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121.发明公开
公开(公告)号：KR1020100089784A
公开(公告)日：2010-08-12
申请号：KR1020100009848
申请日：2010-02-03
Applicant: 한국전자통신연구원
CPC classification number: H04N21/2368 , H04N21/234327 , H04N21/2362 , H04N21/2365 , H04N21/4345 , H04N21/631
Abstract: PURPOSE: A method of transmitting a signal, a device of transmitting a signal, a method of receiving a signal and a device of receiving a signal for a DMB(Digital Multimedia Broadcasting) service are provided to conveniently maintain the compatibility between DMB services which respectively use a single layer and multiple layers by signaling the connectivity among streams in a DMB service. CONSTITUTION: An SL(Sync Layer) packetizer(140) creates each SL packet through the reception of an improved layer elementary stream and a base layer elementary stream. A PES(Packetized Elementary Stream) packet device(160) converts the each SL packet into a PES. A first TS(Transport Stream) multiplexer(170) outputs a base layer transport stream through the multiplexing of the PES packet. A second TS multiplexer(171) outputs an improved layer TS through the multiplexing of the PES packet.
Abstract translation: 目的：提供发送信号的方法，发送信号的装置，接收信号的方法和接收DMB（数字多媒体广播）业务的信号的装置，以方便地维护分别在DMB业务之间的兼容性 通过信令DMB服务中的流之间的连接来使用单层和多层。 构成：SL（同步层）分组器（140）通过接收改进的层基本流和基本层基本流来创建每个SL分组。 PES（分组化基本流）分组设备（160）将每个SL分组转换成PES。 第一TS（传输流）复用器（170）通过PES分组的复用来输出基本层传输流。 第二TS多路复用器（171）通过PES分组的复用来输出改进的层TS。
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公开(公告)号：KR100964382B1
公开(公告)日：2010-06-17
申请号：KR1020080067448
申请日：2008-07-11
Applicant: 한국전자통신연구원
CPC classification number: H04L23/02 , H04H20/95 , H04L5/0016 , H04L5/0048 , H04L25/0226
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公开(公告)号：KR1020100039117A
公开(公告)日：2010-04-15
申请号：KR1020080098343
申请日：2008-10-07
Applicant: 한국전자통신연구원
IPC: H04N21/266 , H04N21/462
CPC classification number: H04N7/1675 , H04H60/07 , H04H60/14 , H04L65/4076 , H04L65/602 , H04N21/234327 , H04N21/23897 , H04N21/26606 , H04N21/41407 , H04N21/4382 , H04N21/6131 , H04N21/64315 , H04N21/64792
Abstract: PURPOSE: A transmission and reception method and a transmission and reception apparatus providing a conditional access broadcasting service is provided to offer the conditional access broadcasting service for a pay-TV service. CONSTITUTION: A transmission and reception apparatus comprises the following: an encoder(110) encoding data from a conditional access subscriber to form a control word for scrambling, and converting the data into a condition control and management message; a first multiplexer(140) forming a final stream by multiplexing a basic section stream and the condition control and management message; a second multiplexer(150) multiplexing the final stream and a reinforced section stream; and a modulator(160) modulating the result from the second multiplexer.
Abstract translation: 目的：提供一种发送和接收方法以及提供条件接收广播业务的发送和接收设备，为付费电视服务提供条件接收广播服务。 构成：发送接收装置包括：编码器（110），对来自条件接入用户的数据进行编码，形成用于加扰的控制字，并将该数据转换为条件控制和管理消息; 第一多路复用器（140），通过复用基本部分流和条件控制和管理消息来形成最终流; 多路复用最终流和加强段流的第二多路复用器（150）; 以及调制器（160），调制来自第二多路复用器的结果。
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公开(公告)号：KR100941758B1
公开(公告)日：2010-02-11
申请号：KR1020070131295
申请日：2007-12-14
Applicant: 한국전자통신연구원
IPC: H04N21/236
Abstract: 디지털 멀티미디어 방송의 다중화 장치는 제1 품질의 서비스를 복원하기 위한 제1 스트림 및 제1 스트림에 부가하여 제1 품질보다 높은 제2 품질의 서비스를 복원하기 위한 제2 스트림을 수신한다. 다중화 장치는 제1 스트림의 디코딩 기준 시간과 제2 스트림의 디코딩 기준 시간을 각각 인지한다. 여기서 다중화 장치는 제1 스트림의 디코딩 기준 시간과 제2 스트림의 디코딩 기준 시간을 제1 스트림의 디코딩 기준 시간과 제2 스트림의 디코딩 기준 시간의 차이가 기준값 이하로 되도록 제1 시간과 제2 시간으로 각각 설정한다. 또한 다중화 장치는 제1 시간에 따라 상기 제1 스트림을 포함하는 제1 프레임을 생성하고, 제2 시간에 따라 상기 제2 스트림을 포함하는 제2 프레임을 생성한다.
