# US 9,521,436 B2 · Digital broadcasting system and data processing method that carries broadcast data using IP packets

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- Number: US 9,521,436 B2
- Document ID: US9521436B2
- Status: Granted
- Kind: B2
- Application number: 14/152,700
- Filed: 2014-01-10
- Published: 2014-07-03
- Granted: 2016-12-13
- Earliest claimed: 2007-06-28
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Jae Hyung Song; In Hwan Choi; Ho Taek Hong; Kook Yeon Kwak; Byoung Gill Kim; Jong Yeul Suh; Jin Pil Kim; Won Gyu Song; Chul Soo Lee; Jin Woo Kim; Hyoung Gon Lee; Joon Hui Lee
- Web page: https://patentgrep.com/patent/US9521436B2

## CPC

- H04N 21/234: Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04H 20/55: for traffic information
- H04H 20/95: characterised by a specific format, e.g. an encoded audio stream
- H04L 1/0041: {Arrangements at the transmitter end}
- H04L 1/0045: {Arrangements at the receiver end}
- H04L 1/0058: {Block-coded modulation}
- H04L 1/006: {Trellis-coded modulation}
- H04L 1/0065: {Serial concatenated codes}
- H04L 1/007: {Unequal error protection (for format H04L1/0078; for codes per se H03M13/35)}
- H04L 1/0071: {Use of interleaving (interleaving per se H03M13/27)}
- H04L 69/324: in the data link layer [OSI layer 2], e.g. HDLC
- H04N 21/235: Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N 21/2383: Channel coding {or modulation} of digital bit-stream, e.g. QPSK modulation (arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002)
- H04N 21/41407: {embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop (constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57)}
- H04N 21/4345: {Extraction or processing of SI, e.g. extracting service information from an MPEG stream}
- H04N 21/435: Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N 21/4382: {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)}
- H04N 21/64322: {IP}
- H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## 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.

## Claims

### Claim 1

A method of transmitting a broadcast signal in a transmitter, the method comprising:
encoding data transmission units including broadcast data by adding parity data;
interleaving the encoded broadcast data;
encoding first signaling data, wherein the first signaling data includes transmission parameters of the encoded broadcast data;
allocating the interleaved broadcast data and the encoded signaling data to a frame;
modulating the frame; and
transmitting the broadcast signal carrying the modulated frame,
wherein the first signaling data includes a code rate of the data transmission unit and information for fast service acquisition,
wherein the modulated frame includes second signaling data,
wherein the second signaling data includes the fast service acquisition information for a receiver to locate upper layer signaling information,
wherein the modulated frame carries transport packets,
wherein a first transport packet carries IP packets including the broadcast data, and
wherein a second transport packet carries service signaling data describing a service provided by the encoded broadcast data.