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
GB10570/29A
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.)
TONFILM AKT GES DEUTSCHE
Original Assignee
TONFILM AKT GES DEUTSCHE
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 TONFILM AKT GES DEUTSCHEfiledCriticalTONFILM AKT GES DEUTSCHE
Publication of GB309183ApublicationCriticalpatent/GB309183A/en
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
Landscapes
Recording Or Reproducing By Magnetic Means
(AREA)
Camera Data Copying Or Recording
(AREA)
Abstract
309,183. Deutsche Tonfilm Akt.-Ges. April 7, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Photographic records with several traces on one surface.-Photographic sound records on films or strips and comprising two or more record traces adjacent to one another longitudinally are arranged so that a record of one selection commences at the end at which another selection terminates.. A second selection can thus be played without re-winding the film, the winding mechanism of which may be reversed automatically at the end of a selection.
GB10570/29A1928-04-071929-04-05Process for the reproduction of photographically recorded acoustic events
ExpiredGB309183A
(en)