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

• US 10,097,312 B2
• Filed: 12/04/2017
• Issued: 10/09/2018
• 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:
  US15/831,259
• Publication Number:
  US 20180102873A1
• Time in Patent Office: 309 Days
• Field of Search: None
• 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 receiver, the method comprising:

receiving a broadcast signal including broadcast service data encoded at a code rate, transmission parameters, first signaling information and second signaling information which provide information for acquisition of a service;

demodulating the received broadcast signal;

first decoding the transmission parameters in the demodulated broadcast signal;

second decoding the first-decoded transmission parameters;

block de-interleaving the broadcast service data in the demodulated broadcast signal; and

decoding the block de-interleaved broadcast service data,

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

wherein the second signaling information includes Internet Protocol (IP) address information for accessing of the broadcast service data, and

wherein the transmission parameters include information for identifying the code rate of the broadcast service data.

2. The method of claim 1, wherein the broadcast signal further includes known data and 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.

3. The method of claim 2, further comprising:

equalizing the broadcast service data by performing channel estimation based on at least the first pattern of known data or the second pattern of known data.

4. The method of claim 1, wherein the first signaling information further includes short name information for the broadcast service data.

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

a tuner to receive a broadcast signal including broadcast service data encoded at a code rate, transmission parameters, first signaling information and second signaling information which provide information for acquisition of a service;

a demodulator to demodulate the received broadcast signal;

a first decoder to first decode the transmission parameters in the demodulated broadcast signal;

a second decoder to second decode the first-decoded transmission parameters;

a de-interleaver to block de-interleave the broadcast service data in the demodulated broadcast signal; and

a decoder to decode the block de-interleaved broadcast service data,

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

wherein the second signaling information includes Internet Protocol (IP) address information for accessing of the broadcast service data, and

wherein the transmission parameters include information for identifying the code rate of the broadcast service data.

6. The receiver of claim 5, wherein the broadcast signal further includes known data and 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.

7. The receiver of claim 6, further comprising:

an equalizer to equalize the broadcast service data by performing channel estimation based on at least the first pattern of known data or the second pattern of known data.

8. The receiver of claim 6, wherein the first signaling information further includes short name information for the broadcast service data.