DE69219683T2 - Magneto-optische Abtastvorrichtung - Google Patents
Magneto-optische AbtastvorrichtungInfo
- Publication number
- DE69219683T2 DE69219683T2 DE69219683T DE69219683T DE69219683T2 DE 69219683 T2 DE69219683 T2 DE 69219683T2 DE 69219683 T DE69219683 T DE 69219683T DE 69219683 T DE69219683 T DE 69219683T DE 69219683 T2 DE69219683 T2 DE 69219683T2
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- optical scanner
- scanner
- 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
- 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
- G11B11/10532—Heads
- G11B11/10541—Heads for reproducing
- G11B11/10543—Heads for reproducing using optical beam of radiation
- G11B11/10545—Heads for reproducing using optical beam of radiation interacting directly with the magnetisation on the record carrier
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3196095A JPH0520725A (ja) | 1991-07-11 | 1991-07-11 | 光ピツクアツプ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69219683D1 DE69219683D1 (de) | 1997-06-19 |
DE69219683T2 true DE69219683T2 (de) | 1997-09-11 |
Family
ID=16352135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69219683T Expired - Fee Related DE69219683T2 (de) | 1991-07-11 | 1992-07-10 | Magneto-optische Abtastvorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5323373A (de) |
EP (1) | EP0523570B1 (de) |
JP (1) | JPH0520725A (de) |
DE (1) | DE69219683T2 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6215758B1 (en) | 1996-10-04 | 2001-04-10 | Sony Corporation | Recording medium |
US6850475B1 (en) * | 1996-07-30 | 2005-02-01 | Seagate Technology, Llc | Single frequency laser source for optical data storage system |
US5940549A (en) * | 1996-07-30 | 1999-08-17 | Seagate Technology, Incorporated | Optical system and method using optical fibers for storage and retrieval of information |
KR100197619B1 (ko) * | 1996-10-04 | 1999-06-15 | 윤종용 | 가변속 재생이 가능한 광디스크시스템의 등화기특성 보상장치 |
US6154326A (en) | 1998-03-19 | 2000-11-28 | Fuji Xerox Co., Ltd. | Optical head, disk apparatus, method for manufacturing optical head, and optical element |
US6574015B1 (en) | 1998-05-19 | 2003-06-03 | Seagate Technology Llc | Optical depolarizer |
KR20000014761A (ko) * | 1998-08-21 | 2000-03-15 | 구자홍 | 재생신호의 등화특성 조절장치 및 조절방법 |
US6611635B1 (en) | 1998-10-09 | 2003-08-26 | Fujitsu Limited | Opto-electronic substrates with electrical and optical interconnections and methods for making |
US6690845B1 (en) | 1998-10-09 | 2004-02-10 | Fujitsu Limited | Three-dimensional opto-electronic modules with electrical and optical interconnections and methods for making |
US6845184B1 (en) * | 1998-10-09 | 2005-01-18 | Fujitsu Limited | Multi-layer opto-electronic substrates with electrical and optical interconnections and methods for making |
JP4545882B2 (ja) * | 2000-05-23 | 2010-09-15 | 関明 来 | 二重外部共振器つきレーザダイオード式距離・変位計 |
JP2003234527A (ja) * | 2002-02-06 | 2003-08-22 | Acterna R & D Kk | 波長可変光源装置 |
JP5484661B2 (ja) * | 2007-07-10 | 2014-05-07 | アズビル株式会社 | 物理量センサおよび物理量計測方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5636185A (en) * | 1979-08-31 | 1981-04-09 | Mitsubishi Electric Corp | Optical information reader |
JPS5927974B2 (ja) * | 1980-03-31 | 1984-07-10 | 工業技術院長 | 光情報処理装置 |
JPS5945646A (ja) * | 1982-09-07 | 1984-03-14 | Hitachi Ltd | 光学的情報再生装置 |
JP2661114B2 (ja) * | 1988-03-10 | 1997-10-08 | ソニー株式会社 | 光学記録媒体の再生装置 |
GB2229268A (en) * | 1989-02-27 | 1990-09-19 | Philips Nv | Radiation emitting arrangement monitoring and controlling system |
US5182735A (en) * | 1989-03-06 | 1993-01-26 | Eastman Kodak Company | Magneto-optic readout apparatus using polarization switching of readout beam |
DE69025108T2 (de) * | 1989-08-19 | 1996-05-30 | Fujitsu Ltd | Magnetooptischer Kopf |
US5152597A (en) * | 1990-12-03 | 1992-10-06 | Eastman Kodak Company | Magneto-optic readout using a polarization-preserving optical fiber |
JPH04255947A (ja) * | 1991-02-08 | 1992-09-10 | Sony Corp | 光磁気記録方法と光磁気記録再生装置 |
-
1991
- 1991-07-11 JP JP3196095A patent/JPH0520725A/ja not_active Withdrawn
-
1992
- 1992-07-10 US US07/912,967 patent/US5323373A/en not_active Expired - Fee Related
- 1992-07-10 DE DE69219683T patent/DE69219683T2/de not_active Expired - Fee Related
- 1992-07-10 EP EP92111817A patent/EP0523570B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69219683D1 (de) | 1997-06-19 |
JPH0520725A (ja) | 1993-01-29 |
EP0523570A2 (de) | 1993-01-20 |
EP0523570A3 (en) | 1993-07-14 |
US5323373A (en) | 1994-06-21 |
EP0523570B1 (de) | 1997-05-14 |
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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 |