Patent ID: 8111768
Filing Date: 2012-02-07
Classification: H03M,H04H,H04L,H04N

Abstract:
1. A digital broadcast transmitter, comprising: a Trellis encoder to initialize a memory and provide an initialization byte changed according to the initialization; and a Reed-Solomon (RS) parity generator to compensate a parity according to the initialization byte which is changed by the initialization, wherein the trellis encoder comprises two of MUXes, three of internal memories, and two of adders, each of the MUXes receives a stored value from two of internal memories among the three of internal memories, separately, wherein the three of internal memories are initialized when values of an initialization region in a stream are input to the two of MUXes, and the stream is changed according to the initialization of the three of internal memories, and wherein 2 symbols, that is, 4 bits, of 4 symbols derived from initialization bytes are used for trellis initialization of the Trellis encoder, and last 2 symbols, that is, 4 bits, derived from the initialization bytes are not used for the trellis initialization and are treated as symbols from a known data byte.