Patent
1974-07-03
1977-05-24
Cardillo, Raymond F.
1791003G, 1791003V, 350 35, G11B 718
Patent
active
040257312
ABSTRACT:
The present invention relates to an optical record which can contain in one and the same track, the transcription of several simultaneous signals and is designed to be read out by means of a light source; the track carried by this record is formed by fringes whose spacing varies as a function of the instantaneous amplitude of the signal being transcribed; the invention likewise describes two devices for effecting said record and a read-out device as well.
The invention is applicable in particular to stereographic sound recording.
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"Thomson-CSF"
Cardillo Raymond F.
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