Apparatus and method for recombining multi-protocol encapsulation (mpe) packets

A method for recombining multi-protocol encapsulation (MPE) packets, comprising the steps of:

• a) when at least one transport stream (TS) packet is buffered, reading header information of the buffered TS packet;
• b) checking a packet identifier (PID) and a payload unit start indicator (PUSI) in the header information, and storing data length information of the currently buffered TS packet when a first packet is identified by the PUSI;
• c) creating an asynchronous transfer mode (ATM) cell header and checking whether residue data corresponding to the PID exist;
• d) when the residue data do not exist in the step c), reading data of the buffered TS packet, creating an ATM adaptive layer 0 (AAL0-ATM) cell by being integrated with the created header, transporting the AAL0-ATM cell to a segmentation and reassemble (SAR) chip and simultaneously updating data length information of the currently buffered TS packet;
• e) when the residue data exist in the step c), reading the pre-stored residue data correspondingly to the PID, reading the data of the buffered TS packet as much as data insufficient for organizing a cell, creating the AAL0-ATM cell by being integrated with the created header, transporting the AAL0-ATM cell to the SAR chip and simultaneously updating the data length information of the currently buffered TS packet;
• and
• f) when the data length information of the currently buffered TS packet has a value which is not proper to organize a cell, setting up the residue data existence flag correspondingly to the PID and temporally storing the residue data length information and the buffered residue data at the same time.