DE3688276D1 - Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem. - Google Patents
Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem.Info
- Publication number
- DE3688276D1 DE3688276D1 DE8686114312T DE3688276T DE3688276D1 DE 3688276 D1 DE3688276 D1 DE 3688276D1 DE 8686114312 T DE8686114312 T DE 8686114312T DE 3688276 T DE3688276 T DE 3688276T DE 3688276 D1 DE3688276 D1 DE 3688276D1
- Authority
- DE
- Germany
- Prior art keywords
- magneto
- bundle
- control device
- optical disk
- storage system
- 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
- G11B7/12—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
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Semiconductor Lasers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60230544A JP2557830B2 (ja) | 1985-10-16 | 1985-10-16 | 光学的記録再生装置における光量制御装置 |
JP60270476A JPS62129943A (ja) | 1985-11-30 | 1985-11-30 | サンプルホ−ルド回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3688276D1 true DE3688276D1 (de) | 1993-05-19 |
DE3688276T2 DE3688276T2 (de) | 1993-07-29 |
Family
ID=26529403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686114312T Expired - Fee Related DE3688276T2 (de) | 1985-10-16 | 1986-10-16 | Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem. |
Country Status (3)
Country | Link |
---|---|
US (2) | US4843604A (de) |
EP (1) | EP0219124B1 (de) |
DE (1) | DE3688276T2 (de) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4906874A (en) * | 1988-01-22 | 1990-03-06 | Sharp Kabushiki Kaisha | Analog signal switching device for use in an optical memory |
US5101385A (en) * | 1988-03-14 | 1992-03-31 | Bernoulli Optical Systems Company | Magneto-optical information storage system for flexible media having maximum overwrite efficiency |
GB2216710B (en) * | 1988-03-14 | 1992-09-02 | Ici Plc | Optical or magneto-optical data system |
JPH0227533A (ja) * | 1988-07-18 | 1990-01-30 | Sony Corp | レーザダイオード駆動装置 |
JPH0296622U (de) * | 1989-01-18 | 1990-08-01 | ||
JPH0316038A (ja) * | 1989-06-13 | 1991-01-24 | Teac Corp | 情報記録再生装置 |
JP2775009B2 (ja) * | 1989-06-20 | 1998-07-09 | ソニー株式会社 | 光記録装置 |
JPH0330130A (ja) * | 1989-06-28 | 1991-02-08 | Sharp Corp | 半導体レーザ駆動回路 |
US5185734A (en) * | 1990-07-20 | 1993-02-09 | International Business Machines Corporation | Calibrating and power-protecting laser drive circuits |
US5136569A (en) * | 1990-09-28 | 1992-08-04 | International Business Machines Corporation | Optical disk recorder for diverse media types and having a predetermined initialization or start-up procedure |
JP2838908B2 (ja) * | 1990-10-19 | 1998-12-16 | キヤノン株式会社 | 光磁気記録方法 |
JPH04170753A (ja) * | 1990-11-05 | 1992-06-18 | Olympus Optical Co Ltd | 光学的情報処理装置 |
JP3407893B2 (ja) * | 1991-05-27 | 2003-05-19 | パイオニア株式会社 | 半導体レーザ制御装置 |
JP2850966B2 (ja) * | 1991-08-02 | 1999-01-27 | シャープ株式会社 | 光磁気記録装置 |
US5345435A (en) * | 1991-08-30 | 1994-09-06 | Sony Corporation | Optical disc and method for recording on optical disc |
DE69322593T2 (de) * | 1992-10-20 | 1999-06-24 | Nikon Corp | Verfahren und Vorrichtung zur optischen Aufzeichnung |
JP3259204B2 (ja) * | 1992-10-21 | 2002-02-25 | 株式会社ニコン | 光記録方法及び光記録のパルストレイン条件決定方法 |
