DE68923782D1 - Magneto-optisches Scheibenaufzeichnungsgerät. - Google Patents
Magneto-optisches Scheibenaufzeichnungsgerät.Info
- Publication number
- DE68923782D1 DE68923782D1 DE68923782T DE68923782T DE68923782D1 DE 68923782 D1 DE68923782 D1 DE 68923782D1 DE 68923782 T DE68923782 T DE 68923782T DE 68923782 T DE68923782 T DE 68923782T DE 68923782 D1 DE68923782 D1 DE 68923782D1
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- optical disc
- disc recorder
- recorder
- 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
- G11B11/10517—Overwriting or erasing
- G11B11/10519—Direct overwriting, i.e. performing erasing and recording using the same transducing means
-
- 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
- G11B11/1051—Recording by modulating both the magnetic field and the light beam at the transducers
- G11B11/10513—Recording by modulating both the magnetic field and the light beam at the transducers one of the light beam or the magnetic field being modulated by data and the other by a clock or frequency generator
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63333685A JP2701403B2 (ja) | 1988-12-29 | 1988-12-29 | 光磁気デイスク装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68923782D1 true DE68923782D1 (de) | 1995-09-14 |
DE68923782T2 DE68923782T2 (de) | 1996-02-08 |
Family
ID=18268821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68923782T Expired - Fee Related DE68923782T2 (de) | 1988-12-29 | 1989-12-21 | Magneto-optisches Scheibenaufzeichnungsgerät. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4998231A (de) |
EP (1) | EP0376818B1 (de) |
JP (1) | JP2701403B2 (de) |
KR (1) | KR0142326B1 (de) |
DE (1) | DE68923782T2 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5208792A (en) * | 1987-05-29 | 1993-05-04 | Matsushita Electric Industrial Co., Ltd. | Recording and reproducing apparatus using opto-magneto media |
AU633345B2 (en) * | 1989-08-22 | 1993-01-28 | Sony Corporation | Magnetic head position controlling apparatus |
DE3936314A1 (de) * | 1989-11-01 | 1991-05-02 | Linck Masch Gatterlinck | Mehrschichtmassivholzerzeugnisse wie balken, bretter und leimbinder sowie verfahren zu deren herstellung |
NL8902728A (nl) * | 1989-11-06 | 1991-06-03 | Philips Nv | Werkwijze en inrichting voor het inschrijven en uitlezen van een magneto-optische registratiedrager. |
JP3134290B2 (ja) * | 1989-11-21 | 2001-02-13 | ソニー株式会社 | 光磁気記録装置 |
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 |
US5195152A (en) * | 1991-11-04 | 1993-03-16 | Eastman Kodak Company | Multichannel optical recording apparatus employing laser diodes |
JP3065404B2 (ja) * | 1991-11-18 | 2000-07-17 | シャープ株式会社 | 外部磁界発生装置 |
US5450381A (en) * | 1992-07-07 | 1995-09-12 | Sony Corporation | Magneto-optical recording utilizing signal phase adjustment |
US5388085A (en) * | 1993-03-03 | 1995-02-07 | International Business Machines Corporation | Apparatus and method for accessing sectors of a rotating disk |
JPH06309672A (ja) * | 1993-04-26 | 1994-11-04 | Sony Corp | 光ディスク記録媒体及び光ディスク装置 |
US5381390A (en) * | 1993-06-03 | 1995-01-10 | Eastman Kodak Company | Directly overwrite information by using two radiation beams onto a single magneto-optical recording |
US5666330A (en) * | 1994-07-21 | 1997-09-09 | Telecom Solutions, Inc. | Disciplined time scale generator for primary reference clocks |
TW347899U (en) * | 1994-08-31 | 1998-12-11 | Sony Corp | Optical recording/reproducing device |
JP3551224B2 (ja) * | 1997-03-25 | 2004-08-04 | 富士通株式会社 | 光磁気再生方法及びその実施に使用する装置 |
KR100294332B1 (ko) * | 1997-12-31 | 2002-07-31 | 엘지전자 주식회사 | 광자기 기록매체의 데이터 기록방법 및 장치 |
KR100312493B1 (ko) * | 1997-12-31 | 2001-12-28 | 구자홍 | 광자기기록매체상의기록방법및장치 |
JP2001167435A (ja) | 1999-12-03 | 2001-06-22 | Fujitsu Ltd | 光ディスク記録方法及び光ディスク再生方法並びにその方法を利用した光記録媒体、光ディスク装置 |
JP2009104686A (ja) * | 2007-10-22 | 2009-05-14 | Hitachi Ltd | 光ディスク媒体、情報記録方法及び光ディスクドライブ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4074085A (en) * | 1976-03-31 | 1978-02-14 | Eli S. Jacobs | Multiple beam optical record playback apparatus for simultaneous scan of plural data tracks |
JPS57133503A (en) * | 1981-02-10 | 1982-08-18 | Sharp Corp | Optical and magnetic recorder and reproducer |
US4558440A (en) * | 1982-08-19 | 1985-12-10 | Canon Kabushiki Kaisha | System for recording patterns of magnetically recorded information by utilizing the magneto-optic effect |
US4610009A (en) * | 1983-05-23 | 1986-09-02 | Xerox Corporation | Writing, erasing and readout system for a magneto-optic recording medium |
US4598393A (en) * | 1984-04-06 | 1986-07-01 | Drexler Technology Corporation | Three-beam optical servo tracking system with two-track parallel readout |
JPH0619863B2 (ja) * | 1984-06-13 | 1994-03-16 | 株式会社日立製作所 | 光磁気情報記憶方法及び装置 |
JPS619840A (ja) * | 1984-06-25 | 1986-01-17 | Tokyo Electric Co Ltd | 光学記憶方法 |
JP2575120B2 (ja) * | 1986-07-31 | 1997-01-22 | ソニー株式会社 | 光磁気記録装置 |
-
1988
- 1988-12-29 JP JP63333685A patent/JP2701403B2/ja not_active Expired - Fee Related
-
1989
- 1989-11-24 KR KR1019890017077A patent/KR0142326B1/ko not_active IP Right Cessation
- 1989-12-08 US US07/447,867 patent/US4998231A/en not_active Expired - Lifetime
- 1989-12-21 EP EP89403610A patent/EP0376818B1/de not_active Expired - Lifetime
- 1989-12-21 DE DE68923782T patent/DE68923782T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR0142326B1 (ko) | 1998-07-15 |
US4998231A (en) | 1991-03-05 |
JPH02179948A (ja) | 1990-07-12 |
KR900010693A (ko) | 1990-07-09 |
JP2701403B2 (ja) | 1998-01-21 |
DE68923782T2 (de) | 1996-02-08 |
EP0376818B1 (de) | 1995-08-09 |
EP0376818A3 (de) | 1991-03-13 |
EP0376818A2 (de) | 1990-07-04 |
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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 |