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

• US 8,141,119 B2
• Filed: 02/10/2010
• Issued: 03/20/2012
• Est. Priority Date: 09/21/2007
• Status: Expired due to Fees

• 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, Kwak, Min Sung
• Primary Examiner(s): Kumar, Pankaj
• Assistant Examiner(s): FLYNN, RANDY A
• Application Number:
  US12/703,619
• Publication Number:
  US 20100211850A1
• Time in Patent Office: 769 Days
• Field of Search: 725 32- 35, 725/40, 725/62, 455/403, 455 301- 302, 370/312, 375/316
• US Class Current: 725/62
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/43072 of multiple content streams on the same device
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4882 for displaying messages, e.g. warnings, reminders arrangements for providing short real-time information to substation in data switching networks H04L12/1895
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 21/6336 directed to decoder
• CPC Class Codes: H04N 21/8126 involving additional data, e.g. news, sports, stocks, weather forecasts

Abstract

A digital broadcast receiver and a control method thereof are disclosed. The control method of the digital broadcast receiver includes receiving a broadcast signal into which mobile service data and main service data are multiplexed, extracting transmission parameter channel (TPC) signaling information and fast information channel (FIC) signaling information from a data group in the received mobile service data, acquiring a program table describing virtual channel information and a service of an ensemble, which is a virtual channel group of the received mobile service data, using the extracted FIC signaling information, selectively detecting a first message descriptor mapped with time information or a second message descriptor not mapped with time information, using the acquired program table, performing a control operation to display a message defined in the detected message descriptor.

Claims

1. 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 a mobile service and on a signaling information table including access information of the mobile service to form an RS frame;

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, regularly spaced 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 wherein at least two of the known data sequences are spaced 16 segments apart; and

transmitting a broadcast signal including the plurality of groups,

wherein the signaling information table further includes basic information about the mobile service, the basic information including start time information, duration information, and title information of the mobile service.

2. The method of claim 1, 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.

3. The method of claim 1, wherein at least two of the known data sequences have different lengths.

4. The method of claim 1, wherein the 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 payload including an Internet protocol (IP) datagram of the mobile service, 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.

5. The method of claim 1, wherein the signaling information table is encapsulated with a user datagram protocol/Internet protocol (UDP/IP) header including a well-known IP address and a well-known UDP port number.

6. A broadcast transmitter comprising:

a Reed Solomon (RS) encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on a mobile service and on a signaling information table including access information of the mobile service to form an RS frame;

a group formatting means for 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, regularly spaced 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 wherein at least two of the known data sequences are spaced 16 segments apart; and

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

wherein the signaling information table further includes basic information about the mobile service, the basic information including start time information, duration information, and title information of the mobile service.

7. The broadcast transmitter of claim 6, 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.

8. The broadcast transmitter of claim 6, wherein at least two of the known data sequences have different lengths.

9. The broadcast transmitter of claim 6, wherein the 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 payload including an Internet protocol (IP) datagram of the mobile service, 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.

10. The broadcast transmitter of claim 6, wherein the signaling information table is encapsulated with a user datagram protocol/Internet protocol (UDP/IP) header including a well-known IP address and a well-known UDP port number.