Digital broadcast system for transmitting/receiving digital broadcast data, and data processing method for use in the same

• US 8,325,766 B2
• Filed: 11/04/2011
• Issued: 12/04/2012
• Est. Priority Date: 06/26/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Song, Jae Hyung, Choi, In Hwan, Hong, Ho Taek, Kwak, Kook Yeon, Kim, Byoung Gill, Suh, Jong Yeul, Kim, Jin Pil, Song, Won Gyu, Lee, Chul Soo, Kim, Jin Woo, Lee, Hyoung Gon, Lee, Joon Hui
• Primary Examiner(s): Pezzlo, John
• Application Number:
  US13/289,914
• Publication Number:
  US 20120106675A1
• Time in Patent Office: 396 Days
• Field of Search: 370/477, 370/252, 370/328, 370/442
• US Class Current: 370/477
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• 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 21/4181 for conditional access
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/4349 by extracting from data carousels, e.g. extraction of software modules from a DVB carousel
• 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 21/43853 involving multiplex stream decryption arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/4425 Monitoring of client processing errors or hardware failure
• CPC Class Codes: H04N 21/64315 DVB-H

Abstract

The present invention is directed to a digital broadcast system and a data processing method. A broadcast signal in which mobile service data and main service data are multiplexed is transmitted and received. Then, in a broadcasting receiver, mobile service data identification information indicating whether the mobile service data of the broadcast signal provides an internet protocol (IP)-based service is parse from the broadcast signal. And the mobile service data is outputted by using the parsed mobile service data identification information.

Claims

1. A method of transmitting a broadcast signal, the method comprising:

encoding mobile data for forward error correction (FEC) to build Reed-Solomon (RS) frames according to mode information;

dividing at least one of the RS frames into portions;

Serial Concatenated Convolutional Code (SCCC) encoding mobile data in one portion of the at least one of the RS frames;

encoding signaling data for the mobile data;

forming at least one data group including the SCCC encoded mobile data, the encoded signaling data, and known data sequences, wherein the at least one data group includes data blocks with the encoded signaling data inserted into a specific one of the data blocks; and

transmitting a transmission frame including a parade of data groups, wherein the parade includes a collection of data groups and carries data of one or two of the RS frames according to the mode information,

wherein encoding the signaling data comprises;

RS encoding first signaling data of the signaling data, wherein the first signaling data includes the mode information and a number of data groups per a subframe within the transmission frame;

RS encoding second signaling data of the signaling data, wherein the second signaling data provides cross-layer information between a physical layer and an upper layer for rapid service acquisition;

interleaving the RS encoded second signaling data;

combining the first signaling data and the interleaved second signaling data; and

performing Parallel Concatenated Convolutional Code (PCCC) encoding on the combined signaling data.

2. The method of claim 1, wherein the mode information indicates the number of RS frames which are built per the parade.

3. The method of claim 2, wherein the number of RS frames is one or two.

4. The method of claim 1, wherein the second signaling data is interleaved by an interleaving block unit that includes columns of 51 bytes and a number of rows equal to the number of data groups per a subframe.

5. An apparatus for transmitting a broadcast signal, the apparatus comprising:

an encoder configured to encode mobile data for forward error correction (FEC) to build Reed-Solomon (RS) frames according to mode information;

a divider configured to divide at least one of the RS frames into portions;

a Serial Concatenated Convolutional Code (SCCC) encoder configured to SCCC encode mobile data in one portion of the at least one of the RS frames;

a signaling encoder configured to encode signaling data for the mobile data;

a group formatter configured to form at least one data group including the SCCC encoded mobile data, the encoded signaling data, and known data sequences, wherein the at least one data group includes data blocks with the encoded signaling data inserted into a specific one of the data blocks; and

a transmission unit configured to transmit a transmission frame including a parade of data groups, wherein the parade includes a collection of data groups and carries data of one or two of the RS frames according to the mode information,

wherein encoding the signaling data comprises;

RS encoding first signaling data of the signaling data, wherein the first signaling data includes the mode information and a number of data groups per a subframe within the transmission frame;

RS encoding second signaling data of the signaling data, wherein the second signaling data provides cross-layer information between a physical layer and an upper layer for rapid service acquisition;

interleaving the RS encoded second signaling data;

combining the first signaling data and the interleaved second signaling data; and

performing Parallel Concatenated Convolutional Code (PCCC) encoding on the combined signaling data.

6. The apparatus of claim 5, wherein the mode information indicates the number of RS frames which are built per the parade.

7. The apparatus of claim 6, wherein the number of RS frames is one or two.

8. The apparatus of claim 5, further comprising an interleaving block unit configured to interleave the second signaling data, wherein the interleaving block includes columns of 51 bytes and a number of rows equal to the number of data groups per subframe.