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    TRANSMISSION PATH MONITORING METHOD AND DEVICE
    1.
    发明申请
    TRANSMISSION PATH MONITORING METHOD AND DEVICE 有权
    传输路径监控方法和设备

    公开(公告)号：US20100027993A1

    公开(公告)日：2010-02-04

    申请号：US12559768

    申请日：2009-09-15

    申请人： Katsuji YAMAGUCHI ,  Junichi Yoshimura

    发明人： Katsuji YAMAGUCHI ,  Junichi Yoshimura

    IPC分类号： H04B17/02

    CPC分类号： H04B10/0795 ,  H04B10/2972 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0275 ,  H04J14/0276 ,  H04J14/0279 ,  H04J14/0287

    摘要： Upon transmission path monitoring, when a monitoring signal responded by one of optical repeaters provided in a main signal transmission path is superposed on an optical main signal and sent out to the main signal transmission path, the optical main signal is branched to optical fibers, that are optical transmission paths, provided separately from the main signal transmission path and each provided with optical repeaters corresponding to the optical repeaters provided in the main signal transmission path, an optical main signal is selected from a desired optical fiber to be monitored from among the optical transmission paths and the monitoring signal is extracted from the optical main signal selected, thereby checking the quality of the desired optical fiber.

    摘要翻译： 在传输路径监视时，当由主信号传输路径中设置的光中继器之一响应的监视信号叠加在光主信号上并发送到主信号传输路径时，光主信号分支到光纤， 是与主信号传输路径分开设置并且各自设置有与设置在主信号传输路径中的光中继器相对应的光中继器的光传输路径，从主要信号传输路径中要监视的期望光纤中选择光主信号 从所选择的光学主信号中提取传输路径和监视信号，从而检查所需光纤的质量。

    SHEET FEEDING DEVICE AND IMAGE FORMING APPARATUS
    3.
    发明申请
    SHEET FEEDING DEVICE AND IMAGE FORMING APPARATUS 有权

    公开(公告)号：US20220297963A1

    公开(公告)日：2022-09-22

    申请号：US17684722

    申请日：2022-03-02

    申请人： Ryo SUZUKI ,  Ryohei MORISAKI ,  Kenji HARI ,  Nagayasu YOSHIDA ,  Katsuji YAMAGUCHI

    发明人： Ryo SUZUKI ,  Ryohei MORISAKI ,  Kenji HARI ,  Nagayasu YOSHIDA ,  Katsuji YAMAGUCHI

    IPC分类号： B65H7/14 ,  B65H1/14

    摘要： A sheet feeding device feeds a sheet in a feed direction. The sheet feeding device includes a loading portion, a feeler, and a first detection sensor. The sheet is to be placed on the loading portion. The feeler rotates from a reference position to a pushed position around a support shaft in response to a push by a downstream end of the sheet, which is placed on the loading portion, in the feeding direction. The first detection sensor detects a rotation of the feeler from one of the reference position and the pushed position to the other of the reference position and the pushed position. The loading portion includes a second detection sensor to detect a state in which the sheet is placed on the loading portion.

    Transmission path monitoring method and device
    4.
    发明授权
    Transmission path monitoring method and device 有权
    传输路径监控方法及装置

    公开(公告)号：US08326144B2

    公开(公告)日：2012-12-04

    申请号：US12559768

    申请日：2009-09-15

    申请人： Katsuji Yamaguchi ,  Junichi Yoshimura

    发明人： Katsuji Yamaguchi ,  Junichi Yoshimura

    IPC分类号： H04B10/08 ,  H04B17/00 ,  H04B13/02

    CPC分类号： H04B10/0795 ,  H04B10/2972 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0275 ,  H04J14/0276 ,  H04J14/0279 ,  H04J14/0287

    摘要： Upon transmission path monitoring, when a monitoring signal responded by one of optical repeaters provided in a main signal transmission path is superposed on an optical main signal and sent out to the main signal transmission path, the optical main signal is branched to optical fibers, that are optical transmission paths, provided separately from the main signal transmission path and each provided with optical repeaters corresponding to the optical repeaters provided in the main signal transmission path, an optical main signal is selected from a desired optical fiber to be monitored from among the optical transmission paths and the monitoring signal is extracted from the optical main signal selected, thereby checking the quality of the desired optical fiber.

