Patent ID: 8219895
Filing Date: 2012-07-10
Classification: H03M,H04H,H04N

Abstract:
1. A digital television (DTV) transmitter for processing broadcast data, the DTV transmitter comprising: a pre-coder for pre-coding enhanced data for forward error correction (FEC); a packet formatter for generating enhanced data packets including the pre-coded enhanced data; a multiplexer for multiplexing the generated enhanced data packets with main data packets including main data; a randomizer for randomizing the main data in the multiplexed enhanced data packets and main data packets; a first Reed-Solomon (RS) encoder for RS-coding the enhanced data packets with a non-systematic RS encoding scheme, wherein 47th, 48th, 49th, 50th and 51st bytes in at least one of the RS-coded enhanced data packets are non-systematic parity data; a trellis encoder for trellis-encoding data in the RS-encoded enhanced data packets and initializing at least one memory included in the trellis encoder at a start of a known data sequence; a pilot inserter for adding a pilot to the trellis-encoded data and a transmission unit for transmitting the broadcast data including the trellis-encoded data.