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Convention Paper

Optical Fibre Turntable for Archive Records

Authors: Poliak, Juraj; Robert, Ph.; Goy, J.

AES Convention 92 · Paper 3239 · March 1992

Abstract

An optical fibre follows the groove. Its end point is subject to a horizontal displacement due to the groove modulation and a vertical displacement due to the surface imperfections. The basis cutting of the end point of the fibre allows a total reflection of the radiation at the fibre-air junction. The reflected radiation is transmitted by lens horizontal displacement. The Y signal is used to regulate the height of the head with respect to the record. The system plays the records as if they were new because the signal is picked up in a normally unused portion of the groove. It is possible in most circumstances to read damaged and broken records. The system works for discs as well as cylinders.

Details

Published in
AES Convention 92
AES Convention
92
Paper number
3239
Publication date
March 6, 1992
Session subject
Audio History, Preservation, and Restoration
Affiliation
Laboratoire de Metrologie, Ecole Polytechnique Ferderale de Lausanne, Lausanne, Switzerland (See document for exact affiliation information.)
Type
Convention Paper