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

• US 7,733,819 B2
• Filed: 08/25/2008
• Issued: 06/08/2010
• 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: Choi, In Hwan, Lee, Chul Soo, Park, Sang Kil
• Primary Examiner(s): Afshar; Kamran
• Application Number:
  US12/198,015
• Publication Number:
  US 20090097429A1
• Time in Patent Office: 652 Days
• Field of Search: 370/310, 370/322, 370/26, 370/329, 370/342, 370/348, 370/395.52, 370469-470, 370/395.1, 455/450, 455/509, 455/445, 455/130, 455/3.06, 725/68
• US Class Current: 370/312
• CPC Class Codes: H04H 20/26 Arrangements for switching distribution systems

Abstract

A digital broadcasting system and a method for controlling the same are disclosed. A method for controlling a digital broadcast receiving system includes the steps of receiving a broadcast signal having mobile service data and main service data multiplexed therein, extracting transmission parameter channel (TPC) signaling information and fast information channel (FIC) signaling information from a data group within the received mobile service data, by using the extracted fast information channel (FIC) signaling information, acquiring a program table describing virtual channel information and service of an ensemble, the ensemble being a virtual channel group of the received mobile service data, by using the acquired program table, detecting a descriptor defining basic information required for accessing the received service, and, by using the detected descriptor, controlling the receiving system to enable access to the corresponding service.

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 mobile service data packaged into at least one of a plurality of Reed-Solomon (RS) frames for a desired ensemble;

forming the at least one of a plurality of RS frames from the demodulated broadcast signal;

acquiring a service map table (SMT) from the at least one of a plurality of RS frames;

accessing to an IP datagram of the mobile service data according to mobile service access information included in the acquired SMT; and

decoding at least one of audio and video streams included in the IP datagram of the mobile service data based on profile information, codec information, audio sampling rate information, and language information included in the acquired SMT.

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

3. The method of claim 2, wherein at least one of the profile information, the codec information, the audio sampling rate information, and the language information is included in the component level descriptor.

4. The method of claim 1, wherein the SMT 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 the FIC data further include a first ensemble identifier identifying the ensemble.

6. The method of claim 5, wherein the SMT further includes a second ensemble identifier identifying the ensemble, wherein the second ensemble identifier is matched with the first ensemble identifier.

7. The method of claim 1, further comprising detecting a plurality of known data sequences from the broadcast signal.

8. The method of claim 7, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.

9. The method of claim 7, further comprising channel-equalizing the demodulated broadcast signal using the detected known data sequences.

10. The method of claim 1, wherein receiving and demodulating the broadcast signal comprises acquiring slots corresponding to an RS frame using a time-slicing method.

21. The method of claim 7, wherein at least two of the plurality of known data sequences have different lengths.

22. The method of claim 1, wherein the at least one of a plurality of RS frames comprises a plurality of mobile and handheld (MH) transport packets, each MH transport packet having an M-byte header, k stuffing bytes and an (N−

M−

k)-byte payload, the payload including an IP datagram of the mobile service data, wherein the header includes a type field indicating a type of all MH transport packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

23. The method of claim 1, wherein the at least one of a plurality of RS frames is divided into a plurality of slots and a data group is formed from each slot, the data group comprising a plurality of data regions, wherein first and second known data sequences are inserted into start and end portions of at least one of the data regions, and a third known data sequence is inserted in one of start and end portions of at least one of the remaining data regions.

11. A receiver comprising:

a receiving 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 packaged into at least one of a plurality of Reed-Solomon (RS) frames for a desired ensemble;

a first handler for forming the at least one of a plurality of RS frames from the demodulated broadcast signal;

a second handler for acquiring a service map table (SMT) from the at least one of a plurality of RS frames;

a third handler for accessing to an IP datagram of the mobile service data according to mobile service access information included in the acquired STM; and

a decoder for decoding at least one of audio and video streams included in the IP datagram of the mobile service data based on profile information, codec information, audio sampling rate information, and language information included in the acquired SMT.

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

13. The receiver of claim 12, wherein at least one of the profile information, the codec information, the audio sampling rate information, and the language information is included in the component level descriptor.

14. The receiver of claim 11, wherein the SMT 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.

15. The receiver of claim 11, wherein the FIC data further include a first ensemble identifier identifying the ensemble.

16. The receiver of claim 15, wherein the SMT further includes a second ensemble identifier identifying the ensemble, wherein the second ensemble identifier is matched with the first ensemble identifier.

17. The receiver of claim 11, further comprising a known data detector for detecting a plurality of known data sequences from the broadcast signal.

18. The receiver of claim 17, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.

19. The receiver of claim 17, further comprising a channel equalizer for channel-equalizing the demodulated broadcast signal using the detected known data sequences.

20. The receiver of claim 11, wherein the receiving unit acquires slots corresponding to an RS frame using a time-slicing method.

