Digital broadcasting system and data processing method that carries broadcast data using IP packets

Patent metadata

Field	Value
Publication number	US-9948960-B2
Application number	US-201615365856-A
Country	US
Kind code	B2
Filing date	Nov 30, 2016
Priority date	Jun 28, 2007
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

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.

First claim

What is claimed is:

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, and
wherein the IP packets carry Asynchronous Layered Coding (ALC)/Layered Coding Transport (LCT) packets that include the broadcast data.

2. An apparatus for transmitting broadcast data, the apparatus comprising:
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.

3. A method of receiving broadcast data, the method comprising:
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.

4. An apparatus for receiving broadcast data, the apparatus comprising:
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.

Assignees

• Lg Electronics Inc

Inventors

• Song Jae Hyung
• Choi In Hwan
• Hong Ho Taek
• Kwak Kook Yeon
• Kim Byoung Gill
• Suh Jong Yeul
• Kim Jin Pil
• Song Won Gyu
• Lee Chul Soo
• Kim Jin Woo
• Lee Hyoung Gon
• Lee Joon Hui

Classifications

• H04L1/0058

  Block-coded modulation · CPC title

• H04N21/4382

  Demodulation or channel decoding, e.g. QPSK demodulation (analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002) · CPC title

• H04L1/0041

  Arrangements at the transmitter end · CPC title

• H04L1/0045

  Arrangements at the receiver end · CPC title

• H04N21/4345

  Extraction or processing of SI, e.g. extracting service information from an MPEG stream · CPC title