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.)
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Julius Pintsch AG
Original Assignee
Julius Pintsch AG
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Filing date
Publication date
Application filed by Julius Pintsch AGfiledCriticalJulius Pintsch AG
Application grantedgrantedCritical
Publication of FR817697ApublicationCriticalpatent/FR817697A/fr
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
FR817697D1935-12-061936-12-05Dispositif pour l'enregistrement, la copie et la reproduction d'enregistrements sonores sur film sans fin
ExpiredFR817697A
(fr)
Dispositif pour l'enregistrement et la reproduction continus de pistes sonores photographiques parallèles aux bords d'un film en forme de bande sans fin
Dispositif pour la reproduction d'un enregistrement photo-phonographique dans lequelles demi-ondes positives et les demi-ondes négatives sont enregistrées suivant des traces sonores distinctes