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IT1139503B - HIGH DENSITY INFORMATION SUPPORT DISCS - Google Patents

HIGH DENSITY INFORMATION SUPPORT DISCS

Info

Publication number
IT1139503B
IT1139503B IT24359/81A IT2435981A IT1139503B IT 1139503 B IT1139503 B IT 1139503B IT 24359/81 A IT24359/81 A IT 24359/81A IT 2435981 A IT2435981 A IT 2435981A IT 1139503 B IT1139503 B IT 1139503B
Authority
IT
Italy
Prior art keywords
high density
density information
information support
support discs
discs
Prior art date
Application number
IT24359/81A
Other languages
Italian (it)
Other versions
IT8124359A0 (en
Inventor
Marvin John Voelker
Original Assignee
Rca 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 Rca Corp filed Critical Rca Corp
Publication of IT8124359A0 publication Critical patent/IT8124359A0/en
Application granted granted Critical
Publication of IT1139503B publication Critical patent/IT1139503B/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
    • G11B9/061—Record carriers characterised by their structure or form or by the selection of the material; Apparatus or processes specially adapted for the manufacture of record carriers
IT24359/81A 1980-10-27 1981-10-06 HIGH DENSITY INFORMATION SUPPORT DISCS IT1139503B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20105680A 1980-10-27 1980-10-27

Publications (2)

Publication Number Publication Date
IT8124359A0 IT8124359A0 (en) 1981-10-06
IT1139503B true IT1139503B (en) 1986-09-24

Family

ID=22744295

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24359/81A IT1139503B (en) 1980-10-27 1981-10-06 HIGH DENSITY INFORMATION SUPPORT DISCS

Country Status (6)

Country Link
JP (1) JPS57109139A (en)
AT (1) AT375479B (en)
DE (1) DE3141545A1 (en)
FR (1) FR2493020B1 (en)
GB (1) GB2086125B (en)
IT (1) IT1139503B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842194A (en) * 1971-03-22 1974-10-15 Rca Corp Information records and recording/playback systems therefor
GB1417708A (en) * 1972-04-19 1975-12-17 Rca Corp Electron beam recording
DE2603888B2 (en) * 1975-02-24 1977-12-15 MCA Disco-Vision, Znc, Universal City, Calif. (V-StA.) Process for the production of a replica die for information carrier and die for the formation of video disc reproduction
US4241120A (en) * 1978-11-13 1980-12-23 Rca Corporation Video discs and molding compositions therefor
US4228050A (en) * 1979-01-15 1980-10-14 Rca Corporation Conductive molding composition
US4472337A (en) * 1979-11-07 1984-09-18 Rca Corporation Video disc processing

Also Published As

Publication number Publication date
DE3141545A1 (en) 1982-07-08
IT8124359A0 (en) 1981-10-06
GB2086125A (en) 1982-05-06
AT375479B (en) 1984-08-10
GB2086125B (en) 1985-08-07
JPS57109139A (en) 1982-07-07
ATA457281A (en) 1983-12-15
FR2493020A1 (en) 1982-04-30
FR2493020B1 (en) 1986-04-04

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