AU545510B2 - Video discs - Google Patents

Video discs

Info

Publication number
AU545510B2
AU545510B2 AU73013/81A AU7301381A AU545510B2 AU 545510 B2 AU545510 B2 AU 545510B2 AU 73013/81 A AU73013/81 A AU 73013/81A AU 7301381 A AU7301381 A AU 7301381A AU 545510 B2 AU545510 B2 AU 545510B2
Authority
AU
Australia
Prior art keywords
video discs
discs
video
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
Application number
AU73013/81A
Other versions
AU7301381A (en
Inventor
Richard L. Wilkinson
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.)
Discovision Associates
Original Assignee
Discovision Associates
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 Discovision Associates filed Critical Discovision Associates
Priority to AU73013/81A priority Critical patent/AU545510B2/en
Publication of AU7301381A publication Critical patent/AU7301381A/en
Application granted granted Critical
Publication of AU545510B2 publication Critical patent/AU545510B2/en
Anticipated expiration legal-status Critical
Expired 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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
AU73013/81A 1980-08-11 1981-07-15 Video discs Expired AU545510B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU73013/81A AU545510B2 (en) 1980-08-11 1981-07-15 Video discs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US176743 1980-08-11
AU73013/81A AU545510B2 (en) 1980-08-11 1981-07-15 Video discs

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
AU70866/81A Division AU539526B2 (en) 1980-08-11 1981-05-20 Forming video discs

Publications (2)

Publication Number Publication Date
AU7301381A AU7301381A (en) 1982-02-18
AU545510B2 true AU545510B2 (en) 1985-07-18

Family

ID=3755505

Family Applications (1)

Application Number Title Priority Date Filing Date
AU73013/81A Expired AU545510B2 (en) 1980-08-11 1981-07-15 Video discs

Country Status (1)

Country Link
AU (1) AU545510B2 (en)

Also Published As

Publication number Publication date
AU7301381A (en) 1982-02-18

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired