DIGITAL BROADCAST SYSTEM, AND DATA PROCESSING METHOD

• US 20100185920A1
• Filed: 01/22/2010
• Published: 07/22/2010
• Est. Priority Date: 06/25/2007
• 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, Won Gyu, Kwak, Kook Yeon, Kim, Jin Woo, SONG, Jae Hyung, Lee, Joon Hui
• Granted Patent: US 8,279,773 B2
• Time in Patent Office: Days
• US Class Current: 714/758
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• 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: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• 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 21/4381 Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• 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 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 21/6433 Digital Storage Media - Command and Control Protocol [DSM-CC]
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

A digital broadcast system having storing resistance to errors generated during the transmission of mobile service data, and a data processing method are disclosed. The digital broadcast system additionally encodes mobile service data. As a result, the mobile service data has strong resistance to a channel variation and noise, and at the same time the system can quickly cope with the channel variation.

Claims

1-15. -15. (canceled)

16. A method of processing a broadcast signal in a transmitting system, the method comprising:

performing Reed Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on a RS frame including mobile service data and a first information table including access information of an IP stream for the mobile service data;

encoding transmission parameter channel (TPC) data and fast information channel (FIC) data with a first encoding code and encoding the RS frame with a second encoding code, wherein the FIC data carries cross-layer information to enable fast mobile service acquisition, and wherein the TPC data includes FIC version information for indicating an update of the FIC data; and

modulating and transmitting a broadcast signal including the encoded TPC and FIC data, and the encoded RS frame.

17. The method of claim 16, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

18. The method of claim 16, further comprising:

assigning the RS frame to a plurality of data groups, wherein each data group further includes the TPC and FIC data, and a plurality of known data sequences, which are known by transmitting and receiving sides in advance and differ from each other in length.

19. The method of claim 18, wherein at least one of the plurality of known data sequences is repeated within a same pattern in the data group.

20. The method of claim 18, wherein the TPC and FIC data are inserted between a first known data sequence and a second known data sequence of the plurality of known data sequences.

21. A transmitting system comprising:

an RS frame encoder for performing Reed Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on a RS frame including mobile service data and a first information table including access information of an IP stream for the mobile service data;

a signaling encoder for encoding transmission parameter channel (TPC) data and fast information channel (FIC) data with a first encoding code, wherein the FIC data carries cross-layer information to enable fast mobile service acquisition, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;

a block processor for encoding the RS frame with a second encoding code; and

a transmitting unit for modulating and transmitting a broadcast signal including the encoded TPC and FIC data, and the encoded RS frame.

22. The transmitting system of claim 21, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

23. The transmitting system of claim 21, further comprising:

a group formatter for assigning the RS frame to a plurality of data groups, wherein each data group further includes the TPC and FIC data, and a plurality of known data sequences, which are known by transmitting and receiving sides in advance and differ from each other in length.

24. The transmitting system of claim 23, wherein at least one of the plurality of known data sequences is repeated within a same pattern in the data group.

25. The transmitting system of claim 23, wherein the TPC and FIC data are inserted between a first known data sequence and a second known data sequence of the plurality of known data sequences.

26. A method of processing a broadcast signal in a receiving system, the method comprising:

receiving a broadcast signal comprising a data group, the data group comprising fast information channel (FIC) data carrying cross-layer information to enable fast mobile service acquisition, transmission parameter channel (TPC) data including FIC version information for indicating an update of the FIC data, and mobile service data;

demodulating the received broadcast signal;

obtaining a first information table including access information of an IP stream for the mobile service data from the demodulated broadcast signal;

acquiring the IP stream of the mobile service data based upon the obtained first information table; and

decoding an audio or video data delivered through the acquired IP stream of the mobile service data,

wherein the TPC data and FIC data are encoded with a first encoding code and the mobile service data is encoded with a second encoding code.

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

28. The method of claim 26, wherein the data group further includes a plurality of known data sequences, which are known by transmitting and receiving sides in advance and differ from each other in length.

29. The method of claim 28, wherein at least one of the plurality of known data sequences is repeated within a same pattern in the broadcast signal.

30. The method of claim 28, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence of the plurality of known data sequences.

31. A receiving system comprising:

a tuner for receiving a broadcast signal comprising a data group, the data group comprising fast information channel (FIC) data carrying cross-layer information to enable fast mobile service acquisition, transmission parameter channel (TPC) data including FIC version information for indicating an update of the FIC data, and mobile service data;

a demodulator for demodulating the received broadcast signal;

a processor for obtaining a first information table including access information of an IP stream for the mobile service data from the demodulated broadcast signal, and acquiring the IP stream of the mobile service data based upon the obtained first information table; and

a decoder for decoding an audio or video data delivered through the acquired IP stream of the mobile service data,

wherein the TPC data and FIC data are encoded with a first encoding code and the mobile service data is encoded with a second encoding code.

32. The receiving system of claim 31, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

33. The receiving system of claim 31, wherein the data group further includes a plurality of known data sequences, which are known by transmitting and receiving sides in advance and differ from each other in length.

34. The receiving system of claim 33, wherein at least one of the plurality of known data sequences is repeated within a same pattern in the broadcast signal.

35. The receiving system of claim 33, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence of the plurality of known data sequences.