JPH0411926B2 - - Google Patents
Info
- Publication number
- JPH0411926B2 JPH0411926B2 JP57123812A JP12381282A JPH0411926B2 JP H0411926 B2 JPH0411926 B2 JP H0411926B2 JP 57123812 A JP57123812 A JP 57123812A JP 12381282 A JP12381282 A JP 12381282A JP H0411926 B2 JPH0411926 B2 JP H0411926B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- record carrier
- output
- circuit
- light source
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002123 temporal effect 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
- G11B7/0945—Methods for initialising servos, start-up sequences
Landscapes
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12381282A JPS5914137A (ja) | 1982-07-15 | 1982-07-15 | 光学式記録再生装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12381282A JPS5914137A (ja) | 1982-07-15 | 1982-07-15 | 光学式記録再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5914137A JPS5914137A (ja) | 1984-01-25 |
JPH0411926B2 true JPH0411926B2 (da) | 1992-03-03 |
Family
ID=14869943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12381282A Granted JPS5914137A (ja) | 1982-07-15 | 1982-07-15 | 光学式記録再生装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5914137A (da) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54102109A (en) * | 1978-01-27 | 1979-08-11 | Matsushita Electric Ind Co Ltd | Focusing method of optical recorder |
-
1982
- 1982-07-15 JP JP12381282A patent/JPS5914137A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54102109A (en) * | 1978-01-27 | 1979-08-11 | Matsushita Electric Ind Co Ltd | Focusing method of optical recorder |
Also Published As
Publication number | Publication date |
---|---|
JPS5914137A (ja) | 1984-01-25 |
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