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

• US 8,683,529 B2
• Filed: 08/25/2008
• Issued: 03/25/2014
• 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: Yoo, Hui Sang, Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung, Kwak, Min Sung
• Primary Examiner(s): Goodarzi, Nasser
• Assistant Examiner(s): Peng, Fred
• Application Number:
  US12/197,879
• Publication Number:
  US 20090055865A1
• Time in Patent Office: 2,038 Days
• Field of Search: None
• US Class Current: 725/62
• CPC Class Codes: H03M 13/6522 Intended application, e.g. transmission or communication standard
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: H04N 19/65 using error resilience
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/2383 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 21/414 Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/6125 involving transmission via Internet transmission by internet of broadcast information H04H60/82
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/6379 directed to encoder , e.g. for requesting a lower encoding rate
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 5/38 Transmitter circuitry for the transmission of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04N 5/50 Tuning indicators; Automatic tuning control

Abstract

The present invention provides a method of processing data. The method of processing data includes receiving a broadcasting signal where mobile service data are multiplexed with main service data, extracting transmission-parameter-channel signaling information and fast-information-channel signaling information from a data group within the received mobile service data; obtaining first program table information describing virtual channel information of an ensemble and a service provided by the ensemble using the fast-information-channel signaling information, the ensemble the ensemble corresponding to a virtual channel group of the received mobile service data, obtaining information indicating that second program table information, which describes an additional service provided by the ensemble, is included in the ensemblem and parsing the second program table information according to the obtained information; and providing the additional service by using the second program table information.

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, a plurality of fast information channel (FIC) segments, and transmission parameter channel (TPC) data, wherein the plurality of FIC segments are comprised of FIC data, each FIC segment comprising a 2-byte segment header and a 35-byte segment payload including a portion of the FIC data,

wherein the signaling information table further includes number information specifying a number of mobile services signaled by the signaling information table, service identification information identifying a mobile service and a component descriptor for a component of the mobile service in the signaling information table, the component descriptor including sampling rate information identifying a sampling rate of an audio stream component,

wherein the signaling information table further includes component number information specifying a number of Internet Protocol (IP) stream components in the identified mobile service, component IP address flag information indicating whether component IP address information is present for an IP stream component, and the component IP address information specifying a source address of an IP datagram carrying the IP stream component;

demodulating the received broadcast signal; and

collecting the FIC segments included in the demodulated broadcast signal and recovering the FIC data,

wherein the FIC data includes information for rapid mobile service acquisition, and wherein the TPC data includes FIC version information for indicating an update of the FIC data.

2. The method of claim 1, further comprising:

obtaining the signaling information table from the broadcast signal; and

processing audio or video data of the mobile service data using the access information of the mobile service data included in the signaling information table.

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

4. The method of claim 1, wherein the segment header comprises type information indicating a type of data carried in the FIC segment.

5. The method of claim 1, wherein the segment header comprises error indication information indicating whether the FIC segment contains an error.

6. 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, a plurality of fast information channel (FIC) segments, and transmission parameter channel (TPC) data, wherein the plurality of FIC segments are comprised of FIC data, each FIC segment comprising a 2-byte segment header and a 35-byte segment payload including a portion of the FIC data,

wherein the signaling information table further includes number information specifying a number of mobile services signaled by the signaling information table, service identification information identifying a mobile service and a component descriptor for a component of the mobile service in the signaling information table, the component descriptor including sampling rate information identifying a sampling rate of an audio stream component,

wherein the signaling information table further includes component number information specifying a number of Internet Protocol (IP) stream components in the identified mobile service, component IP address flag information indicating whether component IP address information is present for an IP stream component, and the component IP address information specifying a source address of an IP datagram carrying the IP stream component;

a demodulator for demodulating the received broadcast signal; and

a first handler for collecting the FIC segments included in the demodulated broadcast signal and recovering the FIC data,

wherein the FIC data includes information for rapid mobile service acquisition, and wherein the TPC data includes FIC version information for indicating an update of the FIC data.

