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

• US 8,149,755 B2
• Filed: 07/22/2011
• Issued: 04/03/2012
• 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: Song, Jae Hyung, Choi, In Hwan, Suh, Jong Yeul, Kim, Jin Pil, Lee, Choon, Lee, Chul Soo
• Primary Examiner(s): PARK, JUNG H
• Application Number:
  US13/189,211
• Publication Number:
  US 20110280343A1
• Time in Patent Office: 256 Days
• Field of Search: 370/310, 370/312, 370/329, 370/345, 375/301, 375/321, 375/240.1, 375/240.25, 375/295, 375/316, 375/340, 348723-725, 714/755, 714/756, 714/758
• US Class Current: 370/312
• CPC Class Codes: H04H 40/27 specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
• 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 21/4382 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 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65
• CPC Class Codes: H04N 21/64322 IP
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]

Abstract

A digital broadcast system and a method of processing data disclose. A receiving system of the digital broadcast system may include a baseband processor, a management processor, and a presentation processor. The baseband processor receives broadcast signals including mobile service data and main service data. The mobile service data configures a RS frame, and the RS frame includes the mobile service data and at least one type of channel setting information on the mobile service data. The management processor decodes the RS frame to acquire the mobile service data and the at least one type of channel setting information on the mobile service data, then extracts position information of an SDP message. Herein, the SDP message includes Codec information for each component in the respective virtual channel from the channel setting information, thereby accessing the SDP message from the extracted position information and gathers SDP message information. The presentation processor decodes mobile service data of a corresponding component based upon the gathered SDP message information.

Claims

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

receiving, by a tuner, a broadcast signal comprising mobile service data, known data sequences, fast information channel (FIC) data and transmission parameter channel (TPC) data;

demodulating, by a demodulator, the received broadcast signal;

compensating, by an equalizer, a channel distortion of the demodulated broadcast signal; and

decoding a Reed-Solomon (RS) frame including mobile service data in the channel distortion compensated broadcast signal,

wherein the RS frame belongs to one of a primary ensemble and a secondary ensemble, wherein the FIC data includes information for rapid mobile service acquisition, wherein the TPC data includes version information for indicating an update of the FIC data and a parade identifier for identifying a parade which carries at least one of the primary ensemble and the secondary ensemble,

wherein the primary ensemble includes a first service map table and the secondary ensemble includes a second service map table,

wherein the first service map table comprises a first ensemble identifier to identify the primary ensemble and the second service map table comprises a second ensemble identifier to identify the secondary ensemble, and

wherein the first and second ensemble identifiers include the parade identifier, respectively.

2. The method of claim 1, wherein a most significant bit of the first ensemble identifier is set to 0.

3. The method of claim 1, wherein a most significant bit of the second ensemble identifier is set to 1.

4. The method of claim 1, wherein a least significant 7 bits of the first ensemble identifier correspond to the parade identifier.

5. The method of claim 1, wherein a least significant 7 bits of the second ensemble identifier correspond to the parade identifier.

6. A broadcast receiving system comprising:

a tuner for receiving a broadcast signal comprising mobile service data, known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data;

a demodulator for demodulating the received broadcast signal;

an equalizer for compensating a channel distortion of the demodulated broadcast signal; and

a Reed-Solomon (RS) frame decoder for decoding an RS frame including mobile service data in the channel distortion compensated broadcast signal,

wherein the RS frame belongs to one of a primary ensemble and a secondary ensemble, wherein the FIC data includes information for rapid mobile service acquisition, wherein the TPC data includes version information for indicating an update of the FIC data and a parade identifier for identifying a parade which carries at least one of the primary ensemble and the secondary ensemble,

wherein the primary ensemble includes a first service map table and the secondary ensemble includes a second service map table,

wherein the first service map table comprises a first ensemble identifier to identify the primary ensemble and the second service map table comprises a second ensemble identifier to identify the secondary ensemble, and

wherein the first and second ensemble identifiers include the parade identifier, respectively.

7. The broadcast receiving system of claim 6, wherein a most significant bit of the first ensemble identifier is set to 0.

8. The broadcast receiving system of claim 6, wherein a most significant bit of the second ensemble identifier is set to 1.

9. The broadcast receiving system of claim 6, wherein a least significant 7 bits of the first ensemble identifier correspond to the parade identifier.

10. The broadcast receiving system of claim 6, wherein a least significant 7 bits of the second ensemble identifier correspond to the parade identifier.