IT1122792B - Apparato di lettura di un elemento di supporto di informazioni sotto forma di disco - Google Patents
Apparato di lettura di un elemento di supporto di informazioni sotto forma di discoInfo
- Publication number
- IT1122792B IT1122792B IT25156/79A IT2515679A IT1122792B IT 1122792 B IT1122792 B IT 1122792B IT 25156/79 A IT25156/79 A IT 25156/79A IT 2515679 A IT2515679 A IT 2515679A IT 1122792 B IT1122792 B IT 1122792B
- Authority
- IT
- Italy
- Prior art keywords
- disc
- reading apparatus
- information support
- information
- support
- 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
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/083—Access to indexed tracks or parts of continuous track on discs
- G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
-
- 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
- G11B7/0946—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 |
|---|---|---|---|
| NL7808638A NL7808638A (nl) | 1978-08-22 | 1978-08-22 | Inrichting voor het uitlezen van een schijfvormige re- gistratiedrager. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7925156A0 IT7925156A0 (it) | 1979-08-17 |
| IT1122792B true IT1122792B (it) | 1986-04-23 |
Family
ID=19831414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT25156/79A IT1122792B (it) | 1978-08-22 | 1979-08-17 | Apparato di lettura di un elemento di supporto di informazioni sotto forma di disco |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US4239942A (it) |
| JP (1) | JPS5528600A (it) |
| AR (1) | AR216608A1 (it) |
| AT (1) | AT371269B (it) |
| AU (1) | AU526416B2 (it) |
| BE (1) | BE878327A (it) |
| BR (1) | BR7905360A (it) |
| CA (1) | CA1145039A (it) |
| CH (1) | CH638918A5 (it) |
| DE (1) | DE2933138A1 (it) |
| DK (1) | DK345679A (it) |
| ES (1) | ES483498A1 (it) |
| FR (1) | FR2434457B1 (it) |
| GB (1) | GB2029051B (it) |
| IT (1) | IT1122792B (it) |
| NL (1) | NL7808638A (it) |
| NZ (1) | NZ191353A (it) |
| SE (1) | SE7906915L (it) |
Families Citing this family (48)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6048809B2 (ja) * | 1979-10-16 | 1985-10-29 | パイオニアビデオ株式会社 | 情報読取装置におけるトラッキングサ−ボ引込装置 |
| JPS5720927A (en) * | 1980-07-09 | 1982-02-03 | Olympus Optical Co Ltd | Objective lens driver |
| JPS5736479A (en) * | 1980-07-29 | 1982-02-27 | Victor Co Of Japan Ltd | Automatic program searching playback device in playback device |
| JPS5753838A (en) * | 1980-09-17 | 1982-03-31 | Olympus Optical Co Ltd | Beam position detecting system for recorder and reproducer of optical disk |
| US4490635A (en) * | 1980-09-24 | 1984-12-25 | Quantum Corporation | Pure torque, limited displacement transducer |
| US4396959A (en) * | 1980-09-24 | 1983-08-02 | Quantum Corporation | Data transducer position control system for rotating disk data storage equipment |
| JPS5787371U (it) * | 1980-11-17 | 1982-05-29 | ||
| JPS6319967Y2 (it) * | 1981-02-16 | 1988-06-03 | ||
| JPS57141030A (en) * | 1981-02-25 | 1982-09-01 | Matsushita Electric Ind Co Ltd | Optical recording of reproducing or reproducing device |
| US4406000A (en) * | 1981-03-31 | 1983-09-20 | Discovision Associates | Tracking system for optical record medium |
| JPS5830968U (ja) * | 1981-08-20 | 1983-02-28 | パイオニア株式会社 | 回動型アクチユエ−タ |
| NL8103960A (nl) * | 1981-08-26 | 1983-03-16 | Philips Nv | Zwenkarminrichting voor een optische aftasteenheid. |
| FR2522860B1 (fr) * | 1982-03-02 | 1989-07-13 | Thomson Csf | Tete optique d'ecriture-lecture d'un disque optique et dispositif optique associe a une telle tete |
