AU7515574A - Apparatus fdr reading a disc-shaped record carrier - Google Patents
Apparatus fdr reading a disc-shaped record carrierInfo
- Publication number
- AU7515574A AU7515574A AU75155/74A AU7515574A AU7515574A AU 7515574 A AU7515574 A AU 7515574A AU 75155/74 A AU75155/74 A AU 75155/74A AU 7515574 A AU7515574 A AU 7515574A AU 7515574 A AU7515574 A AU 7515574A
- Authority
- AU
- Australia
- Prior art keywords
- disc
- reading
- record carrier
- shaped record
- apparatus fdr
- 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
- G11B7/08—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
- G11B7/0948—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 specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
-
- 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
-
- 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
- G11B7/0946—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 specially adapted for operation during external perturbations not related to the carrier or servo beam, e.g. vibration
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7315419A NL7315419A (en) | 1973-11-10 | 1973-11-10 | DEVICE FOR READING A DISK-SHAPED REGISTRATION CARRIER. |
NLNL7315419 | 1973-11-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU7515574A true AU7515574A (en) | 1976-05-13 |
AU489914B2 AU489914B2 (en) | 1976-05-13 |
Family
ID=
Also Published As
Publication number | Publication date |
---|---|
DK580974A (en) | 1975-07-07 |
BR7409349A (en) | 1976-05-18 |
AT336298B (en) | 1977-04-25 |
NO144501C (en) | 1981-09-09 |
CH579807A5 (en) | 1976-09-15 |
GB1490726A (en) | 1977-11-02 |
FR2251067B1 (en) | 1983-08-05 |
NL7315419A (en) | 1975-05-13 |
NO744015L (en) | 1975-06-09 |
DE2452815A1 (en) | 1975-06-26 |
ES431776A1 (en) | 1976-12-16 |
SE7413962L (en) | 1975-05-12 |
IT1024778B (en) | 1978-07-20 |
NO144501B (en) | 1981-06-01 |
JPS5081218A (en) | 1975-07-01 |
ZA746767B (en) | 1976-05-26 |
AR204426A1 (en) | 1976-02-06 |
BE822040A (en) | 1975-05-09 |
DE2452815C2 (en) | 1982-10-28 |
ATA895674A (en) | 1976-08-15 |
JPS5433724B2 (en) | 1979-10-23 |
CA1055156A (en) | 1979-05-22 |
DK135070B (en) | 1977-02-28 |
DK135070C (en) | 1977-08-01 |
SE394335B (en) | 1977-06-20 |
FR2251067A1 (en) | 1975-06-06 |
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