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

• US 7,646,828 B2
• Filed: 08/25/2008
• Issued: 01/12/2010
• 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: Suh, Jong Yeul, Choi, In Hwan, Lee, Chul Soo, Kim, Jin Pil, Song, Jae Hyung
• Primary Examiner(s): Odom; Curtis B
• Application Number:
  US12/198,057
• Publication Number:
  US 20090052587A1
• Time in Patent Office: 505 Days
• Field of Search: 375/316, 455/3.02, 398/66
• US Class Current: 375/316
• CPC Class Codes: H04L 2025/03382 Single of vestigal sideband
• CPC Class Codes: H04L 2025/03796 Location of reference signals
• CPC Class Codes: H04L 25/03203 Trellis search techniques
• CPC Class Codes: H04L 27/0012 arrangements for identifying the type of modulation
• CPC Class Codes: H04L 27/06 Demodulator circuits; Receiver circuits
• 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 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/6112 involving terrestrial transmission, e.g. DVB-T
• CPC Class Codes: H04N 21/6162 involving terrestrial transmission, e.g. DVB-T

Abstract

A digital broadcasting system and a data processing method are disclosed. The receiving system of the digital broadcasting system includes a baseband processor, a first handler, a second handler, and a storage unit. The baseband processor receives a broadcast signal including mobile service data and main service data. Herein, the mobile service data may configure an RS frame, and the RS frame may include the mobile service data and first signaling information of a first data type on the mobile service data. The first handler parses the first signaling information received from the RS frame, converts parsed data elements of the first data type to a second data type, and merges multiple identification information of the parsed first data type, thereby generating identification information of the second data type. The second handler receives second signaling information of the second data type on the mobile service data, the second signaling information including at least one fragment, uses the identification information of the second data type included in the first handler to search at least one fragment within the second signaling information, and maps data elements received through the searched fragment with the data elements converted to the second data type.

Claims

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

receiving a broadcast signal comprising fast information channel (FIC) data including channel binding information between a mobile service and an ensemble, transmission parameter channel (TPC) data including FIC version information for indicating an update of the FIC data, and a Reed-Solomon (RS) frame including mobile service data;

demodulating the RS frame;

forming an ensemble identified by an ensemble identifier from the demodulated RS frame and acquiring first signaling information from the ensemble, the first signaling information including access information of the mobile service data; and

receiving second signaling information;

controlling taking precedence to the first signaling information over the second signaling information when a data element included in the first signaling information is different from a corresponding data element included in the second signaling information.

2. The method of claim 1, further comprising storing the data element included in the first signaling information when the data element included in the first signaling information is different from the corresponding data element included in the second signaling information.

3. The method of claim 2, wherein storing the data element included in the first signaling information comprises updating a pre-stored data element with the data element of the first signaling information when the data element of the first signaling information is different from the pre-stored data element.

4. The method of claim 1, wherein the first signaling information comprises a service map table (SMT) and the second signaling information comprises a service guide (SG) including at least one fragment.

5. The method of claim 1, further comprising:

detecting a plurality of known data sequences from the broadcast signal; and

channel-equalizing the demodulated RS frame using the detected known data sequences.

6. The method of claim 1, wherein the RS frame comprises a plurality of mobile and hand held (MH) transport packets, each MH transport packet having an M byte header and an N-M byte payload, the payload including an IP datagram of the mobile service data.

7. The method of claim 1, wherein the RS frame 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.

8. The method of claim 5, wherein at least two of the plurality of known data sequences have different lengths.

9. The method of claim 5, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.

10. A receiver comprising:

a receiving unit for receiving a broadcast signal comprising fast information channel (FIC) data including channel binding information between a mobile service and an ensemble, transmission parameter channel (TPC) data including FIC version information for indicating an update of the FIC data, and a Reed-Solomon (RS) frame including mobile service data;

a demodulator for demodulating the RS frame;

a first handler for forming an ensemble identified by an ensemble identifier from the demodulated RS frame and acquiring first signaling information from the ensemble, the first signaling information including access information of the mobile service data;

a second handler for receiving second signaling information; and

a third handler for controlling taking precedence to the first signaling information over the second signaling information when a data element included in the first signaling information is different from a corresponding data element included in the second signaling information.

11. The receiver of claim 10, further comprising a storing unit for storing the data element included in the first signaling information when the data element included in the first signaling information is different from the corresponding data element included in the second signaling information.

12. The receiver of claim 11, wherein the third handler updates a data element pre-stored in the storing unit with the data element of the first signaling information when the data element of the first signaling information is different from the pre-stored data element.

13. The receiver of claim 10, wherein the first signaling information comprises a service map table (SMT) and the second signaling information comprises a service guide (SG) including at least one fragment.

14. The receiver of claim 10, further comprising:

a known data detector for detecting a plurality of known data sequences from the broadcast signal; and

a channel equalizer for channel-equalizing the demodulated RS frame using the detected known data sequences.

15. The receiver of claim 10, wherein the RS frame comprises a plurality of mobile and handheld (MH) transport packets, each MH transport packet having an M byte header and an N-M byte payload, the payload including an IP datagram of the mobile service data.

16. The receiver of claim 10, wherein the RS frame 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.

17. The receiver of claim 14, wherein at least two of the plurality of known data sequences have different lengths.

18. The receiver of claim 14, wherein the TPC data and the FIC data are inserted between a first known data sequence and a second known data sequence.