FR2474740B1 - - Google Patents
Info
- Publication number
- FR2474740B1 FR2474740B1 FR8001525A FR8001525A FR2474740B1 FR 2474740 B1 FR2474740 B1 FR 2474740B1 FR 8001525 A FR8001525 A FR 8001525A FR 8001525 A FR8001525 A FR 8001525A FR 2474740 B1 FR2474740 B1 FR 2474740B1
- Authority
- FR
- France
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
-
- 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
-
- 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
- G11B7/0925—Electromechanical actuators for lens positioning
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8001525A FR2474740A1 (fr) | 1980-01-24 | 1980-01-24 | Equipage mobile d'un lecteur enregistreur de videodisque, et lecteur enregistreur de videodisque comprenant un tel equipage |
| DE8080401863T DE3067716D1 (en) | 1980-01-24 | 1980-12-24 | Mobile equipment for a video disc recording scanner and video disc recording scanner comprising such equipment |
| EP80401863A EP0033047B1 (fr) | 1980-01-24 | 1980-12-24 | Equipage mobile d'un lecteur enregistreur de vidéodisque, et lecteur enregistreur de vidéodisque comprenant un tel équipage |
| US06/226,905 US4414657A (en) | 1980-01-24 | 1981-01-21 | Moving system for a videodisk reader-recorder |
| JP854781A JPS56134327A (en) | 1980-01-24 | 1981-01-22 | Moving system for device for reading and recording video disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8001525A FR2474740A1 (fr) | 1980-01-24 | 1980-01-24 | Equipage mobile d'un lecteur enregistreur de videodisque, et lecteur enregistreur de videodisque comprenant un tel equipage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2474740A1 FR2474740A1 (fr) | 1981-07-31 |
| FR2474740B1 true FR2474740B1 (US06346242-20020212-C00066.png) | 1984-10-26 |
Family
ID=9237833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8001525A Granted FR2474740A1 (fr) | 1980-01-24 | 1980-01-24 | Equipage mobile d'un lecteur enregistreur de videodisque, et lecteur enregistreur de videodisque comprenant un tel equipage |
Country Status (5)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2474740A1 (fr) * | 1980-01-24 | 1981-07-31 | Thomson Csf | Equipage mobile d'un lecteur enregistreur de videodisque, et lecteur enregistreur de videodisque comprenant un tel equipage |
| FR2522861B1 (fr) * | 1982-03-02 | 1988-01-08 | Thomson Csf | Tete optique d'ecriture-lecture d'un disque optique et dispositif optique associe a une telle tete |
| JPS59129952A (ja) * | 1983-01-17 | 1984-07-26 | Ricoh Co Ltd | 光ピツクアツプ |
| JPS59168941A (ja) * | 1983-03-15 | 1984-09-22 | Ricoh Co Ltd | 光ピツクアツプ |
| JPS60155017U (ja) * | 1984-03-24 | 1985-10-16 | パイオニア株式会社 | 光学情報読取装置 |
| NL8500592A (nl) * | 1985-03-04 | 1986-10-01 | Philips Nv | Electro-optische inrichting. |
| US4862441A (en) * | 1986-05-27 | 1989-08-29 | Mitsubishi Denki Kabushiki Kaisha | Carriage assembly |
| US4945526A (en) * | 1988-10-18 | 1990-07-31 | Laser Magnetic Storage International Company | Actuator assembly for optical disk systems |
| US5296767A (en) * | 1991-08-15 | 1994-03-22 | Applied Magnetics Corporation | Efficient magnetic motor armatures |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3530258A (en) * | 1968-06-28 | 1970-09-22 | Mca Technology Inc | Video signal transducer having servo controlled flexible fiber optic track centering |
| FR2294605A1 (fr) * | 1974-12-13 | 1976-07-09 | Thomson Brandt | Transducteur electrodynamique |
| DE2645326C2 (de) * | 1975-10-08 | 1984-06-20 | Olympus Optical Co., Ltd., Tokio/Tokyo | Lesekopf für eine optische Lesevorrichtung |
| NL176315C (nl) * | 1976-05-12 | 1985-03-18 | Philips Nv | Optische aftastinrichting. |
| NL7608561A (nl) * | 1976-08-02 | 1978-02-06 | Philips Nv | Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur. |
| JPS6032265B2 (ja) * | 1977-04-19 | 1985-07-26 | ソニー株式会社 | 光学式再生装置の焦点制御装置 |
| JPS5826087B2 (ja) * | 1977-07-25 | 1983-05-31 | 日本ビクター株式会社 | 光学的情報記録媒体円盤の再生装置 |
| US4302830A (en) * | 1978-05-10 | 1981-11-24 | Olympus Optical Company Ltd. | Optical information reading-out apparatus |
| FR2425782B1 (fr) * | 1978-05-10 | 1988-02-12 | Olympus Optical Co | Appareil de lecture d'informations optiques |
| JPS5542369A (en) * | 1978-09-19 | 1980-03-25 | Mitsubishi Electric Corp | Pickup controller |
| FR2443734A1 (fr) * | 1978-12-08 | 1980-07-04 | Thomson Csf | Dispositif d'acces a une piste portee par un support enregistrable ou lisible optiquement et systeme optique comportant un tel dispositif |
| US4318145A (en) * | 1979-10-18 | 1982-03-02 | Burroughs Corporation | Multiple-transducer/actuator array |
| FR2474740A1 (fr) * | 1980-01-24 | 1981-07-31 | Thomson Csf | Equipage mobile d'un lecteur enregistreur de videodisque, et lecteur enregistreur de videodisque comprenant un tel equipage |
-
1980
- 1980-01-24 FR FR8001525A patent/FR2474740A1/fr active Granted
- 1980-12-24 EP EP80401863A patent/EP0033047B1/fr not_active Expired
- 1980-12-24 DE DE8080401863T patent/DE3067716D1/de not_active Expired
-
1981
- 1981-01-21 US US06/226,905 patent/US4414657A/en not_active Expired - Fee Related
- 1981-01-22 JP JP854781A patent/JPS56134327A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56134327A (en) | 1981-10-21 |
| EP0033047B1 (fr) | 1984-05-02 |
| US4414657A (en) | 1983-11-08 |
| FR2474740A1 (fr) | 1981-07-31 |
| EP0033047A1 (fr) | 1981-08-05 |
| DE3067716D1 (en) | 1984-06-07 |
| JPH02773B2 (US06346242-20020212-C00066.png) | 1990-01-09 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |