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

• US 9,521,436 B2
• Filed: 01/10/2014
• Issued: 12/13/2016
• Est. Priority Date: 06/28/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• 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
• Primary Examiner(s): Pezzlo, John
• Application Number:
  US14/152,700
• Publication Number:
  US 20140189770A1
• Time in Patent Office: 1,068 Days
• Field of Search: 370/252, 370/389, 370/386, 370/329
• US Class Current: 1/1
• CPC Class Codes: H04H 20/55 for traffic information
• CPC Class Codes: H04H 20/95 characterised by a specific format, e.g. an encoded audio stream
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0058 Block-coded modulation
• CPC Class Codes: H04L 1/006 Trellis-coded modulation
• CPC Class Codes: H04L 1/0065 Serial concatenated codes
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04N 21/234 Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: 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
• CPC Class Codes: 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
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: 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
• CPC Class Codes: H04N 21/64322 IP

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

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.