7. The broadcast receiver of claim 6, further comprising:

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

a processor for processing audio or video data of the mobile service data using the access information of the mobile service data included in the signaling information table.

8. The broadcast receiver of claim 6, wherein the broadcast signal further comprises known data sequences, and wherein at least two of the known data sequences are spaced 16, segments apart and have different lengths.

9. The broadcast receiver of claim 6, wherein the segment header comprises type information indicating a type of data carried in the FIC segment.

10. The broadcast receiver of claim 6, wherein the segment header comprises error indication information indicating whether the FIC segment contains an error.

11. 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 and a signaling information table including access information of the mobile service data, thereby forming an RS frame,

wherein the signaling information table further includes number information specifying a number of mobile services signaled by the signaling information table, service identification information identifying a mobile service and a component descriptor for a component of the mobile service in the signaling information table, the component descriptor including sampling rate information identifying a sampling rate of an audio stream component,

wherein the signaling information table further includes component number information specifying a number of Internet Protocol (IP) stream components in the identified mobile service, component IP address flag information indicating whether component IP address information is present for an IP stream component, and the component IP address information specifying a source address of an IP datagram carrying the IP stream component;

dividing the RS frame into a plurality of groups, wherein each of the plurality of groups includes a portion of data included in the RS frame, known data sequences, a fast information channel (FIC) segment, and transmission parameter channel (TPC) data, wherein the FIC segment comprises a 2-byte segment header and a 35-byte segment payload including a portion of FIC data, the FIC data including information for rapid mobile service acquisition, 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,

wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

12. The method of claim 11, wherein the RS frame comprises a plurality of packets, each 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, the header including a type field indicating a type of all packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

13. The method of claim 11, wherein the FIC data is segmented into units of 35 bytes, and each 35-byte unit is carried through a corresponding segment payload.

14. The method of claim 11, wherein the segment header comprises type information indicating a type of data carried in the FIC segment.

15. The method of claim 11, wherein the segment header comprises error indication information indicating whether the FIC segment contains an error.

16. A broadcast transmitter comprising:

an RS encoder for performing Reed Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and a signaling information table including access information of the mobile service data, thereby forming an RS frame,

wherein the signaling information table further includes number information specifying a number of mobile services signaled by the signaling information table, service identification information identifying a mobile service and a component descriptor for a component of the mobile service in the signaling information table, the component descriptor including sampling rate information identifying a sampling rate of an audio stream component,

wherein the signaling information table further includes component number information specifying a number of Internet Protocol (IP) stream components in the identified mobile service, component IP address flag information indicating whether component IP address information is present for an IP stream component, and the component IP address information specifying a source address of an IP datagram carrying the IP stream component,

wherein the RS frame is divided into a plurality of groups, wherein each of the plurality of groups includes a portion of data included in the RS frame, known data sequences, a fast information channel (FIC) segment, and transmission parameter channel (TPC) data, wherein the FIC segment comprises a 2-byte segment header and a 35-byte segment payload including a portion of FIC data, the FIC data including information for rapid mobile service acquisition, and wherein the TPC data includes FIC version information for indicating an update of the FIC data; and

a transmission unit for transmitting a broadcast signal including the plurality of groups,

wherein at least two of the known data sequences are spaced 16 segments apart and have different lengths.

17. The broadcast transmitter of claim 16, wherein the RS frame comprises a plurality of packets, each 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, the header including a type field indicating a type of all packets in the payload, wherein N and M are integers, and k is equal to or greater than 0.

18. The broadcast transmitter of claim 16, wherein the FIC data is segmented into units of 35 bytes, and each 35-byte unit is carried through a corresponding segment payload.

19. The broadcast transmitter of claim 16, wherein the segment header comprises type information indicating a type of data carried in the FIC segment.

20. The broadcast transmitter of claim 16, wherein the segment header comprises error indication information indicating whether the FIC segment contains an error.