JPS5778648A - Optical recording method - Google Patents

Optical recording method

Info

Publication number
JPS5778648A
JPS5778648A JP55155305A JP15530580A JPS5778648A JP S5778648 A JPS5778648 A JP S5778648A JP 55155305 A JP55155305 A JP 55155305A JP 15530580 A JP15530580 A JP 15530580A JP S5778648 A JPS5778648 A JP S5778648A
Authority
JP
Japan
Prior art keywords
laser
tracking
recording
signal
helium cadmium
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
JP55155305A
Other languages
Japanese (ja)
Inventor
Ichiro Ueno
Kanji Kayanuma
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP55155305A priority Critical patent/JPS5778648A/en
Publication of JPS5778648A publication Critical patent/JPS5778648A/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

Landscapes

  • Optical Head (AREA)

Abstract

PURPOSE:To prevent a tracking pit from being omitted, by using an argon laser for a signal and a helium cadmium laser for a tracking groove, respectively. CONSTITUTION:A light source 1 is an argon laser, and a light source 2 is a helium cadmium laser. The argon laser is used for recording an information signal, and the helium cadmium laser which has a lot of noises and a small laser output, but causes no temporary drop nor stop of the laser output in the course of its use is used for recording a tracking signal, by which it is prevented that a tracking control signal becomes in a non-recording state.
JP55155305A 1980-11-05 1980-11-05 Optical recording method Pending JPS5778648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55155305A JPS5778648A (en) 1980-11-05 1980-11-05 Optical recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55155305A JPS5778648A (en) 1980-11-05 1980-11-05 Optical recording method

Publications (1)

Publication Number Publication Date
JPS5778648A true JPS5778648A (en) 1982-05-17

Family

ID=15602990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55155305A Pending JPS5778648A (en) 1980-11-05 1980-11-05 Optical recording method

Country Status (1)

Country Link
JP (1) JPS5778648A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101734A (en) * 1983-11-07 1985-06-05 Fujitsu Ltd Optical head
JPS61192038A (en) * 1985-02-20 1986-08-26 Matsushita Electric Ind Co Ltd Optical information recorder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101734A (en) * 1983-11-07 1985-06-05 Fujitsu Ltd Optical head
JPH0156455B2 (en) * 1983-11-07 1989-11-30 Fujitsu Ltd
JPS61192038A (en) * 1985-02-20 1986-08-26 Matsushita Electric Ind Co Ltd Optical information recorder

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