BROADCASTING RECEIVER AND BROADCAST SIGNAL PROCESSING METHOD

摘要

Broadcating receiver and broadcast signal processing method are disclosed. Herein a receiver receives a broadcasting signal including main service data and mobile service data, wherein the mobile service data configures a data group, and the data group is divided into a plurality of regions, known data streams are linearly inserted into some of the plurality of regions, and initialization data used for initializing a memory in a trellis encoder of a transmitter is located at a start portion of the known data stream. a known data detector detects known data in the received broadcasting signal. an equalizer channel-equalizes the received mobile service data using the detected known data. And a decoder extracts audio data and supplementary information from the channel-equalized mobile service data, inversely scales the audio data on the basis of a scale factor indicated by scale factor index information included in the supplementary information, and restores an audio signal.