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公开(公告)号：KR100874266B1
公开(公告)日：2008-12-16
申请号：KR1020070039226
申请日：2007-04-23
Applicant: 한국전자통신연구원
Abstract: A method and an apparatus for receiving a broadcasting signal through a digital multimedia broadcasting network are provided to improve sensitivity of an OFDM receiver by removing an IFFT(Inverse Fast Fourier Transform) unit in the OFDM(Orthogonal Frequency Division Multiplexing) receiver. An apparatus for receiving a broadcasting signal through a digital multimedia broadcasting network includes a correlation value generator(44), a frame synchronization estimator(45), a gain estimator(46), and a symbol timing offset unit(47). The correlation value generator correlates a synchronization signal, which is included in a time domain reception signal, with a reference signal, and generates a correlation value in the time domain. The frame synchronization estimator compares the time domain correlation value with a reference value. The gain estimator determines a gain based on the time domain correlation value. The symbol timing offset unit detects a sample index of the correlation value with the determined gain.
Abstract translation: 提供了一种通过数字多媒体广播网络接收广播信号的方法和设备，通过去除OFDM（正交频分复用）接收机中的IFFT（快速傅里叶逆变换）单元来提高OFDM接收机的灵敏度。 一种用于通过数字多媒体广播网络接收广播信号的设备包括相关值发生器（44），帧同步估计器（45），增益估计器（46）和码元定时偏移单元（47）。 相关值生成器将包括在时域接收信号中的同步信号与参考信号相关，并且在时域中生成相关值。 帧同步估计器将时域相关值与参考值进行比较。 增益估计器基于时域相关值确定增益。 符号定时偏移单元利用确定的增益来检测相关值的样本索引。
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公开(公告)号：KR1020080097556A
公开(公告)日：2008-11-06
申请号：KR1020070042568
申请日：2007-05-02
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2657 , H04L27/16 , H04L27/2666
Abstract: An apparatus and a method for estimating a frequency offset improve reception performance of a mobile communication system and reduce complexity of the system by estimating interval of a subcarrier up to integral number or prime number times. A first correlative value is calculated by correlating the received signal with a signal of a first block corresponding to a part of a protective section of a reference symbol included in the received signal. A second correlative value is calculated by correlating the received signal with a signal of a second block corresponding to a part of a protective section. The first correlative value is time-delayed(S540). The frequency offset is estimated by using the delayed first and second correlative values.
Abstract translation: 用于估计频率偏移的装置和方法提高了移动通信系统的接收性能，并通过估计子载波的间隔达到整数或素数次来降低系统的复杂度。 通过将接收到的信号与对应于包括在接收信号中的参考符号的保护部分的一部分的第一块的信号进行相关来计算第一相关值。 通过将接收的信号与对应于保护部分的一部分的第二块的信号相关联来计算第二相关值。 第一个相关值是时间延迟的（S540）。 通过使用延迟的第一和第二相关值来估计频率偏移。
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公开(公告)号：KR1020080087923A
公开(公告)日：2008-10-02
申请号：KR1020070017953
申请日：2007-02-22
Applicant: 한국산업기술대학교산학협력단 , 한국전자통신연구원
CPC classification number: G06Q50/10 , G06F17/2235 , H04M3/493 , H04W4/12
Abstract: A two-way service method using a target-specified command integrated with broadcasting is provided to receive participation of viewers in an environment having no two-way communication channel without obstructing the viewer viewing the broadcasting by making the viewer input an opinion conveniently without connecting to a homepage and using a usual viewer participation system without any modification. A target-specified command link is inserted in a broadcasting editing process and broadcasting including the link is broadcasted(S10), and a broadcasting reception terminal receives the broadcasting, and the link is displayed in a screen by using an object such as a button or a character(S20). Activated information among the links displayed in the screen is transferred to a server or a command pointed by the broadcasting reception terminal is executed in the server(S30). The information transferred to the server or an execution result of the server is reflected on a broadcasting production process(S40). The target-specified command uses an ARS(Automatic Response Service), SMS(Short Message Service), server, or client command type depending on the used server or service type.
