FR2493020B1 - Disque d'information, notamment disque video, a haute densite - Google Patents

Disque d'information, notamment disque video, a haute densite

Info

Publication number
FR2493020B1
FR2493020B1 FR8119834A FR8119834A FR2493020B1 FR 2493020 B1 FR2493020 B1 FR 2493020B1 FR 8119834 A FR8119834 A FR 8119834A FR 8119834 A FR8119834 A FR 8119834A FR 2493020 B1 FR2493020 B1 FR 2493020B1
Authority
FR
France
Prior art keywords
disc
high density
especially high
information
density 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
FR8119834A
Other languages
English (en)
Other versions
FR2493020A1 (fr
Inventor
Marvin John Voelker
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.)
RCA Corp
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 FR2493020A1 publication Critical patent/FR2493020A1/fr
Application granted granted Critical
Publication of FR2493020B1 publication Critical patent/FR2493020B1/fr
Expired legal-status Critical Current

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
FR8119834A 1980-10-27 1981-10-22 Disque d'information, notamment disque video, a haute densite Expired FR2493020B1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2493020A1 FR2493020A1 (fr) 1982-04-30
FR2493020B1 true FR2493020B1 (fr) 1986-04-04

Family

ID=22744295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8119834A Expired FR2493020B1 (fr) 1980-10-27 1981-10-22 Disque d'information, notamment disque video, a haute densite

Country Status (6)

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

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 (de) * 1975-02-24 1977-12-15 MCA Disco-Vision, Znc, Universal City, Calif. (V-StA.) Verfahren zum herstellen einer nachbildungsmatrize fuer informationstraeger und matrize zur bildung von videoplattenreproduktionen
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 (de) 1982-07-08
FR2493020A1 (fr) 1982-04-30
IT8124359A0 (it) 1981-10-06
JPS57109139A (en) 1982-07-07
IT1139503B (it) 1986-09-24
AT375479B (de) 1984-08-10
GB2086125B (en) 1985-08-07
ATA457281A (de) 1983-12-15
GB2086125A (en) 1982-05-06

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Legal Events

Date Code Title Description
ST Notification of lapse