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

• US 7,933,232 B2
• Filed: 04/22/2010
• Issued: 04/26/2011
• 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: Park, Sang Kil, Choi, In Hwan, Lee, Chul Soo
• Primary Examiner(s): Afshar; Kamran
• Application Number:
  US12/765,808
• Publication Number:
  US 20100211973A1
• Time in Patent Office: 369 Days
• Field of Search: 370/310, 370/322, 370/26, 370/329, 370/342, 370/348, 370/395.52, 370469-470, 455/450, 455/509, 455/445, 455/130, 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 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, mobile service data, and known data sequences, 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;

collecting the mobile service data in the received broadcast signal and building at least one of a plurality of Reed-Solomon (RS) frames, wherein the at least one of the plurality of RS frames belongs to an ensemble;

acquiring a service map table (SMT) from the at least one of the 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.

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 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 the known data sequences from the broadcast signal.

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

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

10. The method of claim 1, wherein the at least one of the 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, wherein the payload includes the IP datagram of the mobile service data, wherein the header includes a type field indicating a type of data in the payload, and wherein N and M are integers, and k is equal to or greater than 0.

11. A receiver comprising:

a tuner for receiving 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, mobile service data, and known data sequences, 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;

a first handler for collecting the mobile service data in the received broadcast signal and building at least one of a plurality of Reed-Solomon (RS) frames, wherein the at least one of the plurality of RS frames belongs to an ensemble;

a second handler for acquiring a service map table (SMT) from the at least one of the 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.

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 Internet protocol (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 the known data sequences from the broadcast signal.

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

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

20. The receiver of claim 11, wherein the at least one of the 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, wherein the payload includes the IP datagram of the mobile service data, wherein the header includes a type field indicating a type of data in the payload, and wherein N and M are integers, and k is equal to or greater than 0.