公开(公告)号：US08942294B2

公开(公告)日：2015-01-27

申请号：US12261263

申请日：2008-10-30

Applicant: Yong-deok Chang ,  Joon-soo Kim ,  Sung-woo Park

Inventor： Yong-deok Chang ,  Joon-soo Kim ,  Sung-woo Park

IPC: H04N7/12 ,  H04N21/2383 ,  H04H20/46 ,  H04H40/27 ,  H04H60/07 ,  H04L1/00 ,  H04L25/03 ,  H04L27/02 ,  H04N5/44 ,  H04N21/438 ,  H04H20/42 ,  H04H20/72

CPC classification number: H04N21/2383 ,  H04H20/42 ,  H04H20/46 ,  H04H20/72 ,  H04H40/27 ,  H04H60/07 ,  H04L1/0047 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071 ,  H04L25/03006 ,  H04L27/02 ,  H04L2025/03382 ,  H04N5/4401 ,  H04N21/4382

Abstract: A digital broadcasting transmission and/or reception system having an improved reception performance and a signal-processing method thereof. A digital broadcasting transmitter comprises a TRS encoder for to TRS-encode a MPEG-2 transmission stream having null data for inserting a Known data and a TRS parity at predetermined positions, randomizer to input and randomize data stream from the TRS encoder, a null packet exchanger to replace the null data for inserting the Known data to the known data, and an encoder for encoding a data streams to which the Known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization and further uses the TRS parity for correcting error of the received signal, so that the digital broadcasting reception performance can be improved at poor multipath channels.

公开(公告)号：US08885770B2

公开(公告)日：2014-11-11

申请号：US12261397

申请日：2008-10-30

Applicant: Eui-jun Park ,  Yong-deok Chang

Inventor： Eui-jun Park ,  Yong-deok Chang

IPC: H03K9/00 ,  H04L5/12 ,  H04L1/00 ,  H04N21/4385 ,  H03M13/25 ,  H04N21/438 ,  H03M13/29 ,  H04N21/2383 ,  H03M13/35 ,  H04L27/02 ,  H04N21/2389 ,  H04N5/455 ,  H04N5/44

CPC classification number: H03M13/256 ,  H03M13/253 ,  H03M13/2936 ,  H03M13/2948 ,  H03M13/356 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/005 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/007 ,  H04L1/0071 ,  H04L1/0083 ,  H04L27/02 ,  H04N5/4401 ,  H04N5/455 ,  H04N21/2383 ,  H04N21/2389 ,  H04N21/4382 ,  H04N21/4385

Abstract: A digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof. A digital broadcasting transmitter according to the present invention includes a data pre-processor which processed robust data and generates robust data packet of predetermined format, a TS stream generator which combines robust data packet with a normal data packet to generate a TS stream of a predetermined format, a randomizer which randomizes the TS stream output from the TS stream generator, a convolution encoder which performs convolution encoding with respect to the robust data of the data output from the randomizer, and a RS encoder which performs RS encoding with respect to the data output from the convolution g encoder. Accordingly, digital broadcasting receiving performance can be improved in a poor multipath channel, while maintaining compatibility with existing transmission/reception system.

公开(公告)号：US08743996B2

公开(公告)日：2014-06-03

申请号：US12260580

申请日：2008-10-29

Applicant: Yong-deok Chang ,  Hae-joo Jeong ,  Joon-soo Kim

Inventor： Yong-deok Chang ,  Hae-joo Jeong ,  Joon-soo Kim

IPC: H03D1/00

CPC classification number: H04L25/03866 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071

Abstract: Disclosed is a digital broadcasting transmission/reception system having an improved reception performance and in a signal-processing method thereof. A digital broadcasting transmitter comprises a TS stream generator for inputting robust and normal packets having stuff bytes in predetermined positions and generating dual TS stream by inserting the robust packets between the normal packets; a randomizer for randomizing the dual TS stream; a stuff byte exchanger for replacing the stuff bytes of a randomized data streams from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performance can be improved at poor multipath channels.

