JPH0458659B2 - - Google Patents
Info
- Publication number
- JPH0458659B2 JPH0458659B2 JP6356585A JP6356585A JPH0458659B2 JP H0458659 B2 JPH0458659 B2 JP H0458659B2 JP 6356585 A JP6356585 A JP 6356585A JP 6356585 A JP6356585 A JP 6356585A JP H0458659 B2 JPH0458659 B2 JP H0458659B2
- Authority
- JP
- Japan
- Prior art keywords
- amplitude
- signal
- output
- information
- control
- 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 11
- 230000007423 decrease Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
-
- 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
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6356585A JPS60229240A (ja) | 1985-03-29 | 1985-03-29 | 光学的情報再生装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6356585A JPS60229240A (ja) | 1985-03-29 | 1985-03-29 | 光学的情報再生装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60229240A JPS60229240A (ja) | 1985-11-14 |
| JPH0458659B2 true JPH0458659B2 (enrdf_load_stackoverflow) | 1992-09-18 |
Family
ID=13232885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6356585A Granted JPS60229240A (ja) | 1985-03-29 | 1985-03-29 | 光学的情報再生装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60229240A (enrdf_load_stackoverflow) |
-
1985
- 1985-03-29 JP JP6356585A patent/JPS60229240A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60229240A (ja) | 1985-11-14 |
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