Patent ID: 8861645
Filing Date: 2014-10-14
Classification: H03M,H04L,H04N

Abstract:
1. A digital broadcasting system comprising: a demodulator to demodulate a transport stream comprising normal data, additional data and a known symbol; a symbol detector to detect a location of the known symbol from the demodulated transport stream; and an equalizer to equalize the demodulated transport stream using the known symbol; wherein the additional data is error-correction encoded at a transmission end, wherein the error-correction encoding of the additional data at the transmission end comprises interleaving the additional data and convolutional encoding the additional data, wherein the error-correction-encoded additional data is multiplexed with the normal data, which is not error-correction-encoded during the error-correction encoding of the additional data, wherein, before the transport stream is received for the demodulation at the demodulator, a parity is added to the transport stream and a compatibility parity is generated to replace the parity based on the transport stream to which the parity is added and which is trellis-encoded, and wherein an output of the symbol detector is provided to the demodulator and the equalizer.