Patent ID: 8059729

Claim:
An apparatus for transmitting information data in a multi-channel digital broadcasting system, comprising: a sub-channel generator configured to generate a first sub-channel based on the information data and a second sub-channel based on the information data; wherein the first sub-channel comprises: a regular part generated by a regular part block, based on the information data, wherein the regular part block comprises: a first encoder configured to receive and encode the information data; and a first interleaver configured to interleave the encoded information data; and wherein the second sub-channel comprises: a parity part, generated by a parity part block, corresponding to the regular part, wherein the parity part block comprises: a second interleaver configured to interleave the encoded information data from the first encoder; a second encoder configured to receive and encode the interleaved information data from the second interleaver, and to output parity data based on the interleaved information data from the second interleaver.