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公开(公告)号：KR101011261B1
公开(公告)日：2011-01-26
申请号：KR1020080103261
申请日：2008-10-21
Applicant: 한국전자통신연구원
Abstract: 본 발명은 디지털 멀티미디어 방송 시스템에서의 수신장치 및 그 방법에 관한 것이다.
본 발명에 따르면, 수신장치는 복수의 안테나를 통해 수신되는 수신신호 별로 파일럿 신호 또는 의사랜덤시퀀스 신호를 검출하고, 검출된 파일럿 신호 또는 의사랜덤시퀀스 신호를 토대로 복수의 안테나를 통해 수신되는 수신신호 각각에 포함된 추가신호에 대한 채널추정을 수행하고 채널프로파일을 생성한다. 그리고, 생성된 채널프로파일을 토대로 획득한 복수의 안테나를 통해 수신되는 수신신호에 포함된 추가신호 각각에 해당하는 주 경로 신호 위치를 일치시킨 뒤 추가신호에 대한 결합 다이버시티를 수행한다. 이후, 결합 다이버시티 처리된 추가신호는 등화기, 주파수 디인터리버, 디맵퍼, 역다중화기 및 채널 디코더를 통해 추가데이터로 출력된다.
T-DMB, 계층변조, 파일럿 신호, PRS, 다이버시티, 채널프로파일-
公开(公告)号：KR1020100124554A
公开(公告)日：2010-11-29
申请号：KR1020090043618
申请日：2009-05-19
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus and a method for providing e-learning using tree dimensional contents are provided to give 3 dimensional effects by synchronizing moving picture with lecturing contents. CONSTITUTION: An AV authoring server(130) authors the AV contents for e-learning. The AV authoring server stores the AV contents for authored e-learning as described above. A contents authoring server(110) authors the AV contents for e-learning and lecture contents for e-learning into various formats. An educational contents DB(120) stores e-learning lecture contents. An electronic education server(140) receives e-learning AV and lecture contents.
Abstract translation: 目的：提供使用树形尺寸内容提供电子学习的装置和方法，以通过将动画与演讲内容同步来给出三维效果。 构成：AV创作服务器（130）将AV内容作为电子学习。 AV创作服务器如上所述存储用于创作的电子学习的AV内容。 内容创作服务器（110）将电子学习的AV内容和电子学习的内容作为各种格式。 教育内容DB（120）存储电子学习讲座内容。 电子教育服务器（140）接收电子学习AV和演讲内容。
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公开(公告)号：KR1020100120610A
公开(公告)日：2010-11-16
申请号：KR1020090074456
申请日：2009-08-12
Applicant: 한국전자통신연구원
IPC: H04N21/2668 , H04N21/433 , H04N21/81 , H04N21/233 , H04N21/234
CPC classification number: H04N21/2668 , H04N21/233 , H04N21/234 , H04N21/4331 , H04N21/812
Abstract: PURPOSE: A method and a device for transmitting an advertisement service, and a method and a device for receiving an advertisement service are provided to supply an advertisement service while a viewer waits for a broadcast service, thereby increasing time efficiency. CONSTITUTION: An advertisement broadcast server transfers advertisement content(S210). An audio encoding unit inserts the advertisement content to an audio service stream(S220). A video encoding unit inserts the advertisement content into a video service stream(S230). A data broadcast server inserts the advertisement content into a data service stream(S240). A multiplexer multiplexes the streams(S250). A modulator generates and transmits a mobile broadcast signal by modulating a transmission frame(S260,S270).
Abstract translation: 目的：提供一种用于发送广告服务的方法和装置，以及用于接收广告服务的方法和装置，以在观众等待广播服务的同时提供广告服务，从而提高时间效率。 规定：广告广播服务器传送广告内容（S210）。 音频编码单元将广告内容插入音频服务流（S220）。 视频编码单元将广告内容插入到视频服务流中（S230）。 数据广播服务器将广告内容插入到数据服务流中（S240）。 多路复用器多路复用数据流（S250）。 调制器通过调制发送帧产生并发送移动广播信号（S260，S270）。
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公开(公告)号：KR100991518B1
公开(公告)日：2010-11-04
申请号：KR1020070131360
申请日：2007-12-14
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04L5/1446 , H04L5/0044 , H04L5/0064 , H04L5/0092
Abstract: 케이블 모뎀 종단 시스템은 대역요청 메시지를 수신하고, 대역요청 메시지를 바탕으로 정보를 수집한다. 이후 대역요청 메시지 및 수집한 정보를 바탕으로 시가대역 크기 정보를 생성하고, 수집한 정보 및 시간대역 크기 정보를 바탕으로 대역할당 메시지를 생성한다. 이를 통해 케이블 모뎀 종단 시스템은 케이블 모뎀이 전송하는 데이터를 효과적으로 수신할 수 있다.
