FR795152A - Improvements in methods and apparatus for recording and reproducing sound films - Google Patents

Improvements in methods and apparatus for recording and reproducing sound films

Info

Publication number
FR795152A
FR795152A FR795152DA FR795152A FR 795152 A FR795152 A FR 795152A FR 795152D A FR795152D A FR 795152DA FR 795152 A FR795152 A FR 795152A
Authority
FR
France
Prior art keywords
recording
methods
reproducing sound
sound films
films
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
Gauthier
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 FR795152A publication Critical patent/FR795152A/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
FR795152D 1934-09-21 1935-09-21 Improvements in methods and apparatus for recording and reproducing sound films Expired FR795152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE795152X 1934-09-21

Publications (1)

Publication Number Publication Date
FR795152A true FR795152A (en) 1936-03-07

Family

ID=3880765

Family Applications (1)

Application Number Title Priority Date Filing Date
FR795152D Expired FR795152A (en) 1934-09-21 1935-09-21 Improvements in methods and apparatus for recording and reproducing sound films

Country Status (1)

Country Link
FR (1) FR795152A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE761671C (en) * 1940-07-10 1954-04-29 Bauer Eugen Gmbh Optical sound reproduction device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE761671C (en) * 1940-07-10 1954-04-29 Bauer Eugen Gmbh Optical sound reproduction device

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