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    • 2. 发明公开
    • WDM PON RF/비디오 브로드캐스트 오버레이
    • WDM PON RF / VIDEO BRAODCAST OVERLAY
    • KR1020110053973A
    • 2011-05-24
    • KR1020117004351
    • 2009-06-26
    • 에릭슨 엘지 주식회사
    • 룩,톰굿챠일드,제임스만토,지오바니하벨,리챠드
    • H04B10/2581H04J14/02
    • H04J14/0282H04J14/0226H04J14/0232H04J14/0246H04J14/025H04J14/0298
    • PURPOSE: An RF/video broadcast overlay is provided to overlay the RF/video broadcast in a WDM PON(Wavelength Division Multiplexed Passive Optical Network). CONSTITUTION: A remote node of the WDM PON comprises a MUX/DEMUX(22) for demultiplexing a WDM(Wavelength Division Multiplexed) signal and supplying respective wavelength channels to each one of a plurality of channel fibers; an optical power splitter(40) for supplying the broadcast channel to each one of a plurality of distribution paths; and a respective optocoupler(44) connected to each distribution path, each optocoupler coupling the broadcast channel into one of the channel fibers. The broadcast channel has a wavelength that is outside at least a wavelength band of downlink signals of the WDM signal. An ONT(Optical Network Terminal) includes a triplexer for separating the broadcast channel from at least a downlink wavelength channel of the WDM-PON.
    • 目的:提供RF /视频广播覆盖以覆盖WDM PON(波分复用无源光网络)中的RF /视频广播。 构成:WDM PON的远程节点包括MUX / DEMUX(22),用于对WDM(波分复用)​​信号进行解复用,并将多个波长信道提供给多个信道光纤中的每一个; 用于将广播信道提供给多个分配路径中的每一个的光功率分配器(40); 以及连接到每个分配路径的相应的光耦合器(44),每个光耦合器将广播信道耦合到信道光纤之一中。 广播信道的波长至少在WDM信号的下行链路信号的波长带之外。 ONT(光网络终端)包括用于将广播信道与WDM-PON的至少下行链路波长信道分离的三工器。
    • 5. 发明公开
    • 양방향 파장분할다중방식 수동형 광가입자망
    • 双向波长多路复用被动光网络
    • KR1020090089563A
    • 2009-08-24
    • KR1020080014799
    • 2008-02-19
    • 한국과학기술연구원
    • 이관일이상배
    • H04B10/2581H04J14/02
    • H04J14/0226H04B10/032H04J14/0232H04J14/0246H04J14/025H04J14/0282H04J14/0291H04J14/0295
    • A two-way WDM-PON(Wavelength Division Multiplexed Passive Optical Network) is provided to perceive the failure of the distribution fibers and trunk line by sensing WDM-PON comprised of the subscriber equipment. A control unit(273) sends and receives the multiplexed optical signal. A local node receives multiplexed optical signal and re-multiplexes the light signal. An optical network unit sends and receives the local node and de-multiplexed optical signal. The trunk line optical cable for the working and protection connects the central base station and local node. The dispersion optical cable for the working and protection connects the local node and optical network unit. When failure is in the working dispersion or the trunk line optical cable, the optical network unit sends and receives the optical signal through the dispersion for the protection and trunk line optical cable.
    • 提供双向WDM-PON(波分复用无源光网络),通过感测由用户设备组成的WDM-PON来感知分配光纤和中继线路的故障。 控制单元(273)发送和接收复用的光信号。 本地节点接收多路复用的光信号并重新复用光信号。 光网络单元发送和接收本地节点和解复用的光信号。 用于工作和保护的中继线光缆连接中央基站和本地节点。 用于工作和保护的分散光缆连接本地节点和光网络单元。 当工作分散或中继线光缆故障时,光网络单元通过用于保护和中继线光缆的色散发送和接收光信号。
    • 9. 发明公开
    • IEEE1394를 이용한 방송 통신 융합 FTTH 시스템
    • 使用IEEE1394进行广播和通信的FTTH系统
    • KR1020050078946A
    • 2005-08-08
    • KR1020040007046
    • 2004-02-03
    • 삼성전자주식회사
    • 송관웅박정록조재헌고준호
    • H04L12/28
    • H04H20/77H04J14/02H04J14/0226H04J14/0232H04J14/0247H04J14/0252H04J14/0282H04Q11/0067H04Q2011/0064
    • A broadcast/communication convergence system, and an FTTH (Fiber To The Home) system that can accommodate broadcast signals of various channels and variable band signals by converging broadcast and communication signals and transmitting the converged broadcast and communication signals using an IEEE 1394 transmission method serving as a standard interface in the FTTH system for broadcast/communication convergence. An OLT (Optical Line Terminal) transfers a plurality of broadcast signals and a communication signal received from external broadcast and communication providers through a single optical signal (A). An ONU (Optical Network Unit) receives the optical signal (A) from the OLT, separates the received optical signal into the plurality of broadcast signals and the communication signal, opto-electrically converts the plurality of broadcast signals and the communication signal, switches the converted broadcast signals subscriber by subscriber, combines the converted communication signal with the switched converted broadcast signals. The result is transferred to a corresponding subscriber through a single optical signal (B). A gateway at each subscriber is implemented by IEEE 1394 protocol to receive the optical signal (B) from the ONU, separate the received optical signal into the broadcast signals and the communication signal, and transfer the broadcast signals and the communication signal to a corresponding subscriber device.