DE69020624D1 - Signalwiedergabegerät für optische Aufzeichnungs- und Wiedergabeapparatur und Methode für dasselbe. - Google Patents
Signalwiedergabegerät für optische Aufzeichnungs- und Wiedergabeapparatur und Methode für dasselbe.Info
- Publication number
- DE69020624D1 DE69020624D1 DE69020624T DE69020624T DE69020624D1 DE 69020624 D1 DE69020624 D1 DE 69020624D1 DE 69020624 T DE69020624 T DE 69020624T DE 69020624 T DE69020624 T DE 69020624T DE 69020624 D1 DE69020624 D1 DE 69020624D1
- Authority
- DE
- Germany
- Prior art keywords
- reproducing apparatus
- same
- optical recording
- signal
- signal reproducing
- 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
- 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
- G11B7/13—Optical detectors therefor
-
- 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
-
- 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
-
- 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
-
- 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
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1100112A JP2586641B2 (ja) | 1989-04-21 | 1989-04-21 | 光ヘッド装置 |
JP17651489A JP2600911B2 (ja) | 1989-07-06 | 1989-07-06 | 光ディスク信号再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69020624D1 true DE69020624D1 (de) | 1995-08-10 |
DE69020624T2 DE69020624T2 (de) | 1995-12-21 |
Family
ID=26441196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69020624T Expired - Lifetime DE69020624T2 (de) | 1989-04-21 | 1990-04-23 | Signalwiedergabegerät für optische Aufzeichnungs- und Wiedergabeapparatur und Methode für dasselbe. |
Country Status (3)
Country | Link |
---|---|
US (1) | US5181161A (de) |
EP (1) | EP0393719B1 (de) |
DE (1) | DE69020624T2 (de) |
Families Citing this family (119)
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JP3350072B2 (ja) * | 1991-11-12 | 2002-11-25 | パイオニア株式会社 | ピックアップ装置 |
JP3086077B2 (ja) * | 1991-11-19 | 2000-09-11 | パイオニア株式会社 | 光ディスクとその記録信号再生装置 |
IL101570A0 (en) * | 1992-04-10 | 1992-12-30 | Amir Alon | Method and apparatus for reading data |
JPH0696468A (ja) * | 1992-09-14 | 1994-04-08 | Canon Inc | 光記録再生装置及び半導体レーザアレイ |
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FR2699724B1 (fr) * | 1992-12-22 | 1995-01-20 | Thomson Csf | Procédé de lecture d'un support d'enregistrement et système appliquant ce procédé. |
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JP3526142B2 (ja) * | 1996-07-18 | 2004-05-10 | パイオニア株式会社 | 光学式ピックアップ装置 |
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JP2001256731A (ja) * | 2000-01-07 | 2001-09-21 | Sony Corp | 情報記録媒体、情報再生装置、情報再生方法、情報記録装置及び情報記録方法 |
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Family Cites Families (11)
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US4536866A (en) * | 1978-11-30 | 1985-08-20 | Videonics Of Hawaii, Inc. | Information retrieval system and apparatus |
JPS5753831A (en) * | 1980-09-12 | 1982-03-31 | Olympus Optical Co Ltd | Method and device for reproduction of optical information |
JPS59139152A (ja) * | 1983-01-28 | 1984-08-09 | Canon Inc | 光情報再生方法および装置 |
US4720825A (en) * | 1984-02-06 | 1988-01-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data reproducing devices having improved trick play capability |
US4858218A (en) * | 1984-09-12 | 1989-08-15 | Nikon Corporation | Optical recording medium and reproducing apparatus |
US4633455A (en) * | 1985-03-25 | 1986-12-30 | Rca Corporation | Headwheel for a multiple beam optical tape playback system |
JPS61273779A (ja) * | 1985-05-28 | 1986-12-04 | Canon Inc | 情報再生装置 |
JPS61287056A (ja) * | 1985-06-12 | 1986-12-17 | Toshiba Corp | 光情報記録再生装置 |
JP2619381B2 (ja) * | 1987-03-20 | 1997-06-11 | 株式会社日立製作所 | 光学的情報再生装置 |
JPH01138627A (ja) * | 1987-11-26 | 1989-05-31 | Ricoh Co Ltd | 光デイスク装置 |
JPH0782721B2 (ja) * | 1988-10-05 | 1995-09-06 | パイオニア株式会社 | ディスクプレーヤのサーボ装置 |
-
1990
- 1990-04-23 DE DE69020624T patent/DE69020624T2/de not_active Expired - Lifetime
- 1990-04-23 EP EP90107616A patent/EP0393719B1/de not_active Expired - Lifetime
- 1990-04-23 US US07/513,451 patent/US5181161A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0393719A2 (de) | 1990-10-24 |
EP0393719A3 (de) | 1992-01-15 |
US5181161A (en) | 1993-01-19 |
EP0393719B1 (de) | 1995-07-05 |
DE69020624T2 (de) | 1995-12-21 |
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