Broadcasting receiver and broadcast signal processing method

• US 9,584,258 B2
• Filed: 01/20/2015
• Issued: 02/28/2017
• Est. Priority Date: 07/02/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwak, Kook Yeon, Oh, Hyen O, Choi, In Hwan, 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:
  US14/600,889
• Publication Number:
  US 20150207590A1
• Time in Patent Office: 770 Days
• Field of Search: 370/235, 370/335, 370/312, 370/313, 370/345, 370/474, 370/476, 370/487, 370/535, 370/252, 370/278, 370/282, 370/329, 370/389, 375/136, 375/147, 375/238, 375/240.26, 375/265, 375/316, 714/792
• US Class Current: 1/1
• 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. A method for transmitting broadcast signals, the method comprising:

generating an FEC (Forward Error Correction) frame by encoding at least broadcast data or signaling information with an FEC code, wherein the broadcast data include at least video data or audio data and wherein the signaling information includes at least video codec information for the video data or audio codec information for the audio data;

dividing the FEC frame into a plurality of portions, wherein the plurality of portions have a same size;

interleaving data of the plurality of portions;

first encoding transmission parameters to add parity data;

second encoding the first-encoded transmission parameters at a code rate; and

transmitting the broadcast signals including a transmission frame that contains the interleaved data and the second-encoded transmission parameters,

wherein the transmission frame comprises multiple sub-frames that are concatenated in time, and

wherein the transmission parameters include FEC code information and information related to at least one sub-frame of the multiple sub-frames.

2. The method of claim 1, wherein a size of the generated FEC frame is variable.

3. The method of claim 1, wherein the broadcast data are primary broadcast data or secondary broadcast data.

4. An apparatus for transmitting broadcast signals, the apparatus comprising:

a processor to generate an FEC (Forward Error Correction) frame by encoding at least broadcast data or signaling information with an FEC code, to divide the FEC frame into a plurality of portions and to interleave data of the plurality of portions, wherein the broadcast data include at least video data or audio data, wherein the signaling information includes at least video codec information for the video data or audio codec information for the audio data, and wherein the plurality of portions have a same size;

a signaling encoder to first encode transmission parameters to add parity data and to second encode the first-encoded transmission parameters at a code rate;

and

a transmitter to transmit the broadcast signals including a transmission frame that contains the interleaved data and the second-encoded transmission parameters,

wherein the transmission frame comprises multiple sub-frames that are concatenated in time, and

wherein the transmission parameters include FEC code information and information related to at least one sub-frame of the multiple sub-frames.

5. The apparatus of claim 4, wherein a size of the generated FEC frame is variable.

6. The apparatus of claim 4, wherein the broadcast data are primary broadcast data or secondary broadcast data.