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

• US 7,975,281 B2
• Filed: 09/22/2008
• Issued: 07/05/2011
• 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, Kwak, Min Sung, Choi, In Hwan, Lee, Chul Soo, Song, Jae Hyung
• Primary Examiner(s): Kelley; Christopher
• Assistant Examiner(s): Flynn; Randy
• Application Number:
  US12/235,580
• Publication Number:
  US 20090138913A1
• Time in Patent Office: 1,016 Days
• Field of Search: 725 32- 35, 725/40, 725/62, 455/403, 455 301- 302, 375/316, 370/312
• 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 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, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the mobile service data and the signaling information table are encapsulated into at least one Reed-Solomon (RS) frame, 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;

demodulating the received broadcast signal;

extracting the signaling information table from the demodulated broadcast signal; and

acquiring basic information about the mobile service data from the signaling information table, the basic information including start time information, duration information and title information of the mobile service data,

wherein the at least one RS frame is divided into a plurality of groups, each of the groups including a portion of data included in the RS frame, regularly spaced known data sequences, the FIC data, and the TPC data, and

wherein at least two of the known data sequences are spaced 16 segments apart.

2. The method of claim 1, further comprising displaying the basic information.

3. 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.

4. The method of claim 1, wherein:

the at least one RS frame comprises a plurality of packets, each of the packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload,

the payload includes an IP datagram of the mobile service data,

the M-byte header includes a type field indicating a type of all packets in the payload,

N and M are integers, and

k is equal to or greater than 0.

5. The method of claim 1, wherein receiving the broadcast signal comprises receiving the broadcast signal by using a time-slicing method.

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, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the mobile service data and the signaling information table are encapsulated into at least one Reed-Solomon (RS) frame, 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;

a demodulator for demodulating the received broadcast signal; and

a handler for extracting the signaling information table from the demodulated broadcast signal and acquiring basic information about the mobile service data from the signaling information table, the basic information including start time information, duration information and title information of the mobile service data,

wherein the at least one of RS frame is divided into a plurality of groups, each of the groups including a portion of data included in the RS frame, regularly spaced known data sequences, the FIC data, and the TPC data, and

wherein at least two of the known data sequences are spaced 16 segments apart.

7. The broadcast receiver of claim 6, further comprising a display unit for displaying the basic information.

8. The broadcast receiver 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.

9. The broadcast receiver of claim 6, wherein:

the at least one RS frame comprises a plurality of packets, each of the packets having an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload,

the payload includes an IP datagram of the mobile service data,

the M-byte header includes a type field indicating a type of all packets in the payload,

N and M are integers, and

k is equal to or greater than 0.

10. The broadcast receiver of claim 6, wherein the tuner receives the broadcast signal by using a time-slicing method.