| 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 |
| US4519056A (en) * | 1982-03-15 | 1985-05-21 | Tokyo Shibaura Denki Kabushiki Kaisha | Optical disk apparatus |
| JPS58189842A (ja) * | 1982-04-30 | 1983-11-05 | Toshiba Corp | 光学式デジタルデイスクプレ−ヤ装置 |
| JPS58200473A (ja) * | 1982-05-19 | 1983-11-22 | Pioneer Video Kk | 情報読取装置 |
| JPS592240A (ja) * | 1982-06-25 | 1984-01-07 | Pioneer Electronic Corp | トラツキングサ−ボ装置 |
| JPS5938936A (ja) * | 1982-08-28 | 1984-03-03 | Sony Corp | 情報再生装置のサ−ボコントロ−ル回路 |
| DE3374967D1 (en) * | 1982-09-15 | 1988-01-28 | Ampex | Improved bang-bang controlled velocity command generator |
| JPS5972685A (ja) * | 1982-10-20 | 1984-04-24 | Hitachi Ltd | ビデオデイスクプレ−ヤ |
| US4587644A (en) * | 1982-11-11 | 1986-05-06 | Sony Corporation | Tracking servocontrol circuits for reducing gain to avoid tracking defect in an optical reproducing apparatus |
| US4527265A (en) * | 1983-06-30 | 1985-07-02 | Staar S. A. | Position memory for laser reproduction unit |
| GB2142465B (en) * | 1983-06-30 | 1986-12-03 | Staar Sa | Position memory for laser reproduction unit |
| DE3324861C2 (de) * | 1983-07-09 | 1986-02-13 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Lesevorrichtung zum optischen Abtasten von auf einem bewegten plattenförmigen Träger aufgezeichneten Informationen |
| NL8303562A (nl) * | 1983-10-17 | 1985-05-17 | Philips Nv | Inrichting voor het weergeven van informatie van een optisch uitleesbare registratiedrager. |
| NL8303565A (nl) * | 1983-10-17 | 1985-05-17 | Philips Nv | Inrichting voor het weergeven van informatie van een plaatvormige optisch uitleesbare registratiedrager. |
| US4544969A (en) * | 1983-11-21 | 1985-10-01 | Eastman Kodak Company | Servomechanism for disc player |
| US4627039A (en) * | 1983-12-23 | 1986-12-02 | Magnetic Peripherals Inc. | Head positioning servo system for optical recording with coarse and fine control |
| JPS60123763U (ja) * | 1984-01-30 | 1985-08-21 | パイオニア株式会社 | 記録情報再生装置 |
| US4604739A (en) * | 1984-04-16 | 1986-08-05 | International Business Machines Corporation | Optical focus detection employing rotated interference patterns |
| DE3546773C2 (de) * | 1984-04-27 | 1998-10-08 | Pioneer Electronic Corp | Optischer Plattenspieler |
| DE3515472A1 (de) | 1984-04-27 | 1985-11-07 | Pioneer Electronic Corp., Tokio/Tokyo | Automatischer plattenspieler |
| JPS613564U (ja) * | 1984-06-06 | 1986-01-10 | アルプス電気株式会社 | デイスクプレ−ヤ |
| US4779253A (en) * | 1985-07-30 | 1988-10-18 | Laser Magnetic Storage International Company | Sampled servo for an optical disk drive |
| EP0214529B1 (de) * | 1985-08-27 | 1991-01-02 | Siemens Aktiengesellschaft | Positioniereinrichtung für einen optischen Datenspeicher |
| KR910003458B1 (ko) * | 1986-12-02 | 1991-05-31 | 미쓰비시뎅끼 가부시끼가이샤 | 광디스크의 구동장치 |
| US5285431A (en) * | 1987-12-02 | 1994-02-08 | Mitsubishi Denki Kabushiki Kaisha | Information storage device with head position detection outside a user utilizable region and an optical disk drive device having target velocity-controlled head actuation |
| DE3732899A1 (de) * | 1987-09-30 | 1989-04-20 | Thomson Brandt Gmbh | Spurregelkreis fuer eine optische abtastvorrichtung |
| JPH01173324A (ja) * | 1987-12-28 | 1989-07-10 | Toshiba Corp | 情報処理装置 |
| JPH01173325A (ja) * | 1987-12-26 | 1989-07-10 | Toshiba Corp | 情報処理装置 |
| US5003524A (en) * | 1987-12-26 | 1991-03-26 | Kabushiki Kaisha Toshiba | Optical disk drive with an accurately positioned objective lens |
