DTV transmitting system and method of processing broadcast data

摘要

A DTV transmitting system includes an encoder, a randomizer, a block processor, a group formatter, a deinterleaver, and a packet formatter. The encoder codes enhanced data for error correction, permutes the coded data, and further codes the permuted data for error detection. The randomizer randomizes the coded enhanced data, and the block processor codes the randomized data at an effective coding rate of 1/H. The group formatter forms a group of enhanced data having data regions, and inserts the coded enhanced data into at least one of the data regions. The deinterleaver deinterleaves the group of enhanced data, and the packet formatter formats the deinterleaved data into corresponding data bytes.

主权项

1. A method of processing broadcast data in a broadcast transmitter, the method comprising:
receiving enhanced data and adding padding data to the enhanced data; randomizing the enhanced data to which the padding data are added; encoding the randomized enhanced data; first interleaving the encoded enhanced data; second interleaving the first interleaved enhanced data; encoding signaling data for signaling the enhanced data; first interleaving the encoded signaling data; second interleaving the first interleaved signaling data; and transmitting the second interleaved enhanced data and the second interleaved signaling data through a frame, wherein the frame further includes known data, wherein the known data include a first type of known data and a second type of known data other than the first type of known data, and wherein at least one of the first type of known data and the second type of known data are used for channel estimation in a broadcast receiver.