DEMULTIPLEXER APPARATUS, MULTIPLEXER APPARATUS, AND METHOD FOR TRANSMITTING AND RECEIVING MULTIPLE CHANNEL USING THE SAME

摘要

Provided are a demultiplexer apparatus, a multiplexer apparatus, and a method to transmit and receive a plurality of channels using the same. The demultiplexer apparatus comprises: a broadcasting data reception unit to divide a broadcasting data stream to generate N input packets; an output packet generation unit to generate (N+1) output packets by connecting a pre-header including a field for a plurality of channel transmission to each of the N input packets; and a packet distribution unit to distribute the (N+1) output packets through at least two channels. The multiplexer apparatus comprises: a packet restoration unit to detect a first field information to restore and a second field information to synchronize from the pre-header of each of the (N+1) output packets transmitted through at least two channels, and generating N restored packets using the first field information; and an output synchronization unit to synchronize an output time between the N restored packets using the second field information.