Digital broadcasting system and data processing method

• US 8,122,473 B2
• Filed: 07/29/2008
• Issued: 02/21/2012
• Est. Priority Date: 07/29/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Song, Jae Hyung, Choi, In Hwan, Suh, Jong Yeul, Kim, Jin Pil, Lee, Chul Soo
• Primary Examiner(s): Pendleton, Brian
• Assistant Examiner(s): LIN, JASON K
• Application Number:
  US12/181,510
• Publication Number:
  US 20090070811A1
• Time in Patent Office: 1,302 Days
• Field of Search: None
• US Class Current: 725/62
• CPC Class Codes: H04H 60/73 using meta-information

Abstract

The present invention relates to a digital broadcasting system and a processing data method thereof. The present invention includes acquiring a first ensemble providing service guide information for mobile service data from a broadcast signal in which the mobile service data and main service data are multiplexed, acquiring, from the first ensemble, first program table information including information which indicates that the first ensemble provides service guide information for a second ensemble, and decoding the first program table information and acquiring service guide information for mobile service data included in the second ensemble by using the decoded first program table information.

Claims

1. A data processing method for a receiving system, comprising:

receiving a broadcast signal including a fast information channel (FIC), a transmission parameter channel (TPC) being different from the FIC, and mobile service data for a Reed-Solomon (RS) frame, wherein the FIC includes cross-layer information for mobile service acquisition, wherein the TPC includes FIC version information for identifying updates of the FIC, and wherein data of the TPC is RS-encoded at a first code rate via a first path, and data of the FIC is block-interleaved after being RS-encoded at a second code rate via a second path;

decoding the RS frame from the received broadcast signal;

acquiring an ensemble identified by an ensemble identifier from the decoded RS frame;

acquiring a service map table (SMT) from the ensemble, wherein the SMT includes access information for a mobile service included in the ensemble and service type information for identifying a category of the mobile service; and

acquiring, by a decoder, the service type information indicating that service guide data of the mobile service is received through a service guide-related channel,

wherein the ensemble is carried through a parade, the parade being a collection of data groups, and the TPC further includes information for a parade repetition cycle representing a specific frequency of transmission of a parade carrying a particular ensemble,

wherein each of the data groups includes a first known data sequence and a second known data sequence, and wherein an area between the first known data sequence and the second known data sequence of each data group is filled by the TPC and FIC, and

wherein the TPC is included in each of the data groups belonging to the parade and wherein the same information for the parade repetition cycle is received repeatedly through the data groups of the parade.

2. The data processing method according to claim 1, wherein the SMT further includes an ensemble identifier identifying the ensemble.

3. The data processing method according to claim 1, wherein the SMT further includes information indicating activity status of the mobile service included in the ensemble.

4. The data processing method according to claim 1, wherein the access information comprises Internet protocol (IP) address information of the mobile service included in the ensemble.

5. The data processing method according to claim 4, wherein the IP address information comprises:

an IP address; and

address indication information indicating whether the IP address is an Ipv4 version or an Ipv6 version.

6. The data processing method according to claim 5, further comprising:

obtaining a corresponding IP datagram from the ensemble based upon the IP address of the mobile service, and decoding at least one of an audio stream and a video stream from the IP datagram.

7. The data processing method according to claim 1, wherein the access information of the mobile service comprises an Internet protocol (IP) address and a user datagram protocol (UDP) port number of each component included in the mobile service.

8. The data processing method according to claim 7, further comprising:

obtaining a corresponding IP datagram from the ensemble based upon the IP address and the UDP port number of each component, and decoding at least one of an audio stream and a video stream from the IP datagram.

9. The data processing method according to claim 1, wherein, when the service type information indicates service guide information, the access information of the mobile service comprises service guide-related channel information transmitting the service guide data.

10. The data processing method according to claim 1, further comprising:

detecting known data from the received broadcast signal; and

channel-equalizing the decoded RS frame using the detected known data.

11. The data processing method according to claim 1, further comprising recovering the RS frame, the RS frame being received during time slots corresponding to the ensemble using time-slicing.

12. A receiving system, comprising:

a signal receiving unit receiving a broadcast signal including a fast information channel (FIC), a transmission parameter channel (TPC) being different from the FIC, and mobile service data for a Reed-Solomon (RS) frame, wherein the FIC includes cross-layer information for mobile service acquisition, wherein the TPC includes FIC version information for identifying updates of the FIC, wherein data of the TPC is RS-encoded at a first code rate via a first path, and data of the FIC is block-interleaved after being RS-encoded at a second code rate via a second path;

a first decoder decoding the RS frame from the received broadcast signal; and

a second decoder for acquiring an ensemble identified by an ensemble identifier from the decoded RS frame, acquiring a service map table (SMT) from the ensemble, wherein the SMT includes access information for a mobile service included in the ensemble and service type information for identifying a category of the mobile service, and decoding the service type information indicating that service guide data of the mobile service is received through a service guide-related channel, wherein the ensemble is carried thorugh a parade, the parade being a collection of data groups, and the TPC further includes information for a parade repetition cycle representing a specific frequency of transmission of a parade carrying a particular ensemble,

wherein each of the data groups includes a first known data sequence and a second known data sequence, and wherein an area between the first known data sequence and the second known data sequence of each data group is filled by the TPC and FIC, and

wherein the TPC is included in each of the data groups belonging to the parade and wherein the same information for the parade repetition cycle is received repeatedly through the data groups of the parade.

13. The receiving system of claim 12, wherein the SMT further includes an ensemble identifier identifying the ensemble.

14. The receiving system of claim 12, wherein the SMT further includes information indicating activity status of the mobile service included in the ensemble.

15. The receiving system of claim 12, wherein the access information comprises Internet protocol (IP) address information of the mobile service included in the ensemble.

16. The receiving system of claim 15, wherein the IP address information comprises:

an IP address; and

address indication information indicating whether the IP address is an Ipv4 version or an Ipv6 version.

17. The receiving system of claim 16, wherein the second decoder obtains a corresponding IP datagram from the ensemble based upon the IP address of the mobile service, and decodes at least one of an audio stream and a video stream from the IP datagram.

18. The receiving system of claim 12, wherein the access information of the mobile service comprises an Internet protocol (IP) address and a user datagram protocol (UDP) port number of each component included in the mobile service.

19. The receiving system of claim 18, wherein the second decoder obtains a corresponding IP datagram from the ensemble based upon the IP address and the UDP port number of each component, and decodes at least one of an audio stream and a video stream from the IP datagram.

20. The receiving system of claim 12, wherein, when the service type information indicates service guide information, the access information of the mobile service comprises service guide-related channel information transmitting the service guide data.

21. The receiving system of claim 12, further comprising:

a known sequence detector detecting known data from the received broadcast signal; and

an equalizer channel-equalizing the decoded RS frame using the detected known data.

22. The receiving system of claim 12, wherein the signal receiving unit configures the RS frame by receiving the RS frame during time slots corresponding to the ensemble using time-slicing.