Patent ID: 7877673
Filing Date: 2011-01-25
Classification: H03M,H04N

Abstract:
1. A digital television (DTV) transmitter for processing broadcast data, the DTV transmitter comprising: a randomizer for randomizing enhanced data; a Reed Solomon (RS) frame encoder for performing at least one of error correction encoding and error detection encoding on the randomized enhanced data; a block processor for encoding the encoded enhanced data at a coding rate of 1/L, wherein L is greater than 1; a data deinterleaver for deinterleaving the enhanced data encoded at the coding rate of 1/L; an RS encoder for RS encoding the deinterleaved enhanced data, thereby adding non-systematic RS parity data to the deinterleaved enhanced data; a data interleaver for interleaving the enhanced data and the non-systematic RS parity data, wherein the non-systematic RS parity data are placed at predetermined positions within segments including the interleaved enhanced data; and a trellis encoder for trellis-encoding the interleaved data, wherein the trellis encoder is initialized at a start of at least one known data sequence.