Patent ID: 8306158

Claim:
A digital broadcasting receiver, comprising: a receiver to receive a data stream including a sync signal, known data different from the sync signal and a supplementary data stream, the supplementary data stream is processed to be robust against errors in a digital broadcasting transmitter; a demodulator to demodulate the data stream; a known data detector to detect a location of the known data from the demodulated data stream, the known data being a predefined signal pattern that is known to both the digital broadcasting transmitter and the digital broadcasting receiver; and an equalizer to equalize the demodulated data stream using the known data, wherein the data stream is transmitted from the digital broadcasting transmitter which includes a Trellis encoder for performing Trellis encoding using internal memories, and which resets the internal memories at a predetermined point, and a parity restructuring part for receiving the known data altered according to the resetting, and which regenerates a new parity based on the altered known data and inputs the new parity to the Trellis encoder so that Trellis encoder replaces a previous parity with the new parity.