JPS631653B2 - - Google Patents
Info
- Publication number
- JPS631653B2 JPS631653B2 JP55067632A JP6763280A JPS631653B2 JP S631653 B2 JPS631653 B2 JP S631653B2 JP 55067632 A JP55067632 A JP 55067632A JP 6763280 A JP6763280 A JP 6763280A JP S631653 B2 JPS631653 B2 JP S631653B2
- Authority
- JP
- Japan
- Prior art keywords
- track
- information
- signal
- tracking
- pit
- 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
- 238000002834 transmittance Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000001228 spectrum Methods 0.000 description 7
- 230000001678 irradiating effect Effects 0.000 description 2
- 101150054854 POU1F1 gene Proteins 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000737 periodic 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
- G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
-
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
-
- 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
- G11B7/0901—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 track following only
- G11B7/0904—Dithered tracking systems
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6763280A JPS56163534A (en) | 1980-05-20 | 1980-05-20 | Optical information recording carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6763280A JPS56163534A (en) | 1980-05-20 | 1980-05-20 | Optical information recording carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56163534A JPS56163534A (en) | 1981-12-16 |
| JPS631653B2 true JPS631653B2 (de) | 1988-01-13 |
Family
ID=13350547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6763280A Granted JPS56163534A (en) | 1980-05-20 | 1980-05-20 | Optical information recording carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56163534A (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0283048U (de) * | 1988-12-12 | 1990-06-27 | ||
| JPH0543882Y2 (de) * | 1988-11-02 | 1993-11-05 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5297125A (en) * | 1989-08-25 | 1994-03-22 | Sony Corporation | Optical recording medium and information recording apparatus for recording bursts of low-pass filtered reproduce-only information in a wobbling pre-groove on the optical recording medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54130102A (en) * | 1978-03-16 | 1979-10-09 | Philips Nv | Method of writing information* recording carrier* recorded record carrier* and information writing and reading device |
-
1980
- 1980-05-20 JP JP6763280A patent/JPS56163534A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54130102A (en) * | 1978-03-16 | 1979-10-09 | Philips Nv | Method of writing information* recording carrier* recorded record carrier* and information writing and reading device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0543882Y2 (de) * | 1988-11-02 | 1993-11-05 | ||
| JPH0283048U (de) * | 1988-12-12 | 1990-06-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56163534A (en) | 1981-12-16 |
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