Apparatus and method for synchronizing transport packet in ground wave digital multimedia broadcasting

A transport stream (TS) packet synchronization apparatus comprising:

• an internal deinterleaver and an internal decoder which deinterleaves and decodes a demodulated TS packet, respectively;
• a converter which converts the decoded TS packet from bits to bytes;
• a TS packet detector which detects a synchronization point of time of the converted TS packet;
• an external deinterleaver and an external decoder which deinterleaves and decodes TS packets after the synchronization point of time;
• and
• a TS packet synchronization detector which senses in real time whether the decoded TS packets in a predetermined range among the TS packets continued after the synchronized point of time are changed in synchronization due to a change of starting position of the TS packets.

A digital broadcasting system receiver comprising:

• a demodulator for demodulating a transport stream (TS) packet received from an antenna;
• a TS packet synchronization apparatus comprising:
• an internal deinterleaver and an internal decoder which deinterleaves and decodes a demodulated TS packet, respectively;
• a converter which converts the decoded TS packet from bits to bytes;
• a TS packet detector which detects a synchronization point of time of the converted TS packet;
• an external deinterleaver and an external decoder which deinterleaves and decodes TS packets after the synchronization point of time;
• and
• a TS packet synchronization detector which senses in real time whether the decoded TS packets in a predetermined range among the TS packets continued after the synchronized point of time are changed in synchronization due to a change of starting position of the TS packets;
• and
• a descrambler which descrambles and outputs data output from the packet synchronization apparatus.