디지털 멀티미디어 방송, DMB, 계층 변조, 앙상블, 고품질 비디오 서비스-
公开(公告)号：KR100933054B1
公开(公告)日：2009-12-21
申请号：KR1020070127004
申请日：2007-12-07
Applicant: 한국전자통신연구원
IPC: H04N21/63 , H04N21/238
Abstract: A method for transmitting and receiving a broadcasting signal is provided to request high efficient transmission while making compatibility with an existing digital broadcasting signal possible, thereby providing a high quality service. A video signal of a broadcasting signal is layered into a basic layer video elementary stream and an enhanced layer video elementary stream. The basic layer video elementary stream and the enhanced layer video elementary stream are packetized into a basic layer video packet and an enhanced layer video packet. A basic layer transmission stream is generated by multiplexing the basic layer video packet with a basic layer audio packet. The basic layer transmission stream and the enhanced layer video packet are transmitted.
Abstract translation: 提供一种用于发送和接收广播信号的方法，以便在与现有数字广播信号可能的兼容的同时请求高效率的传输，从而提供高质量的服务。 广播信号的视频信号被分层为基本层视频基本流和增强层视频基本流。 基本层视频基本流和增强层视频基本流被打包成基础层视频分组和增强层视频分组。 基本层传输流是通过将基本层视频包与基本层音频包复用而生成的。 基本层传输流和增强层视频分组被传输。
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Patent Agency Ranking126.发明授权직교주파수 분할 다중 전송 시스템에서 수신 신호의 채널등화 장치 및 방법, 및 이를 적용한 디엠비 수신장치 有权직교주파수분할다중전송시스템에서수신신호의채널등화장치및방법，및이를적용한디엠비수신장치
公开(公告)号：KR100930792B1
公开(公告)日：2009-12-09
申请号：KR1020070090977
申请日：2007-09-07
Applicant: 한국전자통신연구원
Abstract: An apparatus and a method for equalizing the reception channel in an OFDM(Orthogonal Frequency Division Multiplexing) transmission system and a DMB(Digital Multimedia Broadcasting) receiving apparatus applying the same are provided to improve the performance of mobile reception in a transmission system in which pilot signal is not used. A channel estimator(520) estimates channel as a symbol unit with the reference signal received from the standard signal creation part(550). A channel filtering part(530) removes the noises of the presumed channel value. A channel equalization part(540) equalizes the channel by using the estimation channel value. The channel estimator estimates the PRS(Phase Reference Symbol) of the received frame by the reference signal.
Abstract translation: 提供了一种用于在OFDM（正交频分复用）传输系统中均衡接收信道的设备和方法以及应用该设备和方法的DMB（数字多媒体广播）接收设备，以改善传输系统中的移动接收的性能，在该传输系统中， 信号未被使用。 信道估计器（520）将信道估计为具有从标准信号创建部分（550）接收的参考信号的符号单元。 信道滤波部分（530）去除推测信道值的噪声。 信道均衡部分（540）通过使用估计信道值来对信道进行均衡。 信道估计器通过参考信号估计接收帧的PRS（相位参考符号）。
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公开(公告)号：KR1020090122096A
公开(公告)日：2009-11-26
申请号：KR1020080067448
申请日：2008-07-11
Applicant: 한국전자통신연구원
CPC classification number: H04L23/02 , H04H20/95 , H04L5/0016 , H04L5/0048 , H04L25/0226
Abstract: PURPOSE: A transmitting/receiving method and device for a digital multimedia broadcasting is provided to offer high quality service in high speed movement by applying the OFDM-CDMA transmission technique to the digital multimedia broadcasting system. CONSTITUTION: The pilot signal is generated by mapping the transferred information with the orthogonal code(S610). The pilot signal is diffused to the frequency domain(S630). The expanded pilot signal is modulated and transmitted. The transferred information comprises the transmission parameter for demodulating the received signal by the receiving device. The pilot signal is reiterated and inserted in a plurality of subcarriers.
