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

• US 7,881,259 B2
• Filed: 08/25/2008
• Issued: 02/01/2011
• Est. Priority Date: 08/24/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Suh, Jong Yeul, Choi, In Hwan, Lee, Chul Soo, Kim, Jin Pil, Song, Jae Hyung
• Primary Examiner(s): Pezzlo; John
• Application Number:
  US12/198,048
• Publication Number:
  US 20090052581A1
• Time in Patent Office: 890 Days
• Field of Search: 370/252, 370/328, 370/329, 370/352, 370/401, 370/419
• US Class Current: 370/329
• CPC Class Codes: H04H 20/28 Arrangements for simultaneous broadcast of plural pieces of information
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04H 20/65 Arrangements characterised by transmission systems for broadcast
• CPC Class Codes: H04H 40/27 specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95

Abstract

A digital broadcasting system and a data processing method are disclosed. A receiving system of the digital broadcasting system includes a baseband processor, a management processor, and a presentation processor. The baseband processor receives broadcast signals including mobile service data and main service data. Herein, the mobile service data may configure a RS frame, which includes mobile service data and table information describing channel configuration information and IP access information of an ensemble level corresponding to the RS frame. The table information is encapsulated to a UDP/IP header. The management processor processes table information from the RS frame to acquire channel configuration information and IP access information of an ensemble level, and accesses mobile service data requested to be received from the RS frame, based upon the acquired information. The presentation processor decodes the accessed mobile service data and outputs the decoded data to a display screen and/or a speaker.

Claims

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

receiving and demodulating a broadcast signal comprising fast information channel (FIC) data including cross layer information for mobile service acquisition, transmission parameter channel (TPC) data including FIC version information for identifying an update of the FIC data, and a Reed-Solomon (RS) frame including mobile service data;

forming an ensemble identified by an ensemble identifier from the demodulated RS frame and extracting a service map table (SMT) from the ensemble, the SMT being encapsulated with a user datagram protocol (UDP) header and an internet protocol (IP) header, and the SMT having a well-known target IP address and a well-known target UDP port number; and

accessing to an IP datagram of desired mobile service data in the ensemble according to mobile service acquisition information and IP access information of each mobile service included in the extracted SMT.

2. The method of claim 1, wherein receiving and demodulating the broadcast signal comprises detecting a plurality of known data sequences from the broadcast signal.

3. The method of claim 2, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.

4. The method of claim 2, wherein receiving and demodulating the broadcast signal further comprises channel-equalizing the demodulated RS frame using the detected plurality of known data sequences.

5. The method of claim 1, wherein the SMT includes an ensemble identifier identifying the ensemble.

6. The method of claim 1, wherein the SMT includes information indicating whether each mobile service data included in the ensemble is active.

7. The method of claim 1, wherein the SMT includes at least one of an ensemble level descriptor including ensemble level information, a virtual channel descriptor including mobile service level information, and a component descriptor including component level information.

8. The method of claim 1, wherein the IP access information of each mobile service comprises an IP address of each mobile service included in the ensemble.

9. The method of claim 1, wherein the IP access information of each mobile service comprises an IP address and a UDP port number of each component of a mobile service.

10. The method of claim 1, further comprising decoding at least one of audio and video streams included in the IP datagram of the desired mobile service data.

11. A receiver comprising:

a signal receiving and demodulating unit for receiving and demodulating a broadcast signal comprising fast information channel (FIC) data including cross layer information for mobile service acquisition, transmission parameter channel (TPC) data including FIC version information for identifying an update of the FIC data, and a Reed-Solomon (RS) frame including mobile service data;

a first handler for forming an ensemble identified by an ensemble identifier from the demodulated RS frame and extracting a service map table (SMT) from the ensemble, the SMT being encapsulated with a user datagram protocol (UDP) header and an internet protocol (IP) header, and the SMT having a well-known target IP address and a well-known target UDP port number; and

a second handler for accessing to an IP datagram of desired mobile service data in the ensemble according to mobile service acquisition information and IP access information of each mobile service included in the extracted SMT.

12. The receiver of claim 11, wherein the signal receiving unit comprises a known data detector for detecting a plurality of known data sequences from the broadcast signal.

13. The receiver of claim 12, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.

14. The receiver of claim 12, wherein the signal receiving unit further comprises a channel equalizer for channel-equalizing the demodulated RS frame using the detected plurality of known data sequences.

15. The receiver of claim 11, wherein the SMT includes an ensemble identifier identifying the ensemble.

16. The receiver of claim 11, wherein the SMT includes information indicating whether each mobile service data included in the ensemble is active.

17. The receiver of claim 11, wherein the SMT includes at least one of an ensemble level descriptor including ensemble level information, a virtual channel descriptor including mobile service level information, and a component descriptor including component level information.

18. The receiver of claim 11, wherein the IP access information of each mobile service comprises an IP address of each mobile service included in the ensemble.

19. The receiver of claim 11, wherein the IP access information of each mobile service comprises an IP address and a UDP port number of each component of a mobile service.

20. The receiver of claim 11, further comprising decoder for decoding at least one of audio and video streams included in the IP datagram of the desired mobile service data.

21. A method of processing data for a receiver, the method comprising:

receiving and demodulating a broadcast signal comprising fast information channel (FIC) data including cross layer information for mobile service acquisition, transmission parameter channel (TPC) data including FIC version information for identifying an update of the FIC data, and mobile service data corresponding to a Reed-Solomon (RS) frame which belongs to an ensemble;

forming the ensemble identified by an ensemble identifier from the demodulated broadcast signal;

extracting a service map table (SMT) from the ensemble, the SMT being encapsulated with a user datagram protocol (UDP) header and an Internet protocol (IP) header, and the SMT having a target IP address and a target UDP port number; and

accessing to an IP datagram of desired mobile service data in the ensemble according to mobile service acquisition information of each mobile service included in the extracted SMT,

wherein the mobile service acquisition information includes the target IP address and the target UDP port number.

22. The method of claim 21, wherein receiving and demodulating the broadcast signal comprises detecting a plurality of known data sequences from the broadcast signal.

23. The method of claim 22, 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.

24. The method of claim 21, wherein the SMT includes the ensemble identifier identifying the ensemble.

25. A receiver comprising:

a signal receiving and demodulating unit for receiving and demodulating a broadcast signal comprising fast information channel (FIC) data including cross layer information for mobile service acquisition, transmission parameter channel (TPC) data including FIC version information for identifying an update of the FIC data, and mobile service data corresponding to a Reed-Solomon (RS) frame which belongs to an ensemble;

a first handler for forming the ensemble identified by an ensemble identifier from the demodulated broadcast signal;

a second handler for extracting a service map table (SMT) from the ensemble, the SMT being encapsulated with a user datagram protocol (UDP) header and an Internet protocol (IP) header, and the SMT having a target IP address and a target UDP port number; and

a third handler for accessing to an IP datagram of desired mobile service data in the ensemble according to mobile service acquisition information of each mobile service included in the extracted SMT,

wherein the mobile service acquisition information includes the target IP address and the target UDP port number.

26. The receiver of claim 25, wherein the signal receiving and demodulating unit comprises a known data detector for detecting a plurality of known data sequences from the broadcast signal.

27. The receiver of claim 26, 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.

28. The receiver of claim 25, wherein the SMT includes the ensemble identifier identifying the ensemble.