DE69231042D1 - Magnetooptisches Aufzeichnungs- und/oder -wiedergabegerät - Google Patents
Magnetooptisches Aufzeichnungs- und/oder -wiedergabegerätInfo
- Publication number
- DE69231042D1 DE69231042D1 DE69231042T DE69231042T DE69231042D1 DE 69231042 D1 DE69231042 D1 DE 69231042D1 DE 69231042 T DE69231042 T DE 69231042T DE 69231042 T DE69231042 T DE 69231042T DE 69231042 D1 DE69231042 D1 DE 69231042D1
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- optical recording
- reproducing device
- reproducing
- recording
- 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
- G11B11/10595—Control of operating function
- G11B11/10597—Adaptations for transducing various formats on the same or different carriers
-
- 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
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1807091A JPH04255937A (ja) | 1991-02-08 | 1991-02-08 | 光磁気記録媒体 |
JP4289091A JPH04259943A (ja) | 1991-02-15 | 1991-02-15 | 光磁気ディスクの記録再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69231042D1 true DE69231042D1 (de) | 2000-06-15 |
DE69231042T2 DE69231042T2 (de) | 2000-09-28 |
Family
ID=26354690
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69225159T Expired - Lifetime DE69225159T2 (de) | 1991-02-08 | 1992-02-07 | Magnetooptisches Medium |
DE69231042T Expired - Lifetime DE69231042T2 (de) | 1991-02-08 | 1992-02-07 | Magnetooptisches Aufzeichnungs- und/oder -wiedergabegerät |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69225159T Expired - Lifetime DE69225159T2 (de) | 1991-02-08 | 1992-02-07 | Magnetooptisches Medium |
Country Status (3)
Country | Link |
---|---|
US (1) | US5579294A (de) |
EP (2) | EP0498459B1 (de) |
DE (2) | DE69225159T2 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2986622B2 (ja) * | 1992-09-02 | 1999-12-06 | シャープ株式会社 | 光磁気メモリー素子およびその記録再生方法 |
US5699342A (en) * | 1994-02-07 | 1997-12-16 | Mitsubishi Denki Kabushiki Kaisha | Method of and device for recording and playing back an optical disk having a test playback region utilizing pits of minimum size for controlling the power of the laser |
JPH07244876A (ja) * | 1994-03-01 | 1995-09-19 | Sharp Corp | 光磁気記録媒体及び光磁気記録再生方法 |
US5568461A (en) | 1994-04-20 | 1996-10-22 | Matsushita Electric Industrial Co., Ltd. | Optical information recording and reproducing apparatus |
JPH0927154A (ja) * | 1995-07-10 | 1997-01-28 | Fujitsu Ltd | 光磁気ディスク装置 |
ATE212468T1 (de) * | 1995-08-09 | 2002-02-15 | Sony Corp | Aufzeichnungsmedium, aufzeichnungsgerät und wiedergabegerät |
JP3424037B2 (ja) * | 1996-04-05 | 2003-07-07 | 富士通株式会社 | 光磁気記録媒体の情報再生方法及び情報記録方法、並びに光磁気再生装置 |
US6049517A (en) | 1996-04-30 | 2000-04-11 | Sony Corporation | Dual format audio signal compression |
US6226233B1 (en) | 1996-07-30 | 2001-05-01 | Seagate Technology, Inc. | Magneto-optical system utilizing MSR media |
US5982723A (en) * | 1996-09-30 | 1999-11-09 | Laser Dynamics, Inc. | Data recording and reproducing method for multi-layered optical disk system |
US20050058039A1 (en) * | 1997-01-16 | 2005-03-17 | Yasuo Kamatani | Multi-standard optical disk and method and apparatus of reading from and recording to the disk |
JP3615021B2 (ja) * | 1997-06-30 | 2005-01-26 | 富士通株式会社 | 光学的記憶装置及び光記憶媒体の記録再生方法 |
US6847590B2 (en) * | 1997-07-04 | 2005-01-25 | Sanyo Electric Co., Ltd. | Magneto-optical recording medium including a calibration magnetic domain recorded in a predetermined pattern in a recording layer |
JP3520183B2 (ja) * | 1997-07-04 | 2004-04-19 | 三洋電機株式会社 | 光磁気記録媒体の再生装置 |
