DE69425810T2 - Optisches Aufzeichnungsverfahren und optisches Wiedergabeverfahren - Google Patents
Optisches Aufzeichnungsverfahren und optisches WiedergabeverfahrenInfo
- Publication number
- DE69425810T2 DE69425810T2 DE1994625810 DE69425810T DE69425810T2 DE 69425810 T2 DE69425810 T2 DE 69425810T2 DE 1994625810 DE1994625810 DE 1994625810 DE 69425810 T DE69425810 T DE 69425810T DE 69425810 T2 DE69425810 T2 DE 69425810T2
- Authority
- DE
- Germany
- Prior art keywords
- optical
- optical recording
- recording method
- reproduction
- reproduction method
- 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
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
- G11B7/0052—Reproducing involving reflectivity, absorption or colour changes
-
- 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
- G11B11/10502—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
- G11B11/10582—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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00455—Recording involving reflectivity, absorption or colour changes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
- G11B7/2572—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of organic materials
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24306—Metals or metalloids transition metal elements of groups 3-10
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31627—Next to aldehyde or ketone condensation product
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31674493A JPH07169057A (ja) | 1993-12-16 | 1993-12-16 | 光記録媒体及びその記録再生方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69425810D1 DE69425810D1 (de) | 2000-10-12 |
DE69425810T2 true DE69425810T2 (de) | 2001-04-12 |
Family
ID=18080428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1994625810 Expired - Fee Related DE69425810T2 (de) | 1993-12-16 | 1994-12-15 | Optisches Aufzeichnungsverfahren und optisches Wiedergabeverfahren |
Country Status (4)
Country | Link |
---|---|
US (1) | US5592461A (de) |
EP (1) | EP0658886B1 (de) |
JP (1) | JPH07169057A (de) |
DE (1) | DE69425810T2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5949751A (en) * | 1995-09-07 | 1999-09-07 | Pioneer Electronic Corporation | Optical recording medium and a method for reproducing information recorded from same |
JP3648378B2 (ja) * | 1998-03-20 | 2005-05-18 | 株式会社東芝 | 光ディスク |
US5952131A (en) * | 1998-04-27 | 1999-09-14 | Xerox Corporation | Core and shell matrix compositions and processes |
JP4290279B2 (ja) * | 1999-06-04 | 2009-07-01 | 独立行政法人産業技術総合研究所 | 光学試料体並びにその書込みおよび読出し方法 |
JP2001056961A (ja) * | 1999-08-17 | 2001-02-27 | Sharp Corp | 光記録媒体及びその再生方法 |
JP3885444B2 (ja) * | 2000-02-10 | 2007-02-21 | 富士ゼロックス株式会社 | 光読取装置および光記録読取装置 |
US20010038596A1 (en) * | 2000-03-17 | 2001-11-08 | Duanyi Xu | Multi-wavelength optical disc, apparatus and method for reading and writing signal therefor |
US7006411B2 (en) * | 2001-06-13 | 2006-02-28 | Ricoh Company, Ltd. | Optical pickup unit having electro-optical element and information recording and reproduction apparatus |
US20030207206A1 (en) * | 2002-04-22 | 2003-11-06 | General Electric Company | Limited play data storage media and method for limiting access to data thereon |
JP3896092B2 (ja) * | 2003-03-18 | 2007-03-22 | 株式会社東芝 | 光記録媒体 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8714202D0 (en) * | 1987-06-17 | 1987-07-22 | Plessey Co Plc | Contrast enthancement in optical data storage |
JPH0497242A (ja) * | 1990-08-10 | 1992-03-30 | Sharp Corp | 情報記録再生方法 |
JP2662308B2 (ja) * | 1990-08-28 | 1997-10-08 | シャープ株式会社 | 光メモリー素子の製造方法 |
US5064264A (en) * | 1990-10-26 | 1991-11-12 | International Business Machines Corporation | Photorefractive materials |
JPH0512715A (ja) * | 1991-07-03 | 1993-01-22 | Pioneer Electron Corp | 光記録媒体 |
US5464673A (en) * | 1991-08-08 | 1995-11-07 | Hitachi Chemical Co., Ltd. | Information recording medium having recording layer with organic polymer and dye contained therein |
JPH05225611A (ja) * | 1992-02-10 | 1993-09-03 | Hitachi Ltd | 光記録再生方法および光記録媒体とその製造方法 |
JP2744375B2 (ja) * | 1992-02-27 | 1998-04-28 | 入江 正浩 | 光メモリ素子及びそれを用いた記録方法 |
JP2650559B2 (ja) * | 1992-02-28 | 1997-09-03 | 日本ビクター株式会社 | 光記録媒体 |
US5294522A (en) * | 1992-03-05 | 1994-03-15 | Chisso Corporation | Photochromic compound |
JPH05249609A (ja) * | 1992-03-10 | 1993-09-28 | Pioneer Electron Corp | 光記録媒体 |
JPH05266478A (ja) * | 1992-03-18 | 1993-10-15 | Sharp Corp | 光メモリ素子及びそれを用いた再生方法 |
JP3287634B2 (ja) * | 1993-03-12 | 2002-06-04 | パイオニア株式会社 | 光ディスク及び光ディスク再生装置 |
-
1993
- 1993-12-16 JP JP31674493A patent/JPH07169057A/ja active Pending
-
1994
- 1994-12-15 US US08/356,589 patent/US5592461A/en not_active Expired - Lifetime
- 1994-12-15 EP EP94119882A patent/EP0658886B1/de not_active Expired - Lifetime
- 1994-12-15 DE DE1994625810 patent/DE69425810T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07169057A (ja) | 1995-07-04 |
EP0658886A1 (de) | 1995-06-21 |
US5592461A (en) | 1997-01-07 |
DE69425810D1 (de) | 2000-10-12 |
EP0658886B1 (de) | 2000-09-06 |
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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 |