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

• US 8,670,463 B2
• Filed: 02/06/2012
• Issued: 03/11/2014
• Est. Priority Date: 06/26/2007
• Status: Expired due to Fees

• 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:
  US13/367,266
• Publication Number:
  US 20120127900A1
• Time in Patent Office: 764 Days
• Field of Search: None
• US Class Current: 370/474
• 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

A method of processing broadcast data in a broadcast transmitter includes performing Reed-Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to build at least one RS frame including the mobile service data and dividing the at least one RS frame into a plurality of portions; dividing each of the plurality of portions into several Serial Concatenated Convolutional Code (SCCC) blocks according to SCCC block mode information, encoding data in the SCCC blocks, and mapping the SCCC blocks including the encoded data to data blocks according to the SCCC block mode information; encoding signaling data including fast information channel (FIC) data and transmission parameter channel (TPC) data; and modulating a broadcast signal including data in the data blocks and the encoded signaling data.

Claims

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

performing Reed-Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to build at least one RS frame including the mobile service data and dividing the at least one RS frame into a plurality of portions;

dividing each of the plurality of portions into several Serial Concatenated Convolutional Code (SCCC) blocks according to SCCC block mode information, encoding data in the SCCC blocks at a code rate of 1/H, and mapping the SCCC blocks including the encoded data to data blocks according to the SCCC block mode information, wherein the SCCC block mode information identifies a relationship between the SCCC blocks and the data blocks, wherein each SCCC block is mapped to a respective data block when a value of the SCCC block mode information is set to ‘

00’ and

each SCCC block is mapped to 2 data blocks when the value of the SCCC block mode information is set to ‘

01’

, and wherein H is greater than 1;

encoding signaling data including fast information channel (FIC) data and transmission parameter channel (TPC) data, wherein encoding signaling data comprises;

RS encoding the FIC data,

interleaving the RS-encoded FIC data,

RS encoding the TPC data,

multiplexing the interleaved FIC data and the RS-encoded TPC data, and

Parallel Concatenated Convolutional Code (PCCC) encoding the multiplexed FIC and TPC data; and

modulating a broadcast signal including data in the data blocks and the encoded signaling data,

wherein the at least one RS frame belongs to an ensemble including a service map table (SMT), 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 comprise cross layer information for mobile service acquisition, and wherein the TPC data comprise FIC version information for identifying an update of the FIC data and the SCCC block mode information.

2. The method of claim 1, wherein the service acquisition information comprises Internet Protocol (IP) address information for accessing to IP datagrams of the mobile service data.

3. The method of claim 2, 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.

4. The method of claim 1, wherein each of the plurality of portions is divided into 10 SCCC blocks when a value of the SCCC block mode information is set to ‘

00’ and

each of the plurality of portions is divided into 5 SCCC blocks when the value of the SCCC block mode information is set to ‘

01’

.

5. A broadcast transmitter comprising:

a Reed-Solomon (RS) frame encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to build at least one RS frame including the mobile service data, and dividing the at least one RS frame into a plurality of portions;

a block processor for dividing each of the plurality of portions into several Serial Concatenated Convolutional Code (SCCC) blocks according to SCCC block mode information, encoding data in the SCCC blocks at a code rate of 1/H, and mapping the SCCC blocks including the encoded data to data blocks according to the SCCC block mode information, wherein the SCCC block mode information identifies a relationship between the SCCC blocks and the data blocks, wherein each SCCC block is mapped to a respective data block when a value of the SCCC block mode information is set to ‘

00’ and

each SCCC block is mapped to 2 data blocks when the value of the SCCC block mode information is set to ‘

01’

, and wherein H is greater than 1;

a signaling encoder for encoding signaling data including fast information channel (FIC) data and transmission parameter channel (TPC) data, wherein the signaling encoder comprises;

a first RS encoder for RS encoding the FIC data,

an interleaver for interleaving the RS encoded FIC data,

a second RS encoder for RS encoding the TPC data,

a multiplexer for multiplexing the interleaved FIC data and the RS-encoded TPC data, and

a Parallel Concatenated Convolutional Code (PCCC) encoder for PCCC encoding the multiplexed FIC and TPC data; and

a modulator for modulating a broadcast signal including data in the data blocks and the encoded signaling data,

wherein the at least one RS frame belongs to an ensemble including a service map table (SMT), 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 comprise cross layer information for mobile service acquisition, and wherein the TPC data comprise FIC version information for identifying an update of the FIC data and the SCCC block mode information.

6. The broadcast transmitter of claim 5, wherein the service acquisition information comprises Internet Protocol (IP) address information for accessing to IP datagrams of the mobile service data.

7. The broadcast transmitter of claim 6, 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.

8. The broadcast transmitter of claim 5, wherein each of the plurality of portions is divided into 10 SCCC blocks when a value of the SCCC block mode information is set to ‘

00’ and

each of the plurality of portions is divided into 5 SCCC blocks when the value of the SCCC block mode information is set to ‘

01’

.