The insertion device of the television programs, 1984, on a transmission channel or diffusion and device for receiving such programmes.

摘要

The device comprises a multiplexer (10) of the first level having a serializer (44) with regular interleaving of the received bits of a plurality of inputs and for delivering a set of binary output bit rate is determined, intended to be applied to a modulator of emission, and several multiplexers (12a, 12b, 12c, 12d) of the second level providing a flow of bits corresponding to at least a program, at one of the inputs of the multiplexer of the first level, each multiplexer of the second level being constituted by a cascade arrangement of the encoders of packets (30, 32, 34), intended to receive respectively the video packets, parcels its and possibly of the packets of conditional access messages or of teletext information 11 and a circuit with a time base (42) of packets from the coders of packets, the coder of packets (30) assigned to the video encoder being preceded by an additional protection against errors.