BE822040A - DEVICE FOR EXPLORING A DISC-SHAPED INFORMATION HOLDER - Google Patents
DEVICE FOR EXPLORING A DISC-SHAPED INFORMATION HOLDERInfo
- Publication number
- BE822040A BE822040A BE150377A BE150377A BE822040A BE 822040 A BE822040 A BE 822040A BE 150377 A BE150377 A BE 150377A BE 150377 A BE150377 A BE 150377A BE 822040 A BE822040 A BE 822040A
- Authority
- BE
- Belgium
- Prior art keywords
- exploring
- disc
- shaped information
- information holder
- holder
- Prior art date
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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7315419A NL7315419A (en) | 1973-11-10 | 1973-11-10 | DEVICE FOR READING A DISK-SHAPED REGISTRATION CARRIER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE822040A true BE822040A (en) | 1975-05-09 |
Family
ID=19819976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE150377A BE822040A (en) | 1973-11-10 | 1974-11-08 | DEVICE FOR EXPLORING A DISC-SHAPED INFORMATION HOLDER |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS5433724B2 (en) |
| AR (1) | AR204426A1 (en) |
| AT (1) | AT336298B (en) |
| BE (1) | BE822040A (en) |
| BR (1) | BR7409349A (en) |
| CA (1) | CA1055156A (en) |
| CH (1) | CH579807A5 (en) |
| DE (1) | DE2452815C2 (en) |
| DK (1) | DK135070B (en) |
| ES (1) | ES431776A1 (en) |
| FR (1) | FR2251067B1 (en) |
| GB (1) | GB1490726A (en) |
| IT (1) | IT1024778B (en) |
| NL (1) | NL7315419A (en) |
| NO (1) | NO144501C (en) |
| SE (1) | SE394335B (en) |
| ZA (1) | ZA746767B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2396379A1 (en) * | 1977-07-01 | 1979-01-26 | Thomson Brandt | OPTICAL INFORMATION DISC READER EQUIPPED WITH AN AUTOMATIC INFORMATION ACCESS DEVICE |
| NL7803517A (en) * | 1978-04-03 | 1979-10-05 | Philips Nv | RECORD CARRIER WITH AN OPTICALLY READABLE PHASE STRUCTURE AND DEVICE FOR READING. |
| JPS626580Y2 (en) * | 1979-11-17 | 1987-02-16 | ||
| NL8001974A (en) * | 1980-04-03 | 1981-11-02 | Philips Nv | TRACKING DEVICE. |
| JPS57113428A (en) * | 1980-12-29 | 1982-07-14 | Pioneer Video Corp | Focus servo device |
| NL8105346A (en) * | 1981-11-26 | 1983-06-16 | ||
| NL8105347A (en) * | 1981-11-26 | 1983-06-16 | Philips Nv | Apparatus for the optical scanning of a disc-shaped record carrier. |
| NL8200208A (en) * | 1982-01-21 | 1983-08-16 | Philips Nv | DEVICE FOR READING A DISC REGISTRATION CARRIER. |
| JPS58143472A (en) * | 1982-02-22 | 1983-08-26 | Hitachi Ltd | Tracking servo controller of recording information reproducing device |
| JPS58169350A (en) * | 1982-03-31 | 1983-10-05 | Hitachi Ltd | Optical track shift detecting system |
| GB8824888D0 (en) * | 1988-10-24 | 2002-08-14 | British Aerospace | Servo actuation systems |
-
1973
- 1973-11-10 NL NL7315419A patent/NL7315419A/en not_active Application Discontinuation
-
1974
- 1974-01-01 AR AR256416A patent/AR204426A1/en active
- 1974-10-24 ZA ZA00746767A patent/ZA746767B/en unknown
- 1974-11-04 CA CA212,960A patent/CA1055156A/en not_active Expired
- 1974-11-07 BR BR9349/74A patent/BR7409349A/en unknown
- 1974-11-07 DE DE2452815A patent/DE2452815C2/en not_active Expired
- 1974-11-07 JP JP12763274A patent/JPS5433724B2/ja not_active Expired
- 1974-11-07 GB GB48309/74A patent/GB1490726A/en not_active Expired
