Patent ID: 8514981

Claim:
A digital broadcasting receiver, comprising: a receiver for receiving input data comprising normal data and supplementary data in at least one field, the supplementary data comprising known data which is previously known by the digital broadcasting receiver and a digital broadcasting transmitter; a demodulator for demodulating the input data; a known data detector for detecting information regarding the known data from the demodulated data; and an equalizer for equalizing the demodulated data using the known data, wherein the at least one field further comprises a segment sync and a field sync, wherein the supplementary data have been processed at the digital broadcasting transmitter to be more robust against error than the normal data, wherein the supplementary data comprising the known data is deinterleaved at the digital broadcasting transmitter, and trellis encoded at a Trellis encoder of the digital broadcasting transmitter such that internal memories of the Trellis encoder are initialized at a beginning point of the known data, and wherein the known data is altered at the digital broadcasting transmitter according to the initialization of the internal memories of the Trellis encoder and used to regenerate a parity of the input data so that a previous parity of the input data is replaced with the regenerated parity.