Transmission stream generating device for generating transmission stream which additional data is stuffed in a payload area of a packet, digital broadcast transmitting/receiving device for transmitting/receiving the transmission stream, and methods thereof

摘要

A transmission stream (TS) generating apparatus includes an adaptor which receives general data and generates a stream having a plurality of packets, and which provides adaptive field in some of the plurality of packets, and an inserter which inserts additional data into all the payload areas of some of the plurality of packets that are not provided with the adaptive fields. Because additional data is transmitted, without requiring adaptive field header in certain packet, a data transmission rate is increased.

主权项

1. A digital broadcast receiving apparatus, comprising:
a demodulator to receive and demodulate a stream transmitted from a digital broadcast transmitting apparatus; an equalizer to equalize the demodulated stream; and a data processing unit to decode the equalized stream, wherein the stream comprising supplementary data generated by compressing data in a compression standard which is different from a compression standard applied to normal data, wherein the compressed supplementary data is first Reed-Solomon (RS) encoded, interleaved and processed so that an area for inserting a parity is provided, differently from the normal data to be robust against errors, and the stream is second RS encoded, interleaved and trellis encoded after the supplementary data is inserted to the stream comprising the compressed normal data in the digital broadcast transmitting apparatus, wherein the data processing unit trellis decodes the supplementary data, deinterleaves the trellis decoded supplementary data without interleaving the normal data, and convolutional decodes the deinterleaved supplementary data, and wherein the data processing unit further interleaves the convolutional-decoded supplementry data and re-performs the trellis decoding, the deinterleaving, and the convolutional decoding in response to a soft decision output of the convolutional decoding.