24. The receiver of claim 17, wherein at least two of the plurality of known data sequences have different lengths.

25. The receiver of claim 11, wherein the at least one of a plurality of RS frames comprises a plurality of mobile and handheld (MH) transport packets, each MH transport packet having an M-byte header, k stuffing bytes and an (N−

M−

k)-byte payload, the payload including an IP datagram of the mobile service data, wherein the header includes a type field indicating a type of all MH transport packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

26. The receiver of claim 11, wherein the at least one of a plurality of RS frames is divided into a plurality of slots and a data group is formed from each slot, the data group comprising a plurality of data regions, wherein first and second known data sequences are inserted into start and end portions of at least one of the data regions, and a third known data sequence is inserted in one of start and end portions of at least one of the remaining data regions.

27. 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 packaged into at least one of a plurality of Reed-Solomon (RS) frames for a desired ensemble;

forming the at least one of a plurality of RS frames from the demodulated broadcast signal;

acquiring a service map table (SMT) from the at least one of a plurality of RS frames;

extracting profile information, codec information, audio sampling rate information, and language information included in the acquired SMT;

accessing to an IP datagram of the mobile service data according to mobile service access information included in the acquired SMT; and

decoding at least one of audio and video streams included in the IP datagram of the mobile service data based on at least one of the extracted profile information, codec information, audio sampling rate information, and language information.

28. The method of claim 27, wherein the SMT includes at least one of an ensemble level descriptor including ensemble level information, a service level descriptor including mobile service level information, and a component level descriptor including component level information.

29. The method of claim 28, wherein at least one of the profile information, the codec information, the audio sampling rate information, and the language information is included in the component level descriptor.

30. The method of claim 27, wherein the SMT 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.

31. The method of claim 27, wherein the FIC data further include a first ensemble identifier identifying the ensemble.

32. The method of claim 31, wherein the SMT further includes a second ensemble identifier identifying the ensemble, wherein the second ensemble identifier is matched with the first ensemble identifier.

33. The method of claim 27, further comprising detecting a plurality of known data sequences from the broadcast signal.

34. The method of claim 33, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.

35. The method of claim 33, further comprising channel-equalizing the demodulated broadcast signal using the detected known data sequences.

36. The method of claim 33, wherein at least two of the plurality of known data sequences have different lengths.

37. The method of claim 27, wherein receiving and demodulating the broadcast signal comprises acquiring slots corresponding to an RS frame using a time-slicing method.

38. The method of claim 27, wherein the at least one of a plurality of RS frames comprises a plurality of mobile and handheld (MH) transport packets, each MH transport packet having an M-byte header, k stuffing bytes, and an (N−

M−

k)-byte payload, the payload including an IP datagram of the mobile service data, wherein the header includes a type field indicating a type of all MH transport packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

39. The method of claim 27, wherein the at least one of a plurality of RS frames is divided into a plurality of slots and a data group is formed from each slot, the data group comprising a plurality of data regions, wherein first and second known data sequences are inserted into start and end portions of at least one of the data regions, and a third known data sequence is inserted in one of start and end portions of at least one of the remaining data regions.

40. A receiver comprising:

a receiving 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 packaged into at least one of a plurality of RS frames for a desired ensemble;

a first handler for forming the at least one of a plurality of RS frames from the demodulated broadcast signal;

a second handler for acquiring a service map table (SMT) from the at least one of a plurality of RS frames and extracting profile information, codec information, audio sampling rate information, and language information included in the acquired SMT;

a third handler for accessing to an IP datagram of the mobile service data according to mobile service access information included in the acquired SMT; and

a decoder for decoding at least one of audio and video streams included in the IP datagram of the mobile service data based on at least one of the extracted profile information, codec information, audio sampling rate information, and language information.

41. The receiver of claim 40, wherein the SMT includes at least one of an ensemble level descriptor including ensemble level information, a service level descriptor including mobile service level information, and a component level descriptor including component level information.

42. The receiver of claim 41, wherein at least one of the profile information, the codec information, the audio sampling rate information, and the language information is included in the component level descriptor.

43. The receiver of claim 40, wherein the SMT 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.

44. The receiver of claim 40, wherein the FIC data further include a first ensemble identifier identifying the ensemble.

45. The receiver of claim 44, wherein the SMT further includes a second ensemble identifier identifying the ensemble, wherein the second ensemble identifier is matched with the first ensemble identifier.

46. The receiver of claim 40, further comprising a known data detector for detecting a plurality of known data sequences from the broadcast signal.

47. The receiver of claim 46, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.

48. The receiver of claim 46, further comprising a channel equalizer for channel-equalizing the demodulated broadcast signal using the detected known data sequences.

49. The receiver of claim 46, at least two of the plurality of known data sequences have different lengths.

50. The receiver of claim 40, wherein the receiving unit acquires slots corresponding to an RS frame using a time-slicing method.

51. The receiver of claim 40, wherein the at least one of a plurality of RS frames comprises a plurality of mobile and handheld (MH) transport packets, each MH transport packet having an M-byte header, k stuffing bytes, and an (N−

M−

k)-byte payload, the payload including an IP datagram of the mobile service data, wherein the header includes a type field indicating a type of all MH transport packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

52. The receiver of claim 40, wherein the at least one of a plurality of RS frames is divided into a plurality of slots and a data group is formed from each slot, the data group comprising a plurality of data regions, wherein first and second known data sequences are inserted into start and end portions of at least one of the data regions, and a third known data sequence is inserted in one of start and end portions of at least one of the remaining data regions.