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公开(公告)号：KR1020140113833A
公开(公告)日：2014-09-25
申请号：KR1020130027969
申请日：2013-03-15
Applicant: 한국전자통신연구원
IPC: H04N7/00
CPC classification number: H04N5/44 , H04H2201/11 , H04L25/022
Abstract: The present invention relates to a reception method and a reception apparatus of an AT-DMB system which performs filtering of a channel estimation signal by setting a filtering bandwidth according to the channel delay. The present invention provides the reception method and reception apparatus of an AT-DMB system which improves reception performance of an enhancement layer by more accurately compensating the channel distortion by using LPF having a variable bandwidth in the process of estimating the channel distortion.
Abstract translation: 本发明涉及一种通过根据信道延迟设置滤波带宽来对信道估计信号进行滤波的AT-DMB系统的接收方法和接收装置。 本发明提供一种AT-DMB系统的接收方法和接收装置，其通过在估计信道失真的过程中通过使用具有可变带宽的LPF更精确地补偿信道失真来提高增强层的接收性能。
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公开(公告)号：KR1020140039999A
公开(公告)日：2014-04-02
申请号：KR1020130110055
申请日：2013-09-13
Applicant: 한국전자통신연구원
Abstract: The present invention relates to a method, for receiving an additional network service which is provided through a temporary base station which is temporarily or locally arranged for transmitting disaster information, which includes: a step of receiving information for the additional network through an existing network service provided by a base station; a step of confirming if a service is to be converted to the additional network or not based on information for the additional network; and a step of receiving an additional network service through the additional network. According to the present invention, a temporary or local additional network service can be efficiently provided in a wireless broadcasting network/communication network. According to the present invention, a communication service can be provided through an additional network although a communication service failure is occurred due to traffic explosion in a region which a disaster or an event and et cetera is generated in a communication service point of view and a broadcasting channel which provides information specialized to the disaster or the event is temporarily or locally additionally provided in a broadcasting point of view. [Reference numerals] (AA) Start; (BB) End; (S300) Receiving an existing network service; (S310) Receiving additional network information; (S320) Corresponds to a conversion target into the additional network?; (S330) Converting into the additional network
Abstract translation: 本发明涉及一种接收附加网络服务的方法，该附加网络服务通过暂时或本地布置用于传送灾难信息的临时基站提供，其包括：通过现有网络服务接收附加网络的信息的步骤 由基站提供; 基于附加网络的信息确认服务是否要转换到附加网络的步骤; 以及通过附加网络接收附加网络服务的步骤。 根据本发明，可以在无线广播网络/通信网络中有效地提供临时或本地附加网络服务。 根据本发明，通信服务可以通过附加网络提供，尽管由于在通信服务观点中产生灾难或事件等等的区域中的交通爆炸而发生通信服务故障， 在广播观点上临时地或者局部地附加提供专门针对灾害或事件提供信息的广播信道。 （附图标记）（AA）开始; （BB）结束; （S300）接收现有网络业务; （S310）接收附加网络信息; （S320）对应于转换目标到附加网络？ （S330）转换为附加网络
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公开(公告)号：KR1020140029682A
公开(公告)日：2014-03-11
申请号：KR1020120094925
申请日：2012-08-29
Applicant: 한국전자통신연구원
IPC: H04N7/24
CPC classification number: H04N7/0125
Abstract: The present specification provides a method and an apparatus for scalable broadcast. The scalable broadcasting method comprises dividing broadcasting frequency bands into segments to be scalable; dividing a video image into segments to be scalable; and broadcasting the segments of the broadcasting frequency bands connected with the divided video image to at least one receiver. [Reference numerals] (100) Broadcasting frequency band; (111) QVGA mobile receiver; (112) SD mobile receiver; (113) HD mobile receiver; (115) QVGA image quality; (117) SD image quality; (119) HD image quality; (121) Base layer; (123) Middle layer; (125) Upper layer
Abstract translation: 本说明书提供了一种用于可扩展广播的方法和装置。 可扩展广播方法包括将广播频带划分为可扩展的段; 将视频图像分割成可扩展的片段; 并将与划分的视频图像相连接的广播频带的片段广播到至少一个接收机。 （附图标记）（100）广播频带; （111）QVGA移动接收机; （112）SD移动接收机; （113）高清移动接收机; （115）QVGA图像质量; （117）SD图像质量; （119）高清图像质量; （121）基层; （123）中层; （125）上层
