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Optical Readout of Videodisc

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4 Author(s)
Bricot, C. ; Thomson-CSF Laboratoire Central de Recherches ; Lehureau, J.C. ; Puech, C. ; Le Carvennec, F.

At first sight optical readout of videosignal stored on a disc seems to be a difficult and critical task due to what is paradoxically one of its most interesting features: no mechanical contact between the readout "stylus" and the information carrying surface of the disc. Since the readout "stylus" used here is a light beam, it cannot be simply mechanically guided by a groove, the way it is accomplished, for example with conventional audio records.

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:CE-22 ,  Issue: 4 )