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    • 72. 发明授权
    • Digital protective relaying systems
    • 数字保护中继系统
    • US4371908A
    • 1983-02-01
    • US345356
    • 1982-02-03
    • Fumio AndowTakayuki KobayashiRyotaro KondowYoshiji Nii
    • Fumio AndowTakayuki KobayashiRyotaro KondowYoshiji Nii
    • H02H3/30H02H7/26
    • H02H3/30H02H7/261
    • In a digital protective relaying device for protecting electric power transmission line including an electric station at each end thereof, and each electric station including at least one circuit breaker to be tripped by a protective relay for protecting the own station, a digital protective relay provided with a computer is further provided at each end so as to receive electrical data in digital form from the electric stations for operating in an ordinary protective operation. As a control condition occurs in one station, the condition is sent to a digital protective relay provided at the other end of the transmission line, thereby changing the operational steps of the computer included in the protective relay.
    • 在一种数字保护继电装置中,用于保护在其每一端包括电站的电力输电线,并且每个电站包括至少一个断路器,以便由用于保护本站的保护继电器跳闸;数字保护继电器, 在每一端进一步设置计算机,以便从电站接收数字形式的电子数据,以便在普通的保护操作中操作。 由于在一个站中发生控制状况,因此将该条件发送到在传输线的另一端提供的数字保护继电器,从而改变保护继电器中包括的计算机的操作步骤。
    • 79. 发明授权
    • Digital signal processing apparatus
    • 数字信号处理装置
    • US08977141B2
    • 2015-03-10
    • US13983233
    • 2012-02-07
    • Kengo HorikoshiEtsushi YamazakiTakayuki KobayashiEiji YoshidaYutaka Miyamoto
    • Kengo HorikoshiEtsushi YamazakiTakayuki KobayashiEiji YoshidaYutaka Miyamoto
    • H04B10/06H04B1/10H03H21/00H04B10/61H04L25/03H04B10/00
    • H04B1/10H03H21/0012H03H2021/0092H04B10/616H04L25/03261
    • A parameter of an adaptive filter is optimized so that inter-symbol interference having an amount corresponding to an inserted fixed filter remains. A digital signal processing apparatus which is included in an optical signal receiver and processes a digital signal converted from an optical signal is provided with: a linear adaptive filter which applies a dynamically controllable linear transfer function to the digital signal; a maximum likelihood sequence decoder which applies a transfer function of a transmission-path model to a plurality of signal sequence candidates to generate a plurality of reference signals, and decodes a reception signal using maximum likelihood sequence estimation which evaluates the differences between an output signal of the linear adaptive filter and the reference signals to estimate the most likely transmission time sequence; a signal regenerator which generates a signal corresponding to decoded data from the maximum likelihood sequence decoder; a feedback distortion adding filter which adds distortion that is equivalent to the transmission-path model used in the maximum likelihood sequence decoder to an output signal of the signal regenerator; and an adaptive equalization filter control block which updates a tap coefficient of the linear adaptive filter in accordance with an LMS algorithm using the difference between a target signal that is an output signal of the feedback distortion adding filter and the digital signal as an error signal.
    • 对自适应滤波器的参数进行优化,使得具有与插入的固定滤波器相对应的量的符号间干扰保留。 包括在光信号接收机中并处理从光信号转换的数字信号的数字信号处理装置具有:向数字信号施加动态可控线性传递函数的线性自适应滤波器; 最大似然序列解码器,其将传输路径模型的传递函数应用于多个信号序列候选以产生多个参考信号,并且使用最大似然序列估计解码接收信号,所述最大似然序列估计用于评估接收信号的输出信号 线性自适应滤波器和参考信号来估计最可能的传输时间序列; 信号再生器,其生成对应于来自最大似然序列解码器的解码数据的信号; 将与最大似然序列解码器中使用的传输路径模型相当的失真与信号再生器的输出信号相加的反馈失真相加滤波器; 以及自适应均衡滤波器控制块,其使用作为反馈失真相加滤波器的输出信号的目标信号和数字信号之间的差作为误差信号,根据LMS算法更新线性自适应滤波器的抽头系数。