Abstract translation: 公开了一种具有改善的接收性能的数字广播发射/接收系统及其信号处理方法。 数字广播发射机包括一个TS流发生器，用于在预定位置输入具有填充字节的鲁棒和正常分组，并通过在正常分组之间插入鲁棒分组来生成双TS流; 用于随机化双TS流的随机化器; 一种填充字节交换器，用于将随机化数据流的填充字节替换为预定的已知数据; 以及用于对已知数据插入到其中的数据流进行编码的编码器。 因此，本发明根据从接收侧接收到的信号检测已知数据，并使用检测到的已知数据进行同步和均衡，从而可以在恶劣的多径信道下提高数字广播接收性能。

公开(公告)号：US08670368B2

公开(公告)日：2014-03-11

申请号：US12948378

申请日：2010-11-17

Applicant: Yong-deok Chang ,  Jung-jin Kim ,  Sun-bum Han

Inventor： Yong-deok Chang ,  Jung-jin Kim ,  Sun-bum Han

IPC: H04J3/08

CPC classification number: H04L27/0008 ,  H04H20/61 ,  H04H60/41 ,  H04L5/0062 ,  H04L27/0006 ,  H04L27/0012

Abstract: A broadcast retransmitting method, a broadcast retransmitting apparatus, a relay apparatus and a broadcast retransmitting system using the same, are provided. The broadcast retransmitting apparatus includes a demodulation unit which receives and demodulates a modulated broadcast, a modulation unit which modulates the demodulated broadcast, a spectrum sensing unit which detects an available band through spectrum sensing, and a control unit which retransmits the modulated broadcast to at least one surrounding apparatus. The broadcast retransmitting method includes receiving and demodulating a broadcast which has been modulated according to a first modulation method, and modulating the demodulated broadcast according to a second modulation method different from the first modulation method; detecting an available band from an idle band through spectrum sensing; and retransmitting the broadcast which has been modulated in the second modulation method to at least one surrounding apparatus using the detected available band.

Abstract translation: 提供广播重发方法，广播重发装置，中继装置和使用其的广播重传系统。 广播重传装置包括接收和解调调制广播的解调单元，调制解调广播的调制单元，通过频谱感测检测可用频带的频谱感测单元，以及至少将调制广播重发的控制单元 一个周边设备。 广播重传方法包括：接收和解调根据第一调制方法被调制的广播，并且根据与第一调制方法不同的第二调制方法调制解调的广播; 通过频谱感测从空闲频段检测可用频带; 并且使用所检测的可用频带将已经以第二调制方法调制的广播重传到至少一个周围设备。

公开(公告)号：US08619900B2

公开(公告)日：2013-12-31

申请号：US11121065

申请日：2005-05-04

Applicant: Hae-joo Jeong ,  Yong-deok Chang ,  Eui-jun Park ,  Sung-woo Park

Inventor： Hae-joo Jeong ,  Yong-deok Chang ,  Eui-jun Park ,  Sung-woo Park

IPC: H04L27/00 ,  H04L5/12

CPC classification number: H04L1/0041 ,  H03M13/2936 ,  H04L1/0043 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071 ,  H04L27/04 ,  H04N21/23412 ,  H04N21/23611 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/44209 ,  H04N21/4425

Abstract: A digital broadcast transmitting and receiving system and a signal processing method thereof that improves the receiving performance of the system. A digital broadcast transmitter can include a randomizer to receive and randomize a data stream into a specified position of which stuff bytes are inserted, a stuff-byte exchange unit to generate known data having a predefined pattern and insert the known data into the specified position of the data stream into which the stuff bytes are inserted, an encoder to encode the data stream output from the stuff-byte exchange unit for an error correction, and a modulator and RF converter to modulate the encoded data stream, RF-convert the modulated data stream and transmit the RF-converted data. The digital broadcast receiving performance can be improved even in an inferior multi-path channel by detecting the known data from the received transmission and using the known data for synchronization and equalization in a digital broadcast receiver.