케이블, 모뎀, 대역, 할당, 닥시스-
公开(公告)号：KR1020100105322A
公开(公告)日：2010-09-29
申请号：KR1020090089104
申请日：2009-09-21
Applicant: 한국전자통신연구원
CPC classification number: H04L9/3234 , H04L9/0643 , H04L9/085 , H04L9/0866 , H04L9/0869 , H04L9/0877 , H04L9/3273 , H04L2209/60
Abstract: PURPOSE: A DCAS, SM, TP and a method for certificating security are provided to form a safe security environment by using a security protocol module in which mutual authentication and a security channel between a security module and a transmission process module are formed. CONSTITUTION: A security module fairing part transmit a key request message including security module(44-44n) and a transmission process module(46-46n). The security module fairing part receives a key response message including an encoding seed key from a head end. The secure module key generating unit transmits the contents encryption key based on the encoding seed key to the transmittal module. The secure module key generating unit receives the contents encryption key of the transport module. The security module encryption unit compares the contents encryption key with the contents encryption key.
Abstract translation: 目的：提供DCAS，SM，TP和安全认证方法，通过使用形成安全模块和传输过程模块之间的相互认证和安全通道的安全协议模块形成安全的安全环境。 构成：安全模块整流装置发送包括安全模块（44-44n）和传输处理模块（46-46n）的密钥请求消息。 安全模块整流器部分从头端接收包括编码种子密钥的密钥响应消息。 安全模块密钥生成单元将基于编码种子密钥的内容加密密钥发送到传送模块。 安全模块密钥生成单元接收传输模块的内容加密密钥。 安全模块加密单元将内容加密密钥与内容加密密钥进行比较。
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Patent Agency Ranking
公开(公告)号：KR1020100072595A
公开(公告)日：2010-07-01
申请号：KR1020080131041
申请日：2008-12-22
Applicant: 한국전자통신연구원
CPC classification number: H04N21/6402 , H04N21/23605 , H04N21/2543 , H04N21/6118 , H04N21/64322
Abstract: PURPOSE: An apparatus and a method for providing an IPTV service by using DSID over a cable network are provided to use DOCSIS streamer transmitting IPTV contents through downlink channel by usage of the DSID thereby efficiently using frequency resources. CONSTITUTION: A DOCSIS(Data-Over-Cable Interface Specification) streamer(115) receives IPTV(Internet Protocol Television) contents and allocation information about IPTV contents from the IPTV contents servers(101a,101b,119) and a CMTS(Cable Modem Termination System)(121). The DOCSIS streamer generates DOCSIS packet. If a transmission bandwidth allocation request is received from the CMTS, a resource manager(117) assigns transmission band of downlink channel for transmitting the DOCSIS packet to a cable modem(143).
Abstract translation: 目的：提供一种通过使用DSID通过有线网络提供IPTV服务的装置和方法，以通过DSID的使用通过下行链路信道来发送IPTV内容的DOCSIS流水线从而有效地使用频率资源。 规定：DOCSIS（数据电缆接口规范）流分送器（115）从IPTV内容服务器（101a，101b，119）和CMTS（电缆调制解调器终端）接收IPTV（因特网协议电视）内容和关于IPTV内容的分配信息 系统）（121）。 DOCSIS流分录器生成DOCSIS数据包。 如果从CMTS接收到传输带宽分配请求，则资源管理器（117）将用于发送DOCSIS分组的下行链路信道的传输频带分配给有线调制解调器（143）。
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公开(公告)号：KR1020100072477A
公开(公告)日：2010-07-01
申请号：KR1020080130897
申请日：2008-12-22
Applicant: 한국전자통신연구원
CPC classification number: H04L63/0815 , H04L63/126 , H04N21/26613 , H04N21/63345 , H04N21/63775
Abstract: PURPOSE: An apparatus and a method for authenticating a terminal in a DCAS(Downloadable Conditional Access System) are provided to supply information through a channel which enables a security, integrity and message authentication. CONSTITUTION: A first receiving unit(410) receives terminal authentication information from a user terminal, and a judgment unit(420) judges based on a database whether or not the terminal authentication information is valid. If the terminal authentication information is valid, a first transmission unit(430) transmits pairing information on the terminal authentication and DCAS image information to the user terminal. The database stores the ID information on the terminal authentication of the user terminals from an authorized ID issuing agency.
