Patent ID: 8483303

Claim:
A digital broadcasting receiver, comprising: a receiver to receive input data comprising normal data and supplementary data processed to be robust against errors in the digital broadcasting transmitter in at least one field, the supplementary data comprising known data which is known previously between the digital broadcasting receiver and a digital broadcasting transmitter; and a known data detector to detect a location of the known data from the input data, wherein the input data is transmitted from the digital broadcasting transmitter comprising a Trellis encoder to perform Trellis encoding using internal memories, and initializing the internal memories according to a control signal to control the initializing when the known data is input to the Trellis encoder, and wherein the initializing initialize the internal memories according to a predetermined location of the known data in the input data, wherein the at least one field further comprises a segment sync and a field sync, wherein the supplementary data comprising the known data is deinterleaved by the digital broadcasting transmitter, 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 supplementary data of the input data so that a previous parity of the supplementary data of the input data is replaced with the regenerated parity.