DE69018714D1 - Halbleiterlasersteuerungskreis. - Google Patents
Halbleiterlasersteuerungskreis.Info
- Publication number
- DE69018714D1 DE69018714D1 DE69018714T DE69018714T DE69018714D1 DE 69018714 D1 DE69018714 D1 DE 69018714D1 DE 69018714 T DE69018714 T DE 69018714T DE 69018714 T DE69018714 T DE 69018714T DE 69018714 D1 DE69018714 D1 DE 69018714D1
- Authority
- DE
- Germany
- Prior art keywords
- control circuit
- semiconductor laser
- laser control
- semiconductor
- circuit
- 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
- G11B7/125—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/06825—Protecting the laser, e.g. during switch-on/off, detection of malfunctioning or degradation
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Head (AREA)
- Semiconductor Lasers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1165577A JPH0330130A (ja) | 1989-06-28 | 1989-06-28 | 半導体レーザ駆動回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69018714D1 true DE69018714D1 (de) | 1995-05-24 |
DE69018714T2 DE69018714T2 (de) | 1995-10-05 |
Family
ID=15815001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69018714T Expired - Lifetime DE69018714T2 (de) | 1989-06-28 | 1990-06-27 | Halbleiterlasersteuerungskreis. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5170389A (de) |
EP (1) | EP0405952B1 (de) |
JP (1) | JPH0330130A (de) |
CA (1) | CA2019936C (de) |
DE (1) | DE69018714T2 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0652018U (ja) * | 1992-12-25 | 1994-07-15 | 太陽誘電株式会社 | 光情報記録再生装置 |
US5422900A (en) * | 1994-04-28 | 1995-06-06 | Eastman Kodak Company | Integrated laser module |
EP0746888A1 (de) * | 1994-12-23 | 1996-12-11 | Koninklijke Philips Electronics N.V. | Laser-stromversorgungsschaltung sowie ein eine solche schaltung enthaltendes optisches aufzeichnungs- und/oder lesegerät |
JPH1075163A (ja) * | 1996-08-29 | 1998-03-17 | Sony Corp | スイッチ回路 |
JPH11213425A (ja) * | 1998-01-22 | 1999-08-06 | Olympus Optical Co Ltd | 光ディスク装置 |
CN1127185C (zh) * | 1999-05-21 | 2003-11-05 | 北京大学 | 半导体激光器及电吸收调制器的高码率驱动器 |
JP2001216647A (ja) * | 1999-11-22 | 2001-08-10 | Sanyo Electric Co Ltd | 制御装置 |
JP2001216646A (ja) | 1999-11-22 | 2001-08-10 | Sanyo Electric Co Ltd | データ記録装置 |
JP2001216645A (ja) | 1999-11-22 | 2001-08-10 | Sanyo Electric Co Ltd | 制御装置 |
JP3594547B2 (ja) | 1999-11-22 | 2004-12-02 | 三洋電機株式会社 | データ記録装置 |
JP3545330B2 (ja) | 1999-12-27 | 2004-07-21 | 三洋電機株式会社 | 記録制御装置 |
JP2001250327A (ja) * | 1999-12-27 | 2001-09-14 | Sanyo Electric Co Ltd | データ記録システム |
JP2001250329A (ja) * | 1999-12-27 | 2001-09-14 | Sanyo Electric Co Ltd | データ記録装置 |
JP3754288B2 (ja) * | 1999-12-27 | 2006-03-08 | 三洋電機株式会社 | 制御装置 |
TW473705B (en) * | 2000-01-28 | 2002-01-21 | Via Tech Inc | Method and device to prevent overcurrent of pickup head |
KR100464403B1 (ko) | 2001-07-20 | 2005-01-03 | 삼성전자주식회사 | 광디스크 기록/재생 장치의 이상 상태 검출 장치 |
US20060194355A1 (en) * | 2002-12-27 | 2006-08-31 | Franz Eberhard | Laser diode bar provided with a parallel connected diode for bridging said laser siode bar in case of failure |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56144590A (en) * | 1980-04-13 | 1981-11-10 | Matsushita Electric Ind Co Ltd | Driving device for semiconductor laser |
JPS5894143A (ja) * | 1981-12-01 | 1983-06-04 | Matsushita Electric Ind Co Ltd | 光学的記録再生装置 |
JPS58118042A (ja) * | 1982-01-06 | 1983-07-13 | Hitachi Ltd | 光デイスク装置 |
JPS58189849A (ja) * | 1982-04-30 | 1983-11-05 | Toshiba Corp | 半導体レ−ザの調整装置 |
JPS6190539A (ja) * | 1984-10-09 | 1986-05-08 | Olympus Optical Co Ltd | 光出力安定化装置 |
JP2563250B2 (ja) * | 1985-06-17 | 1996-12-11 | 松下電器産業株式会社 | 半導体レ−ザ駆動回路 |
US4685097A (en) * | 1985-07-25 | 1987-08-04 | Laser Magnetic Storage International Company | Power control system for a semiconductor laser |
JPS62102576A (ja) * | 1985-10-29 | 1987-05-13 | Toshiba Corp | レ−ザダイオ−ド駆動回路のリセツト回路 |
DE3688276T2 (de) * | 1985-10-16 | 1993-07-29 | Sharp Kk | Steuervorrichtung des buendels fuer magnetooptisches plattenspeichersystem. |
JP2615553B2 (ja) * | 1985-11-14 | 1997-05-28 | 富士通株式会社 | レーザ制御装置 |
JPH07111782B2 (ja) * | 1986-08-13 | 1995-11-29 | ソニー株式会社 | 光デイスクの記録再生装置 |
-
1989
- 1989-06-28 JP JP1165577A patent/JPH0330130A/ja active Pending
-
1990
- 1990-06-15 US US07/538,340 patent/US5170389A/en not_active Expired - Lifetime
- 1990-06-27 CA CA002019936A patent/CA2019936C/en not_active Expired - Fee Related
- 1990-06-27 DE DE69018714T patent/DE69018714T2/de not_active Expired - Lifetime
- 1990-06-27 EP EP90307046A patent/EP0405952B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2019936A1 (en) | 1990-12-28 |
EP0405952B1 (de) | 1995-04-19 |
CA2019936C (en) | 1994-08-23 |
US5170389A (en) | 1992-12-08 |
DE69018714T2 (de) | 1995-10-05 |
JPH0330130A (ja) | 1991-02-08 |
EP0405952A2 (de) | 1991-01-02 |
EP0405952A3 (en) | 1992-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN |