DIGITAL BROADCAST SYSTEM FOR TRANSMITTING/RECEIVING DIGITAL BROADCAST DATA, AND DATA PROCESING METHOD FOR USE IN THE SAME

• US 20100205507A1
• Filed: 04/22/2010
• Published: 08/12/2010
• Est. Priority Date: 06/26/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Byoung Gill, Suh, Jong Yeul, Lee, Hyoung Gon, Hong, Ho Taek, Choi, In Hwan, Lee, Chul Soo, Kim, Jin Pil, Song, Jae Hyung, Song, Won Gyu, Kwak, Kook Yeon, Kim, Jin Woo, Lee, Joon Hui
• Granted Patent: US 8,135,038 B2
• Time in Patent Office: Days
• US Class Current: 714/758
• 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

1-12. -12. (canceled)

13. A method of processing broadcast data for a broadcast receiver, the method comprising:

receiving a broadcast signal comprising mobile service data packaged into at least one of Reed-Solomon (RS) frames belonging to an ensemble;

demodulating the received broadcast signal;

forming the at least one of RS frames from the demodulated broadcast signal;

acquiring a service map table (SMT) from the at least one of RS frames, the SMT comprising a header including an ensemble identifier to identify the ensemble and a payload including service acquisition information; and

processing an IP datagram of the mobile service data according to the service acquisition information,

wherein the broadcast signal further includes fast information channel (FIC) data and transmission parameter channel (TPC) data, regularly spaced known data sequences, the FIC data comprising cross layer information for mobile service acquisition, the TPC data comprising FIC version information for identifying an update of the FIC data.

14. The method of claim 13, wherein the service acquisition information comprises IP address information for accessing to the IP datagram of the mobile service data.

15. The method of claim 14, wherein the IP address information comprises:

an IP address; and

address indication information indicating whether a version of the IP address is IPv4 or IPv6.

16. The method of claim 13, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

17. The method of claim 13, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the known data sequences.

18. The method of claim 13, wherein the FIC data and TPC data are encoded with a first encoding code and the RS frame is encoded with a second encoding code.

19. The method of claim 18, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

20. A broadcast receiver comprising:

a tuner for receiving a broadcast signal comprising mobile service data packaged into at least one of Reed-Solomon (RS) frames belonging to an ensemble;

a demodulator for demodulating the received broadcast signal;

an RS frame decoder for forming the at least one of RS frames from the demodulated broadcast signal;

a table processor for acquiring a service map table (SMT) from the at least one of RS frames, the SMT comprising a header including an ensemble identifier to identify the ensemble and a payload including service acquisition information; and

an IP processor for processing an IP datagram of the mobile service data according to the service acquisition information,

wherein the broadcast signal further includes fast information channel (FIC) data and transmission parameter channel (TPC) data, regularly spaced known data sequences, the FIC data comprising cross layer information for mobile service acquisition, the TPC data comprising FIC version information for identifying an update of the FIC data.

21. The broadcast receiver of claim 20, wherein the service acquisition information comprises IP address information for accessing to the IP datagram of the mobile service data.

22. The broadcast receiver of claim 21, wherein the IP address information comprises:

an IP address; and

address indication information indicating whether a version of the IP address is IPv4 or IPv6.

23. The broadcast receiver of claim 20, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

24. The broadcast receiver of claim 20, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the known data sequences.

25. The broadcast receiver of claim 20, wherein the FIC data and TPC data are encoded with a first encoding code and the RS frame is encoded with a second encoding code.

26. The broadcast receiver of claim 25, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

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

performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and a service map table (SMT), thereby packaging the mobile service data and the service map table (SMT) into at least one of RS frames belonging to an ensemble;

mapping the at least one of RS frames into a plurality of groups, wherein each group includes a portion of data included in a corresponding RS frame, regularly spaced known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data comprises cross layer information for mobile service acquisition, and wherein the TPC data comprises FIC version information for identifying an update of the FIC data; and

modulating a broadcast signal including the plurality of groups,

wherein the SMT comprises a header including an ensemble identifier to identify the ensemble and a payload including service acquisition information, wherein the FIC data and the TPC data are encoded with a first encoding code, and wherein the at least one of RS frames is encoded with a second encoding code.

28. The method of claim 27, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

29. The method of claim 27, wherein the service acquisition information comprises IP address information for accessing to the IP datagram of the mobile service data.

30. The method of claim 29, wherein the IP address information comprises:

an IP address; and

address indication information indicating whether a version of the IP address is IPv4 or IPv6.

31. The method of claim 27, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

32. The method of claim 27, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the known data sequences.

33. A broadcast transmitter comprising:

an RS frame encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and a service map table (SMT), thereby packaging the mobile service data and the service map table (SMT) into at least one of RS frames belonging to an ensemble;

a group formatter for mapping the at least one of RS frames into a plurality of groups, wherein each group includes a portion of data included in a corresponding RS frame, regularly spaced known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data comprises cross layer information for mobile service acquisition, and wherein the TPC data comprises FIC version information for identifying an update of the FIC data; and

a modulator for modulating a broadcast signal including the plurality of groups,

wherein the SMT comprises a header including an ensemble identifier to identify the ensemble and a payload including service acquisition information, wherein the FIC data and the TPC data are encoded with a first encoding code, and wherein the at least one of RS frames is encoded with a second encoding code.

34. The broadcast transmitter of claim 33, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

35. The broadcast transmitter of claim 33, wherein the service acquisition information comprises IP address information for accessing to the IP datagram of the mobile service data.

36. The broadcast transmitter of claim 35, wherein the IP address information comprises:

an IP address; and

address indication information indicating whether a version of the IP address is IPv4 or IPv6.

37. The broadcast transmitter of claim 33, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

38. The broadcast transmitter of claim 33, wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence of the known data sequences.