JP2015156636A5 - - Google Patents

Claims (2)

A transmission apparatus that multiplex-transmits a variable-length packet in a frame composed of a plurality of packet placement slots to which TS (Transport Stream) packets are allocated and one multi-frame header information slot,
Generate a third packet having the same packet length as the TS packet to be transmitted, divide the variable length packet to be transmitted, and sequentially assign the divided variable length packet data to the third packet, The same synchronization byte as that of the TS packet is added to the received data, and the head position information indicating the head position of the variable length packet is added to the data located at the head position of the variable length packet. Variable-length packet dividing means for forming a packet sequence of a third packet;
Multiplex frame header generation means for generating multiplex frame header information defining a data structure arrangement of the TS packet and the third packet in a frame having a plurality of predetermined packet placement slots;
A multiplexing unit configured to arrange and multiplex the TS packet and the third packet for each packet arrangement slot based on the multiplex frame header information, and configure a plurality of TS multiplex frames;
Transmitting means for transmitting the multiplexed signal of the plurality of TS multiplexed frames to the outside;
A transmission device comprising: Receives variable-length packet data from a multiplexed signal of multiple TS multiplexed frames in which variable-length packet data is multiplexed in a frame consisting of a plurality of packet placement slots to which TS packets are allocated and one multi-frame header information slot A receiving device,
Receiving means for receiving a multiplexed signal of the plurality of TS multiplexed frames;
Separating means for extracting and separating a third packet including data of the variable-length packet from the plurality of TS multiplexed frames with reference to the multiplexed frame header information of the plurality of TS multiplexed frames;
Extracting the head position information of the variable length packet stored in the third packet, extracting the data from the packet sequence of the third packet based on the head position information of the variable length packet, and combining the variable Variable length packet restoration means for restoring long packets;
A receiving apparatus comprising: