JPS52135613A - Information recording media - Google Patents

Information recording media

Info

Publication number
JPS52135613A
JPS52135613A JP5307476A JP5307476A JPS52135613A JP S52135613 A JPS52135613 A JP S52135613A JP 5307476 A JP5307476 A JP 5307476A JP 5307476 A JP5307476 A JP 5307476A JP S52135613 A JPS52135613 A JP S52135613A
Authority
JP
Japan
Prior art keywords
information recording
recording media
layer
track
signal
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
JP5307476A
Other languages
Japanese (ja)
Inventor
Chisato Miyaoka
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 JP5307476A priority Critical patent/JPS52135613A/en
Publication of JPS52135613A publication Critical patent/JPS52135613A/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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To protect the signal recording surface by forming the first and second track between the intermediate layer and the first and second transparent layer, and to reproduce the recording signal from the first and second layer by detecting the refrection beam from the first and second information track.
JP5307476A 1976-05-10 1976-05-10 Information recording media Pending JPS52135613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5307476A JPS52135613A (en) 1976-05-10 1976-05-10 Information recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5307476A JPS52135613A (en) 1976-05-10 1976-05-10 Information recording media

Publications (1)

Publication Number Publication Date
JPS52135613A true JPS52135613A (en) 1977-11-12

Family

ID=12932653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5307476A Pending JPS52135613A (en) 1976-05-10 1976-05-10 Information recording media

Country Status (1)

Country Link
JP (1) JPS52135613A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586537A (en) * 1981-07-01 1983-01-14 Pioneer Electronic Corp Optical disc
JPS5974534U (en) * 1982-11-10 1984-05-21 パイオニア株式会社 optical disc
JPS61111039U (en) * 1985-10-25 1986-07-14
JPS61210544A (en) * 1985-03-15 1986-09-18 Dainippon Printing Co Ltd Optical card
JPH06282891A (en) * 1993-12-27 1994-10-07 Sharp Corp Magneto-optical memory cell
WO1996030906A1 (en) * 1995-03-30 1996-10-03 Victor Company Of Japan, Ltd. Information recording disk

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586537A (en) * 1981-07-01 1983-01-14 Pioneer Electronic Corp Optical disc
JPH0416863B2 (en) * 1981-07-01 1992-03-25 Pioneer Electronic Corp
JPS5974534U (en) * 1982-11-10 1984-05-21 パイオニア株式会社 optical disc
JPS61210544A (en) * 1985-03-15 1986-09-18 Dainippon Printing Co Ltd Optical card
JPS61111039U (en) * 1985-10-25 1986-07-14
JPH06282891A (en) * 1993-12-27 1994-10-07 Sharp Corp Magneto-optical memory cell
WO1996030906A1 (en) * 1995-03-30 1996-10-03 Victor Company Of Japan, Ltd. Information recording disk
US6038208A (en) * 1995-03-30 2000-03-14 Victor Company Of Japan, Ltd. Information recording disc recorded with signals at two different recording densities

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