Abstract translation: 提供了使用与广播相结合的目标指定命令的双向服务方法，以便在没有双向通信信道的环境中接收观众的参与，而不会阻碍观看者观看广播，方便观众输入意见而不连接到 一个主页和使用普通的观众参与系统，没有任何修改。 在广播编辑处理中插入目标指定的命令链接，广播包括链接的广播（S10），广播接收终端接收广播，并且通过使用诸如按钮等的对象将画面显示在画面中 一个字符（S20）。 显示在屏幕中的链接中的激活信息被传送到服务器，或者在服务器中执行广播接收终端指示的命令（S30）。 传送到服务器的信息或服务器的执行结果被反映在广播制作过程中（S40）。 目标指定的命令根据所使用的服务器或服务类型使用ARS（自动响应服务），SMS（短消息服务），服务器或客户端命令类型。
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公开(公告)号：KR1020080052210A
公开(公告)日：2008-06-11
申请号：KR1020070051457
申请日：2007-05-28
Applicant: 한국전자통신연구원
CPC classification number: H04N7/08 , H04H20/65 , H04H20/93 , H04H2201/11
Abstract: A method for providing and extracting link information by using an FIC(Fast Information Channel) is provided to offer and extract the link information such as a URL(Uniform Resource Locator) and a phone number without an additional device in a terrestrial DMB(Digital Multimedia Broadcasting) system. An ensemble multiplexer assigns a link flag to a link flag region(600). The ensemble multiplexer sets a link type in a link type region(602). The ensemble multiplexer inserts link information into a character region(604). The ensemble multiplexer compares the currently inserted link information with previously inserted link information and judges whether the link information is changed(606). If the link information is changed, the ensemble multiplexer changes a link version number of a version number region(608). If the link information is not changed, the ensemble multiplexer inserts a current part number of the currently inserted link information into a current part number region, and inserts the last part number of the currently inserted link information into the last part number region(610).
Abstract translation: 提供一种通过使用FIC（快速信息频道）提供和提取链接信息的方法，以提供和提取诸如URL（统一资源定位符）和电话号码之类的链接信息，而无需附加设备在地面DMB（数字多媒体 广播）系统。 综合多路复用器将链路标志分配给链路标志区域（600）。 综合多路复用器在链路类型区域中设置链路类型（602）。 综合多路复用器将链接信息插入字符区域（604）。 综合多路复用器将当前插入的链接信息与先前插入的链接信息进行比较，并判断链接信息是否改变（606）。 如果链接信息被改变，则集成多路复用器改变版本号区域的链接版本号（608）。 如果链接信息没有改变，则集成多路复用器将当前插入的链接信息的当前部分号插入到当前部件号区域中，并将当前插入的链接信息的最后部分号插入到最后的部件号区域（610） 。
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公开(公告)号：KR100826669B1
公开(公告)日：2008-05-02
申请号：KR1020060094380
申请日：2006-09-27
Applicant: 한국전자통신연구원
IPC: H04N7/12
CPC classification number: H04H60/82 , H04H20/24 , H04H60/07 , H04L65/103 , H04L65/605 , H04L65/608 , H04N21/23608 , H04N21/2381 , H04N21/2389 , H04N21/6131 , H04N21/64322 , H04N21/6437 , H04N21/64707
Abstract: 1. 청구범위에 기재된 발명이 속하는 기술분야
본 발명은 지상파 DMB 콘텐츠 변환 방법 및 게이트웨이와 지상파 DMB 송신 시스템 및 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은 다양한 통신망의 특성 및 지상파 DMB 콘텐츠의 구성을 고려하여 지상파 DMB 콘텐츠를 변환함으로써 지상파 DMB 전용망 뿐 아니라 다양한 통신망을 통하여 효율적으로 지상파 DMB 서비스를 제공할 수 있는 지상파 DMB 콘텐츠 변환 방법 및 게이트웨이를 제공하는데 목적이 있음.
3. 발명의 해결방법의 요지
본 발명은, 지상파 DMB 콘텐츠 변환 게이트웨이에 있어서, ETI(Ensemble Transport Interface) 프레임 포맷의 지상파 DMB 콘텐츠를 FIC(Fast Information Channel) 및 MSC(Main Service Channel)로 분리하는 ETI 역다중화수단; 상기 FIC를 SDP(Session Discription Protocol) 패킷으로 구성하는 SDP 패킷 처리수단; 상기 SDP 패킷을 TCP/IP(Transmission Control Protocol/Internet Protocol) 패킷으로 구성하는 TCP/IP 구성수단; 상기 MSC를 RTP(Real-time Transport Protocol) 패킷으로 구성하는 RTP 패킷 처리수단; 상기 RTP 패킷을 UDP/IP(User Datagram Protocol/Internet Protocol) 패킷으로 구성하는 UDP/IP 구성수단; 및 상기 TCP/IP 패킷 및 상기 UDP/IP 패킷을 IP망으로 전송하는 IP 출력수단을 포함하되, 상기 RTP 패킷처리수단은, 상기 MSC를 역다중화하여 DAB 오디오, DAB 데이터 및 멀티미디어 스트림을 출력하는 MSC 역다중화부; 상기 멀티미디어 스트림을 외복호화하는 외복호화부; 및 상기 MSC 역다중화부로부터 출력된 DAB 오디오 및 DAB 데이터 스트림과 상기 외복호화부로부터 출력된 멀티미디어 스트림을 RTP 패킷으로 구성하는 RTP 패킷처리부를 포함한다.
