FR38556E - Improvement in sound recording - Google Patents

Improvement in sound recording

Info

Publication number
FR38556E
FR38556E FR38556DA FR38556E FR 38556 E FR38556 E FR 38556E FR 38556D A FR38556D A FR 38556DA FR 38556 E FR38556 E FR 38556E
Authority
FR
France
Prior art keywords
improvement
sound recording
sound
recording
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
Jacques-Georges-Char Brillouin
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 FR38556E publication Critical patent/FR38556E/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
    • 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
    • G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers
FR38556D 1930-05-20 1930-05-20 Improvement in sound recording Expired FR38556E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR38556T 1930-05-20

Publications (1)

Publication Number Publication Date
FR38556E true FR38556E (en) 1931-06-15

Family

ID=8675034

Family Applications (1)

Application Number Title Priority Date Filing Date
FR38556D Expired FR38556E (en) 1930-05-20 1930-05-20 Improvement in sound recording

Country Status (1)

Country Link
FR (1) FR38556E (en)

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