JPS5769531A - Optical information recording method - Google Patents

Optical information recording method

Info

Publication number
JPS5769531A
JPS5769531A JP14369480A JP14369480A JPS5769531A JP S5769531 A JPS5769531 A JP S5769531A JP 14369480 A JP14369480 A JP 14369480A JP 14369480 A JP14369480 A JP 14369480A JP S5769531 A JPS5769531 A JP S5769531A
Authority
JP
Japan
Prior art keywords
recording
disc
recording method
circuit
comparator
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
JP14369480A
Other languages
Japanese (ja)
Inventor
Hideshi Kenjo
Kiichi Kato
Masaharu Sakamoto
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 Corp
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 Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP14369480A priority Critical patent/JPS5769531A/en
Publication of JPS5769531A publication Critical patent/JPS5769531A/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
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To utilize effectively the recording capacity of a recording medium and to obtain a simple, small-scale, and cheap recording method, by reading out information approximately simultaneously with recording it by one light beam. CONSTITUTION:Information to be recorded passes through a modulating circuit 29, a high-speed amplifiers 30 which has one terminal set to the read level, and a current amplifier 32 and drives a semiconductor laser 21. The beam of the semiconductor laser 21 is focused onto a disc 27 through a collimate lens 22, a beam splitter 23, a 1/4-wavelength plate 24, and an object lens 25. The reflection beam is made incident to a disc 28 through the beam splitter 23. The output is compared through an amplifier 33 with the threshold due to a resistor 35 by a comparator 34, and the difference is sent to a gate circuit 36 as a bit signal. Bit information from the comparator 34 is sampled by a gate pulse from a timing circuit 37 which is synchronized with the output of the modulating circuit 29. Thus, the recording capacity of the disc is utilized effectively to obtain a simple, small-scale, and cheap recording method.
JP14369480A 1980-10-16 1980-10-16 Optical information recording method Pending JPS5769531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14369480A JPS5769531A (en) 1980-10-16 1980-10-16 Optical information recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14369480A JPS5769531A (en) 1980-10-16 1980-10-16 Optical information recording method

Publications (1)

Publication Number Publication Date
JPS5769531A true JPS5769531A (en) 1982-04-28

Family

ID=15344784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14369480A Pending JPS5769531A (en) 1980-10-16 1980-10-16 Optical information recording method

Country Status (1)

Country Link
JP (1) JPS5769531A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295759A2 (en) * 1984-02-08 1988-12-21 Laser Magnetic Storage International Company Apparatus for using differential data detection in write protection of an optical recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0295759A2 (en) * 1984-02-08 1988-12-21 Laser Magnetic Storage International Company Apparatus for using differential data detection in write protection of an optical recorder

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