Patent ID: 8059723

Claim:
A digital television (DTV) transmitting system for processing digital broadcast data, the DTV transmitting system comprising: a Reed-Solomon (RS) frame encoder for generating an RS frame by adding RS parity data to bottom ends of columns of an RS frame payload and adding Cyclic Redundancy Check (CRC) checksum data to right ends of rows of the RS frame payload, the RS frame payload including enhanced data; a block processor for encoding the RS-CRC encoded enhanced data with a coding rate of 1/H, where H is an integer greater than 1; a group formatter for mapping a portion of the enhanced data encoded with the coding rate of 1/H into a data group and adding known data sequences and signaling information into the data group, and inserting place holders for main data, MPEG headers, and RS parity data into the data group; a trellis encoder for trellis encoding the data group; and a transmitting unit for modulating the trellis-encoded data group and transmitting the modulated data group.