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    • 1. 发明申请
    • FRAME GENERATION METHOD, OPTICAL TRANSMISSION DEVICE, AND OPTICAL TRANSMISSION SYSTEM
    • 框架生成方法,光学传输装置和光传输系统
    • US20140122978A1
    • 2014-05-01
    • US14126581
    • 2011-12-08
    • Kazuo Kubo
    • Kazuo Kubo
    • H03M13/25H04J3/16
    • H03M13/253H04J3/1652H04L1/0009H04L1/0011H04L1/0057H04L1/0083
    • A frame generation method in an optical transmission system that transmits a transmission frame including a payload area for storing therein information data and an FEC redundant area for storing therein an error correcting code with respect to the information data is provided, in which coding gain is calculated based on the quality of a communication path through which the transmission frame is transmitted, and, when it is determined that redundancy is insufficient with an error correcting code stored in the FEC redundant area based on the coding gain, a variable parity area for storing therein the error correcting code is set in the payload area and a transmission frame in which the error correcting code is stored in the FEC redundant area and the variable parity area is generated.
    • 提供一种光传输系统中的帧生成方法,其发送包括用于存储信息数据的有效负载区域的传输帧和用于在其中存储关于信息数据的纠错码的FEC冗余区域,其中计算编码增益 基于发送帧通过的通信路径的质量,并且当基于编码增益确定存储在FEC冗余区域中的纠错码确定冗余不足时,用于存储传输帧的可变奇偶校验区域 在有效负载区域中设置纠错码,并且在FEC冗余区域和可变奇偶校验区域中生成错误校正码的传输帧。
    • 2. 发明授权
    • Optical network system, optical redundant switching apparatus, and WDM apparatus
    • 光网络系统,光冗余交换设备和WDM设备
    • US08693864B2
    • 2014-04-08
    • US13060332
    • 2008-10-15
    • Kazuo KuboTakashi MizuochiYuji Akiyama
    • Kazuo KuboTakashi MizuochiYuji Akiyama
    • H04J14/02
    • H04J3/1652H04B1/74H04J3/14H04J14/0295H04J14/0297
    • An optical network system includes a first node that converts input signals of n systems into optical signals having wavelengths different for each of the systems and wavelength-multiplexes and transmits the optical signals and a second node that selects signals of n systems from the wavelength-multiplexed signals and outputs the signals. The first node includes an optical coupler that divides the input signals into operating system signals and redundant signals, TPNDs that convert the operating systems into optical signals, an optical switch that selects standby system signals from the redundant signals, and a TPND that converts the standby system signals into optical signals in a storage mode corresponding to a type of the standby system signals. The second node includes TPNDs that convert the optical signals converted from the operating system signals into signals of a type corresponding to the input signals, a TPND that converts the optical signals of the standby system signals into signals of the type of the input signals in a storage mode corresponding to the standby system signals, and an optical switch that selects an output destination of the signals output from the TPND.
    • 光网络系统包括将n个系统的输入信号转换成具有对于每个系统和波长复用的波长不同的波长的第一节点,并且发送光信号,以及从波长多路复用器件中选择n个系统的信号的第二节点 信号并输出​​信号。 第一个节点包括将输入信号分为操作系统信号和冗余信号的光耦合器,将操作系统转换为光信号的TPND,从冗余信号中选择待机系统信号的光开关,以及转换待机状态的TPND 系统以对应于备用系统信号的类型的存储模式将信号转换成光信号。 第二节点包括将从操作系统信号转换的光信号转换为与输入信号相对应的类型的信号的TPND,将待机系统信号的光信号转换为输入信号类型的信号的TPND 对应于备用系统信号的存储模式,以及选择从TPND输出的信号的输出目的地的光开关。
    • 3. 发明申请
    • ERROR CORRECTION METHOD AND DEVICE
    • 错误校正方法和设备
    • US20120246537A1
    • 2012-09-27
    • US13513411
    • 2010-11-19
    • Kazuo KuboTakashi Mizuochi
    • Kazuo KuboTakashi Mizuochi
    • H03M13/05G06F11/10
    • H03M13/2909H03M13/1102H03M13/1515H03M13/152H03M13/2945H03M13/6519H04L1/0057H04L1/0083
    • Provided is an error correction method for an optical communication system that transmits a transmission frame formed of information data added with an overhead and an error correction code, the error correction method including adjusting a size of an FEC redundant area of an FEC frame for storing client signals of different signal types in accordance with the client signals so that transmission rates of the FEC frame for the respective client signals have an approximately N-multiple relationship (N is a positive natural number). With this, it is possible to obtain an error correction method and device capable of providing a high-quality and high-speed optical communication system without performance degradation caused by jitter or the like and with the common use of circuits having a reduced circuit scale.