4. 발명의 중요한 용도
본 발명은 지상파 DMB 서비스 등에 이용됨.
지상파 DMB, FIC(Fast Information Channel), MSC(Main Service Channel)-
Patent Agency Ranking
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公开(公告)号：KR102216973B1
公开(公告)日：2021-02-18
申请号：KR1020140116988
申请日：2014-09-03
Applicant: 한국전자통신연구원
IPC: H04L25/03
Abstract: 본명세서는무선통신시스템에서 FTN(Faster Than Nyquist) 펄스(pulse) 성형을이용한신호전송장치의신호송신방법및 장치에관한것이다. 이러한본 명세서는전송하고자하는비트스트림(bit stream)을변조하는단계, 상기 FTN 펄스성형을위한파라미터를결정하는단계, 상기파라미터를기반으로상기 FTN 펄스를생성하는단계및 상기생성된 FTN 펄스를신호수신장치로전송하는단계를포함하되, 상기파라미터는상기신호수신장치의채널수신상태를기반으로결정되는것을특징으로하는신호송신방법을제공한다.
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公开(公告)号：KR101710703B1
公开(公告)日：2017-02-27
申请号：KR1020110032674
申请日：2011-04-08
Applicant: 한국전자통신연구원
IPC: H04N7/015
Abstract: 방송신호송신장치는소출력및 지역한정방송등과같은소규모방송서비스의수신을위해필요한서비스수신정보를전송프레임의고속정보채널(Fast Information Channel)을통하지않고바코드나통신망을통해서제공한다.
Abstract translation: 目的：提供广播信号发送装置及其方法，通过扫描条形码或通过通信网络连接到特定服务器来提供服务接收信息。 构成：广播信号发送装置通过传输帧的MSC（主业务信道）发送小规模广播业务业务流和基本广播业务业务流。 设备通过传输帧的FIC（快速信息信道）发送接收基本广播业务所需的业务接收信息。 设备通过条形码产生至少一些小规模广播服务的服务接收信息（S818）。 （附图标记）（S802）FIB中的抓取图; （S804）选择FIG对应于小规模广播业务的业务配置信息; （S806）重组图 （S808）生成FIB; （S810）生成FIC; （S812）生成小规模广播业务的业务接收信息; （S814）具有服务接收信息的小规模广播服务的合成图; （S816）生成小规模广播服务的FIB; （S818）生成条形码
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公开(公告)号：KR1020160092714A
公开(公告)日：2016-08-05
申请号：KR1020150013437
申请日：2015-01-28
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04B1/713 , H04J11/0023 , H04L5/0012 , H04L27/2601 , H04B1/7143
Abstract: 비균일한심벌간간섭패턴을이용하여신호를송신하는장치가제공된다. 일실시예에따르면 FTN(Faster Than Nyquist) 방식에따라심벌별 전송신호의위치및 간섭패턴을제어할수 있는파라미터시퀀스를이용하여입력신호를변조한출력신호를송신함으로써중첩된시간대역또는주파수대역만큼자원을절약하고, 효율적으로신호를송수신할수 있다.
Abstract translation: 提供了通过使用不均匀符号之间的干涉图案来发送信号的装置。 根据实施例，通过使用控制干扰图案的参数序列和根据比奈奎斯特（FTN）模式更快的每个符号的发送信号的位置来发送作为调制输入信号的输出信号。 资源被保存的重叠时间范围和频带。 可以有效地发送和接收信号。
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公开(公告)号：KR1020160091266A
公开(公告)日：2016-08-02
申请号：KR1020160007240
申请日：2016-01-20
Applicant: 한국전자통신연구원
Abstract: 임의의꼬리길이를갖는펄스를바탕으로신호를펄스성형하는매퍼, 그리고 FTN 파라미터를바탕으로결정된폭을갖는구형파를이용하여푸리에변환크기를조절할수 있도록신호를절단하는절단부를포함하는다중반송파전송시스템의신호송신장치가제공된다.
Abstract translation: 提供了一种多载波传输系统的信号发送装置，其能够在发送速度超过奇数（FTN）方法的信号时人为地引起副载波之间的干扰而提高频率使用效率。 多载波传输系统的信号发送装置包括：映射器，基于具有随机尾部长度的脉冲将信号形成为脉冲; 以及切割单元，用于通过使用具有基于FTN参数确定的宽度的方波来切割信号以调整傅里叶变换大小。
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