TRANSMITTING SYSTEM AND METHOD OF PROCESSING DIGITAL BROADCAST SIGNAL IN TRANSMITTING SYSTEM, RECEIVING SYSTEM AND METHOD OF RECEIVING DIGITAL BROADCAST SIGNAL IN RECEIVING SYSTEM

• US 20110093759A1
• Filed: 10/19/2010
• Published: 04/21/2011
• Est. Priority Date: 10/19/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Byoung Gill, Lee, Hyoung Gon, Choi, In Hwan, Song, Jae Hyung, Mun, Chul Kyu, Song, Won Gyu, Kim, Jin Woo
• Granted Patent: US 8,489,961 B2
• Time in Patent Office: Days
• US Class Current: 714/756
• CPC Class Codes: H03M 13/05 using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits H03M13/2906 takes precedence
• CPC Class Codes: H03M 13/13 Linear codes
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/2703 the interleaver involving at least two directions
• CPC Class Codes: H03M 13/2966 Turbo codes concatenated with another code, e.g. an outer block code
• CPC Class Codes: H03M 13/2972 Serial concatenation using convolutional component codes
• CPC Class Codes: H03M 13/3715 Adaptation to the number of estimated errors or to the channel state
• CPC Class Codes: H03M 13/373 with erasure correction and erasure determination, e.g. for packet loss recovery or setting of erasures for the decoding of Reed-Solomon codes
• CPC Class Codes: H03M 13/6538 ATSC VBS systems
• CPC Class Codes: H04L 1/004 by using forward error control H04L1/0618 takes precedence; coding, decoding or code conversion, for error detection or correction H03M13/00
• 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 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0059 Convolutional codes
• 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

Abstract

A transmitting system, a receiving system, a method of processing broadcast signals and a method of receiving broadcast signals are disclosed.

The method for transmitting a broadcast signal in a transmitter includes encoding mobile data for forward error correction (FEC) to build Reed-Solomon (RS) frames and dividing the built RS frames into RS frame portions, dividing the RS frame portions into Serially Concatenated Convolutional Code (SCCC) blocks and mapping the SCCC blocks to data blocks and scalable data blocks, corresponding to a plurality of data segments, wherein at least one of the SCCC blocks includes one of the data blocks and one of the scalable data blocks, encoding signaling data including a header and a payload, forming data groups including the data blocks and the scalable data blocks, wherein specific data blocks of the data blocks in the data groups include the signaling data having information for a number of ensembles being a collection of services transmitted through the data groups, interleaving data in the data groups, wherein the interleaved data includes a plurality of data segments, and wherein at least one of the plurality of data segments includes a part of one of the data blocks and a part of one of the scalable data blocks and transmitting the interleaved data during slots in a transmission frame.

Claims

1. A method for transmitting a broadcast signal in a transmitter, the method comprising;

encoding mobile data for forward error correction (FEC) to build a Reed-Solomon (RS) frame and dividing the built RS frame into RS frame portions;

dividing the RS frame portions into Serially Concatenated Convolutional Code (SCCC) blocks and mapping the SCCC blocks to data blocks and scalable data blocks, corresponding to a plurality of data segments, wherein at least one of the SCCC blocks includes one of the data blocks and one of the scalable data blocks;

encoding signaling data including a header and a payload;

forming data groups including the data blocks and the scalable data blocks, wherein specific data blocks of the data blocks in the data groups include the signaling data having information for a number of ensembles being a collection of services transmitted through the data groups;

interleaving data in the data groups, wherein the interleaved data includes a plurality of data segments, and wherein at least one of the plurality of data segments includes a part of one of the data blocks and a part of one of the scalable data blocks; and

transmitting the interleaved data during slots in a transmission frame.

2. The method of claim 1, wherein the payload includes information corresponding to a number of ensembles transmitted through data groups including the scalable data blocks.

3. The method of claim 1, wherein the signaling data are divided into a plurality signaling data segment payloads.

4. The method of claim 3, wherein one of the data groups includes a segment header for one of the plurality of signaling data segments and the one of the plurality of signaling data segment payloads.

