公开(公告)号：KR20090043098A

公开(公告)日：2009-05-06

申请号：KR20070108753

申请日：2007-10-29

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREAN BROADCASTING SYSTEM

Inventor： BAE BYUNG JUN ,  LEE YONG TAE ,  KIM GEON ,  PARK SO RA ,  EUM HO MIN ,  PARK SUNG IK ,  LEE JAE YOUNG ,  SEO JAE HYUN ,  KIM HEUNG MOOK ,  LIM JONG SOO ,  LEE SOO IN ,  KWON TAE HOON ,  MOK HA GYUN

IPC: H04N17/04

CPC classification number: H04N17/04 ,  H04B1/1027 ,  H04H20/26 ,  H04H2201/11 ,  H04N5/44513

Abstract: 본 발명은, DMB 전송신호 품질 측정 장치 및 그 방법과, 그를 이용한 DMB 방송 수신 시스템에 관한 것으로서, 방송망을 통하여 수신된 DMB 전송신호로부터 에러 보정 전에 직교변조 신호(예를 들면, I/Q 신호)를 생성하여 신호 품질을 측정함으로써, 신호 품질의 정확성을 높이고자 한다.
이를 위하여, 본 발명은, DMB 전송신호 품질 측정 장치에 있어서, DMB 전송신호를 수신하여 디지털 IF(Intermediate Frequency) 신호로 변환하기 위한 수신 처리 수단; 상기 디지털 IF 신호를 복조하여 직교변조 신호를 생성하기 위한 복조 수단; 및 상기 직교변조 신호를 이용하여 신호품질 측정값을 구하기 위한 신호품질 측정 수단을 포함한다.
DMB, 지상파 DMB, RF 신호 분석, 직교변조 신호, I/Q 신호, 신호품질 측정

Abstract translation: 本发明中，DMB传输的信号质量测量的装置和涉及一种方法和，DMB广播使用同一接收系统，（例如，I / Q信号）从DMB传输信号误差校正之前正交调制的信号经由广播网络接收到的 通过测量信号质量来提高信号质量的准确性。

公开(公告)号：WO2013062319A3

公开(公告)日：2013-06-20

申请号：PCT/KR2012008781

申请日：2012-10-24

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LIM JONG SOO ,  KWON SUN HYOUNG ,  KIM HEUNG MOOK ,  HUR NAMHO

IPC: H04L27/26

CPC classification number: H04L27/20

Abstract: First and second input signals to be transmitted are separately modulated based on symbol mapping. A phase value is selectively adjusted for the modulated first and second input signals. The selectively phase-adjusted first and second input signals are separately angle modulated. The angle-modulated first and second input signals are transmitted.

Abstract translation: 要发送的第一和第二输入信号是基于符号映射单独调制的。 对调制的第一和第二输入信号选择性地调整相位值。 选择性地相位调整的第一和第二输入信号被分开角度调制。 角度调制的第一和第二输入信号被发送。

公开(公告)号：WO2008147151A2

公开(公告)日：2008-12-04

申请号：PCT/KR2008003072

申请日：2008-05-30

Applicant: KOREA ELECTRONICS TELECOMM ,  SEO JAE HYUN ,  LIM HYOUNG SOO ,  LEE YONG TAE ,  KIM HEUNG MOOK ,  PARK SUNG IK ,  LIM JONG SOO ,  LEE SOO IN

Inventor： SEO JAE HYUN ,  LIM HYOUNG SOO ,  LEE YONG TAE ,  KIM HEUNG MOOK ,  PARK SUNG IK ,  LIM JONG SOO ,  LEE SOO IN

IPC: H04N7/12 ,  H04N5/00

CPC classification number: H04N21/23614 ,  H04N21/234309 ,  H04N21/23439 ,  H04N21/2365 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/4122 ,  H04N21/4126 ,  H04N21/41407 ,  H04N21/4347 ,  H04N21/4382 ,  H04N21/64315

Abstract: The present invention relates to a transmission method, a transmission apparatus, a reception method, and a reception apparatus of a digital broadcasting signal that can add frame header information to a front portion of a transmission frame in a transmission system for digital broadcasting to thereby determine a different transmission mode, modulation level, hierarchical modulation, error correction code, and the like for each temporally different transmission frame, and a transmission frame structure thereof. The transmission frame structure includes a frame header containing multiplexing information of the transmission frame, and a frame body containing data information associated with a service provided by the transmission frame. Also, the frame header may include a frame synchronization signal unit including synchronization signal information for extracting a start position of the transmission frame and a frame information unit including multiplexing information of data contained in the transmission frame. The multiplexing information denotes information associated with a transmission mode, a modulation level, a hierarchical modulation, and an error correction code of the data contained in the transmission frame.

