JPS6331860B2 - - Google Patents
Info
- Publication number
- JPS6331860B2 JPS6331860B2 JP57202168A JP20216882A JPS6331860B2 JP S6331860 B2 JPS6331860 B2 JP S6331860B2 JP 57202168 A JP57202168 A JP 57202168A JP 20216882 A JP20216882 A JP 20216882A JP S6331860 B2 JPS6331860 B2 JP S6331860B2
- Authority
- JP
- Japan
- Prior art keywords
- laser
- current
- semiconductor laser
- information
- automatic focusing
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57202168A JPS5994252A (ja) | 1982-11-19 | 1982-11-19 | 半導体レ−ザ−駆動装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57202168A JPS5994252A (ja) | 1982-11-19 | 1982-11-19 | 半導体レ−ザ−駆動装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5994252A JPS5994252A (ja) | 1984-05-30 |
| JPS6331860B2 true JPS6331860B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1988-06-27 |
Family
ID=16453084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57202168A Granted JPS5994252A (ja) | 1982-11-19 | 1982-11-19 | 半導体レ−ザ−駆動装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5994252A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4197450B2 (ja) * | 2003-04-10 | 2008-12-17 | パイオニア株式会社 | 情報記録装置、情報再生装置、情報記録方法、情報再生方法および情報記録媒体 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5733441A (en) * | 1980-08-07 | 1982-02-23 | Matsushita Electric Ind Co Ltd | Optical information recorder and reproducer |
| JPS6343819A (ja) * | 1986-08-09 | 1988-02-24 | Toyoda Gosei Co Ltd | 自動車用ドアガラスラン |
-
1982
- 1982-11-19 JP JP57202168A patent/JPS5994252A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5994252A (ja) | 1984-05-30 |