JPH0150011B2 - - Google Patents
Info
- Publication number
- JPH0150011B2 JPH0150011B2 JP57055796A JP5579682A JPH0150011B2 JP H0150011 B2 JPH0150011 B2 JP H0150011B2 JP 57055796 A JP57055796 A JP 57055796A JP 5579682 A JP5579682 A JP 5579682A JP H0150011 B2 JPH0150011 B2 JP H0150011B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- signal
- light beam
- disk
- semiconductor laser
- 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
- 239000004065 semiconductor Substances 0.000 claims description 23
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57055796A JPS58175140A (ja) | 1982-04-02 | 1982-04-02 | 光学的記録装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57055796A JPS58175140A (ja) | 1982-04-02 | 1982-04-02 | 光学的記録装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58175140A JPS58175140A (ja) | 1983-10-14 |
| JPH0150011B2 true JPH0150011B2 (cs) | 1989-10-26 |
Family
ID=13008870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57055796A Granted JPS58175140A (ja) | 1982-04-02 | 1982-04-02 | 光学的記録装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58175140A (cs) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01179224A (ja) * | 1987-12-28 | 1989-07-17 | Sony Corp | 記録装置 |
| JP2804050B2 (ja) * | 1988-09-28 | 1998-09-24 | 株式会社東芝 | 光記録・再生パワー制御方式 |
-
1982
- 1982-04-02 JP JP57055796A patent/JPS58175140A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58175140A (ja) | 1983-10-14 |
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