Abstract translation: 目的：提供一种用于数字多媒体广播的发送/接收方法和装置，通过将OFDM-CDMA传输技术应用于数字多媒体广播系统来提供高速移动中的高质量服务。 构成：通过用正交码映射传送的信息来生成导频信号（S610）。 导频信号扩散到频域（S630）。 扩展的导频信号被调制和传输。 所传输的信息包括用于由接收装置解调接收到的信号的传输参数。 导频信号被重复并插入到多个子载波中。
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公开(公告)号：KR1020090060530A
公开(公告)日：2009-06-15
申请号：KR1020070127383
申请日：2007-12-10
Applicant: 한국전자통신연구원
IPC: H04N21/236
CPC classification number: H04H20/18 , H04H2201/40 , H04N21/234318 , H04N21/2383 , H04N21/4307 , H04N21/6437 , H04N21/64792 , H04N21/8547
Abstract: A high quality media data processing method in a DMB broadcasting system and an apparatus thereof for limiting the transmission band of the round wave digital multimedia broadcasting transport network are provided to simplify a system step and synchronize a video ES and a basic layer ES. A high quality media data processing unit comprises a base layer processing unit(201), an enhancement layer processing unit(203), and a synchronizer(205). The base layer processing unit encodes the channel by multiplexing the basic layer stream. The enhancement layer processing unit synchronizes the basic stream of the enhancement layer to the basic stream of the basic layer. The enhancement layer processing unit processes one or more transmission channel among a plurality of transmission channels in order to be transmitted. Synchronizer provides the synchronization information to the enhancement layer processing unit. The synchronization information synchronizes the elementary stream of the enhancement layer in the elementary stream of the base layer.
Abstract translation: 提供DMB广播系统中的高质量媒体数据处理方法及其用于限制圆形数字多媒体广播传输网络的传输频带的装置，以简化系统步骤并同步视频ES和基本层ES。 高质量媒体数据处理单元包括基本层处理单元（201），增强层处理单元（203）和同步器（205）。 基层处理单元通过多路复用基本层流对信道进行编码。 增强层处理单元将增强层的基本流与基本层的基本流同步。 增强层处理单元处理多个传输信道之中的一个或多个传输信道以便发送。 同步器向增强层处理单元提供同步信息。 同步信息使基础层的基本流中的增强层的基本流同步。
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公开(公告)号：KR100884381B1
公开(公告)日：2009-02-17
申请号：KR1020070042568
申请日：2007-05-02
Applicant: 한국전자통신연구원
Abstract: 본 발명은 이동통신 시스템에서 주파수 옵셋 추정 방법 및 장치에 관한 것이다. 본 발명은 수신 신호에 포함된 기준 심볼의 보호 구간 중 일부에 해당하는 제1 블록의 신호와 상기 수신 신호를 상관하여 제1 상관값을 계산하고, 상기 보호 구간 중 일부에 해당하는 제2 블록의 신호와 상기 수신 신호를 상관하여 제2 상관값을 계산한 후, 상기 제1 상관값을 시간 지연시키고, 상기 지연시킨 제1 상관값의 켤레 복소수와 상기 제2 상관값을 곱하고, 상기 곱한 값의 위상값을 상기 제1 블록과 상기 제2 블록의 시간 간격으로 나누어 주파수 옵셋을 추정한다.
OFDM, 지상파 DMB, 주파수 옵셋 추정, 동기-
公开(公告)号：KR1020090014767A
公开(公告)日：2009-02-11
申请号：KR1020070078965
申请日：2007-08-07
Applicant: 한국전자통신연구원
CPC classification number: H04N21/234318 , H04N21/2362 , H04N21/242 , H04N21/4307 , H04N21/6112 , H04N21/64315 , H04N21/8547
Abstract: A DMB(Digital Multimedia Broadcasting) broadcasting system and method are provided to synchronize the ETI stream of different networks of the DMB broadcasting system, thereby providing stable broadcasting reception to DMB receivers. A first ETI(Ensemble Transport Interface) signal is received from a first network. A second ETI signal is received from a second network. The same frame is searched by comparing the first ETI signal with the second ETI signal. The difference of delay time between the same frames is determined. According to the difference of the delay time, the first ETI signal and the second ETI signal are synchronized. A process of checking an error for the first ETI signal is performed. A process of checking an error for the second ETI signal is performed.
Abstract translation: 提供了DMB（数字多媒体广播）广播系统和方法来同步DMB广播系统的不同网络的ETI流，从而向DMB接收机提供稳定的广播接收。 从第一网络接收第一ETI（集合传输接口）信号。 从第二网络接收第二ETI信号。 通过将第一ETI信号与第二ETI信号进行比较来搜索相同的帧。 确定相同帧之间的延迟时间差。 根据延迟时间的差异，第一ETI信号和第二ETI信号同步。 执行检查第一ETI信号的错误的处理。 执行检查第二ETI信号的错误的处理。
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