Abstract translation: 一种提高系统的接收性能的数字广播发送接收系统及其信号处理方法。 数字广播发射机可以包括随机发生器，用于接收数据流并将其随机化到插入字节的指定位置;填充字节交换单元，用于生成具有预定模式的已知数据，并将已知数据插入到 插入填充字节的数据流，用于对从填充字节交换单元输出的用于纠错的数据流进行编码的编码器，以及调制器和RF转换器来调制编码数据流，RF调制数据 流传输RF转换的数据。 通过从接收到的传输中检测已知数据并使用用于数字广播接收机中的同步和均衡的已知数据，即使在较差的多路径信道中也可以提高数字广播接收性能。

公开(公告)号：US08514892B2

公开(公告)日：2013-08-20

申请号：US11504024

申请日：2006-08-15

Applicant: Jung-pil Yu ,  Hae-joo Jeong ,  Eui-jun Park ,  Joon-soo Kim ,  Yong-sik Kwon ,  Jin-Hee Jeong ,  Yong-deok Chang ,  Kum-ran Ji ,  Jong-hun Kim

Inventor： Jung-pil Yu ,  Hae-joo Jeong ,  Eui-jun Park ,  Joon-soo Kim ,  Yong-sik Kwon ,  Jin-Hee Jeong ,  Yong-deok Chang ,  Kum-ran Ji ,  Jong-hun Kim

IPC: H04H20/28

CPC classification number: H04H60/07 ,  H03M13/151 ,  H03M13/1515 ,  H03M13/27 ,  H03M13/2966 ,  H04L1/005 ,  H04L1/0054 ,  H04L1/0065 ,  H04L1/0066 ,  H04L1/0067 ,  H04L1/007 ,  H04L1/0071 ,  H04L1/08 ,  H04L25/0226 ,  H04L2001/0093 ,  H04N5/4401 ,  H04N5/45 ,  H04N21/2383 ,  H04N21/4382

Abstract: A digital broadcasting system and method, where the digital broadcasting system includes: a transmission stream generator multiplexing a normal stream and a turbo stream to generate a dual transmission stream; a transmitter inserting an supplementary reference signal (SRS) into the dual transmission stream, processing the turbo stream to reconstitute the dual transmission stream, and outputting the reconstituted dual transmission stream; and a receiver receiving the reconstituted dual transmission stream, separately turbo decoding the turbo stream, inserting the turbo decode turbo stream into the dual transmission stream, and decoding the dual transmission stream into which the turbo decoded turbo stream has been inserted, to restore normal stream data and turbo stream data. Thus, reception sensitivity of a digital broadcasting signal can be efficiently improved.

Abstract translation: 一种数字广播系统和方法，其中所述数字广播系统包括：传输流生成器复用正常流和turbo流以生成双传输流; 发射机将辅助参考信号（SRS）插入到所述双传输流中，处理所述turbo流以重构所述双传输流，并输出所述重构的双传输流; 接收接收重构的双重传输流的接收机，分别对turbo流进行turbo解码，将turbo解码turbo流插入到双重传输流中，以及解码已经插入turbo解码的turbo流的双重传输流，以恢复正常流 数据和turbo流数据。 因此，可以有效地提高数字广播信号的接收灵敏度。

公开(公告)号：US08406347B2

公开(公告)日：2013-03-26

申请号：US12254234

申请日：2008-10-20

Applicant: Eui-jun Park ,  Yong-deok Chang ,  Yong-sik Kwon

Inventor： Eui-jun Park ,  Yong-deok Chang ,  Yong-sik Kwon

IPC: H04L27/06

CPC classification number: H04L25/02 ,  H03M13/256 ,  H03M13/2707 ,  H03M13/2732 ,  H04N21/2383 ,  H04N21/4382

Abstract: A transport stream (TS) generating apparatus, a transmitting apparatus, a receiving apparatus, a digital broadcast system having the above, and a method thereof are provided. The digital broadcast system includes a transport stream (TS) generating apparatus which generates a multi transport stream (TS) by multiplexing a normal stream and a turbo stream having a variable coding rate, a transmitting apparatus which re-constructs the multi TS by processing the turbo stream, and transmits the re-constructed multi TS, and a receiving apparatus which receives the re-constructed multi TS, and decodes the normal stream and the turbo stream respectively, to recover normal data and turbo data. Accordingly, a multi TS, which includes normal stream and a turbo stream of various coding rates, can be transmitted and received efficiently.

