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

• US 8,276,178 B2
• Filed: 08/25/2008
• Issued: 09/25/2012
• Est. Priority Date: 08/24/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Song, Young Hun, Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung, Lee, Sang Hyup
• Primary Examiner(s): Goodarzi, Nasser
• Assistant Examiner(s): HSIUNGFEI, PENG
• Application Number:
  US12/198,006
• Publication Number:
  US 20090055886A1
• Time in Patent Office: 1,492 Days
• Field of Search: None
• US Class Current: 725/62
• CPC Class Codes: H04H 60/73 using meta-information
• CPC Class Codes: H04H 60/91 Mobile communication networks for accessing the Internet H04H60/85
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/414 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 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 5/50 Tuning indicators; Automatic tuning control

Abstract

A digital broadcast receiver and a control method thereof are disclosed. The digital broadcast receiver includes a reception unit for receiving a broadcast signal which mobile service data and main service data are multiplexed, an extractor for extracting transmission parameter channel signaling information and fast information channel signaling information from a data group in the received mobile service data, an acquirer for acquiring a program table describing virtual channel information and a service of an ensemble by using the extracted fast information channel signaling information, the ensemble being a virtual channel group of the received mobile service data, a detector for detecting a descriptor defining a telephone number system corresponding to the mobile service data by using the acquired program table, and a controller for controlling such that a telephone number of the telephone number system of the detected descriptor and the mobile service data are displayed.

Claims

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

receiving a broadcast signal comprising mobile service data, a service map table (SMT) including access information of the mobile service data, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition, wherein the TPC data includes FIC version information for indicating an update of the FIC data, wherein the FIC data and the SMT each further include status information of the mobile service data, and wherein the status information indicates whether the mobile service data is active;

demodulating the received broadcast signal;

acquiring the status information from at least the FIC data or the SMT included in the demodulated broadcast signal; and

identifying a status of the mobile service data using the acquired status information,

wherein the mobile service data is packaged into at least one RS frame belonging to an ensemble, the ensemble including the SMT, wherein the at least one RS frame comprises a plurality of packets, each of the plurality of packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, the M-byte header including type information which indicates a type of data in the (N-M-k)-byte payload, wherein a payload of at least one of the plurality of packets includes an IP datagram of the mobile service data, wherein N and M are integers, and k is equal to or greater than 0.

2. The method of claim 1, wherein the status information further indicates whether the mobile service data is hidden or not.

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 at least two of the known data sequences have different lengths.

4. The method of claim 3, 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.

5. A broadcast receiver comprising:

a tuner for receiving a broadcast signal comprising mobile service data, a service map table (SMT) including access information of the mobile service data, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition, wherein the TPC data includes FIC version information for indicating an update of the FIC data, wherein the FIC data and the SMT each further include status information of the mobile service data, and wherein the status information indicates whether the mobile service data is active;

a demodulator for demodulating the received broadcast signal; and

a handler for acquiring the status information from at least the FIC data or the SMT included in the demodulated broadcast signal and identifying a status of the mobile service data using the acquired status information,

wherein the mobile service data is packaged into at least one RS frame belonging to an ensemble, the ensemble including the SMT, wherein the at least one RS frame comprises a plurality of packets, each of the plurality of packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, the M-byte header including type information which indicates a type of data in the (N-M-k)-byte payload, wherein a payload of at least one of the plurality of packets includes an IP datagram of the mobile service data, wherein N and M are integers, and k is equal to or greater than 0.

6. The broadcast receiver of claim 5, wherein the status information further indicates whether the mobile service data is hidden or not.

7. The broadcast receiver of claim 5, 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 at least two of the known data sequences have different lengths.

8. The broadcast receiver of claim 7, 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.

9. 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 generating at least one RS frame belonging to an ensemble, the ensemble comprising a service map table (SMT) which includes access information of the mobile service data;

mapping the at least one RS frame into a plurality of groups, wherein each of the plurality of groups includes a portion of data included in the at least one RS frame, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes information for rapid mobile service acquisition, 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 the FIC data and the SMT further include status information of the mobile service data,

wherein the status information indicates whether the mobile service data is active, and

wherein the at least one RS frame comprises a plurality of packets, each of the plurality of packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, the M-byte header including type information indicating a type of data in the (N-M-k)-byte payload, wherein a payload of at least one of the plurality of packets includes an IP datagram of the mobile service data, wherein N and M are integers, and k is equal to or greater than 0.

10. The method of claim 9, wherein the status information further indicates whether the mobile service data is hidden or not.

11. The method of claim 9, wherein at least two of the known data sequences are spaced 16 segments apart and at least two of the known data sequences have different lengths.

12. The method of claim 9, 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.

13. A broadcast transmitter comprising:

a Reed Solomon (RS) encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and generating at least one RS frame belonging to an ensemble, the ensemble comprising a service map table (SMT) which includes access information of the mobile service data,

wherein the at least one RS frame is mapped into a plurality of groups, wherein each of the plurality of groups includes a portion of data included in the at least one RS frame, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) 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; and

a transmitter for transmitting a broadcast signal including the plurality of groups,

wherein the FIC data and the SMT further include status information of the mobile service data,

wherein the status information indicates whether the mobile service data is active, and

wherein the at least one RS frame comprises a plurality of packets, each of the plurality of packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, the M-byte header including type information indicating a type of data in the (N-M-k)-byte payload, wherein a payload of at least one of the plurality of packets includes an IP datagram of the mobile service data, wherein N and M are integers, and k is equal to or greater than 0.

14. The broadcast transmitter of claim 13, wherein the status information further indicates whether the mobile service data is hidden or not.

15. The broadcast transmitter of claim 13, wherein at least two of the known data sequences are spaced 16 segments apart and at least two of the known data sequences have different lengths.

16. The broadcast transmitter of claim 13, 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.