Patent ID: 8542780
Filing Date: 2013-09-24
Classification: H04L

Abstract:
1. A digital broadcasting receiver, comprising: a receiver to receive a data stream including supplementary data, and known data which is a predefined signal pattern that is known to both a digital broadcasting transmitter and the digital broadcasting receiver; a demodulator to demodulate the data stream; a known data detector to detect a location of the known data from the demodulated data stream an equalizer to equalize the demodulated data stream using the known data, wherein the data stream is transmitted from a digital broadcasting transmitter comprising a Trellis encoder to reset internal memories at beginning of the known data and to perform Trellis encoding the known data using the reset internal memories, wherein the supplementary data is Reed Solomon (RS) encoded, interleaved, packet formatted and then is multiplexed with normal data in the digital broadcasting transmitter, and wherein the data stream is first Reed Solomon (RS) encoded to add a parity and is second RS encoded to regenerate a parity according to data altered by the resetting so that the parity is replaced with the regenerated parity.