NL7514438A - ELECTRODYNAMIC POWER TRANSMISSION DEVICE. - Google Patents

ELECTRODYNAMIC POWER TRANSMISSION DEVICE.

Info

Publication number
NL7514438A
NL7514438A NL7514438A NL7514438A NL7514438A NL 7514438 A NL7514438 A NL 7514438A NL 7514438 A NL7514438 A NL 7514438A NL 7514438 A NL7514438 A NL 7514438A NL 7514438 A NL7514438 A NL 7514438A
Authority
NL
Netherlands
Prior art keywords
power transmission
transmission device
electrodynamic power
electrodynamic
transmission
Prior art date
Application number
NL7514438A
Other languages
Dutch (nl)
Original Assignee
Thomson Brandt Sa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson Brandt Sa filed Critical Thomson Brandt Sa
Publication of NL7514438A publication Critical patent/NL7514438A/en

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
    • 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
NL7514438A 1974-12-13 1975-12-11 ELECTRODYNAMIC POWER TRANSMISSION DEVICE. NL7514438A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7441133A FR2294605A1 (en) 1974-12-13 1974-12-13 Electrodynamic transducer with movable system - designed for servo follower loop for optical reading of disc recordings (NL150676)

Publications (1)

Publication Number Publication Date
NL7514438A true NL7514438A (en) 1976-06-15

Family

ID=9146141

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7514438A NL7514438A (en) 1974-12-13 1975-12-11 ELECTRODYNAMIC POWER TRANSMISSION DEVICE.

Country Status (5)

Country Link
JP (1) JPS5187081A (en)
DE (1) DE2556112A1 (en)
FR (1) FR2294605A1 (en)
IT (1) IT1050331B (en)
NL (1) NL7514438A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474740A1 (en) * 1980-01-24 1981-07-31 Thomson Csf MOBILE CREW OF A VIDEODISK RECORDER PLAYER, AND VIDEO DEVICE RECORDER COMPRISING SUCH A CREW
NL8001617A (en) * 1980-03-19 1981-10-16 Philips Nv DEVICE FOR ELECTRODYNAMICALLY CONTROLLED SWIVING OF AN OPTICAL ELEMENT.
FR2497378B1 (en) * 1980-12-29 1985-06-28 Thomson Csf COMPENSATION DEVICE FOR IMBALANCE OF A RETURN MIRROR BELONGING TO AN OPTICAL ILLUMINATION SYSTEM OF AN INFORMATION MEDIUM
JPS57178233A (en) * 1981-04-27 1982-11-02 Sony Corp Supporting structure of optical system
JPS58179635U (en) * 1982-05-25 1983-12-01 株式会社三協精機製作所 Pickup objective lens drive device
JPS59104735A (en) * 1982-12-08 1984-06-16 Sony Corp Objective lens driver
DE3315848A1 (en) * 1983-04-30 1984-10-31 Philips Patentverwaltung Gmbh, 2000 Hamburg Actuator device on writing and reading units for constant correction of the spatial position of a writing or reading means, in particular a beam

Also Published As

Publication number Publication date
IT1050331B (en) 1981-03-10
DE2556112A1 (en) 1976-06-24
JPS5187081A (en) 1976-07-30
FR2294605A1 (en) 1976-07-09

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