FR54742E - Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks - Google Patents

Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks

Info

Publication number
FR54742E
FR54742E FR54742DA FR54742E FR 54742 E FR54742 E FR 54742E FR 54742D A FR54742D A FR 54742DA FR 54742 E FR54742 E FR 54742E
Authority
FR
France
Prior art keywords
tracks
engraving
exploration
sounds
reproduction
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
Other languages
French (fr)
Inventor
Jean-Marie-Achille Legrand
Gaston Chancenotte
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 filed Critical
Application granted granted Critical
Publication of FR54742E publication Critical patent/FR54742E/en
Expired legal-status Critical Current

Links

Classifications

    • 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
FR54742D 1946-04-30 1946-04-30 Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks Expired FR54742E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR54742T 1946-04-30

Publications (1)

Publication Number Publication Date
FR54742E true FR54742E (en) 1950-07-28

Family

ID=8689164

Family Applications (1)

Application Number Title Priority Date Filing Date
FR54742D Expired FR54742E (en) 1946-04-30 1946-04-30 Method and devices for the engraving of sound tracks on a magnetic medium and for the reproduction of sounds by exploration of said tracks

Country Status (1)

Country Link
FR (1) FR54742E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2130505A1 (en) * 1971-03-22 1972-11-03 Rca Corp Information recordings and recording and reproducing systems therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2130505A1 (en) * 1971-03-22 1972-11-03 Rca Corp Information recordings and recording and reproducing systems therefor

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