JPS6412017B2 - - Google Patents
Info
- Publication number
- JPS6412017B2 JPS6412017B2 JP15433483A JP15433483A JPS6412017B2 JP S6412017 B2 JPS6412017 B2 JP S6412017B2 JP 15433483 A JP15433483 A JP 15433483A JP 15433483 A JP15433483 A JP 15433483A JP S6412017 B2 JPS6412017 B2 JP S6412017B2
- Authority
- JP
- Japan
- Prior art keywords
- photodetector
- optical disk
- optical
- light
- reflected light
- 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
- 230000003287 optical effect Effects 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000005236 sound signal Effects 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15433483A JPS6045948A (ja) | 1983-08-24 | 1983-08-24 | 光デイスクヘツドのフオ−カスずれ検出装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15433483A JPS6045948A (ja) | 1983-08-24 | 1983-08-24 | 光デイスクヘツドのフオ−カスずれ検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6045948A JPS6045948A (ja) | 1985-03-12 |
| JPS6412017B2 true JPS6412017B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-02-28 |
Family
ID=15581876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15433483A Granted JPS6045948A (ja) | 1983-08-24 | 1983-08-24 | 光デイスクヘツドのフオ−カスずれ検出装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045948A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06101138B2 (ja) * | 1987-03-19 | 1994-12-12 | 松下電器産業株式会社 | 光ヘツド装置 |
-
1983
- 1983-08-24 JP JP15433483A patent/JPS6045948A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6045948A (ja) | 1985-03-12 |