Patent ID: 8619878

Claim:
A digital broadcast transmitter comprising: a transversal Reed-Solomon (TRS) encoder to perform Reed-Solomon (RS) encoding in a column direction on a transport stream comprising payload; a known data inserting unit to insert known data into the transport stream; an RS encoder to add an RS parity to the transport stream into which the known data are inserted; a Trellis encoder to perform Trellis encoding on the transport stream including the known data and initialize an internal memory used to perform the Trellis encoding to a predetermined value at a beginning point of the known data input to the Trellis encoder, and; a parity replacing unit to regenerate an RS parity according to the initialization of the internal memory of the Trellis encoder so that the added RS parity is replaced with the regenerated RS parity; and a multiplexer to insert a field sync and a segment sync into the transport stream, wherein the known data is different from the payload data, the field sync and the segment sync, and is used as an additional reference in equalization at a digital broadcast receiver, wherein the known data is predefined between the digital broadcast transmitter and a digital broadcast receiver of the transport stream.