 1988-06-09 | 光磁気記録媒体及びそれを用いた情報記録方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3873448D1 DE3873448D1 (de) | 1992-09-10 |
DE3873448T2 true DE3873448T2 (de) | 1993-01-28 |
Family
ID=26472962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883873448 Expired - Lifetime DE3873448T2 (de) | 1987-08-21 | 1988-08-17 | Magnetooptisches informationsspeichermedium und verfahren zum informationsaufzeichnen und loeschen. |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0304288B1 (de) |
JP (1) | JP2828993B2 (de) |
DE (1) | DE3873448T2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4893910A (en) * | 1988-03-16 | 1990-01-16 | Hewlett-Packard Company | Magneto-optical recording system having medium with domainless control layer |
US5175714A (en) * | 1988-09-30 | 1992-12-29 | Kabushiki Kaisha Toshiba | Method of magneto-optically recording/erasing information and magneto-optical information storage medium including recording and bias layers satisfying certain conditions |
US5087532A (en) * | 1989-08-01 | 1992-02-11 | Minnesota Mining And Manufacturing Company | Direct-overwrite magneto-optic media |
US5282095A (en) * | 1991-04-24 | 1994-01-25 | U.S. Philips Corporation | Direct over-write magneto-optical recording medium having multiple recording layers, and method of recording new information by directly overwriting pre-existing recorded information on such medium |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0180459B1 (de) * | 1984-10-30 | 1991-12-18 | Brother Kogyo Kabushiki Kaisha | Magnetooptisches Speichermedium und Gerät zum Schreiben auf und Lesen von dem Medium |
US4649519A (en) * | 1985-09-30 | 1987-03-10 | International Business Machines Corporation | Self biasing thermal magneto-optic medium |
JPH0695404B2 (ja) * | 1985-12-27 | 1994-11-24 | ソニー株式会社 | 光磁気記録方法 |
-
1988
- 1988-06-09 JP JP63140468A patent/JP2828993B2/ja not_active Expired - Fee Related
- 1988-08-17 DE DE19883873448 patent/DE3873448T2/de not_active Expired - Lifetime
- 1988-08-17 EP EP19880307628 patent/EP0304288B1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3873448D1 (de) | 1992-09-10 |
JPH01133242A (ja) | 1989-05-25 |
JP2828993B2 (ja) | 1998-11-25 |
EP0304288B1 (de) | 1992-08-05 |
EP0304288A1 (de) | 1989-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) |