US5648952A (en) * | 1994-09-28 | 1997-07-15 | Ricoh Company, Ltd. | Phase-change optical disc recording method and apparatus, and information recording apparatus and recording pre-compensation method |
JP3795652B2 (ja) * | 1997-12-19 | 2006-07-12 | 株式会社リコー | 光ディスク駆動装置のレーザパワー制御装置 |
JP4068752B2 (ja) * | 1999-03-02 | 2008-03-26 | シャープ株式会社 | 光ディスク装置 |
US20030048821A1 (en) * | 2000-10-13 | 2003-03-13 | Shinichiro Iimura | Current generating circuit and method |
US20030003464A1 (en) * | 2000-11-27 | 2003-01-02 | Phan Brigitte C. | Dual bead assays including optical biodiscs and methods relating thereto |
US20040248093A1 (en) * | 2000-11-27 | 2004-12-09 | Coombs James Howard | Magneto-optical bio-discs and systems including related methods |
US20020172980A1 (en) * | 2000-11-27 | 2002-11-21 | Phan Brigitte Chau | Methods for decreasing non-specific binding of beads in dual bead assays including related optical biodiscs and disc drive systems |
KR100393213B1 (ko) * | 2001-02-07 | 2003-07-31 | 삼성전자주식회사 | 디스크 드라이브의 자동 파워 제어 장치 |
JP3700602B2 (ja) * | 2001-03-30 | 2005-09-28 | ヤマハ株式会社 | レーザ駆動装置 |
KR20040030950A (ko) * | 2001-08-10 | 2004-04-09 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광학주사장치 |
TWI226625B (en) * | 2002-09-13 | 2005-01-11 | Mediatek Inc | Method for controlling output power of a pick-up head using automatic power control loop |
JP4019280B2 (ja) * | 2003-10-30 | 2007-12-12 | ソニー株式会社 | 光ディスク装置 |
KR20070073855A (ko) * | 2004-10-05 | 2007-07-10 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 광 픽업의 신호용 피드백 제어 루프를 구비한 장치 |
JP2006185481A (ja) * | 2004-12-27 | 2006-07-13 | Toshiba Corp | 光ディスク記録再生装置およびオフセット補正方法 |
JP2016035794A (ja) * | 2014-08-01 | 2016-03-17 | 株式会社東芝 | 磁気ディスク装置、プリアンプ、及び制御方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1101633B (it) * | 1977-11-29 | 1985-10-07 | Exxon Research Engineering Co | Plastificazione di polimero elastomerico solfonato neutralizzato |
JPS56137598A (en) * | 1980-03-27 | 1981-10-27 | Victor Co Of Japan Ltd | Sample hold circuit |
JPS5894143A (ja) * | 1981-12-01 | 1983-06-04 | Matsushita Electric Ind Co Ltd | 光学的記録再生装置 |
US4651034A (en) * | 1982-11-26 | 1987-03-17 | Mitsubishi Denki Kabushiki Kaisha | Analog input circuit with combination sample and hold and filter |
JPS59119547A (ja) * | 1982-12-27 | 1984-07-10 | Hitachi Ltd | 光デイスク装置の半導体レ−ザ駆動装置 |
JPS59146457A (ja) * | 1983-02-10 | 1984-08-22 | Olympus Optical Co Ltd | 光出力自動制御装置 |
JPS6032145A (ja) * | 1983-08-01 | 1985-02-19 | Ricoh Co Ltd | 半導体レ−ザ駆動回路 |
JPS60171646A (ja) * | 1984-02-15 | 1985-09-05 | Fujitsu Ltd | 光デイスク装置用半導体レ−ザ駆動回路 |
JPS61117735A (ja) * | 1984-11-14 | 1986-06-05 | Hitachi Ltd | 光学的記録再生装置 |
-
1986
- 1986-10-16 DE DE8686114312T patent/DE3688276T2/de not_active Expired - Fee Related
- 1986-10-16 EP EP86114312A patent/EP0219124B1/de not_active Expired - Lifetime
- 1986-10-16 US US06/919,672 patent/US4843604A/en not_active Expired - Lifetime
-
1989
- 1989-03-16 US US07/324,458 patent/US4935915A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0219124B1 (de) | 1993-04-14 |
EP0219124A3 (en) | 1990-05-30 |
US4935915A (en) | 1990-06-19 |
US4843604A (en) | 1989-06-27 |
EP0219124A2 (de) | 1987-04-22 |
DE3688276T2 (de) | 1993-07-29 |
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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 |