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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：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-
公开(公告)号：KR101176285B1
公开(公告)日：2012-08-22
申请号：KR1020080131434
申请日：2008-12-22
Applicant: 한국전자통신연구원
IPC: H04N5/50 , H04N21/434
Abstract: 본발명은아이피티비(Internet Protocol TV)의서비스에관한것으로, 보다상세하게는수신하고있는채널의변경요청에따라컨텐츠서버로부터변경할채널의방송스트림을수신하고, 해당방송스트림에서최대해상도의컨텐츠를우선적으로시청이가능하도록하는아이피티비서비스에관한것이다.
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公开(公告)号：KR1020120069179A
公开(公告)日：2012-06-28
申请号：KR1020100130609
申请日：2010-12-20
Applicant: 한국전자통신연구원
IPC: H04N21/236 , H04N21/2365 , H04H60/73 , H04H60/06
CPC classification number: H04H60/06 , H04H60/73 , H04N21/236 , H04N21/23602 , H04N21/23605 , H04N21/23608 , H04N21/23611 , H04N21/23614 , H04N21/2365
Abstract: PURPOSE: An apparatus for single transmission broadcasting service without needing an ETI input signal process is provided to efficiently construct a transmission system through a multiplexer and a transmitter. CONSTITUTION: An MSC(Main Service Channel) generating unit(207) generates an MSC which is necessary for each transmission frame. An FIC(Fast Information Channel) generating unit(209) generates an FIC based on MCI and SI information which is received from an multiplex managing unit. A transmission frame configuring unit(211) configures a transmission frame to the MSC which is generated from the MSC generating unit. A DMB(Digital Multimedia Broadcasting) modulating unit(213) receives the transmission frame from the transmission frame configuring unit.
Abstract translation: 目的：提供一种不需要ETI输入信号处理的单传输广播业务的装置，通过多路复用器和发射机有效构建传输系统。 构成：MSC（主业务信道）生成部（207）生成对于每个发送帧所必需的MSC。 FIC（快速信息信道）生成单元根据从多路复用管理单元接收的MCI和SI信息生成FIC。 传输帧配置单元（211）将发送帧配置到从MSC生成单元生成的MSC。 DMB（数字多媒体广播）调制单元从传输帧配置单元接收传输帧。
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Patent Agency Ranking96.发明公开계층 변조 서비스를 제공하는 디엠비 시스템, 디엠비 시스템에서 앙상블 전송 인터페이스를 이용한 계층 변조 설정 방법 및 장치 无效使用数字多媒体广播网络中的可靠传输接口和AT-DMB系统配置分层调制的方法和装置
公开(公告)号：KR1020120013189A
公开(公告)日：2012-02-14
申请号：KR1020110064244
申请日：2011-06-30
Applicant: 한국전자통신연구원
IPC: H04N7/015
CPC classification number: H04H60/07
Abstract: PURPOSE: A hierarchical modulation setting apparatus and a method thereof are provided to set up the hierarchical modulation of a DMB transmitter through the output ETI of a multiplexer in a configuration of a transmission network for AT-DMB. CONSTITUTION: A signaling message generating unit(311) generates a signaling message including layer modulation setup information. A frame configuration unit(313) configures an ETI frame including the signaling message based on ETI(Ensemble Transport Interface) standards. A transmitting unit(315) transmits the ETI frame to a DMB transmitter through ETI network according to the ETI standard.
Abstract translation: 目的：提供一种分层调制设置装置及其方法，用于通过AT-DMB传输网络的配置中的多路复用器的输出ETI来建立DMB发射机的分层调制。 构成：信令消息生成单元（311）生成包括层调制设置信息的信令消息。 帧配置单元（313）根据ETI（集合传输接口）标准配置包括信令消息的ETI帧。 发送单元（315）根据ETI标准通过ETI网络将ETI帧发送到DMB发射机。
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公开(公告)号：KR1020110060532A
公开(公告)日：2011-06-08
申请号：KR1020090117141
申请日：2009-11-30
Applicant: 한국전자통신연구원
IPC: H04H20/59 , H04N21/234 , H04N21/235
CPC classification number: H04H20/59 , H04N21/234 , H04N21/235
Abstract: PURPOSE: A disaster broadcasting providing method for providing a disaster service signal and a broadcasting relay apparatus implementing the same are provided to offer the disaster related broadcasting of a specific area to the broadcast channels of users in a corresponding area. CONSTITUTION: A disaster message generating unit receives a disaster service signal(S1320). An audio null stream unit selectively inserts null stream into an encoded disaster service signal(S1340). First and second disaster message stream units multiplex audio/video/data signals(S1350). Ensemble multiplexing units multiplex the multiplexed disaster message signals to ETI(Ensemble Transport Interface) signals(S1360).
Abstract translation: 目的：提供用于提供灾难信息的灾害广播提供方法和实施灾害信息的广播中继装置，以向相应区域中的用户的广播信道提供特定区域的灾害相关广播。 构成：灾害信息生成部接收灾难信号（S1320）。 音频零流单元选择性地将空流插入编码灾难服务信号（S1340）。 第一和第二灾难消息流单元复用音频/视频/数据信号（S1350）。 集成复用单元将多路复用的灾难信号信号复用到ETI（集成传输接口）信号（S1360）。
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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：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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公开(公告)号：KR100963038B1
公开(公告)日：2010-06-10
申请号：KR1020070123893
申请日：2007-11-30
Applicant: 한국전자통신연구원
Abstract: 주파수 옵셋, 위상 옵셋을 보상하는 케이블 모뎀의 동작 방법이 개시된다. 케이블 모뎀의 동작 방법은 케이블 네트워크를 통하여 동일한 패턴의 시퀀스를 갖는 복수의 중복 구간들을 포함하는 프리앰블을 포함하는 입력 신호를 수신하는 단계, 상기 중복 구간들 각각에 포함되는 상기 시퀀스의 동일성을 이용하여 주파수 옵셋을 추정하는 단계, 상기 중폭 신호들에 포함된 상기 시퀀스와 오리지날(original) 시퀀스를 비교하여 위상 옵셋을 추정하는 단계 및 추정된 상기 주파수 옵셋 및 상기 위상 옵셋에 따라 상기 입력 신호를 보상하는 단계를 포함한다.
주파수 옵셋, 위상 옵셋, 프리앰블, 페이로드, CAZAC 시퀀스, 케이블 모뎀
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