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

• US 8,014,333 B2
• Filed: 08/25/2008
• Issued: 09/06/2011
• 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: Lee, Choon, Suh, Jong Yeul, Choi, In Hwan, Lee, Chul Soo, Kim, Jin Pil, Song, Jae Hyung
• Primary Examiner(s): PARK, JUNG H
• Application Number:
  US12/198,025
• Publication Number:
  US 20090052580A1
• Time in Patent Office: 1,107 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 transmitting broadcast data in a digital broadcast transmitting system, the method comprising:

Reed Solomon-Cyclic Redundancy Check (RS-CRC) encoding, by a Reed-Solomon (RS) frame encoder, mobile data to build at least one of a primary RS frame belonging to a primary ensemble and a secondary RS frame belonging to a secondary ensemble;

mapping the RS-CRC encoded mobile data into data groups and adding known data sequences, a portion of fast information channel (FIC) data, and transmission parameter channel (TPC) data to each of the data groups, wherein the FIC data includes information for rapid mobile service acquisition, and wherein the TPC data includes version information for indicating an update of the FIC data and a parade identifier to identify a parade which carries at least one of the primary ensemble and the secondary ensemble;

multiplexing data in the data groups and main data; and

transmitting a transmission frame including the multiplexed data,

wherein the FIC data are divided into a plurality of FIC segment payloads, and each FIC segment including an FIC segment header and one of the plurality of FIC segment payloads is transmitted in each of the data groups,

wherein the primary ensemble includes at least one mobile service and a first service map table and the secondary ensemble includes at least one mobile service and 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 digital broadcast transmitting system comprising:

a Reed-Solomon (RS) frame encoder for Reed Solomon-Cyclic Redundancy Check (RS-CRC) encoding mobile data to build at least one of a primary RS frame belonging to a primary ensemble and a secondary RS frame belonging to a secondary ensemble;

a group formatting means for mapping the RS-CRC encoded mobile data into data groups and adding known data sequences, a portion of fast information channel (FIC) data, and transmission parameter channel (TPC) data to each of the data groups, wherein the FIC data includes information for rapid mobile service acquisition, and wherein the TPC data includes version information for indicating an update of the FIC data and a parade identifier to identify a parade which carries at least one of the primary ensemble and the secondary ensemble;

a multiplexing means for multiplexing data in the data groups and main data; and

a transmitting means for transmitting a transmission frame including the multiplexed data,

wherein the FIC data are divided to a plurality of FIC segment payloads, and each FIC segment including an FIC segment header and one of the plurality of FIC segment payloads is transmitted in each of the data groups,

wherein the primary ensemble includes at least one mobile service and a first service map table and the secondary ensemble includes at least one mobile service and 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 digital broadcast transmitting system of claim 6, wherein a most significant bit of the first ensemble identifier is set to 0.

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

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

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