公开(公告)号：US08385447B2

公开(公告)日：2013-02-26

申请号：US12254141

申请日：2008-10-20

Applicant: Eui-jun Park ,  Yong-deok Chang ,  Yong-sik Kwon

Inventor： Eui-jun Park ,  Yong-deok Chang ,  Yong-sik Kwon

IPC: H04L5/12 ,  H04L23/02

CPC classification number: H04L25/02 ,  H03M13/256 ,  H03M13/2707 ,  H03M13/2732 ,  H04N21/2383 ,  H04N21/4382

Abstract: A transport stream (TS) generating apparatus, a transmitting apparatus, a receiving apparatus, a digital broadcast system having the above, and a method thereof are provided. The digital broadcast system includes a transport stream (TS) generating apparatus which generates a multi transport stream (TS) by multiplexing a normal stream and a turbo stream having a variable coding rate, a transmitting apparatus which re-constructs the multi TS by processing the turbo stream, and transmits the re-constructed multi TS, and a receiving apparatus which receives the re-constructed multi TS, and decodes the normal stream and the turbo stream respectively, to recover normal data and turbo data. Accordingly, a multi TS, which includes normal stream and a turbo stream of various coding rates, can be transmitted and received efficiently.

公开(公告)号：US08312357B2

公开(公告)日：2012-11-13

申请号：US12261921

申请日：2008-10-30

Applicant: Eui-jun Park ,  Yong-deok Chang ,  Sung-soo Park

Inventor： Eui-jun Park ,  Yong-deok Chang ,  Sung-soo Park

IPC: H03M13/00

CPC classification number: H04N21/2383 ,  H04L1/0041 ,  H04L1/0071 ,  H04L25/0224 ,  H04L2001/0093 ,  H04L2025/03382 ,  H04N19/89 ,  H04N21/23412 ,  H04N21/23608 ,  H04N21/23611 ,  H04N21/4344 ,  H04N21/4382

Abstract: A digital broadcast transmitting system and a signal processing method thereof that improves the receiving performance of the system. A digital broadcast transmitter includes a randomizer to receive and randomize a transport stream into a specified position of which stuff bytes are inserted, a replacement sequence generator to generate known data including a predefined sequence, a stuff-byte exchange unit to insert the known data into the specified position of the transport stream into which stuff bytes are inserted, an encoder to encode the transport stream output from the stuff-byte exchange unit for an error correction, and a transmission unit to modulate the encoded transport stream, RF-convert the modulated transport stream and transmit the RF-converted data. The digital broadcast receiving performance is improved even in an inferior multi-path channel by detecting the known data from the received transmission and using the known data for synchronization and equalization.

公开(公告)号：US08306158B2

公开(公告)日：2012-11-06

申请号：US12260686

申请日：2008-10-29

Applicant: Yong-deok Chang ,  Hae-joo Jeong ,  Joon-soo Kim

Inventor： Yong-deok Chang ,  Hae-joo Jeong ,  Joon-soo Kim

IPC: H04L27/06

CPC classification number: H04L25/03866 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071

Abstract: Disclosed is a digital broadcasting transmission/reception system having an improved reception performance and in a signal-processing method thereof. A digital broadcasting transmitter comprises a TS stream generator for inputting robust and normal packets having stuff bytes in predetermined positions and generating dual TS stream by inserting the robust packets between the normal packets; a randomizer for randomizing the dual TS stream; a stuff byte exchanger for replacing the stuff bytes of a randomized data streams from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performance can be improved at poor multipath channels.

Abstract translation: 公开了一种具有改善的接收性能的数字广播发射/接收系统及其信号处理方法。 数字广播发射机包括一个TS流发生器，用于在预定位置输入具有填充字节的鲁棒和正常分组，并通过在正常分组之间插入鲁棒分组来生成双TS流; 用于随机化双TS流的随机化器; 一种填充字节交换器，用于将随机化数据流的填充字节替换为预定的已知数据; 以及用于对已知数据插入到其中的数据流进行编码的编码器。 因此，本发明根据从接收侧接收到的信号检测已知数据，并使用检测到的已知数据进行同步和均衡，从而可以在恶劣的多径信道下提高数字广播接收性能。