Digital broadcasting system and method of processing data in digital broadcasting system

• US 8,087,052 B2
• Filed: 09/22/2008
• Issued: 12/27/2011
• Est. Priority Date: 09/21/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Sang Hyup, Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung, Kim, Jeong Woo
• Primary Examiner(s): Kumar, Pankaj
• Assistant Examiner(s): FLYNN, RANDY A
• Application Number:
  US12/235,590
• Publication Number:
  US 20090083795A1
• Time in Patent Office: 1,191 Days
• Field of Search: 725 62- 63, 455 301- 302, 455/403, 370/312, 375/316
• US Class Current: 725/62
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23614 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 21/41407 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 21/4348 Demultiplexing of additional data and video streams
• 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 21/4384 involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]
• CPC Class Codes: H04N 7/015 High-definition television systems
• CPC Class Codes: H04N 7/088 the inserted signal being digital
• CPC Class Codes: H04W 4/08 User group management

Abstract

A digital broadcast receiver and a control method thereof are disclosed. The control method of the digital broadcast receiver includes receiving a broadcast signal into which mobile service data and main service data are multiplexed, extracting TPC signaling information and FIC signaling information from a data group in the received mobile service data, acquiring a program table defining a mapping relation between each of all ensembles transmitted at a physical frequency and at least one virtual channel corresponding to the ensemble, using the extracted FIC signaling information, and detecting IP address information required for channel tuning to the at least one virtual channel corresponding to the ensemble, using the acquired program table.

Claims

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

receiving a broadcast signal, the broadcast signal comprising mobile service data, a signaling information table including access information of the mobile service data, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition, wherein the information for rapid mobile service acquisition includes information indicating whether service protection is applied to the mobile service data, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;

demodulating the received broadcast signal;

obtaining the signaling information table from the demodulated broadcast signal; and

obtaining an IP datagram of the mobile service data using the signaling information table,

wherein the mobile service data are packaged into at least one Reed-Solomon (RS) frame belonging to an ensemble, the ensemble including the signaling information table.

2. The method of claim 1, wherein the signaling information table is segmented into at least one signaling information table section, wherein the at least one signaling information table section is included in the at least one RS frame belonging to the ensemble.

3. The method of claim 2, wherein the at least one signaling information table section comprises a section header and a section body, wherein the section header includes an ensemble identifier identifying the ensemble and the section body includes the access information of the mobile service data.

4. The method of claim 2, wherein the at least one signaling information table section is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

5. The method of claim 1, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

6. 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.

7. A broadcast receiver comprising:

a tuner for receiving a broadcast signal, the broadcast signal comprising mobile service data, a signaling information table including access information of the mobile service data, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition, wherein the information for rapid mobile service acquisition includes information indicating whether service protection is applied to the mobile service data, and wherein the TPC data includes FIC version information for indicating an update of the FIC data;

a demodulator for demodulating the received broadcast signal;

a first handler for obtaining the signaling information table from the demodulated broadcast signal; and

a second handler for obtaining an IP datagram of the mobile service data using the signaling information table,

wherein the mobile service data are packaged into at least one Reed-Solomon (RS) frame belonging to an ensemble, the ensemble including the signaling information table.

8. The broadcast receiver of claim 7, wherein the signaling information table is segmented into at least one signaling information table section, wherein the at least one signaling information table section is included in the at least one RS frame belonging to the ensemble.

9. The broadcast receiver of claim 8, wherein the at least one signaling information table section comprises a section header and a section body, wherein the section header includes an ensemble identifier identifying the ensemble and the section body includes the access information of the mobile service data.

10. The broadcast receiver of claim 8, wherein the at least one signaling information table section is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

11. The broadcast receiver of claim 7, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

12. The broadcast receiver of claim 7, 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.

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

performing, by a Reed Solomon (RS) encoder, RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data in order to package the mobile service data into at least one RS frame belonging to an ensemble, the ensemble including a signaling information table including access information of the mobile service data;

mapping the at least one RS frame into a plurality of groups, wherein each of the plurality of groups includes a portion of data included in a corresponding RS frame, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes binding information between mobile services and the ensemble, wherein the binding information includes information indicating whether service protection is applied to the mobile service data, and wherein the TPC data includes FIC version information for indicating an update of the FIC data; and

transmitting a broadcast signal including the plurality of groups.

14. The method of claim 13, wherein the signaling information table is segmented into at least one signaling information table section, wherein the at least one signaling information table section is included in the at least one RS frame belonging to the ensemble.

15. The method of claim 14, wherein the at least one signaling information table section comprises a section header and a section body, wherein the section header includes an ensemble identifier identifying the ensemble and the section body includes the access information of the mobile service data.

16. The method of claim 14, wherein the at least one signaling information table section is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

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

18. 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.

19. A broadcast transmitter comprising:

a Reed Solomon (RS) encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data in order to package the mobile service data into at least one RS frame belonging to an ensemble, the ensemble including a signaling information table including access information of the mobile service data;

a group formatting means for mapping the at least one RS frame into a plurality of groups, wherein each of the plurality of groups includes a portion of data included in a corresponding RS frame, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes binding information between mobile services and the ensemble, wherein the binding information includes information indicating whether service protection is applied to the mobile service data, and wherein the TPC data includes FIC version information for indicating an update of the FIC data; and

a transmitting means for transmitting a broadcast signal including the plurality of groups.

20. The broadcast transmitter of claim 19, wherein the signaling information table is segmented into at least one signaling information table section, wherein the at least one signaling information table section is included in the at least one RS frame belonging to the ensemble.

21. The broadcast transmitter of claim 20, wherein the at least one signaling information table section comprises a section header and a section body, wherein the section header includes an ensemble identifier identifying the ensemble and the section body includes the access information of the mobile service data.

22. The broadcast transmitter of claim 20, wherein the at least one signaling information table section is encapsulated with a user datagram protocol and IP (UDP/IP) header including a well-known IP address and a well-known UDP port number.

23. The broadcast transmitter of claim 19, wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

24. The broadcast transmitter of claim 19, 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.