JPS631650B2 - - Google Patents
Info
- Publication number
- JPS631650B2 JPS631650B2 JP9034282A JP9034282A JPS631650B2 JP S631650 B2 JPS631650 B2 JP S631650B2 JP 9034282 A JP9034282 A JP 9034282A JP 9034282 A JP9034282 A JP 9034282A JP S631650 B2 JPS631650 B2 JP S631650B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- information
- target value
- output
- photoelectric conversion
- 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
- 238000012937 correction Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 14
- 230000007423 decrease Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response 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
- G11B7/09—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
- G11B7/0908—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 for focusing only
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9034282A JPS58205936A (ja) | 1982-05-27 | 1982-05-27 | 光学的情報の読取装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9034282A JPS58205936A (ja) | 1982-05-27 | 1982-05-27 | 光学的情報の読取装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58205936A JPS58205936A (ja) | 1983-12-01 |
| JPS631650B2 true JPS631650B2 (enrdf_load_stackoverflow) | 1988-01-13 |
Family
ID=13995844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9034282A Granted JPS58205936A (ja) | 1982-05-27 | 1982-05-27 | 光学的情報の読取装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58205936A (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01235035A (ja) * | 1988-03-14 | 1989-09-20 | Matsushita Commun Ind Co Ltd | トラッキングサーボ装置 |
-
1982
- 1982-05-27 JP JP9034282A patent/JPS58205936A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58205936A (ja) | 1983-12-01 |
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