Abstract translation: 目的：提供一种用于认证DCAS（可下载条件接入系统）中的终端的装置和方法，以通过能够进行安全性，完整性和消息认证的信道来提供信息。 构成：第一接收单元（410）从用户终端接收终端认证信息，判断单元（420）根据数据库判断终端认证信息是否有效。 如果终端认证信息有效，则第一发送部（430）向用户终端发送关于终端认证和DCAS图像信息的配对信息。 数据库从授权ID发行机构存储关于用户终端的终端认证的ID信息。
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公开(公告)号：KR1020100072451A
公开(公告)日：2010-07-01
申请号：KR1020080130864
申请日：2008-12-22
Applicant: 한국전자통신연구원
CPC classification number: H03M13/1515 , H04N19/188 , H04N19/89
Abstract: PURPOSE: A method and an apparatus for having variable error correction capability are provided to use stuff field of an MPEG-2 transport stream for error correction, thereby providing Reed-Solomon encoder of the various error correction capability without expansion of hardware. CONSTITUTION: A transmission error correction device(400) comprises a packet receiving unit(401), a field confirmation unit(402) and error correction processor(403). The packet receiving unit receives a packet of a TS(Transport Stream) from a broadcasting system. The field confirmation unit confirms stuff field from received packet. Based on the confirmed stuff field, the error correction processor corrects an error of broadcasting contents.
Abstract translation: 目的：提供一种具有可变纠错能力的方法和装置，以使用MPEG-2传输流的填充字段进行纠错，从而在不扩展硬件的情况下提供各种纠错能力的Reed-Solomon编码器。 构成：传输纠错装置（400）包括分组接收单元（401），场确认单元（402）和纠错处理器（403）。 分组接收单元从广播系统接收TS（传输流）的分组。 字段确认单元从接收到的分组确认填充字段。 基于确认的填充字段，纠错处理器校正广播内容的错误。
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公开(公告)号：KR1020100071815A
公开(公告)日：2010-06-29
申请号：KR1020080130656
申请日：2008-12-19
Applicant: 한국전자통신연구원
IPC: H04N21/236 , H04N21/434 , H04N13/00
CPC classification number: H04N21/435 , H04H20/30 , H04H20/40 , H04H60/07 , H04N13/10 , H04N13/172 , H04N13/194 , H04N19/37 , H04N19/46 , H04N19/597 , H04N19/61 , H04N21/21 , H04N21/23 , H04N21/234327 , H04N21/235 , H04N21/236 , H04N21/23614 , H04N21/2365 , H04N21/434 , H04N21/4347 , H04N21/816
Abstract: PURPOSE: A system and a method for transmitting/receiving a non real time 3D broadcast are provided to transmit additional 3D data including a 3D sub image and information for the 3D sub image in non real time. CONSTITUTION: A non real time broadcast server(303) generates a non real time service information table including information required for receiving and restoring a 3D sub image and information for the receiving and restoring the 3D image by a transport stream. A media encoder(301) generates a 2D image by a transport stream of a fixed bit rate based on the bit rate of a 3D sub image transport stream. An ensemble multiplexer(305) multiplexes a 2D image transport stream, a 3D sub image transport stream, and a non real time service information table transport stream in a fixed sub channel.
Abstract translation: 目的：提供用于发送/接收非实时3D广播的系统和方法，用于以非实时的方式发送包括3D子图像的附加3D数据和3D子图像的信息。 构成：非实时广播服务器（303）生成包括用于接收和恢复3D子图像所需的信息的非实时服务信息表以及用于通过传输流接收和恢复3D图像的信息。 媒体编码器（301）基于3D子图像传输流的比特率，通过固定比特率的传输流生成2D图像。 整体多路复用器（305）在固定子信道中复用2D图像传输流，3D子图像传输流和非实时服务信息表传输流。
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公开(公告)号：KR1020100071643A
公开(公告)日：2010-06-29
申请号：KR1020080130433
申请日：2008-12-19
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A cable modem upstream transmitter and a method for transmitting signal of the same are provided to support DOCSIS 3.0 standard for the cable modem by transmitting data to a hybrid fiber coax network. CONSTITUTION: A plurality of modulating modules(121 to 124) modulates data, which is transmitted to a plurality of upstream channels from a media access control, into the digital signal of each baseband. A plurality of converting modules(131 to 134) converts the digital signal of each baseband into the analog signal of each baseband. An RF module(140) converts the analog signal into the frequency signal a high frequency band. The RF module transmit each RF signal to a hybrid fiber coax network. Power amplifier modules amplifies the power of the analog signal.
Abstract translation: 目的：提供电缆调制解调器上行发送器及其发送信号的方法，通过向混合光纤同轴电缆网络发送数据来支持电缆调制解调器的DOCSIS 3.0标准。 构成：多个调制模块（121至124）将从媒体访问控制发送到多个上行信道的数据调制成每个基带的数字信号。 多个转换模块（131至134）将每个基带的数字信号转换成每个基带的模拟信号。 RF模块（140）将模拟信号转换成频率信号为高频带。 RF模块将每个RF信号发送到混合光纤同轴电缆网络。 功率放大器模块放大模拟信号的功率。
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