JPH0570210B2 - - Google Patents

Info

Publication number
JPH0570210B2
JPH0570210B2 JP58068627A JP6862783A JPH0570210B2 JP H0570210 B2 JPH0570210 B2 JP H0570210B2 JP 58068627 A JP58068627 A JP 58068627A JP 6862783 A JP6862783 A JP 6862783A JP H0570210 B2 JPH0570210 B2 JP H0570210B2
Authority
JP
Japan
Prior art keywords
lens
head
optical
light
tracking
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.)
Expired - Lifetime
Application number
JP58068627A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59193550A (ja
Inventor
Hiroshi Inada
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.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP6862783A priority Critical patent/JPS59193550A/ja
Publication of JPS59193550A publication Critical patent/JPS59193550A/ja
Publication of JPH0570210B2 publication Critical patent/JPH0570210B2/ja
Granted 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP6862783A 1983-04-19 1983-04-19 光デイスクシステムにおけるトラツク追従装置 Granted JPS59193550A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6862783A JPS59193550A (ja) 1983-04-19 1983-04-19 光デイスクシステムにおけるトラツク追従装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6862783A JPS59193550A (ja) 1983-04-19 1983-04-19 光デイスクシステムにおけるトラツク追従装置

Publications (2)

Publication Number Publication Date
JPS59193550A JPS59193550A (ja) 1984-11-02
JPH0570210B2 true JPH0570210B2 (US20090163788A1-20090625-C00002.png) 1993-10-04

Family

ID=13379171

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6862783A Granted JPS59193550A (ja) 1983-04-19 1983-04-19 光デイスクシステムにおけるトラツク追従装置

Country Status (1)

Country Link
JP (1) JPS59193550A (US20090163788A1-20090625-C00002.png)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0612572B2 (ja) * 1985-03-08 1994-02-16 オリンパス光学工業株式会社 光学的情報記録再生装置
JPS6266427A (ja) * 1985-09-18 1987-03-25 Fujitsu Ltd 光デイスク装置のポジシヨナ駆動方式
JPS637521A (ja) * 1986-06-26 1988-01-13 Asahi Optical Co Ltd 光ピツクアツプ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5485003A (en) * 1977-12-20 1979-07-06 Olympus Optical Co Ltd Scanning unevenness correcting method of optical recorder-reproducer
JPS55153138A (en) * 1979-05-14 1980-11-28 Mitsubishi Electric Corp Optical pickup unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5485003A (en) * 1977-12-20 1979-07-06 Olympus Optical Co Ltd Scanning unevenness correcting method of optical recorder-reproducer
JPS55153138A (en) * 1979-05-14 1980-11-28 Mitsubishi Electric Corp Optical pickup unit

Also Published As

Publication number Publication date
JPS59193550A (ja) 1984-11-02

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