Patent ID: 7933351
Filing Date: 2011-04-26
Classification: H04L,H04N

Abstract:
1. A broadcast transmitter comprising: a first encoder for generating a Reed-Solomon (RS) frame including enhanced data, wherein the RS-frame comprises ‘187×N’ bytes of the enhanced data, P bytes of RS parity data added to a bottom of each column of the ‘187×N’ bytes, and 2 bytes of cyclic redundancy check (CRC) checksum data added to a right end of each row of the ‘(187+P)×N’ bytes, wherein P and N are greater than 1; a second encoder for encoding the data in the RS-frame at a coding rate of 1/H, wherein H is greater than 1; a group formatter for mapping a portion of the encoded data into a data group, the data group including the portion of the encoded data, signaling data including data group information, and known data sequences; a third encoder for RS-encoding the data in the data group; a fourth encoder for trellis-encoding the RS-encoded data, wherein at least one memory in the fourth encoder is initialized at each start of the known data sequences; and a modulator for modulating a broadcast signal including the trellis encoded data.