Procedures for the processing of multiple television signals for transmission purposes and their reception-side processing, in particular for a distribution network, and application

摘要

To process several television signals for transmission purposes, for example for an optical waveguide cable television distribution network, the television signals are first individually digitised (AD) and in each case digitally converted into various non-overlapping frequency bands (DFU1...DFU8). The television signals thus converted are then combined by means of a logical adding stage (ADD) to form one frequency-division multiplex signal. Due to this processing, the complexity at the receiver end can be kept down. Only one D/A converter (DAG) and one channel group converter (UG') is necessary for a group of channels of television signals. IMAGE