Digital broadcasting transmitter, turbo stream processing method thereof, and digital broadcasting system having the same

A digital broadcast receiver, comprising:

• a demodulator to demodulate an additional data stream if a transport stream (TS) comprising a normal data stream and the additional data stream is received;
• an equalizer to equalize the TS;
• a turbo decoder to decode the additional data stream of the TS in order to correct errors in the additional data stream;
• a first processor to process the normal data stream of the TS and recover normal data;
• and
• a second processor to process the additional data stream of the TS and recover additional data,
• wherein the normal data stream and the additional data stream are compressed in different compression formats,
• wherein the turbo decoder inserts the decoded additional data stream into the TS to reconstruct the TS, and
• wherein the second processor comprises:
• the turbo decoder;
• a second deinterleaver to deinterleave the reconstructed TS;
• a parity eliminator to remove a parity from the deinterleaved TS;
• and
• a second derandomizer to derandomize the parity-removed TS.

A stream processing method of a digital broadcast receiver, comprising:

• receiving a transport stream (TS) comprising a normal data stream and an additional data stream from a digital broadcast transmitter;
• demodulating the additional data stream of the TS;
• and
• equalizing the TS;
• and
• decoding the additional data stream of the TS in order to correct errors in the additional data stream,
• wherein the normal data stream and the additional data stream are compressed in different compression formats, and
• the additional data stream is processed robustly,
• wherein the digital broadcast transmitter comprises a placeholder maker for inserting a placeholder for RS parity into the additional data stream.

A stream processing method of a digital broadcast receiver, comprising:

• receiving a transport stream (TS) comprising a normal data stream and an additional data stream;
• demodulating the additional data stream of the TS;
• and
• equalizing the TS;
• decoding the additional data stream of the TS in order to correct errors in the additional data stream;
• processing the normal data stream of the TS and recovering normal data;
• and
• processing the additional data stream of the TS and recovering additional data,
• wherein the normal data stream and the additional data stream are compressed in different compression formats, and
• wherein the processing of the additional data stream comprises:
• decoding the additional data stream of the TS in order to correct errors in the additional data stream;
• inserting the decoded additional data stream into the TS to reconstruct the TS;
• deinterleaving the reconstructed TS;
• removing a parity from the deinterleaved TS;
• and
• derandomizing the parity-removed TS.