Broadcasting receiver and broadcast signal processing method

• US 8,982,869 B2
• Filed: 07/18/2011
• Issued: 03/17/2015
• Est. Priority Date: 07/02/2007
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Oh, Hyen O, Choi, In Hwan, Kwak, Kook Yeon, Kim, Byoung Gill, Song, Won Gyu, Kim, Jin Woo, Lee, Hyoung Gon
• Primary Examiner(s): Orgad, Edan
• Assistant Examiner(s): Latorre, Ivan O
• Application Number:
  US13/185,090
• Publication Number:
  US 20110280260A1
• Time in Patent Office: 1,338 Days
• Field of Search: 370/235, 370/335, 370/312, 370/313, 370/345, 370/474, 370/476, 370/487, 370/535, 375/136, 375/147, 375/238, 375/240.26, 375/265, 375/316, 704/500, 714/792
• US Class Current: 370/345
• CPC Class Codes: H03M 13/2792 Interleaver wherein interleaving is performed jointly with another technique such as puncturing, multiplexing or routing
• CPC Class Codes: H03M 13/2906 using block codes H03M13/2957 takes precedence
• CPC Class Codes: H04H 20/71 Wireless systems
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04N 19/42 characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation H04N19/635 takes precedence
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/89 involving methods or arrangements for detection of transmission errors at the decoder
• CPC Class Codes: H04N 21/2365 Multiplexing of several video streams
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams
• 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

Abstract

A digital broadcasting system which is robust against an error when mobile service data is transmitted and a method of processing data are disclosed. The mobile service data is subjected to an additional coding process and the coded mobile service data is transmitted. Accordingly, it is possible to cope with a serious channel variation while applying robustness to the mobile service data.

Claims

1. An apparatus for transmitting a broadcast signal, the apparatus comprising;

an encoder configured to encode mobile service data for Forward Error Correction (FEC);

a signaling encoder configured to encode Transmission Parameter Channel (TPC) data including transmission parameters for FEC;

a group formatter configured to form data groups including the encoded mobile service data and the encoded TPC data, each of the data groups including a plurality of data blocks and the encoded TPC data inserted into a specific data block of the plurality of data blocks;

a packet formatter configured to form data packets including data in the data groups;

a multiplexer configured to multiplex the formed data packets and main data packets including main data; and

a transmission unit configured to transmit the broadcast signal within a transmission frame, the broadcast signal including a parade of the data groups,

wherein the parade includes a collection of consecutively numbered data groups having same FEC parameters,

wherein the TPC data includes first information identifying parade to which each of the data groups belong and second information indicating a first-assigned data group number for the parade to which a first-assigned data group belongs, and

wherein each of the data groups further includes an audio signal having a parameter that indicates a length of the audio signal.

2. The apparatus of claim 1, wherein:

each of the data groups further includes a plurality of regions;

known data sequences are inserted into specific regions of the plurality of regions; and

initialization data for initializing a memory in a trellis encoder of the apparatus is inserted in front of each of the known data sequences.

3. A method for transmitting a broadcast signal, the method comprising;

encoding mobile service data for Forward Error Correction (FEC);

encoding Transmission Parameter Channel (TPC) data including transmission frame information for FEC;

forming data groups including the encoded mobile service data and the encoded TPC data, each of the data groups including a plurality of data blocks and the encoded TPC data inserted into a specific data block of the plurality of data blocks;

forming data packets including data in the data groups;

multiplexing the formed data packets and main data packets including main data; and

transmitting the broadcast signal within a transmission frame, the broadcast signal including a parade of the data groups,

wherein the parade includes a collection of consecutively numbered data groups having same FEC parameters,

wherein the TPC data further includes first information identifying a parade to which each of the data groups belong and second information indicating a first-assigned data group number for the parade to which a first-assigned data group belongs, and

wherein each of the data groups further includes an audio signal having a parameter that indicates a length of the audio signal.

4. The method of claim 3, wherein:

each of the data groups further includes a plurality of regions;

known data sequences are inserted into specific regions of the plurality of regions; and

initialization data for initializing a memory in a trellis encoder of an apparatus for transmitting is inserted in front of each of the known data sequences.