Patent ID: 8014332

Claim:
A broadcasting receiver comprising: a receiver which receives a broadcast signal including mobile service data and main service data, in which the mobile service data is able to construct a data group, the data group is divided into several areas, N number of known data streams are inserted into some areas from among the several areas, and a transmission parameter is inserted between a first known data stream and a second known data stream from among the N number of known data streams; a transmission parameter detector for detecting the transmission parameter; a block decoder for performing block-unit symbol-decoding of the mobile service data contained in the received broadcast signal on the basis of the detected transmission parameter; and a decoder for extracting audio data and additional information from the symbol-decoded mobile service data, dequantizing the audio data, converting the dequantized audio data into a time-domain signal for each block according to a length of a block indicated by an identifier contained in the additional information, and restoring an audio signal.