BROADCASTING RECEIVER AND BROADCAST SIGNAL PROCESSING METHOD
First Claim
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1. A broadcasting receiver comprising:
- a receiver which 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 which detects known data in the received broadcasting signal;
an equalizer which channel-equalizes the received mobile service data using the detected known data; and
a decoder which 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.
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Abstract
A digital broadcasting system which is robust against an error when mobile service data is transmitted and a method of processing data are disclosed. The mobile service data is subjected to an additional coding process and the coded mobile service data is transmitted. Accordingly, it is possible to cope with a serious channel variation while applying robustness to the mobile service data.
39 Citations
14 Claims
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1. A broadcasting receiver comprising:
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a receiver which 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 which detects known data in the received broadcasting signal; an equalizer which channel-equalizes the received mobile service data using the detected known data; and a decoder which 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of processing a broadcasting signal, the method comprising:
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receiving a broadcasting signal including main service data and mobile service data; detecting known data in the received broadcasting signal; channel-equalizing the received mobile service data using the detected known data; and extracting audio data and supplementary information from the channel-equalized mobile service data, inversely scaling the audio data on the basis of a scale factor indicated by scale factor index information included in the supplementary information, and restoring an audio signal, 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 streams. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification