公开(公告)号：US20140028319A1

公开(公告)日：2014-01-30

申请号：US14112115

申请日：2011-12-09

申请人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

发明人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

IPC分类号： G01R31/327

CPC分类号： G01R31/327 ,  G01R31/1254 ,  H01H33/26 ,  H01H33/59 ,  H02B13/065

摘要： A discharge location determination unit includes: discharge detection circuits connected to metal electrodes, respectively, and to which a signal due to discharge is input; and a calculation circuit to which signals output from the discharge detection circuits are input, wherein, if the intensity difference or intensity ratio between the two output signals is within a predetermined value, the calculation circuit determines that the discharge location is inside a tank, otherwise the calculation circuit determines that the discharge location is outside the tank.

摘要翻译： 放电位置确定单元包括：分别连接到金属电极并且输入由于放电的信号的放电检测电路; 以及输入从放电检测电路输出的信号的计算电路，其中，如果两个输出信号之间的强度差或强度比在预定值内，则计算电路确定放电位置在罐内，否则 计算电路确定排放位置在罐外。

公开(公告)号：US20140166622A1

公开(公告)日：2014-06-19

申请号：US14233305

申请日：2012-08-24

申请人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

发明人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

IPC分类号： H01H33/26

CPC分类号： H01H33/26 ,  G01R31/1227 ,  H01H33/668 ,  H02B13/0655

摘要： Capacitors (5a, 5b) are provided in the insulators of bushings (4a, 4b), respectively. One ends of the capacitors (5a, 5b) are connected to central conductors (3a, 3b) side, and the other ends are connected to a tank (1) side at the ground potential. When a discharge signal from the outside of the tank (1) reaches the capacitors (5a, 5b) through the central conductors (3a, 3b), the capacitors (5a, 5b) work as a filter to attenuate and prevent the signal in the frequency band of the discharge waveform from propagating to the inside of the tank (1). When an antenna (7) placed in the tank (1) receives a signal in the frequency band of the discharge waveform, a discharge detection unit (20) determines that a discharge inside the tank has been detected.

摘要翻译： 电容器（5a，5b）分别设置在衬套（4a，4b）的绝缘体中。 电容器（5a，5b）的一端与中心导体（3a，3b）侧连接，另一端与接地电位的水箱（1）侧连接。 当来自罐（1）的外部的放电信号通过中心导体（3a，3b）到达电容器（5a，5b）时，电容器（5a，5b）用作滤波器，以衰减并防止 放电波形的频带从传播到罐（1）的内部。 当放置在储罐（1）中的天线（7）接收到放电波形的频带中的信号时，放电检测单元（20）确定已经检测到罐内的放电。

公开(公告)号：US09190232B2

公开(公告)日：2015-11-17

申请号：US14233305

申请日：2012-08-24

申请人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

发明人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

IPC分类号： H01H33/26 ,  H02B13/065 ,  H01H33/668 ,  G01R31/12

CPC分类号： H01H33/26 ,  G01R31/1227 ,  H01H33/668 ,  H02B13/0655

摘要： Capacitors (5a, 5b) are provided in the insulators of bushings (4a, 4b), respectively. One ends of the capacitors (5a, 5b) are connected to central conductors (3a, 3b) side, and the other ends are connected to a tank (1) side at the ground potential. When a discharge signal from the outside of the tank (1) reaches the capacitors (5a, 5b) through the central conductors (3a, 3b), the capacitors (5a, 5b) work as a filter to attenuate and prevent the signal in the frequency band of the discharge waveform from propagating to the inside of the tank (1). When an antenna (7) placed in the tank (1) receives a signal in the frequency band of the discharge waveform, a discharge detection unit (20) determines that a discharge inside the tank has been detected.

摘要翻译： 电容器（5a，5b）分别设置在衬套（4a，4b）的绝缘体中。 电容器（5a，5b）的一端与中心导体（3a，3b）侧连接，另一端与接地电位的水箱（1）侧连接。 当来自罐（1）的外部的放电信号通过中心导体（3a，3b）到达电容器（5a，5b）时，电容器（5a，5b）用作滤波器，以衰减并防止 放电波形的频带从传播到罐（1）的内部。 当放置在储罐（1）中的天线（7）接收到放电波形的频带中的信号时，放电检测单元（20）确定已经检测到罐内的放电。

公开(公告)号：US09182447B2

公开(公告)日：2015-11-10

申请号：US14112115

申请日：2011-12-09

申请人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

发明人： Junichi Abe ,  Shinji Sato ,  Tomoko Tanabe ,  Naoaki Inoue

IPC分类号： G01R31/02 ,  H01H31/12 ,  G01R31/327 ,  H01H33/26 ,  H01H33/59 ,  G01R31/12 ,  H02B13/065

CPC分类号： G01R31/327 ,  G01R31/1254 ,  H01H33/26 ,  H01H33/59 ,  H02B13/065

摘要： A discharge location determination unit includes: discharge detection circuits connected to metal electrodes, respectively, and to which a signal due to discharge is input; and a calculation circuit to which signals output from the discharge detection circuits are input, wherein, if the intensity difference or intensity ratio between the two output signals is within a predetermined value, the calculation circuit determines that the discharge location is inside a tank, otherwise the calculation circuit determines that the discharge location is outside the tank.

摘要翻译： 放电位置确定单元包括：分别连接到金属电极并且输入由于放电的信号的放电检测电路; 以及输入从放电检测电路输出的信号的计算电路，其中，如果两个输出信号之间的强度差或强度比在预定值内，则计算电路确定放电位置在罐内，否则 计算电路确定排放位置在罐外。

公开(公告)号：US08861648B2

公开(公告)日：2014-10-14

申请号：US13260297

申请日：2010-03-31

申请人： Hidemi Noguchi ,  Junichi Abe ,  Tomoyuki Yamase ,  Yasushi Amamiya

发明人： Hidemi Noguchi ,  Junichi Abe ,  Tomoyuki Yamase ,  Yasushi Amamiya

IPC分类号： H04B17/00 ,  H04B3/46 ,  H03L7/081 ,  H04L7/033 ,  H04L7/00

CPC分类号： H04L7/033 ,  H03L7/0816 ,  H04L7/0029 ,  H04L7/0037

摘要： To adequately perform sampling, a receiving device that solves problems that involve an increase in circuit area and an increase in cost, is provided.A/D converter 2 samples a coherent signal that is an analog signal in synchronization with a sampling clock signal so as to convert the analog signal into a digital signal. DSP 3 demodulates the digital signal converted by A/D converter 2 and computes a phase of the sampling clock signal in which an error rate of the digital signal is the minimum based on the demodulated digital signal. Sampling clock extraction circuit 4 extracts a clock signal having a symbol rate of the coherent signal therefrom. Phase adjustment circuit 5 adjusts the phase of the clock signal extracted by sampling clock extraction circuit 4 to the phase computed by DSP 3 and generates a clock signal having the adjusted phase as the sampling clock signal.

摘要翻译： 为了充分执行采样，提供了解决涉及电路面积增加和成本增加的问题的接收装置。 A / D转换器2与采样时钟信号同步地采样模拟信号的相干信号，以将模拟信号转换为数字信号。 DSP 3解调由A / D转换器2转换的数字信号，并且基于解调的数字信号计算数字信号的错误率为最小的采样时钟信号的相位。 采样时钟提取电路4从其中提取具有相干信号的符号速率的时钟信号。 相位调整电路5将由采样时钟提取电路4提取的时钟信号的相位调整为由DSP3计算的相位，并生成具有调整后的相位的时钟信号作为采样时钟信号。

公开(公告)号：US08750442B2

公开(公告)日：2014-06-10

申请号：US13885364

申请日：2012-10-01

申请人： Junichi Abe

发明人： Junichi Abe

IPC分类号： H04B1/10 ,  H04B3/46 ,  H03K5/159

CPC分类号： H04L1/0036 ,  H04B10/611 ,  H04B10/616

摘要： An objective is to provide a digital receiver and a method of compensating waveform that are capable of compensating waveform distortion without increasing the circuit size. A digital receiver 100 according to the present invention includes distortion compensation filters 103 that compensate waveform distortion included in an input signal, skew compensation amount setting units 106 for setting a skew compensation amount used for compensating phase distortion among the waveform distortion, amplitude compensation amount setting units 107 for setting an amplitude compensation amount used for compensating amplitude of the input signal that attenuates upon the compensation of the phase distortion using the skew compensation amount, and filter coefficient calculation circuits 108 for determining a filter coefficient to be set to the distortion compensation filters 103 based on the skew compensation amount and the amplitude compensation amount.

摘要翻译： 目的是提供一种数字接收机和补偿波形的方法，该波形能够在不增加电路尺寸的情况下补偿波形失真。 根据本发明的数字接收机100包括补偿输入信号中包括的波形失真的失真补偿滤波器103，用于设置用于补偿波形失真的相位失真的偏斜补偿量的偏斜补偿量设定单元106，振幅补偿量设定 用于设定用于补偿使用偏斜补偿量补偿相位失真的输入信号的幅度衰减的振幅补偿量的单元107，以及用于确定要设置到失真补偿滤波器的滤波器系数的滤波器系数计算电路108 103，基于偏斜补偿量和振幅补偿量。

公开(公告)号：US20130266308A1

公开(公告)日：2013-10-10

申请号：US13995279

申请日：2011-12-16

申请人： Kiyoshi Fukuchi ,  Junichi Abe ,  Wakako Yasuda

发明人： Kiyoshi Fukuchi ,  Junichi Abe ,  Wakako Yasuda

IPC分类号： H04B10/61

CPC分类号： H04B10/616

摘要： The disclosed coherent optical receiver includes a local light source; a 90-degree hybrid circuit; an optoelectronic converter; an analog-to-digital converter; a skew addition unit; and a FFT operation unit. The 90-degree hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs multiple optical signals separated into a plurality of signal components. The optoelectronic converter detects the optical signal and outputs a detected electrical signal. The analog-to-digital converter digitizes the detected electrical signal and outputs a detected digital signal. The skew addition unit adds to the detected digital signal an additional skew amount whose absolute value is equal to, whose sign is opposite to a skew amount of a difference in propagation delay in each lane connected to each output channel of the 90-degree hybrid circuit. The FFT operation unit performs a fast Fourier transform on the output from the skew addition unit.

摘要翻译： 所公开的相干光接收机包括局部光源; 90度混合电路; 光电转换器; 一个模拟 - 数字转换器; 偏斜加法单元; 和FFT运算单元。 90度混合电路使多路信号光与本地光源的本地光干涉，并输出分离成多个信号分量的多个光信号。 光电转换器检测光信号并输出​​检测到的电信号。 模数转换器对检测到的电信号进行数字化并输出检测到的数字信号。 偏移加法单元将检测到的数字信号的绝对值等于其符号与连接到90度混合电路的每个输出通道的每个通道中的传播延迟差的偏斜量相反的附加偏移量相加 。 FFT运算部对偏斜加法部的输出进行快速傅里叶变换。

公开(公告)号：US20130051790A1

公开(公告)日：2013-02-28

申请号：US13696516

申请日：2011-05-13

申请人： Wakako Yasuda ,  Junichi Abe ,  Kiyoshi Fukuchi

发明人： Wakako Yasuda ,  Junichi Abe ,  Kiyoshi Fukuchi

IPC分类号： H04B10/08 ,  H04B10/06

CPC分类号： H04B10/616 ,  H04B10/6151 ,  H04J14/02 ,  H04J14/06

摘要： In a coherent optical receiver, sufficient demodulation becomes impossible and consequently receiving performance deteriorates if an interchannel skew arises, therefore, a coherent optical receiver according to an exemplary aspect of the invention includes a local light source; a 90-degree hybrid circuit; an optoelectronic converter; an analog-to-digital converter; and a digital signal processing unit, wherein the 90-degree hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs a plurality of optical signals separated into a plurality of signal components; the optoelectronic converter detects the optical signals and outputs detected electrical signals; the analog-to-digital converter quantizes the detected electrical signals and outputs quantized signals; and the digital signal processing unit includes a skew compensation unit for compensating a difference in propagation delay between the plurality of signal components, and a demodulation unit for demodulating the quantized signals.

摘要翻译： 在相干光接收机中，如果出现通道间偏斜，则不能进行足够的解调，因此接收性能恶化，因此根据本发明的示例性方面的相干光接收机包括本地光源; 90度混合电路; 光电转换器; 一个模拟 - 数字转换器; 以及数字信号处理单元，其中所述90度混合电路使多路复用信号光干扰来自所述本地光源的局部光，并且输出分离成多个信号分量的多个光信号; 光电转换器检测光信号并输出​​检测到的电信号; 模数转换器对检测到的电信号进行量化并输出量化信号; 并且数字信号处理单元包括用于补偿多个信号分量之间的传播延迟差的偏斜补偿单元和用于解调量化信号的解调单元。

公开(公告)号：US20120237202A1

公开(公告)日：2012-09-20

申请号：US13505199

申请日：2011-09-02

申请人： Junichi Abe ,  Wakako Yasuda ,  Kiyoshi Fukuchi

发明人： Junichi Abe ,  Wakako Yasuda ,  Kiyoshi Fukuchi

IPC分类号： H04B10/08

CPC分类号： H04B10/616 ,  H04B10/0775 ,  H04B10/6164 ,  H04B10/6165

摘要： In a coherent optical receiver, sufficient demodulation becomes impossible and consequently receiving performance deteriorates if an inter-channel skew arises, therefore, a coherent optical receiver according to an exemplary aspect of the invention includes a local light source, a 90° hybrid circuit, an optoelectronic converter, an analog to digital converter, and a digital signal processing unit; wherein the 90° hybrid circuit makes multiplexed signal light interfere with local light from the local light source, and outputs a plurality of optical signals separated into a plurality of signal components; the optoelectronic converter detects the optical signals and outputs detected electrical signals; the analog to digital converter quantizes the detected electrical signals and outputs quantized signals; the digital signal processing unit includes a skew compensation unit for compensating a difference in propagation delay between the plurality of signal components, and an FFT operation unit for performing a fast Fourier transform process on the quantized signals; and wherein the difference in propagation delay is calculated on the basis of a plurality of peak values with a central focus on one peak value in the results of performing the fast Fourier transform process.

摘要翻译： 在相干光接收机中，如果发生信道间偏斜，则不可能进行足够的解调，因此接收性能恶化，因此，根据本发明的示例性方面的相干光接收机包括本地光源，90°混合电路， 光电转换器，模数转换器和数字信号处理单元; 其中所述90°混合电路使多路复用信号光干扰来自所述本地光源的局部光，并且输出分离成多个信号分量的多个光信号; 光电转换器检测光信号并输出​​检测到的电信号; 模数转换器对检测到的电信号进行量化并输出量化信号; 数字信号处理单元包括用于补偿多个信号分量之间的传播延迟差的偏斜补偿单元和用于对量化信号执行快速傅里叶变换处理的FFT运算单元; 并且其中基于执行快速傅里叶变换处理的结果中的中心聚焦于一个峰值的多个峰值来计算传播延迟的差异。

公开(公告)号：US20120002703A1

公开(公告)日：2012-01-05

申请号：US13256676

申请日：2010-03-31

申请人： Fumihiro Yamashita ,  Junichi Abe ,  Kiyoshi Kobayashi

发明人： Fumihiro Yamashita ,  Junichi Abe ,  Kiyoshi Kobayashi

IPC分类号： H04B1/7136

CPC分类号： H04L5/0044 ,  H04L27/2614 ,  H04L27/2634 ,  H04L27/264 ,  H04L27/2647

摘要： In a wireless transmission system that transmits and receives a modulated signal between a transmitter and a receiver that are coupled through a wireless transmission path, the transmitter includes a spectrum division filter bank dividing the modulated signal and generating a plurality of sub-spectrum signals each of which is arranged at a predetermined frequency position, and subjects the plurality of sub-spectrum signals arranged in spectra to a direct spectrum division transmission, and the receiver includes a spectrum combination filter bank extracting the plurality of sub-spectrum signals from the received signals arranged in spectra and subjected to the direct spectrum division transmission to combine the sub-spectrum signals into an original modulated signal.

摘要翻译： 在通过无线传输路径耦合的发射机和接收机之间发送和接收调制信号的无线传输系统中，发射机包括分频滤波器组，分频调制信号并产生多个子频谱信号， 其被布置在预定频率位置，并且将在频谱中排列的多个子频谱信号进行直接频谱分割传输，并且接收机包括频谱组合滤波器组，从所接收的信号中排出多个子频谱信号 并进行直接光谱分割传输以将子频谱信号组合成原始调制信号。