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.)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SAfiledCriticalCompagnie Francaise Thomson Houston SA
Application grantedgrantedCritical
Publication of FR39619EpublicationCriticalpatent/FR39619E/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
FR39619D1931-01-031931-01-03Perfectionnements aux moyens d'enregistrer et de reproduire les sons
ExpiredFR39619E
(fr)
Perfectionnements à la technique de l'enregistrement électromécanique du son et à la reproduction photo-électrique de celui-ci à partir des inscriptions obtenues