IT1017235B - Dsipositivo per l esplorazione ottica di un videodisco rotante - Google Patents
Dsipositivo per l esplorazione ottica di un videodisco rotanteInfo
- Publication number
- IT1017235B IT1017235B IT25278/74A IT2527874A IT1017235B IT 1017235 B IT1017235 B IT 1017235B IT 25278/74 A IT25278/74 A IT 25278/74A IT 2527874 A IT2527874 A IT 2527874A IT 1017235 B IT1017235 B IT 1017235B
- Authority
- IT
- Italy
- Prior art keywords
- dsipositive
- video disk
- rotating video
- optical exploration
- exploration
- 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
- G11B7/0901—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
- G11B7/085—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
- G11B7/08576—Swinging-arm 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2337015A DE2337015C2 (de) | 1973-07-20 | 1973-07-20 | Vorrichtung zur optischen Abtastung einer um eine vertikale Rotationsachse sich drehenden Platte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1017235B true IT1017235B (it) | 1977-07-20 |
Family
ID=5887568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT25278/74A IT1017235B (it) | 1973-07-20 | 1974-07-17 | Dsipositivo per l esplorazione ottica di un videodisco rotante |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4004081A (it) |
| JP (1) | JPS5044803A (it) |
| AT (1) | AT336704B (it) |
| CH (1) | CH574661A5 (it) |
| DE (1) | DE2337015C2 (it) |
| FR (1) | FR2238210B1 (it) |
| GB (1) | GB1482153A (it) |
| IT (1) | IT1017235B (it) |
| NL (1) | NL7409799A (it) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL176315C (nl) * | 1976-05-12 | 1985-03-18 | Philips Nv | Optische aftastinrichting. |
| US4131921A (en) * | 1977-04-15 | 1978-12-26 | Okidata Corporation | Head positioning system for disc files |
| 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 |
| JPS56170537U (it) * | 1980-05-16 | 1981-12-16 | ||
| US4982296A (en) * | 1980-09-24 | 1991-01-01 | Quantum Corporation | Head and disk assembly for fixed disk drive |
| US4920434A (en) * | 1980-09-24 | 1990-04-24 | Quantum Corporation | Fixed disk drive |
| JPS5823030U (ja) * | 1981-07-31 | 1983-02-14 | フオスタ−電機株式会社 | 光学式ピツクアツプ装置 |
| 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. |
| JPS5862835A (ja) * | 1981-10-07 | 1983-04-14 | Sharp Corp | ピツクアツプ装置 |
| KR880000999B1 (ko) * | 1981-11-25 | 1988-06-10 | 미쓰다 가쓰시게 | 광학적 정보 기억장치 |
| US4627039A (en) * | 1983-12-23 | 1986-12-02 | Magnetic Peripherals Inc. | Head positioning servo system for optical recording with coarse and fine control |
| US4669073A (en) * | 1984-01-31 | 1987-05-26 | Matsushita Electric Industrial Co., Ltd. | Optical disk drive apparatus |
| JPS6163945A (ja) * | 1984-09-04 | 1986-04-02 | Matsushita Electric Ind Co Ltd | 光磁気デイスク装置 |
| DE3446991C1 (de) * | 1984-12-21 | 1985-07-25 | Nixdorf Computer Ag, 4790 Paderborn | Einrichtung zum Inspizieren der Oberfläche von Magnetspeicherplatten |
| US4688201A (en) * | 1985-01-16 | 1987-08-18 | Hewlett-Packard Company | Focusing and tracking apparatus for an optical data storage device |
| US4761774A (en) * | 1985-05-30 | 1988-08-02 | Matsushita Electric Industrial Co., Ltd. | Optical disc drive apparatus |
| EP0226647B1 (en) * | 1985-12-17 | 1991-05-29 | Ibm Deutschland Gmbh | Read/write head for optical disks |
| US4784447A (en) * | 1987-03-13 | 1988-11-15 | International Business Machines Corporation | Holographic objective mirror for optical storage |
| US5130871A (en) * | 1990-07-26 | 1992-07-14 | Seagate Technology, Inc. | Disk drive with rotatable diamond-shaped actuator arm |
| DE69232757T2 (de) * | 1992-01-21 | 2003-02-06 | Fujitsu Ltd., Kawasaki | Optisches Plattengerät mit reduzierten Abmessungen |
| US5432763A (en) * | 1993-03-15 | 1995-07-11 | Hewlett-Packard Company | Subminiature rotary actuator optical head |
| US5541908A (en) * | 1993-04-21 | 1996-07-30 | Maxoptix Corporation | Actuator having a minimized payload in a optical recording system |
| US5815482A (en) * | 1996-01-22 | 1998-09-29 | T Squared G, Inc. | Multibyte random access mass storage/memory system |
| US6590853B1 (en) * | 1998-03-30 | 2003-07-08 | Samsung Electronics Co., Ltd. | Swing arm driving type optical recording/reproducing apparatus |
| US6912183B2 (en) * | 2003-02-18 | 2005-06-28 | General Electric Company | High-speed optical read/write pick-up mechanisms and associated methods |
| US6956796B2 (en) * | 2003-02-18 | 2005-10-18 | General Electric Company | High-capacity optical read/write pick-up mechanism and associated methods |
| US8528686B2 (en) * | 2008-12-12 | 2013-09-10 | Steering Solutions Ip Holding Corporation | Methods and systems involving electromagnetic torsion bars |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA720963A (en) * | 1965-11-02 | J. Woodland Norman | Fibre deflection means | |
| US1917003A (en) * | 1929-01-21 | 1933-07-04 | Columbia Phono Graph Company I | Reproduction of sound records |
| US2096811A (en) * | 1935-01-05 | 1937-10-26 | Rca Corp | Sound recording apparatus |
| US3123677A (en) * | 1957-07-08 | 1964-03-03 | Magnetic recording system | |
| US3391255A (en) * | 1962-05-16 | 1968-07-02 | Minnesota Mining & Mfg | Transducing system |
| US3530258A (en) * | 1968-06-28 | 1970-09-22 | Mca Technology Inc | Video signal transducer having servo controlled flexible fiber optic track centering |
| US3829622A (en) * | 1972-10-24 | 1974-08-13 | Mca Disco Vision | Video disc player with variably biased pneumatic head |
-
1973
- 1973-07-20 DE DE2337015A patent/DE2337015C2/de not_active Expired
-
1974
- 1974-06-04 CH CH756374A patent/CH574661A5/xx not_active IP Right Cessation
- 1974-06-06 US US05/477,476 patent/US4004081A/en not_active Expired - Lifetime
- 1974-07-17 IT IT25278/74A patent/IT1017235B/it active
- 1974-07-18 JP JP49082690A patent/JPS5044803A/ja active Pending
- 1974-07-18 AT AT595674A patent/AT336704B/de not_active IP Right Cessation
- 1974-07-19 FR FR7425259A patent/FR2238210B1/fr not_active Expired
- 1974-07-19 GB GB32059/74A patent/GB1482153A/en not_active Expired
- 1974-07-19 NL NL7409799A patent/NL7409799A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CH574661A5 (it) | 1976-04-15 |
| FR2238210B1 (it) | 1978-01-27 |
| GB1482153A (en) | 1977-08-10 |
| ATA595674A (de) | 1976-09-15 |
| JPS5044803A (it) | 1975-04-22 |
| FR2238210A1 (it) | 1975-02-14 |
| NL7409799A (nl) | 1975-01-22 |
| US4004081A (en) | 1977-01-18 |
| DE2337015C2 (de) | 1983-07-14 |
| AT336704B (de) | 1977-05-25 |
| DE2337015A1 (de) | 1975-02-06 |
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