5. The method of claim 1, wherein the RS frame includes a primary RS frame or a secondary RS frame depending on RS frame mode, wherein the RS frame mode indicates whether or not to build the primary RS frame, or build the primary RS frame and secondary RS frame.

7. The apparatus of claim 5, wherein the payload includes information corresponding to a number of ensembles transmitted through data groups including the scalable data blocks.

6. An apparatus for transmitting a broadcast signal, the apparatus comprising;

a first encoder configured to encode mobile data for forward error correction (FEC) to build a Reed-Solomon (RS) frame and dividing the built RS frame into RS frame portions;

a divider configured to divide the RS frame portions into Serially Concatenated Convolutional Code (SCCC) blocks and mapping the SCCC blocks to data blocks and scalable data blocks, corresponding to a plurality of data segments, wherein at least one of the SCCC blocks includes one of the data blocks and one of the scalable data blocks;

a second encoder configured to encode signaling data including a header and a payload;

a group formatter configured to form data groups including the data blocks and the scalable data blocks, wherein specific data blocks of the data blocks in the data groups include the signaling data having information for a number of ensembles being a collection of services transmitted through the data groups;

an interleaver configured to interleave data in the data groups, wherein the interleaved data includes a plurality of data segments and wherein at least one of the plurality of data segments includes a part of one of the data blocks and a part of one of the scalable data blocks;

a transmission unit configured to transmit the interleaved data during slots in a transmission frame.

8. The apparatus of claim 6, wherein the signaling data are divided into a plurality of signaling data segment payloads.

9. The apparatus of claim 8, wherein one of the data groups includes a header for one of the plurality of signaling data segments and the one of the plurality of signaling data segment payloads.

10. The apparatus of claim 6, wherein the RS frame includes a primary RS frame or a secondary RS frame depending on RS frame mode, wherein the RS frame mode indicates whether or not to build the primary RS frame, or build the primary RS frame and secondary RS frame.

11. A method for receiving a broadcast signal in a receiver, the method comprising;

receiving a broadcast signal including a transmission frame, wherein a parade of data groups in the broadcast signal is received during slots within the transmission frame, each data group including data blocks and scalable data blocks, corresponding to a plurality of data segments,

wherein at least one of the plurality of data segments includes a part of one of the data blocks and a part of one of the scalable data blocks,

wherein specific data blocks of the data blocks in the data groups include the signaling data having information for a number of ensembles being a collection of services transmitted through the each data group,

wherein the each data group includes signaling data segments having a segment payload;

demodulating the broadcast signal and obtaining the signaling data segments in the each data group; and

decoding the signaling data in the signaling data segments.

12. The method of claim 11, wherein the signaling data includes a payload including information corresponding to a number of ensembles transmitted through the each data group including the scalable data blocks.

13. The method of claim 12, wherein when the each data group only includes the data blocks, receiver skips the information corresponding to a number of ensembles transmitted through the each data group including the scalable data blocks.

14. An apparatus for receiving a broadcast signal, the apparatus comprising;

a receiver configured to receive a broadcast signal including a transmission frame,

wherein a parade of data groups in the broadcast signal is received during slots within the transmission frame, each data group including data blocks and scalable data blocks, corresponding to a plurality of data segments,

wherein at least one of the plurality of data segments includes a part of one of the data blocks and a part of one of the scalable data blocks,

wherein specific data blocks of the data blocks in the data groups include the signaling data having information for a number of ensembles being a collection of services transmitted through the each data group,

wherein the each data group includes signaling data segments, each signaling data segment including a segment payload;

a demodulator configured to demodulate the broadcast signal and obtaining the signaling data segments in the each data group; and

a decoder configured to decode the signaling data in the signaling data segments.

15. The apparatus of claim 14, wherein the signaling data includes a payload including information corresponding to a number of ensembles transmitted through the each data group including the scalable data blocks.

16. The apparatus of claim 15, wherein when the each data group only includes the data blocks, receiver skips the information corresponding to a number of ensembles transmitted through the each data group including the scalable data blocks.