Abstract translation: 本发明涉及数字广播信号的发送方法，发送装置，接收方法和接收装置，该数字广播信号可以将帧头信息添加到用于数字广播的发送系统中的发送帧的前部，从而确定 对于每个时间上不同的传输帧，不同的传输模式，调制级别，分级调制，纠错码等，以及其传输帧结构。 传输帧结构包括包含传输帧的复用信息的帧报头和包含与由传输帧提供的服务相关联的数据信息的帧体。 此外，帧头可以包括帧同步信号单元，其包括用于提取发送帧的开始位置的同步信号信息和包括复用传输帧中包含的数据的信息的帧信息单元。 复用信息表示与发送帧中包含的数据的发送模式，调制等级，分级调制和纠错码相关的信息。

公开(公告)号：WO2011052898A3

公开(公告)日：2011-11-03

申请号：PCT/KR2010006743

申请日：2010-10-04

Applicant: KOREA ELECTRONICS TELECOMM ,  LIM HYOUNGSOO ,  KIM HEUNG MOOK

Inventor： LIM HYOUNGSOO ,  KIM HEUNG MOOK

IPC: H04B7/005

CPC classification number: H04L27/04 ,  H04L1/0003 ,  H04L1/004 ,  H04L27/183 ,  H04L27/3488 ,  H04W52/26

Abstract: Provided are an apparatus and method for improving high-power signal receiving performance using low-power signals. The apparatus and the method of the present invention hierarchically modulate primary service data and supplementary information data for supplementing the primary service data, and transmit the modulated data. The primary service data can be modulated into high-power signals and transmitted, and the supplementary information data can be modulated into low-power signals and transmitted.

Abstract translation: 提供了一种使用低功率信号提高高功率信号接收性能的设备和方法。 本发明的设备和方法分级地调制用于补充主要业务数据的主要业务数据和补充信息数据，并发送调制后的数据。 主业务数据可以调制成高功率信号进行传输，补充信息数据可以调制成低功率信号进行传输。

公开(公告)号：WO2008147152A3

公开(公告)日：2009-01-22

申请号：PCT/KR2008003073

申请日：2008-05-30

Applicant: KOREA ELECTRONICS TELECOMM ,  LIM HYOUNG SOO ,  SHIN HYUN-CHOOL ,  SEO JAE HYUN ,  KIM HEUNG MOOK ,  LEE YONG TAE ,  PARK SUNG IK ,  LIM JONG SOO ,  LEE SOO IN

Inventor： LIM HYOUNG SOO ,  SHIN HYUN-CHOOL ,  SEO JAE HYUN ,  KIM HEUNG MOOK ,  LEE YONG TAE ,  PARK SUNG IK ,  LIM JONG SOO ,  LEE SOO IN

IPC: H04N7/12

CPC classification number: H04H20/42 ,  H04H20/72 ,  H04H40/18 ,  H04H60/07 ,  H04L1/0003 ,  H04L1/0017 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/04 ,  H04L2001/0093 ,  H04L2001/0098 ,  H04N21/2343 ,  H04N21/234327

Abstract: The present invention relates to a method and apparatus for transmitting digital broadcasting signals and a method and apparatus for receiving digital broadcasting signals that divide a stream into a plurality of layers according to characteristics of the stream, that independently process the layers, and that dynamically allocate frequencies on the basis of the processed signals. A method of transmitting digital broadcasting signals includes dividing a single stream into a plurality of layers according to characteristics of the stream; performing encoding and mapping on each of the layers; and dynamically allocating a frequency to each of the layers on the basis of the number of symbols for each layer.

Abstract translation: 本发明涉及一种用于发送数字广播信号的方法和装置，以及用于接收数字广播信号的方法和装置，所述数字广播信号根据流的特性将流划分成多个层，其独立地处理这些层，并且动态分配 基于处理的信号的频率。 一种发送数字广播信号的方法包括根据流的特征将单个流划分成多个层; 在每个层上执行编码和映射; 并且基于每个层的符号数量动态地将频率分配给每个层。

公开(公告)号：WO2011159103A2

公开(公告)日：2011-12-22

申请号：PCT/KR2011004396

申请日：2011-06-16

Applicant: KOREA ELECTRONICS TELECOMM ,  UNIV NAT CHONNAM IND FOUND ,  BAE JAE HWUI ,  LEE GWANG SOON ,  LEE HYUN ,  LEE BONG HO ,  KIM YOUNG SU ,  SONG YUN JEONG ,  LEE SOO IN ,  JUNG TAE JIN ,  KIM JUN HO ,  KIM HO JUN ,  HUR NAMHO ,  LIM HYOUNG SOO ,  SEO JAE HYUN ,  KIM HEUNG MOOK

Inventor： BAE JAE HWUI ,  LEE GWANG SOON ,  LEE HYUN ,  LEE BONG HO ,  KIM YOUNG SU ,  SONG YUN JEONG ,  LEE SOO IN ,  JUNG TAE JIN ,  KIM JUN HO ,  KIM HO JUN ,  HUR NAMHO ,  LIM HYOUNG SOO ,  SEO JAE HYUN ,  KIM HEUNG MOOK

IPC: H04B7/04

CPC classification number: H04B7/0443 ,  H04B7/0682 ,  H04L27/0008 ,  H04L27/367

Abstract: Disclosed is a broadcast data transmission system. Said broadcast data transmission system transmits broadcast data by using a plurality of transmission antennas and a plurality of receiving antennas. A broadcast data transmission device comprised in the broadcast data transmission system determines different modulation techniques for each transmission antenna, determines different kinds of transmission power for each data stream according to the determined modulation techniques, and determines different precoding vectors.

Abstract translation: 公开了一种广播数据传输系统。 所述广播数据传输系统通过使用多个发送天线和多个接收天线发送广播数据。 包含在广播数据传输系统中的广播数据传输设备为每个发射天线确定不同的调制技术，根据确定的调制技术确定每个数据流的不同种类的发射功率，并且确定不同的预编码矢量。

公开(公告)号：WO2009075468A3

公开(公告)日：2010-07-22

申请号：PCT/KR2008005979

申请日：2008-10-10

Applicant: KOREA ELECTRONICS TELECOMM ,  EUM HO MIN ,  LIM HYOUNG SOO ,  LEE YONG TAE ,  KIM HEUNG MOOK ,  LIM JONG SOO

Inventor： EUM HO MIN ,  LIM HYOUNG SOO ,  LEE YONG TAE ,  KIM HEUNG MOOK ,  LIM JONG SOO

IPC: H04B7/14

CPC classification number: H04B7/155 ,  H04W56/0035

Abstract: A repeater converts a frequency of a received signal based on a local oscillating frequency and transmits a transmitting signal of a frequency that is different from the frequency of the received signal. Here, the local oscillating frequency includes a local oscillating error that may be different in a plurality of repeaters. Accordingly, the repeater cancels the local oscillating frequency error itself in a frequency conversion so that transmitting frequencies between the plurality of repeaters may be identical.

Abstract translation: 中继器基于本地振荡频率转换接收信号的频率，并且发送与接收信号的频率不同的频率的发送信号。 这里，本地振荡频率包括在多个中继器中可能不同的本地振荡误差。 因此，中继器在频率转换中抵消本地振荡频率误差本身，使得多个转发器之间的发送频率可以相同。

公开(公告)号：CA2708745C

公开(公告)日：2014-09-30

申请号：CA2708745

申请日：2008-10-10

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： EUM HO MIN ,  LIM HYOUNG SOO ,  LEE YONG TAE ,  KIM HEUNG MOOK ,  LIM JONG SOO

IPC: H04B7/14

Abstract: A repeater converts a frequency of a received signal based on a local oscillating frequency and transmits a transmitting signal of a frequency that is different from the frequency of the received signal. Here, the local oscillating frequency includes a local oscillating error that may be different in a plurality of repeaters. Accordingly, the repeater cancels the local oscillating frequency error itself in a frequency conversion so that transmitting frequencies between the plurality of repeaters may be identical.

公开(公告)号：CA2708745A1

公开(公告)日：2009-06-18

申请号：CA2708745

申请日：2008-10-10

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： EUM HO MIN ,  LIM HYOUNG SOO ,  LEE YONG TAE ,  KIM HEUNG MOOK ,  LIM JONG SOO

IPC: H04B7/14

Abstract: A repeater converts a frequency of a received signal based on a local oscillating frequency and transmits a transmitting signal of a frequency that is different from the frequency of the received signal. Here, the local oscillating frequency includes a local oscillating error that may be different in a plurality of repeaters. Accordingly, the repeater cancels the local oscillating frequency error itself in a frequency conversion so that transmitting frequencies between the plurality of repeaters may be identical.

公开(公告)号：CA2697008A1

公开(公告)日：2009-02-26

申请号：CA2697008

申请日：2008-08-20

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PARK SUNG IK ,  KIM HEUNG MOOK ,  LIM JONG-SOO ,  LEE SOO IN

IPC: H04B7/14

Abstract: The present invention relates to an on-channel repeating apparatus and method. An embodiment of the present invention provides an on-channel repeating method including: subtracting a replica of a feedback signal from a signal received from a main transmitter or another repeating apparatus; demodulating and equalizing the signal to remove noise, a multipath signal, and the remaining feedback signal from the signal; inserting identification signal having good correlation properties into the signal; modulating the signal; and transmitting the modulated signal. Another embodiment of the present invention provides an on-channel repeating apparatus including: a unit that converts signals received from a main transmitter or another repeating apparatus into signals in a predetermined band; a unit that generates identification signals having good correlation properties; a unit that generates a replica from the signals in the predetermined band and the identification signal, and then removes a feedback signal; a unit that demodulates a signal from which the feedback signal is removed; a unit that equalizes the demodulated signal to remove noise, a multipath signal, and the remaining feedback signal therefrom; a unit that inserts the identification signal into the equalized signal; and a unit that modulates the signal having the identification signal inserted thereinto and transmits the modulated signal. According to the present invention, the repeating apparatus repeats output signals that have a small time delay and whose distortion is corrected. Therefore, it is possible to improve the utilization of limited frequency sources, and reduce investment in achieving a repeating apparatus.