Patent ID: 8442044

Claim:
A digital broadcast transmitter for processing mobile service data, the digital broadcast transmitter comprising: a deinterleaver configured to deinterleave mobile service data to output a first data group, the first data croup including the deinterleaved mobile service data; a packet formatter configured to output transport stream (TS) packets including the deinterleaved mobile service data in the first data group, wherein each of the TS packets has a length of 207 bytes; and a data interleaver configured to interleave data of the TS packets to output a second data group, wherein the second data group includes a plurality of segments, an Nth segment in the second data group having M mobile service data bytes, an (N+1)th segment in the second data group having L mobile service data bytes, an (N+2)th segment in the second data group having K mobile service data bytes, a Pth segment in the second data group having Q mobile service data bytes, a (P+1)th segment in the second data group having R mobile service data bytes, and a (P+2)th segment in the second data group having S mobile service data bytes, wherein M<L<K, wherein S<R<Q, wherein N, K, L, M, P, S, R and Q are natural numbers, wherein P>N.