JPS5329701A - Forcussing and tracking system in optical information reading reproducer - Google Patents

Forcussing and tracking system in optical information reading reproducer

Info

Publication number
JPS5329701A
JPS5329701A JP10373976A JP10373976A JPS5329701A JP S5329701 A JPS5329701 A JP S5329701A JP 10373976 A JP10373976 A JP 10373976A JP 10373976 A JP10373976 A JP 10373976A JP S5329701 A JPS5329701 A JP S5329701A
Authority
JP
Japan
Prior art keywords
forcussing
reproducer
optical information
tracking system
information reading
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
JP10373976A
Other languages
Japanese (ja)
Inventor
Toru Musha
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP10373976A priority Critical patent/JPS5329701A/en
Publication of JPS5329701A publication Critical patent/JPS5329701A/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

Abstract

PURPOSE:In focussing and tracking contrrolling, obtaining information on track deviation is made possible by preferentially performing forcussing controlling, thereby improving control informations with a simple optical system.
JP10373976A 1976-09-01 1976-09-01 Forcussing and tracking system in optical information reading reproducer Pending JPS5329701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10373976A JPS5329701A (en) 1976-09-01 1976-09-01 Forcussing and tracking system in optical information reading reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10373976A JPS5329701A (en) 1976-09-01 1976-09-01 Forcussing and tracking system in optical information reading reproducer

Publications (1)

Publication Number Publication Date
JPS5329701A true JPS5329701A (en) 1978-03-20

Family

ID=14361981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10373976A Pending JPS5329701A (en) 1976-09-01 1976-09-01 Forcussing and tracking system in optical information reading reproducer

Country Status (1)

Country Link
JP (1) JPS5329701A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050967A1 (en) * 1980-10-25 1982-05-05 Olympus Optical Co., Ltd. Signal detection system for use in an optically operating reproducing apparatus
FR2511537A1 (en) * 1981-08-14 1983-02-18 Thomson Csf OPTICAL TRACKING DEVICE FOR SAMPLING TRACK
US4504937A (en) * 1982-01-06 1985-03-12 Hitachi, Ltd. Optical information tracking apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050967A1 (en) * 1980-10-25 1982-05-05 Olympus Optical Co., Ltd. Signal detection system for use in an optically operating reproducing apparatus
FR2511537A1 (en) * 1981-08-14 1983-02-18 Thomson Csf OPTICAL TRACKING DEVICE FOR SAMPLING TRACK
US4504937A (en) * 1982-01-06 1985-03-12 Hitachi, Ltd. Optical information tracking apparatus

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