JPS547305A - Optical recorder-reproducer - Google Patents

Optical recorder-reproducer

Info

Publication number
JPS547305A
JPS547305A JP7299177A JP7299177A JPS547305A JP S547305 A JPS547305 A JP S547305A JP 7299177 A JP7299177 A JP 7299177A JP 7299177 A JP7299177 A JP 7299177A JP S547305 A JPS547305 A JP S547305A
Authority
JP
Japan
Prior art keywords
reproducer
optical recorder
reproducing
recording
supporting
Prior art date
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.)
Pending
Application number
JP7299177A
Other languages
Japanese (ja)
Inventor
Masanobu Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP7299177A priority Critical patent/JPS547305A/en
Publication of JPS547305A publication Critical patent/JPS547305A/en
Pending legal-status Critical Current

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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0937—Piezo-electric actuators

Abstract

PURPOSE:To perform focus controlling in recording, reproducing, etc. in a video disc highly accurately by supporting and driving an objective lens with laminated type electrostrictive elements.
JP7299177A 1977-06-20 1977-06-20 Optical recorder-reproducer Pending JPS547305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7299177A JPS547305A (en) 1977-06-20 1977-06-20 Optical recorder-reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7299177A JPS547305A (en) 1977-06-20 1977-06-20 Optical recorder-reproducer

Publications (1)

Publication Number Publication Date
JPS547305A true JPS547305A (en) 1979-01-20

Family

ID=13505369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7299177A Pending JPS547305A (en) 1977-06-20 1977-06-20 Optical recorder-reproducer

Country Status (1)

Country Link
JP (1) JPS547305A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153135A (en) * 1979-05-16 1980-11-28 Hitachi Ltd Optical recording and reproducing device
JPS57205834A (en) * 1981-06-12 1982-12-17 Matsushita Electric Ind Co Ltd Light focusing position controller
JPS6057546A (en) * 1983-09-07 1985-04-03 Seiko Epson Corp Optical head
JPS6235417U (en) * 1985-08-16 1987-03-02
JPH01109547A (en) * 1987-10-22 1989-04-26 Fuji Xerox Co Ltd Head for floating type optical information disk

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153135A (en) * 1979-05-16 1980-11-28 Hitachi Ltd Optical recording and reproducing device
JPS57205834A (en) * 1981-06-12 1982-12-17 Matsushita Electric Ind Co Ltd Light focusing position controller
JPS6057546A (en) * 1983-09-07 1985-04-03 Seiko Epson Corp Optical head
JPS6235417U (en) * 1985-08-16 1987-03-02
JPH0528570Y2 (en) * 1985-08-16 1993-07-22
JPH01109547A (en) * 1987-10-22 1989-04-26 Fuji Xerox Co Ltd Head for floating type optical information disk

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