    摘要翻译： 在传输路径监视时，当由主信号传输路径中设置的光中继器之一响应的监视信号叠加在光主信号上并发送到主信号传输路径时，光主信号分支到光纤， 是与主信号传输路径分开设置并且各自设置有与设置在主信号传输路径中的光中继器相对应的光中继器的光传输路径，从主要信号传输路径中要监视的期望光纤中选择光主信号 从所选择的光学主信号中提取传输路径和监视信号，从而检查所需光纤的质量。

    Terminal apparatus and controlling method for optical output power
    5.
    发明申请
    Terminal apparatus and controlling method for optical output power 有权
    光输出功率端子装置及控制方法

    公开(公告)号：US20050207754A1

    公开(公告)日：2005-09-22

    申请号：US10893410

    申请日：2004-07-19

    申请人： Katsuji Yamaguchi ,  Kenichi Shinmura ,  Masato Nagayama ,  Tadayuki Takada

    发明人： Katsuji Yamaguchi ,  Kenichi Shinmura ,  Masato Nagayama ,  Tadayuki Takada

    IPC分类号： H04B10/07 ,  H04B10/077 ,  H04B10/079 ,  H04B10/25 ,  H04B10/2507 ,  H04B10/294 ,  H04B17/00 ,  H04J14/00 ,  H04J14/02 ,  H04B10/08

    CPC分类号： H04B10/077 ,  H04B10/07955 ,  H04J14/0221

    摘要： A terminal apparatus by which, even where BER data, for example, of an optical signal of an existing wavelength cannot be utilized, the optical output powers of the existing wavelength and an extension wavelength can be adjusted in a short period of time while eliminating quality degradation of the existing circuit. The terminal apparatus includes a level controlling section for controlling a total optical output power of an existing wavelength signal light and an extension wavelength signal light to a fixed level, a monitoring unit capable of monitoring the optical output power for each wavelength, and a controller for controlling the optical output power of the extension wavelength signal light so that the optical output power of the existing wavelength signal light monitored by the monitoring unit may not be lower than a minimum permissible optical output power.

    摘要翻译： 即使在不能利用现有波长的光信号的BER数据的情况下，可以在短时间内调整现有波长和延长波长的光输出功率，同时消除质量 现有电路的劣化。 终端装置包括：电平控制部，用于将现有波长信号光和延长波长信号光的总光输出功率控制到固定电平;监视单元，其能够监视各波长的光输出功率;以及控制器， 控制延长波长信号光的光输出功率，使得由监视单元监视的现有波长信号光的光输出功率可能不低于最小允许光输出功率。

    Method, apparatus, and system for evaluating faulty point in multi-stage optical amplifying and repeating transmission line
    6.
    发明授权
    Method, apparatus, and system for evaluating faulty point in multi-stage optical amplifying and repeating transmission line 有权
    用于评估多级光放大和重复传输线路故障点的方法，装置和系统

    公开(公告)号：US07657176B2

    公开(公告)日：2010-02-02

    申请号：US11197595

    申请日：2005-08-05

    申请人： Izumi Yokota ,  Katsuji Yamaguchi

    发明人： Izumi Yokota ,  Katsuji Yamaguchi

    IPC分类号： H04B10/08 ,  H04B10/00

    CPC分类号： H04B10/0791 ,  H04B10/07953 ,  H04B10/0797

    摘要： A method, apparatus, and system for evaluation of a faulty point in a multi-stage optical amplifying and repeating transmission line which provides a totally new technique for searching for faults neither of the typical “command response type” or the “DCR method”. When a fault occurs in an optical submarine cable, the profile exhibited by the optical spectral characteristics of the optical noise signal (ASE) successively amplified through the chain of optical amplifying repeaters at the downstream side of the faulty point changes in accordance with the number of the repeaters. The technique finds the number of the repeaters until the faulty point based on the change in the profile so as to evaluate the location of the faulty point and has a step (S11) of monitoring the optical spectrum at the light receiving end and a step (S12) of determining the location of the faulty point from the monitored optical spectrum.