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公开(公告)号：KR1020140025134A
公开(公告)日：2014-03-04
申请号：KR1020120091405
申请日：2012-08-21
Applicant: 한국전자통신연구원
IPC: H04N21/266 , H04N7/167 , H04N21/236 , H04N21/435 , H04N21/4623
CPC classification number: H04N21/23611 , H04N21/26606 , H04N7/1675 , H04N7/24 , H04N21/254 , H04N21/258 , H04N21/266 , H04N21/40 , H04N21/435 , H04N21/4623
Abstract: The present invention relates to a method and an apparatus for efficiently transmitting a conditional access message, which enable a conditional access to a broadcasting service in a DMB system. A terrestrial DMB transmitting system which supports a conditional access includes: a conditional access system (CAS) server which generates information about the transmission cycle and traffic of an entitlement control message (ECM) related to the reception authority of a DMB service; a DMB video scrambler which calculates the number of streams necessary for transmitting the ECM based on the information about the transmission cycle and traffic of the ECM; and a DMB video encoder which generates null packets as many as the calculated number of the streams. The DMB video scrambler generates an ECM packet by inserting the ECM into a payload which is arranged in transport streams for the null packets. [Reference numerals] (110) DMB video encoder; (120) CAS server; (130) DMB video scrambler; (140) DMB multiplexer; (AA) Video source; (BB) Control signal; (CC) Multiplexed frame
Abstract translation: 本发明涉及一种有效地发送条件访问消息的方法和装置，其使得能够对DMB系统中的广播服务进行条件访问。 支持条件访问的地面DMB传输系统包括：条件访问系统（CAS）服务器，其生成与DMB服务的接收权限相关的授权控制消息（ECM）的传输周期和流量的信息; DMB视频加扰器，其基于关于所述ECM的传输周期和业务的信息来计算发送所述ECM所需的流的数量; 以及DMB视频编码器，其产生与计算出的数量一样多的空分组。 DMB视频加扰器通过将ECM插入到排列在空分组的传输流中的有效载荷中来生成ECM分组。 （附图标记）（110）DMB视频编码器; （120）CAS服务器; （130）DMB视频加扰器; （140）DMB多路复用器; （AA）视频来源; （BB）控制信号; （CC）多路复用帧
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公开(公告)号：KR101343761B1
公开(公告)日：2013-12-19
申请号：KR1020090122209
申请日：2009-12-10
Applicant: 한국전자통신연구원 , 서울과학기술대학교 산학협력단
Abstract: 워터마킹한 OFDM 신호를이용한위치인식장치및 방법을제안한다. 본발명의실시예에따른워터마킹한 OFDM 신호를이용한위치인식방법은, 워터마킹한 OFDM 신호수신하고, 워터마킹한 OFDM 신호에서상관특성을도출하여 OFDM 송신기들을식별하고, 각 OFDM 송신기들을상관특성피크치를구하고, 3개이상의 OFDM 송신기들의상관특성피크치의크기를이용해서계산하는 3개이상의 OFDM 송신기들과의거리들을이용해서휴대용단말기의위치를계산한다.
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Patent Agency Ranking
公开(公告)号：KR1020130080277A
公开(公告)日：2013-07-12
申请号：KR1020120001104
申请日：2012-01-04
Applicant: 한국전자통신연구원
CPC classification number: H04N21/41407 , H04H20/24 , H04H20/26 , H04H60/11 , H04H2201/11 , H04N21/44209 , H04N21/6112 , H04N21/6131
Abstract: PURPOSE: A handover device of a T-DMB and a handover method thereof are provided to enable a user to seamlessly view content through a communication network. CONSTITUTION: A transmitter (420) transmits streaming content decoding time information received through a broadcast network to a communication network. A receiver (410) receives the streaming content after the decoding point of time from the communication network. A handover control unit (430) performs handover from the broadcast network to the communication network. The broadcast network is a T-DMB network. The point of time is a system time clock of the streaming content, a packet counter of the streaming content, or a UTC reference value. [Reference numerals] (410) Receiver; (420) Transmitter; (430) Handover control unit
Abstract translation: 目的：提供T-DMB的切换装置及其切换方法，以使用户能够通过通信网络无缝地查看内容。 构成：发射机（420）将通过广播网络接收的流内容解码时间信息发送到通信网络。 接收器（410）在从通信网络的解码时间点之后接收流式传输内容。 切换控制单元（430）执行从广播网络到通信网络的切换。 广播网络是一个T-DMB网络。 时间点是流内容的系统时钟，流内容的分组计数器，或UTC参考值。 （附图标记）（410）接收器; （420）变送器; （430）切换控制单元
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公开(公告)号：KR1020130066487A
公开(公告)日：2013-06-20
申请号：KR1020120078261
申请日：2012-07-18
IPC: H04N7/167
CPC classification number: H04N21/2389 , H04H2201/11 , H04H2201/20 , H04N21/26606