    • 提供了一种用于发送由添加有开销的信息数据和纠错码构成的传输帧的光通信系统的纠错方法,所述纠错方法包括:调整用于存储客户端的FEC帧的FEC冗余区域的大小 根据客户端信号的不同信号类型的信号,使得各个客户端信号的FEC帧的传输速率具有大约N倍的关系(N是正的自然数)。 由此,可以获得能够提供高质量和高速光通信系统的纠错方法和装置,而不会由抖动等引起的性能下降,并且通常使用具有减小的电路规模的电路。
    • 5. 发明申请
    • OPTICAL TRANSMISSION APPARATUS
    • 光传输装置
    • US20110311217A1
    • 2011-12-22
    • US13254189
    • 2009-11-06
    • Eiichi HoriuchiSota YoshidaKazuo Kubo
    • Eiichi HoriuchiSota YoshidaKazuo Kubo
    • H04B10/02
    • H04J14/0297H04L69/40H04Q11/0062H04Q2011/0081
    • An optical transmission apparatus that protects different types of signals with a common backup transponder. The optical transmission apparatus includes working transponder units that relay respective optical signals on corresponding working transmission lines to or from external client devices, a backup transponder unit that can relay optical signals of different interface types, a 3:1 optical switch unit and a 1:3 optical switch unit that connect the external client devices and the working transponder units, and can connect the external client device and the backup transponder unit, and a monitor control unit that monitors occurrence of a failure in the working transponder units and the backup transponder unit, and controls switching of the transmission lines upon detection of a failure.
    • 一种用共同备用转发器保护不同类型信号的光传输装置。 光传输装置包括工作转发器单元,其将来自外部客户端设备的相应工作传输线路上的相应光信号中继;可以中继不同接口类型的光信号的备用转发器单元,3:1光开关单元和1: 3光开关单元,其连接外部客户端设备和工作转发单元,并且可以连接外部客户端设备和备用应答器单元;以及监视器控制单元,其监视工作应答器单元和备用应答器单元中的故障发生 并且在检测到故障时控制传输线路的切换。
    • 9. 发明授权
    • Optical reception device and optical reception method
    • 光接收装置和光接收方法
    • US07392440B2
    • 2008-06-24
    • US10562799
    • 2004-02-27
    • Kazuhide OuchiKazuo Kubo
    • Kazuhide OuchiKazuo Kubo
    • H03M13/00
    • H04L25/067H04L1/0045H04L25/063
    • An optical signal receiving equipment including an optical-electrical converter configured to convert optical signals into electronic signals; first deciders configured to transform the electronic signals into first binary signals; a second decider configured to transform the electronic signals into a second binary signal; a decision encoder configured to compute identification signals based on the plurality of first binary signals, and to compute reliability information of the computed identification signals; a converter configured to combine the identification signals and the second binary signal to combined identification signals; and a controller configured to execute an initial identification of the electronic signals in any one of the plurality of first deciders by using an initial threshold level in the plurality of first deciders, to measure an average amplitude of the electronic signals, and to correct the threshold level of the plurality of first deciders based on a variation of the average amplitude of the electronic signals.
    • 一种光信号接收设备,包括配置成将光信号转换成电子信号的光电转换器; 配置为将电子信号转换成第一二进制信号的第一决定器; 第二判定器,被配置为将所述电子信号转换为第二二进制信号; 判定编码器,被配置为基于所述多个第一二进制信号计算识别信号,并计算所计算的识别信号的可靠性信息; 转换器,被配置为将识别信号和第二二进制信号组合到组合识别信号; 以及控制器,被配置为通过使用所述多个第一判决器中的初始阈值电平来执行所述多个第一判定器中的任何一个中的所述电子信号的初始识别,以测量所述电子信号的平均幅度,并校正所述阈值 基于电子信号的平均幅度的变化,多个第一判定器的电平。