| US5446716A (en) * | 1994-01-10 | 1995-08-29 | Eastman Kodak Company | Laser power control in an optical recording system to compensate for multiple system degradations |
| US5590102A (en) * | 1995-01-12 | 1996-12-31 | Discovision Associates | Recording informatioin on an optical disc without using pre-manufactured tracks |
| US5978329A (en) * | 1995-06-07 | 1999-11-02 | Discovision Associates | Technique for closed loop servo operation in optical disc tracking control |
| ES2112224T1 (es) * | 1995-12-06 | 1998-04-01 | Discovision Ass | Aparato y metodo para control de foco. |
| US5689485A (en) * | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
| CN101441876B (zh) | 2005-03-17 | 2011-10-05 | 松下电器产业株式会社 | 光盘装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3381086A (en) * | 1962-08-16 | 1968-04-30 | Minnesota Mining & Mfg | Reproduction of television signals from photographic disc recordings |
| US3812533A (en) * | 1972-12-22 | 1974-05-21 | Vermont Res Corp | Information storage unit transducer positioning system |
| GB1577133A (en) * | 1976-03-19 | 1980-10-22 | Rca Corp | Video information record and playback apparatus |
| US4151566A (en) * | 1977-11-29 | 1979-04-24 | Rca Corporation | Magnetic tape position measuring system |
-
1978
- 1978-08-22 NL NL7808638A patent/NL7808638A/nl not_active Application Discontinuation
- 1978-12-26 US US05/973,273 patent/US4239942A/en not_active Expired - Lifetime
-
1979
- 1979-07-19 AR AR277378A patent/AR216608A1/es active
- 1979-08-16 CA CA000333921A patent/CA1145039A/en not_active Expired
- 1979-08-16 DE DE19792933138 patent/DE2933138A1/de active Granted
- 1979-08-17 IT IT25156/79A patent/IT1122792B/it active
- 1979-08-17 GB GB7928728A patent/GB2029051B/en not_active Expired
- 1979-08-17 DK DK345679A patent/DK345679A/da not_active Application Discontinuation
- 1979-08-17 AT AT0559179A patent/AT371269B/de not_active IP Right Cessation
- 1979-08-20 NZ NZ191353A patent/NZ191353A/xx unknown
- 1979-08-20 CH CH759279A patent/CH638918A5/de not_active IP Right Cessation
- 1979-08-20 ES ES483498A patent/ES483498A1/es not_active Expired
- 1979-08-20 BR BR7905360A patent/BR7905360A/pt unknown
- 1979-08-20 FR FR7920978A patent/FR2434457B1/fr not_active Expired
- 1979-08-20 AU AU50105/79A patent/AU526416B2/en not_active Ceased
- 1979-08-20 SE SE7906915A patent/SE7906915L/ not_active Application Discontinuation
- 1979-08-20 BE BE0/196801A patent/BE878327A/fr not_active IP Right Cessation
- 1979-08-22 JP JP10614179A patent/JPS5528600A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2933138A1 (de) | 1980-03-06 |
| DK345679A (da) | 1980-02-23 |
| FR2434457B1 (fr) | 1986-07-25 |
| GB2029051A (en) | 1980-03-12 |
| AT371269B (de) | 1983-06-10 |
| IT7925156A0 (it) | 1979-08-17 |
| ES483498A1 (es) | 1980-04-01 |
| CH638918A5 (de) | 1983-10-14 |
| NZ191353A (en) | 1982-06-29 |
| BE878327A (fr) | 1980-02-20 |
| JPS5528600A (en) | 1980-02-29 |
| ATA559179A (de) | 1982-10-15 |
| DE2933138C2 (it) | 1989-03-30 |
| CA1145039A (en) | 1983-04-19 |
| NL7808638A (nl) | 1980-02-26 |
| AU5010579A (en) | 1980-02-28 |
| US4239942A (en) | 1980-12-16 |
| AU526416B2 (en) | 1983-01-06 |
| FR2434457A1 (fr) | 1980-03-21 |
| SE7906915L (sv) | 1980-02-23 |
| GB2029051B (en) | 1982-10-13 |
| JPS616460B2 (it) | 1986-02-26 |
| AR216608A1 (es) | 1979-12-28 |
| BR7905360A (pt) | 1980-05-20 |
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