- 1974-11-07 DK DK580974AA patent/DK135070B/en not_active IP Right Cessation
- 1974-11-07 IT IT70277/74A patent/IT1024778B/en active
- 1974-11-07 CH CH1490774A patent/CH579807A5/xx not_active IP Right Cessation
- 1974-11-07 NO NO744015A patent/NO144501C/en unknown
- 1974-11-07 SE SE7413962A patent/SE394335B/en not_active IP Right Cessation
- 1974-11-08 ES ES431776A patent/ES431776A1/en not_active Expired
- 1974-11-08 FR FR7437019A patent/FR2251067B1/fr not_active Expired
- 1974-11-08 BE BE150377A patent/BE822040A/en not_active IP Right Cessation
- 1974-11-08 AT AT895674A patent/AT336298B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2251067B1 (en) | 1983-08-05 |
| FR2251067A1 (en) | 1975-06-06 |
| DE2452815C2 (en) | 1982-10-28 |
| NL7315419A (en) | 1975-05-13 |
| JPS5081218A (en) | 1975-07-01 |
| DK580974A (en) | 1975-07-07 |
| NO144501B (en) | 1981-06-01 |
| ZA746767B (en) | 1976-05-26 |
| ATA895674A (en) | 1976-08-15 |
| IT1024778B (en) | 1978-07-20 |
| JPS5433724B2 (en) | 1979-10-23 |
| DK135070B (en) | 1977-02-28 |
| NO744015L (en) | 1975-06-09 |
| CA1055156A (en) | 1979-05-22 |
| SE7413962L (en) | 1975-05-12 |
| ES431776A1 (en) | 1976-12-16 |
| NO144501C (en) | 1981-09-09 |
| DE2452815A1 (en) | 1975-06-26 |
| AU7515574A (en) | 1976-05-13 |
| GB1490726A (en) | 1977-11-02 |
| AR204426A1 (en) | 1976-02-06 |
| DK135070C (en) | 1977-08-01 |
| AT336298B (en) | 1977-04-25 |
| CH579807A5 (en) | 1976-09-15 |
| BR7409349A (en) | 1976-05-18 |
| SE394335B (en) | 1977-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BE825498A (en) | DEVICE FOR EXPLORING A DISC-SHAPED INFORMATION HOLDER | |
| FR2321808A1 (en) | DEVICE FOR READING A DISC-SHAPED INFORMATION CARRIER | |
| FR2287817A1 (en) | DEVICE FOR EXPLORING A DISC-SHAPED INFORMATION CARRIER | |
| AU472506B2 (en) | APPARATUS FOR READING A FLAT RECORD CARRIER c 7 | |
| BE820666A (en) | TOOL CLAMPING DEVICE | |
| JPS54154304A (en) | Information writing reading device | |
| YU36825B (en) | Device for reading a disk-like record carrier | |
| FR2182526A5 (en) | SHARPENING DEVICE | |
| BE815068A (en) | PHOTO-ELECTRIC EXPLORATION DEVICE | |
| BE814943A (en) | LEAF REMOVAL DEVICE | |
| BE822040A (en) | DEVICE FOR EXPLORING A DISC-SHAPED INFORMATION HOLDER | |
| JPS5248436A (en) | Device for adapting information reader for information medium speed | |
| BR7406234D0 (en) | HOLDER DEVICE | |
| FR2313732A1 (en) | DEVICE FOR READING A RECORD HOLDER | |
| BE808804A (en) | POSITIONING DEVICE | |
| BE842000A (en) | DEVICE FOR EXPLORING A PLATE-SHAPED INFORMATION HOLDER | |
| AT346096B (en) | RECORD CARRIER AND DEVICE FOR DESCRIBING SUCH A | |
| FR2363946B2 (en) | DEVICE FOR RECORDING OBJECTS | |
| BE820037A (en) | DATA INTRODUCTION DEVICE | |
| BE807159A (en) | DEVICE FOR EXPLORING A RECORDING HOLDER | |
| BE826027A (en) | DEVICE FOR EXPLORING A DISC-SHAPED INFORMATION CARRIER TO BE PLACED ON A TURNTABLE | |
| BE812409A (en) | CHIPS GLUING DEVICE | |
| BE822117A (en) | RECORDING DEVICE | |
| BE804329A (en) | APPARATUS ALLOWING THE EXPLORATION OF A ROTARY DISC-SHAPED INFORMATION HOLDER | |
| FR2284949A1 (en) | DEVICE FOR EXPLORING DISC-SHAPED INFORMATION CARRIERS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: PHILIPS GLOEILAMPENFABRIEKEN N.V. Effective date: 19901130 |