Digital broadcasting system and data processing method

• US 8,107,790 B2
• Filed: 07/16/2010
• Issued: 01/31/2012
• Est. Priority Date: 07/02/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Suh, Jong Yeul, Choi, In Hwan, Hong, Ho Taek, Kwak, Kook Yeon, Kim, Byoung Gill, Song, Jae Hyung, Kim, Jin Pil, Song, Won Gyu, Kim, Jin Woo, Lee, Hyoung Gon, Lee, Joon Hui, Lee, Chul Soo
• Primary Examiner(s): Chevalier, Robert
• Application Number:
  US12/838,382
• Publication Number:
  US 20100284473A1
• Time in Patent Office: 564 Days
• Field of Search: 386/248, 386/332, 386/334, 386/324, 370/312, 370/314
• US Class Current: 386/248
• CPC Class Codes: H04H 20/55 for traffic information
• CPC Class Codes: H04H 20/71 Wireless systems
• CPC Class Codes: H04H 20/95 characterised by a specific format, e.g. an encoded audio stream
• CPC Class Codes: H04N 19/65 using error resilience
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• 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 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• 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 21/4425 Monitoring of client processing errors or hardware failure
• CPC Class Codes: H04N 21/64322 IP

Abstract

A digital broadcasting system and a method of processing data are disclosed, which are robust to error when mobile service data are transmitted. To this end, additional encoding is performed for the mobile service data, whereby it is possible to strongly cope with fast channel change while giving robustness to the mobile service data.

Claims

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

encoding mobile service data of a base layer or mobile service data of the base layer and at least one enhancement layer, each layer is specified by a layer identifier;

mapping the encoded mobile service data into at least one region in a data group that includes a plurality of regions;

adding known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data to the data group, wherein the FIC data includes information for rapid mobile service acquisition and the TPC data includes FIC version information for indicating an update of the FIC data, wherein the FIC data and the TPC data are encoded with a first encoding code and the mobile service data are encoded with a second encoding code; and

transmitting a broadcast signal including the data group.

2. The method of claim 1, wherein a layer identifier value of the base layer is set to 0.

3. The method of claim 1, wherein a layer identifier value of the at least one enhancement layer starts from 1.

4. The method of claim 1, wherein the mobile service data of the base layer and the at least one enhancement layer are scalable video streams.

5. The method of claim 1, wherein the layer identifier of each layer is included in table information.

6. The method of claim 5, wherein the table information comprises profile information indicating a profile of each layer.

7. The method of claim 5, wherein the table information comprises level information indicating a level of each layer.

8. The method of claim 1, wherein at least two of the known data sequences have different lengths.

9. The method of claim 1, 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.

10. The method of claim 1, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).

11. A broadcast transmitter comprising:

an encoder for encoding mobile service data of a base layer or mobile service data of the base layer and at least one enhancement layer, each layer specified by a layer identifier;

a group formatter for mapping the encoded mobile service data into at least one region in a data group that includes a plurality of regions, and adding known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data to the data group, wherein the FIC data includes information for rapid mobile service acquisition and the TPC data includes FIC version information for indicating an update of the FIC data, wherein the FIC data and the TPC data are encoded with a first encoding code and the mobile service data are encoded with a second encoding code; and

a transmitting unit for transmitting a broadcast signal including the data group.

12. The broadcast transmitter of claim 11, wherein a layer identifier value of the base layer is set to 0.

13. The broadcast transmitter of claim 11, wherein a layer identifier value of the at least one enhancement layer starts from 1.

14. The broadcast transmitter of claim 11, wherein the mobile service data of the base layer and the at least one enhancement layer are scalable video streams.

15. The broadcast transmitter of claim 11, wherein the layer identifier of each layer is included in table information.

16. The broadcast transmitter of claim 15, wherein the table information comprises profile information indicating a profile of each layer.

17. The broadcast transmitter of claim 15, wherein the table information comprises level information indicating a level of each layer.

18. The broadcast transmitter of claim 11, wherein at least two of the known data sequences have different lengths.

19. The broadcast transmitter of claim 11, 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.

20. The broadcast transmitter of claim 11, wherein the first encoding code is a Parallel Concatenated Convolutional Code (PCCC) and the second encoding code is a Serial Concatenated Convolutional Code (SCCC).