AU7442874A - Device for optically scanning an information track ona rotating information carrier - Google Patents
Device for optically scanning an information track ona rotating information carrierInfo
- Publication number
- AU7442874A AU7442874A AU74428/74A AU7442874A AU7442874A AU 7442874 A AU7442874 A AU 7442874A AU 74428/74 A AU74428/74 A AU 74428/74A AU 7442874 A AU7442874 A AU 7442874A AU 7442874 A AU7442874 A AU 7442874A
- Authority
- AU
- Australia
- Prior art keywords
- ona
- optically scanning
- information
- rotating
- information carrier
- 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
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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
-
- 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
- G11B7/0903—Multi-beam tracking systems
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7314464A NL7314464A (en) | 1973-10-20 | 1973-10-20 | DEVICE FOR OPTICAL SCANNING OF AN INFORMATION TRACK ON A ROTATING INFORMATION CARRIER. |
| NLNL7314464 | 1973-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU485474B2 AU485474B2 (en) | 1976-04-29 |
| AU7442874A true AU7442874A (en) | 1976-04-29 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| DE2448792A1 (en) | 1975-05-28 |
| CA1040741A (en) | 1978-10-17 |
| CH574151A5 (en) | 1976-03-31 |
| JPS5068731A (en) | 1975-06-09 |
| BR7408645D0 (en) | 1975-08-05 |
| ES431129A1 (en) | 1976-11-01 |
| NO743762L (en) | 1975-05-20 |
| DK545474A (en) | 1975-06-30 |
| ATA835874A (en) | 1977-02-15 |
| SE7413069L (en) | 1975-04-21 |
| AT339390B (en) | 1977-10-10 |
| FR2248569A1 (en) | 1975-05-16 |
| FR2248569B1 (en) | 1979-08-24 |
| GB1475179A (en) | 1977-06-01 |
| NL7314464A (en) | 1975-04-22 |
| BE821269A (en) | 1975-04-18 |
| IT1024629B (en) | 1978-07-20 |
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