    摘要翻译： 一种用于评估多级光放大和重复传输线中的故障点的方法，装置和系统，其提供了用于搜索典型“命令响应类型”或“DCR方法”的全新技术。 当光学海底电缆发生故障时，由故障点下游侧的光放大中继器链连续放大的光学噪声信号（ASE）的光谱特性所呈现的分布根据 中继器。 该技术基于轮廓的变化来找到直到故障点的中继器的数量，以评估故障点的位置，并且具有监视光接收端的光谱的步骤（S11）和步骤 S12）从所监视的光谱确定故障点的位置。

    Terminal apparatus and controlling method for optical output power
    7.
    发明授权
    Terminal apparatus and controlling method for optical output power 有权
    光输出功率端子装置及控制方法

    公开(公告)号：US07280763B2

    公开(公告)日：2007-10-09

    申请号：US10893410

    申请日：2004-07-19

    申请人： Katsuji Yamaguchi ,  Kenichi Shinmura ,  Masato Nagayama ,  Tadayuki Takada

    发明人： Katsuji Yamaguchi ,  Kenichi Shinmura ,  Masato Nagayama ,  Tadayuki Takada

    IPC分类号： H04B10/20 ,  H04J14/02

    CPC分类号： H04B10/077 ,  H04B10/07955 ,  H04J14/0221

    摘要： A terminal apparatus by which, even where BER data, for example, of an optical signal of an existing wavelength cannot be utilized, the optical output powers of the existing wavelength and an extension wavelength can be adjusted in a short period of time while eliminating quality degradation of the existing circuit. The terminal apparatus includes a level controlling section for controlling a total optical output power of an existing wavelength signal light and an extension wavelength signal light to a fixed level, a monitoring unit capable of monitoring the optical output power for each wavelength, and a controller for controlling the optical output power of the extension wavelength signal light so that the optical output power of the existing wavelength signal light monitored by the monitoring unit may not be lower than a minimum permissible optical output power.

    摘要翻译： 即使在不能利用现有波长的光信号的BER数据的情况下，可以在短时间内调整现有波长和延长波长的光输出功率，同时消除质量 现有电路的劣化。 终端装置包括：电平控制部，用于将现有波长信号光和延长波长信号光的总光输出功率控制到固定电平;监视单元，其能够监视各波长的光输出功率;以及控制器， 控制延长波长信号光的光输出功率，使得由监视单元监视的现有波长信号光的光输出功率可能不低于最小允许光输出功率。

    Method, apparatus, and system for evaluating faulty point in multi-stage optical amplifying and repeating transmission line
    8.
    发明申请
    Method, apparatus, and system for evaluating faulty point in multi-stage optical amplifying and repeating transmission line 有权
    用于评估多级光放大和重复传输线路故障点的方法，装置和系统

    公开(公告)号：US20060216038A1

    公开(公告)日：2006-09-28

    申请号：US11197595

    申请日：2005-08-05

    申请人： Izumi Yokota ,  Katsuji Yamaguchi

    发明人： Izumi Yokota ,  Katsuji Yamaguchi

    IPC分类号： H04B10/00

    CPC分类号： H04B10/0791 ,  H04B10/07953 ,  H04B10/0797

    摘要： A method, apparatus, and system for evaluation of a faulty point in a multi-stage optical amplifying and repeating transmission line which provides a totally new technique for searching for faults neither of the typical “command response type” or the “DCR method”. When a fault occurs in an optical submarine cable, the profile exhibited by the optical spectral characteristics of the optical noise signal (ASE) successively amplified through the chain of optical amplifying repeaters at the downstream side of the faulty point changes in accordance with the number of the repeaters. The technique finds the number of the repeaters until the faulty point based on the change in the profile so as to evaluate the location of the faulty point and has a step (S11) of monitoring the optical spectrum at the light receiving end and a step (S12) of determining the location of the faulty point from the monitored optical spectrum.

    摘要翻译： 一种用于评估多级光放大和重复传输线中的故障点的方法，装置和系统，其提供了用于搜索典型“命令响应类型”或“DCR方法”的全新技术。 当光学海底电缆发生故障时，由故障点下游侧的光放大中继器链连续放大的光学噪声信号（ASE）的光谱特性所呈现的分布根据 中继器。 该技术基于轮廓的变化来找到直到故障点为止的中继器的数量，以评估故障点的位置，并且具有监视光接收端的光谱的步骤（S11）和步骤 （S12）从所监视的光谱确定故障点的位置。