System of reproducing information from an optically readable...

Details System of reproducing information from an optically readable... System of reproducing information from an optically readable...

G - Physics

11

B

352/32.1

G11B 7/013 (2006.01) G11B 7/005 (2006.01) G11B 17/00 (2006.01) G11B 20/10 (2006.01) G11B 20/12 (2006.01)

Patent

CA 1235495

11 ABSTRACT: System for reproducing information of an optically readable record carrier, apparatus for use in said system, and record car- rier for use in said system. A Compact-Disc-Digital-Audio-System is described in which the bandwidth is reduced in order to extend the playing time, for example for the reproduction of 10 hours of speech. This is achieved without significantly modifying the existing players and without affecting the standard EFM coding, by multiplexing a plu- rality of channels in such a way that they can be reproduced con- secutively by repeatedly playing the entire CD disc.

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