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    • 51. 发明授权
    • Optical network
    • 光网络
    • US06643041B1
    • 2003-11-04
    • US09345747
    • 1999-07-01
    • Hiroki IkedaTatsuo Kanetake
    • Hiroki IkedaTatsuo Kanetake
    • H04B1020
    • H04J14/0295H04J14/0206H04J14/0212H04J14/0283H04J2203/006
    • A first object of the invention of the present application is to provide an optical network capable of flexibly performing a choice of protection optical paths upon the occurrence of a failure without depending on an installation form of an optical transmission line, e.g., an optical fiber. A second object of the invention of the present application is to allow an improvement in the efficiency of use of an optical transmission line, e.g., an optical fiber employed in an optical network. The invention of the present application provides a wavelength division multiplexing transmission optical network having at least a plurality of pieces of transmission equipment and a plurality of optical paths connecting the transmission equipment and wherein wavelengths of predetermined transmission light are assigned to the optical paths and a transmission frame having overhead information is at least used to perform digital transmission.
    • 本发明的第一个目的是提供一种光网络,其能够在发生故障时灵活地执行保护光路的选择,而不依赖于诸如光纤的光传输线的安装形式。 本发明的第二个目的是允许提高光传输线路的使用效率,例如光网络中使用的光纤。 本申请的发明提供了一种具有至少多个传输设备和连接传输设备的多个光路的波分复用传输光网络,其中预定传输光的波长被分配给光路和传输 至少使用具有开销信息的帧来执行数字传输。
    • 55. 发明授权
    • Optical line terminal and optical line transmission and reception system
    • 光线路终端和光线路传输和接收系统
    • US08374501B2
    • 2013-02-12
    • US12620876
    • 2009-11-18
    • Hideya YoshiuchiHiroki IkedaYing Shi
    • Hideya YoshiuchiHiroki IkedaYing Shi
    • H04B10/08H04B10/06H04J14/00
    • H04J3/1694H04B10/6911
    • An optical line terminal includes an optical network interface having an optical receiver unit to convert an optical signal received from an optical network unit into an electrical signal and output a direct current bias monitoring signal and an error code detector to detect an error code in the electrical signal to output an error code indication signal, a storage to store therein a direct current bias table indicating a direct current bias corresponding to a direct current bias control parameter of the optical network units and a dynamic band allocation information table indicating communication time slot information allotted to each optical network unit and a control unit to receive the direct current bias monitoring signal and the error code indication signal and supply the direct current bias control signal to the optical receiver unit to thereby form one feedback circuit together with the optical network interface.
    • 光线路终端包括光网络接口,其具有光接收单元,用于将从光网络单元接收的光信号转换为电信号并输出​​直流偏置监视信号,并且错误代码检测器检测电气中的错误代码 信号以输出错误代码指示信号,存储器存储指示对应于光网络单元的直流偏置控制参数的直流偏置的直流偏置表和指示分配的通信时隙信息的动态频带分配信息表 到每个光网络单元和控制单元,以接收直流偏置监视信号和错误代码指示信号,并将直流偏置控制信号提供给光接收器单元,从而与光网络接口一起形成一个反馈电路。
    • 56. 发明授权
    • Burst mode receiver
    • 突发模式接收器
    • US08284872B2
    • 2012-10-09
    • US12687184
    • 2010-01-14
    • Jun SugawaHiroki IkedaMasayoshi Yagyu
    • Jun SugawaHiroki IkedaMasayoshi Yagyu
    • H04L27/00
    • H04L7/0083
    • A burst mode receiver including a CDR circuit that does not perform bit synchronization determination at a wrong position even when a burst signal waveform containing a distortion is input is provided. The burst mode receiver includes a CDR circuit for reproducing clock and data from a received signal, a bit synchronization determination circuit for determining whether the CDR circuit is in an optimum phase, a waveform distortion determination circuit for determining from the received signal whether there is waveform distortion, and a CDR output enable determination circuit for determining whether an output of the CDR circuit is valid or invalid. The CDR output enable determination circuit performs CDR output enable determination based on a bit synchronization determination result and a waveform distortion determination result.
    • 提供了包括即使当输入包含失真的脉冲串信号波形时也不在错误位置执行位同步确定的CDR电路的突发模式接收机。 突发模式接收机包括用于从接收信号再现时钟和数据的CDR电路,用于确定CDR电路是否处于最佳相位的位同步确定电路,用于根据接收信号确定是否存在波形的波形失真确定电路 失真和用于确定CDR电路的输出是有效还是无效的CDR输出使能确定电路。 CDR输出使能判定电路基于位同步判定结果和波形失真判定结果进行CDR输出使能判定。