JPS6248300B2 - - Google Patents
Info
- Publication number
- JPS6248300B2 JPS6248300B2 JP11546582A JP11546582A JPS6248300B2 JP S6248300 B2 JPS6248300 B2 JP S6248300B2 JP 11546582 A JP11546582 A JP 11546582A JP 11546582 A JP11546582 A JP 11546582A JP S6248300 B2 JPS6248300 B2 JP S6248300B2
- Authority
- JP
- Japan
- Prior art keywords
- information recording
- signal
- recording carrier
- focus lens
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 6
- 230000008094 contradictory effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000006735 deficit Effects 0.000 description 1
- 230000002996 emotional effect Effects 0.000 description 1
- 239000007787 solid Substances 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 |
|---|---|---|---|
| JP11546582A JPS598144A (ja) | 1982-07-05 | 1982-07-05 | 光学的情報読取装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11546582A JPS598144A (ja) | 1982-07-05 | 1982-07-05 | 光学的情報読取装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS598144A JPS598144A (ja) | 1984-01-17 |
| JPS6248300B2 true JPS6248300B2 (enrdf_load_stackoverflow) | 1987-10-13 |
Family
ID=14663206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11546582A Granted JPS598144A (ja) | 1982-07-05 | 1982-07-05 | 光学的情報読取装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS598144A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61104336A (ja) * | 1984-10-23 | 1986-05-22 | Seiko Epson Corp | 光学式記録装置 |
| DE3732997A1 (de) * | 1987-09-30 | 1989-04-13 | Thomson Brandt Gmbh | Geraet zur wiedergabe von daten |
-
1982
- 1982-07-05 JP JP11546582A patent/JPS598144A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS598144A (ja) | 1984-01-17 |