Patent ID: 7620102

Claim:
A digital broadcasting transmission and reception system comprising a digital broadcasting transmission apparatus and a digital broadcasting reception apparatus, wherein the digital broadcasting transmission apparatus includes a robust processor that codes a robust stream of a dual transport stream in which a normal stream and the robust stream are combined, wherein the robust processor comprises: a demultiplexer (DE-MUX) that separates the normal stream and the robust stream from the dual transport stream; a robust encoder that appends a parity to the separated robust stream; a robust interleaver that interleaves the robust stream having the appended parity; and a multiplexer (MUX) that combines the interleaved robust stream and the separated normal stream, and wherein the digital broadcasting reception apparatus includes a robust decoder that decodes a received robust stream of a received dual transport stream where a received normal stream and the received robust stream are combined, wherein the robust decoder comprises: a first decoder that trellis-decodes the received robust stream; a robust deinterleaver that deinterleaves the trellis-decoded robust stream; a second decoder that convolution decodes the deinterleaved robust stream; a robust interleaver that interleaves the convolution-decoded robust stream; and a frame formatter that adds decoded data of the second decoder to a part that corresponds to a position of the received robust stream of a frame where the received normal stream and the received robust stream are mixed.