Patent ID: 8149951
Filing Date: 2012-04-03
Classification: H03M,H04H,H04L,Y02D

Abstract:
1. A broadcast transmitting system comprising: a Reed-Solomon (RS) frame encoder for RS encoding and Cyclic Redundancy Check (CRC) encoding mobile service data to build an RS frame including the mobile service data, dividing the built RS frame into RS frame portions and adding K bytes of dummy data to one of the RS frame portions, wherein K is greater than or equal to zero; a group formatter for mapping one of the RS frame portions into at least one region of a data group that has a plurality of regions and adding a plurality of known data sequences, signaling information and Moving Picture Experts Group (MPEG) header data place holders to the data group, wherein at least two of the plurality of known data sequences have different lengths, and wherein at least two of the plurality of known data sequences are spaced 16 segments apart; a packet formatter for replacing the MPEG header data place holders with MPEG header data, in order to output mobile service data packets; a multiplexer for multiplexing the mobile service data packets and main service data packets, the main service data packets including main service data; and a trellis encoding module for trellis encoding data in the multiplexed data packets, wherein at least one memory in the trellis encoding module is initialized at a start of at least one of the plurality of known data sequences.