Broadcasting receiver and broadcast signal processing method
First Claim
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1. 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 power-supply controller for controlling a power-supply voltage using the detected transmission parameter such that it receives a data group including desired mobile service data to be received; and
a decoder for extracting audio data from an audio stream contained in the mobile service data, dequantizing the audio data, and restoring a stereo audio signal on the basis of mid data and side data contained in the dequantized audio data.
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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.
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Citations
15 Claims
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1. A broadcasting receiver comprising:
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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 power-supply controller for controlling a power-supply voltage using the detected transmission parameter such that it receives a data group including desired mobile service data to be received; and a decoder for extracting audio data from an audio stream contained in the mobile service data, dequantizing the audio data, and restoring a stereo audio signal on the basis of mid data and side data contained in the dequantized audio data. - View Dependent Claims (2, 3, 4, 5)
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6. A method for processing a broadcast signal comprising:
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a) receiving a broadcast signal including main service data and mobile service data; b) detecting a transmission parameter from the received broadcast signal; c) controlling a power-supply voltage using the detected transmission parameter such that it receives a data group including desired mobile service data to be received; and d) extracting audio data from an audio stream contained in the mobile service data, dequantizing the audio data, and restoring a stereo audio signal on the basis of mid data and side data contained in the dequantized audio 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. - View Dependent Claims (7, 8)
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9. A broadcasting receiver comprising:
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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 power-supply controller for controlling a power-supply voltage using the detected transmission parameter such that it receives a data group including desired mobile service data to be received; and a decoder for extracting an audio parameter from an audio stream contained in the mobile service data, calculating sub-frame number information indicating the number of sub-frames contained in the audio stream on the basis of the extracted audio parameter, calculating start position information of each sub-frame on the basis of the calculated sub-frame number information, detecting the sub-frame from the audio stream on the basis of the calculated start position information, and decoding audio data contained in the sub-frame. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification