NO750637L - - Google Patents
Info
- Publication number
- NO750637L NO750637L NO750637A NO750637A NO750637L NO 750637 L NO750637 L NO 750637L NO 750637 A NO750637 A NO 750637A NO 750637 A NO750637 A NO 750637A NO 750637 L NO750637 L NO 750637L
- Authority
- NO
- Norway
- Prior art keywords
- converter
- tubular body
- core
- air gap
- coil
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
-
- 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
- G11B7/0925—Electromechanical actuators for lens positioning
- G11B7/0929—Electromechanical actuators for lens positioning for tracking only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/032—Reciprocating, oscillating or vibrating motors
- H02P25/034—Voice coil motors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Moving Of Heads (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Optical Recording Or Reproduction (AREA)
- Rotational Drive Of Disk (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7402768A NL7402768A (nl) | 1974-02-28 | 1974-02-28 | Inrichting voor het schrijven en/of weergeven van informatie in respektievelijk van een draaiende schijfvormige registratiedrager. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO750637L true NO750637L (US08124317-20120228-C00038.png) | 1975-08-29 |
Family
ID=19820866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO750637A NO750637L (US08124317-20120228-C00038.png) | 1974-02-28 | 1975-02-25 |
Country Status (17)
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2611617C2 (de) * | 1976-03-19 | 1983-10-20 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Elektrisch gesteuerte Einstellvorrichtung für einen digital und analog ablenkgesteuerten Lichtstrahl |
| DE2710166C2 (de) * | 1977-03-09 | 1984-09-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Mechanisch adressierter optischer Speicher |
| 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 |
| FR2497377B1 (fr) * | 1980-12-29 | 1985-06-28 | Thomson Csf | Dispositif d'exploration optique d'un support d'information |
| 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 |
| 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 |
| US4504935A (en) * | 1983-02-14 | 1985-03-12 | U.S. Philips Corporation | Electrodynamic focus and radial slide drive for an optical disc system |
| JPS6070563A (ja) * | 1983-09-27 | 1985-04-22 | Toshiba Corp | 高密度螺旋描画装置 |
| JPS6080565U (ja) * | 1983-11-04 | 1985-06-04 | ソニー株式会社 | プレ−ヤの送り装置 |
| US4627039A (en) * | 1983-12-23 | 1986-12-02 | Magnetic Peripherals Inc. | Head positioning servo system for optical recording with coarse and fine control |
| AU580774B2 (en) * | 1984-05-16 | 1989-02-02 | Toyota Shatai Kabushiki Kaisha | Moving coil type linear motor |
| US5001694A (en) * | 1986-05-06 | 1991-03-19 | Pencom International Corp. | Tracking and focus actuator for a holographic optical head |
| DE3850165T2 (de) * | 1987-04-08 | 1994-11-10 | Nippon Telegraph & Telephone | Verfahren und Gerät zur Herstellung von Matrizen für optische Platten und optischen Platten. |
| ATE102410T1 (de) * | 1987-11-25 | 1994-03-15 | Esec Sa | Einrichtung zur durchfuehrung der zustellbewegung eines arbeitsorgans zu einer arbeitsstation. |
| JPH02187932A (ja) * | 1989-01-12 | 1990-07-24 | Olympus Optical Co Ltd | 光ビーム移動装置 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2581133A (en) * | 1950-11-02 | 1952-01-01 | Sound Apparatus Company | Graphic recorder with sliding coils |
| US3391255A (en) * | 1962-05-16 | 1968-07-02 | Minnesota Mining & Mfg | Transducing system |
| US3544980A (en) * | 1968-03-22 | 1970-12-01 | Peripheral Systems Corp | Magnetic recording disc drive with head positioning and collision avoidance apparatus |
| US3576454A (en) * | 1968-03-28 | 1971-04-27 | Ibm | Data storage accessing mechanism with moving coil motor |
| US3521092A (en) * | 1968-07-10 | 1970-07-21 | Ibm | Data storage extended stroke actuator |
| FR2126492A5 (US08124317-20120228-C00038.png) * | 1971-02-08 | 1972-10-06 | Thomson Csf | |
| NL172202C (nl) * | 1971-03-11 | 1983-07-18 | Philips Nv | Inrichting voor het uitlezen van een plaatvormige informatiedrager bevattende in optische vorm gecodeerde beeld- en/of geluidssignalen. |
-
1974
- 1974-02-28 NL NL7402768A patent/NL7402768A/xx not_active Application Discontinuation
- 1974-04-29 US US05/464,852 patent/US3969574A/en not_active Expired - Lifetime
- 1974-09-03 CH CH1192974A patent/CH586445A5/xx not_active IP Right Cessation
-
1975
- 1975-02-11 ZA ZA00750859A patent/ZA75859B/xx unknown
- 1975-02-15 DE DE19752506424 patent/DE2506424A1/de active Pending
- 1975-02-25 JP JP50022494A patent/JPS5199006A/ja active Pending
- 1975-02-25 IT IT67485/75A patent/IT1030220B/it active
- 1975-02-25 GB GB7807/75A patent/GB1501758A/en not_active Expired
- 1975-02-25 NO NO750637A patent/NO750637L/no unknown
- 1975-02-25 SE SE7502098A patent/SE7502098L/xx unknown
- 1975-02-25 DK DK72675AA patent/DK137905B/da unknown
- 1975-02-25 AT AT142875A patent/AT345010B/de not_active IP Right Cessation
- 1975-02-25 CA CA220,742A patent/CA1063723A/en not_active Expired
- 1975-02-25 BR BR1139/75A patent/BR7501139A/pt unknown
- 1975-02-26 BE BE153785A patent/BE826028A/xx unknown
- 1975-02-26 ES ES435086A patent/ES435086A1/es not_active Expired
- 1975-02-28 FR FR7506359A patent/FR2262849A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| IT1030220B (it) | 1979-03-30 |
| FR2262849A1 (US08124317-20120228-C00038.png) | 1975-09-26 |
| US3969574A (en) | 1976-07-13 |
| NL7402768A (nl) | 1975-09-01 |
| GB1501758A (en) | 1978-02-22 |
| DK137905B (da) | 1978-05-29 |
| BE826028A (fr) | 1975-08-26 |
| DK72675A (US08124317-20120228-C00038.png) | 1975-10-27 |
| AT345010B (de) | 1978-08-25 |
| DE2506424A1 (de) | 1975-10-02 |
| SE7502098L (US08124317-20120228-C00038.png) | 1975-08-29 |
| ATA142875A (de) | 1977-12-15 |
| JPS5199006A (US08124317-20120228-C00038.png) | 1976-09-01 |
| CH586445A5 (US08124317-20120228-C00038.png) | 1977-03-31 |
| ES435086A1 (es) | 1976-12-16 |
| BR7501139A (pt) | 1975-12-02 |
| ZA75859B (en) | 1976-09-29 |
| DK137905C (US08124317-20120228-C00038.png) | 1978-10-30 |
| CA1063723A (en) | 1979-10-02 |
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