Patent ID: 8135038
Filing Date: 2012-03-13
Classification: H03M,H04L,H04N

Abstract:
1. A method of processing broadcast data for a broadcast receiver, the method comprising: receiving a broadcast signal comprising data groups, wherein each of the data groups is divided into data blocks that comprise mobile service data, fast information channel (FIC) data, transmission parameter channel (TPC) data, and known data sequences, wherein the FIC data comprise cross layer information for mobile service acquisition, and wherein the TPC data comprise FIC version information for identifying an update of the FIC data and Serial Concatenated Convolutional Code (SCCC) block mode information for identifying a relationship between SCCC blocks and the data blocks, wherein each SCCC block is constituted of a single data block when a value of the SCCC block mode information is set to ‘00’ and each SCCC block is constituted of two data blocks when the value of the SCCC block mode information is set to ‘01’; estimating an initial frequency offset by partial correlating at least one of the known data sequences; performing carrier recovery on the broadcast signal based on the estimated initial frequency offset; turbo-decoding the mobile service data in the carrier recovered broadcast signal in SCCC block units according to the SCCC block mode information included in the TPC data; building at least one Reed-Solomon (RS) frame including the turbo-decoded mobile service data, the at least one RS frame belonging to an ensemble; acquiring a service map table (SMT) from the at least one RS frame, the SMT comprising a header including an ensemble identifier to identify the ensemble and a payload including service acquisition information; and processing Internet Protocol (IP) datagrams of the mobile service data according to the service acquisition information, wherein at least two of the known data sequences are spaced 16 segments apart.