Digital broadcasting system and data processing method that carries broadcast data using IP packets
First Claim
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1. A method of transmitting broadcast data, the method comprising:
- encoding the broadcast data by adding parity data;
interleaving the encoded broadcast data;
encoding first signaling data;
allocating the interleaved broadcast data and the encoded first signaling data to frames;
modulating the frames; and
transmitting a broadcast signal carrying the modulated frames,wherein the first signaling data includes a code rate for encoding the broadcast data and information related to fast service acquisition information,wherein the fast service acquisition information allows a receiver to quickly locate upper layer signaling information,wherein the modulated frames include link layer packets,wherein the link layer packets carry service signaling data for discovering a service provided by the encoded broadcast data,wherein the link layer packets further carry Internet Protocol (IP) packets, andwherein the IP packets carry Asynchronous Layered Coding (ALC)/Layered Coding Transport (LCT) packets that include the broadcast data.
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Abstract
A digital broadcasting system and a method of processing data are disclosed, which are robust to error when mobile service data are transmitted. To this end, additional encoding is performed for the mobile service data, whereby it is possible to strongly cope with fast channel change while giving robustness to the mobile service data.
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Citations
4 Claims
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1. A method of transmitting broadcast data, the method comprising:
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encoding the broadcast data by adding parity data; interleaving the encoded broadcast data; encoding first signaling data; allocating the interleaved broadcast data and the encoded first signaling data to frames; modulating the frames; and transmitting a broadcast signal carrying the modulated frames, wherein the first signaling data includes a code rate for encoding the broadcast data and information related to fast service acquisition information, wherein the fast service acquisition information allows a receiver to quickly locate upper layer signaling information, wherein the modulated frames include link layer packets, wherein the link layer packets carry service signaling data for discovering a service provided by the encoded broadcast data, wherein the link layer packets further carry Internet Protocol (IP) packets, and wherein the IP packets carry Asynchronous Layered Coding (ALC)/Layered Coding Transport (LCT) packets that include the broadcast data.
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2. An apparatus for transmitting broadcast data, the apparatus comprising:
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a first encoder for encoding the broadcast data by adding parity data; an interleaver for interleaving the encoded broadcast data; a second encoder for encoding first signaling data; a builder for allocating the interleaved broadcast data and the encoded first signaling data to frames; a modulator for modulating the frames; and a transmitter for transmitting a broadcast signal carrying the modulated frames, wherein the first signaling data includes a code rate for encoding the broadcast data and information related to fast service acquisition information, wherein the fast service acquisition information allows a receiver to quickly locate upper layer signaling information, wherein the modulated frames include link layer packets, wherein the link layer packets carry service signaling data for discovering a service provided by the encoded broadcast data, wherein the link layer packets further carry Internet Protocol (IP) packets, and wherein the IP packets carry Asynchronous Layered Coding (ALC)/Layered Coding Transport (LCT) packets that include the broadcast data.
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3. A method of receiving broadcast data, the method comprising:
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receiving a broadcast signal carrying modulated frames; demodulating the frames carried by the broadcast signal, the frames including link layer packets; parsing the link layer packets and signaling data from the demodulated frames, wherein the link layer packets carry service signaling data for discovering a service provided by the broadcast data, wherein the link layer packets further carry Internet Protocol (IP) packets, and wherein the IP packets carry Asynchronous Layered Coding (ALC)/Layered Coding Transport (LCT) packets that include the broadcast data; decoding the signaling data; and decoding the broadcast data included in the IP packets.
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4. An apparatus for receiving broadcast data, the apparatus comprising:
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a receiver for receiving a broadcast signal carrying modulated frames; a demodulator for demodulating the frames carried by the broadcast signal, the frames including link layer packets; a parser for parsing the link layer packets and first signaling data from the demodulated frames, wherein the link layer packets carry service signaling data for discovering a service provided by the broadcast data, wherein the link layer packets further carry Internet Protocol (IP) packets, and wherein the IP packets carry Asynchronous Layered Coding (ALC)/Layered Coding Transport (LCT) packets that include the broadcast data; a first decoder for decoding the signaling data; and a second decoder for decoding the broadcast data included in the IP packets.
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Specification