Patent ID: 8160171
Filing Date: 2012-04-17
Classification: H03M,H04H,H04L,H04N

Abstract:
1. A digital television (DTV) transmitter comprising: a first encoder for convolutional encoding enhanced data at a coding rate of 1/N, wherein N is greater than 1; a deinterleaver for deinterleaving the convolutional encoded enhanced data; a second encoder for Reed Solomon (RS) encoding the deinterleaved enhanced data by adding first parity data to the deinterleaved enhanced data; an interleaver for interleaving the RS-encoded enhanced data; a third encoder for trellis encoding the interleaved enhanced data and known data sequences, wherein at least one memory in the third encoder is initialized by initialization data at a start of each known data sequence; a compatible processor for calculating second parity data based on the initialization data, replacing corresponding first parity data with the second parity data and outputting the replaced second parity data to the third encoder; a multiplexer for multiplexing the trellis encoded data with segment synchronization data and field synchronization data; and a modulator for modulating a broadcast signal including the multiplexed data.