Abstract: PURPOSE: A device for scrambling a multimedia stream is provided to selectively scramble a video stream or an audio stream among contents included a multimedia strea. CONSTITUTION: A demultiplexing unit(430) demultiplexes a first multimedia stream to a first and second streams. A scrambler(440) scrambles the first stream. An ECM packet generator(460) generates an ECM packet using ECM data of the first multimedia stream. A null packet generator(490) generates a second null packet. A multiplexing unit(470) generates a second multimedia stream by multiplexing the scrambled first stream, the second stream, the ECM packet, and the second null packet. [Reference numerals] (410) Receiving unit; (420) Analyzing unit; (430) Demultiplexing unit; (440) Scrambler; (450) PSI correction unit; (460) ECM packet generator; (470) Multiplexing unit; (480) Control unit; (481) CW generating unit; (482) Limited receiving server; (490) Null packet generator; (AA) Second stream; (BB) First stream
Abstract translation: 目的：提供一种用于加扰多媒体流的装置，用于选择性地加扰包含多媒体流的内容中的视频流或音频流。 构成：解复用单元（430）将第一多媒体流解复用到第一和第二流。 加扰器（440）对第一流进行加扰。 ECM分组生成器（460）使用第一多媒体流的ECM数据生成ECM分组。 空分组生成器（490）生成第二空分组。 复用单元（470）通过多路复用加扰的第一流，第二流，ECM分组和第二空分组来生成第二多媒体流。 （附图标记）（410）接收单元; （420）分析单位; （430）解复用单元; （440）扰乱器; （450）PSI校正单元; （460）ECM包发生器; （470）复用单元; （480）控制单元; （481）CW发电机组; （482）有限接收服务器; （490）空包发生器; （AA）第二流; （BB）第一流
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公开(公告)号：KR101260107B1
公开(公告)日：2013-05-02
申请号：KR1020100020711
申请日：2010-03-09
Applicant: 한국전자통신연구원 , 전남대학교산학협력단
Abstract: 입력벡터신호를성상회전시켜회전벡터신호를생성하고, 상기회전벡터신호를허수값 및실수값으로분리한후, 상기허수값을순환지연시킴에따라생성된순횐지연된허수값과상기실수값을기반으로복소신호를생성하여출력하는다이버시티장치및 방법을제공한다.
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公开(公告)号：KR1020130038787A
公开(公告)日：2013-04-18
申请号：KR1020120028048
申请日：2012-03-20
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A system for providing additional information and a method thereof are provided to offer additional information to a local area through a multimedia service. CONSTITUTION: An additional information generation unit(112) generates additional information. A channel searching unit(113) searches frequencies. The channel searching unit selects an additional information broadcasting channel transmitting the additional information from channels which are currently not used. A channel information providing unit(114) provides the information of the additional information broadcasting channel to a normal broadcasting device. An additional information transmission unit(115) broadcasts the additional information through the additional information broadcasting channel. [Reference numerals] (111) Control unit; (112) Additional information generation unit; (113) Channel searching unit; (114) Channel information providing unit; (115) Additional information transmission unit; (121) General broadcasting signal generation unit; (122) Broadcasting signal transmission unit; (231) Additional information channel detection unit; (232) Interface unit; (233) Reception unit; (234) Display unit; (AA) Additional information providing event;
Abstract translation: 目的：提供用于提供附加信息的系统及其方法，以通过多媒体服务向本地区域提供附加信息。 构成：附加信息生成单元（112）产生附加信息。 频道搜索单元（113）搜索频率。 频道搜索单元从当前未使用的频道中选择发送附加信息的附加信息广播频道。 频道信息提供单元（114）向普通广播设备提供附加信息广播频道的信息。 附加信息发送单元（115）通过附加信息广播信道广播附加信息。 （附图标记）（111）控制单元; （112）附加信息生成单元; （113）频道搜索单元; （114）信道信息提供单元; （115）附加信息传输单元; （121）一般广播信号发生单元; （122）广播信号发送单元; （231）附加信息通道检测单元; （232）接口单元; （233）接待单位; （234）显示单元; （AA）提供事件的附加信息;
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公开(公告)号：KR101189009B1
公开(公告)日：2012-10-08
申请号：KR1020080130433
申请日：2008-12-19
Applicant: 한국전자통신연구원
Abstract: 매체 접근 제어(Media Access Control: MAC)에서 복수의 상향채널로 나뉘어 전달된 데이터를 각각 기저대역(baseband) 디지털 신호로 변조(modulation)하고, 상기 각각의 기저대역 디지털 신호를 각각 기저대역 아날로그 신호로 변환하며, 상기 각각의 기저대역 아날로그 신호를 각각 고주파대역 주파수(Radio Frequency: RF) 신호로 상향변환하고, 상기 각각의 RF 신호의 전송 채널을 결합(combining)하여 상기 결합된 전송 채널을 통해 상기 각각의 RF 신호를 광 동축 혼합(Hybrid Fiber Coax: HFC)망으로 전송하는 케이블 모뎀 송신기가 개시된다.
채널, 결합, HFC, 변조, 케이블 모뎀
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