JPH11283291A (ja) * | 1998-01-30 | 1999-10-15 | Fujitsu Ltd | 記憶装置、光学的記録媒体及び情報記録方法 |
US6278667B1 (en) * | 1998-01-30 | 2001-08-21 | Seagate Technology, Inc. | System and method for light power control in a magneto-optical drive |
JP2000021039A (ja) * | 1998-06-30 | 2000-01-21 | Sony Corp | 再生装置及び再生方法 |
JP3675340B2 (ja) * | 2001-01-26 | 2005-07-27 | ヤマハ株式会社 | 情報記録装置およびプログラム |
US7317674B2 (en) * | 2003-03-11 | 2008-01-08 | Intersil Americas Inc. | Optical pick-up units and laser drivers with increased functionality |
JP2007334992A (ja) * | 2006-06-15 | 2007-12-27 | Hitachi Ltd | 光ディスク再生装置および光ディスク再生方法 |
US7813247B2 (en) * | 2006-07-06 | 2010-10-12 | Intersil Americas Inc. | Hybrid laser diode drivers that include a decoder |
US8018809B2 (en) * | 2007-05-16 | 2011-09-13 | Intersil Americas Inc. | Hybrid laser diode drivers |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2110459B (en) * | 1982-11-08 | 1985-08-14 | Kokusai Denshin Denwa Co Ltd | Magneto-optical recording system |
JPS6171472A (ja) * | 1984-09-14 | 1986-04-12 | Pioneer Electronic Corp | 記録デイスク演奏装置 |
JP2647649B2 (ja) * | 1986-07-03 | 1997-08-27 | パイオニア株式会社 | 光ディスク記録方法 |
DE3752222T2 (de) * | 1986-07-08 | 1999-03-25 | Canon Kk | Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode |
JPS6358661A (ja) * | 1986-08-29 | 1988-03-14 | Mitsubishi Electric Corp | フロツピ−デイスクのタイプ識別回路 |
KR970002341B1 (ko) * | 1987-11-30 | 1997-03-03 | 소니 가부시끼가이샤 | 자기 광 기록 매체의 신호 재생 방법 |
JPH01149246A (ja) * | 1987-12-04 | 1989-06-12 | Sony Corp | 光磁気記録媒体 |
JP2708531B2 (ja) * | 1989-03-07 | 1998-02-04 | パイオニア株式会社 | ディスクプレーヤ |
JP2910082B2 (ja) * | 1989-08-31 | 1999-06-23 | ソニー株式会社 | 光磁気記録再生方法 |
US5168482A (en) * | 1989-08-31 | 1992-12-01 | Sony Corporation | Magnetooptical recording and playback method employing multi-layer recording medium with record holding layer and playback layer |
JPH0487069A (ja) * | 1990-07-31 | 1992-03-19 | Sony Corp | 光ディスク記録装置 |
JPH04105284A (ja) * | 1990-08-24 | 1992-04-07 | Sony Corp | 光ディスク記録及び/又は再生装置 |
JP2910250B2 (ja) * | 1990-12-27 | 1999-06-23 | ソニー株式会社 | 光磁気記録媒体 |
JP2969963B2 (ja) * | 1990-12-28 | 1999-11-02 | ソニー株式会社 | 光磁気記録媒体における信号再生方法 |
WO1992014245A1 (en) * | 1991-02-05 | 1992-08-20 | Sony Corporation | Method for reproducing signal in optically recording medium |
EP0526641B1 (de) * | 1991-02-05 | 1996-05-08 | Sony Corporation | Verfahren zur Wiedergabe eines Signals aus einem optischen Aufzeichnungsmedium |
CA2060547C (en) * | 1991-02-08 | 2002-04-23 | Masumi Ohta | System and method of reproducing signals recorded on a magneto-optic recording medium |
DE29617991U1 (de) * | 1996-10-16 | 1996-11-28 | Drebo Werkzeugfab Gmbh | Bohrervorsatz |
-
1992
- 1992-02-07 DE DE69225159T patent/DE69225159T2/de not_active Expired - Lifetime
- 1992-02-07 EP EP92102089A patent/EP0498459B1/de not_active Expired - Lifetime
- 1992-02-07 DE DE69231042T patent/DE69231042T2/de not_active Expired - Lifetime
- 1992-02-07 EP EP96113028A patent/EP0747896B1/de not_active Expired - Lifetime
-
1994
- 1994-09-01 US US08/299,544 patent/US5579294A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0498459A3 (en) | 1993-10-13 |
DE69225159D1 (de) | 1998-05-28 |
EP0498459A2 (de) | 1992-08-12 |
EP0747896A1 (de) | 1996-12-11 |
US5579294A (en) | 1996-11-26 |
DE69225159T2 (de) | 1998-08-13 |
EP0498459B1 (de) | 1998-04-22 |
EP0747896B1 (de) | 2000-05-10 |
DE69231042T2 (de) | 2000-09-28 |
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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) |