公开(公告)号：EP2137966A1

公开(公告)日：2009-12-30

申请号：EP08723716.0

申请日：2008-03-26

申请人： LG Electronics Inc.

发明人： KIM, Jong Moon ,  CHOI, In Hwan ,  KWAK, Kook Yeon ,  KIM, Byoung Gill ,  SONG, Won Gyu ,  KIM, Jin Woo ,  LEE, Hyoung Gon

IPC分类号： H04N7/015

CPC分类号： H03M13/2792 ,  H03M13/09 ,  H04L1/0041 ,  H04L7/0029 ,  H04L7/042 ,  H04L12/189 ,  H04L27/0014 ,  H04L2027/003 ,  H04N21/2383 ,  H04N21/4382 ,  H04W4/06

摘要： A digital broadcast system is disclosed. The digital broadcast system including a transmitter, a receiver, and a method for transmitting and receiving a DTV signal comprising main service data and mobile service data multiplexed with the main service data. The DTV signal results from generating a second data by de-interleaving a first data group by a DTV transmitter.

公开(公告)号：EP2143268A1

公开(公告)日：2010-01-13

申请号：EP08723790.5

申请日：2008-03-28

申请人： LG Electronics Inc.

发明人： KIM, Byoung Gill ,  CHOI, In Hwan ,  KIM, Jin Woo ,  KIM, Jong Moon ,  SONG, Won Gyu ,  LEE, Hyoung Gon ,  KWAK, Kook Yeon

IPC分类号： H04N7/015

CPC分类号： H04N21/236 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071 ,  H04L25/0232 ,  H04L25/03159 ,  H04N21/238 ,  H04N21/2389

摘要： A digital broadcast system and method of processing data are disclosed. A channel equalizer includes a frequency domain converter receiving a known data sequence, when the known data sequence is periodically inserted and transmitted in general data, and converting the received data to frequency domain data, a CIR estimator using the data being received during a known data section and known data generated by a receiving system, so as to estimate a CIR, a CIR calculator interpolating or extrapolating the CIR estimated by the CIR estimator in accordance with characteristics of the general data being received, a coefficient calculator converting the CIR being outputted from the CIR calculator to a frequency domain CIR and calculating and outputting an equalization coefficient, and a distortion compensator multiplying the equalization coefficient calculated by the coefficient calculator with the data converted to frequency domain data by the frequency domain converter, thereby compensating channel distortion.

公开(公告)号：EP2130382A1

公开(公告)日：2009-12-09

申请号：EP08723717.8

申请日：2008-03-26

申请人： LG Electronics Inc.

发明人： KIM, Jong Moon ,  CHOI, In Hwan ,  KWAK, Kook Yeon ,  KIM, Byoung Gill ,  SONG, Won Gyu ,  KIM, Jin Woo ,  LEE, Hyoung Gon

IPC分类号： H04N7/64

CPC分类号： H04N21/2353 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L7/027 ,  H04L7/042 ,  H04L27/066 ,  H04L27/2272 ,  H04N5/4401 ,  H04N5/455 ,  H04N21/2383 ,  H04N21/4382

摘要： A digital broadcast transmitter and a method of processing a DTV signal in the digital broadcast transmitter are disclosed. The digital broadcast transmitter includes a pre-processor, a first multiplexer, a post-processor, and a second multiplexer. The pre-processor includes a first interleaver, a group formatter, and a packer formatter. The first interleaver interleaves symbols corresponding to mobile service data. The group formatter maps data corresponding to the interleaved symbols into at least one region of a data group and adds place holders for main service data and non-systematic RS parity data to the data group. The packet formatter removes the place holders for the main service data and the non-systematic RS parity data, and generates mobile service data packets having data in the data group in which the place holders for the main service data and the non-systematic RS parity data are removed.