Digital broadcast system for transmitting/receiving digital broadcast data, and data processing method for use in the same

• US 9,490,936 B2
• Filed: 01/10/2014
• Issued: 11/08/2016
• Est. Priority Date: 06/26/2007
• 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): BEDNASH, JOSEPH A
• Application Number:
  US14/152,742
• Publication Number:
  US 20140126586A1
• Time in Patent Office: 1,033 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H03M 13/2732 Convolutional interleaver; Interleavers using shift-registers or delay lines like, e.g. Ramsey type interleaver
• CPC Class Codes: H03M 13/2792 Interleaver wherein interleaving is performed jointly with another technique such as puncturing, multiplexing or routing
• CPC Class Codes: H03M 13/2906 using block codes H03M13/2957 takes precedence
• CPC Class Codes: H04L 1/0034 where the transmitter decides based on inferences, e.g. use of implicit signalling
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0042 Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape H04L1/0067 takes precedence
• 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 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 2101/659 Internet protocol version 6 [IPv6] addresses
• CPC Class Codes: H04L 69/324 in the data link layer [OSI layer 2], e.g. HDLC
• 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 21/42607 for processing the incoming bitstream
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/64322 : IP

Abstract

The present invention is directed to a digital broadcast system and a data processing method. A broadcast signal in which mobile service data and main service data are multiplexed is transmitted and received. Then, in a broadcasting receiver, the program table information including information about a service or a program of an ensemble is parsed according to an identifier of the ensemble in which the mobile service data are multiplexed, in the received broadcast signal. And a mobile service is outputted by using the mobile service data and the parsed program table information.

Claims

1. A method of processing broadcast data in a transmitter, the method comprising:

performing encoding on broadcast service data for at least one service;

first encoding transmission parameters to add parity data to the transmission parameters for first error correction;

second encoding the first-encoded transmission parameters at a specific code rate for second error correction;

interleaving the encoded broadcast service data; and

transmitting a frame that includes the interleaved broadcast service data and the second-encoded transmission parameters,

wherein the frame further includes signaling information which provides information for acquisition of the at least one service,

wherein the signaling information includes information for identifying a broadcast stream within which the broadcast service data of the at least one service are carried and information for indicating whether or not the at least one service is hidden, and

wherein the transmission parameters include information related to the encoding of the broadcast service data and information related to the frame.

2. The method of claim 1, wherein the signaling information further includes a major channel number and a minor channel number for the broadcast service data.

3. The method of claim 1, wherein the frame further includes known data, wherein the known data include a first pattern of known data and a second pattern of known data other than the first pattern of known data, and wherein at least one of the first pattern of known data or the second pattern of known data is used for channel estimation in a receiver.

4. The method of claim 1, wherein the signaling information further includes information for service guide related to the at least one service.

5. A transmitter for processing broadcast data, the transmitter comprising:

an encoder for performing encoding on broadcast service data for at least one service;

a signaling encoder for first encoding transmission parameters to add parity data to the transmission parameters for first error correction and second encoding the first-encoded transmission parameters at a specific code rate for second error correction;

an interleaver for interleaving the encoded broadcast service data; and

a transmitting unit for transmitting a frame that includes the interleaved broadcast service data and the second-encoded transmission parameters,

wherein the frame further includes signaling information which provides information for acquisition of the at least one service,

wherein the signaling information includes information for identifying a broadcast stream within which the broadcast service data of the at least one service are carried and information for indicating whether or not the at least one service is hidden, and

wherein the transmission parameters include information related to the encoding of the broadcast service data and information related to the frame.

6. The transmitter of claim 5, wherein the signaling information further includes a major channel number and a minor channel number for the broadcast service data.

7. The transmitter of claim 5, wherein the frame further includes known data, wherein the known data include a first pattern of known data and a second pattern of known data other than the first pattern of known data, and wherein at least one of the first pattern of known data or the second pattern of known data is used for channel estimation in a receiver.

8. The transmitter of claim 5, wherein the signaling information further includes information for service guide related to the at least one service.