公开(公告)号：US5168224A

公开(公告)日：1992-12-01

申请号：US490581

申请日：1990-05-16

申请人： Takuya Maruizumi ,  Yusuke Yajima ,  Yasuhiro Mitsui

发明人： Takuya Maruizumi ,  Yusuke Yajima ,  Yasuhiro Mitsui

IPC分类号： G01N23/04 ,  G01R33/44 ,  G01V3/14

CPC分类号： G01V3/14 ,  G01N23/04 ,  G01R33/441

摘要： A method and an apparatus for detecting the existence of a specific substance in an article to be inspected in which an electromagnetic wave having energy in the vicinity of transition energy between spin states of an atomic nucleus applied with energy splitting due to electrostatic interaction between said atomic nucleus in the specific substance and an electric field in the substance which is peculiar to said specific substance is irradiated to the article to be inspected, thereby detecting transition between said spin states.

摘要翻译： PCT No.PCT / JP89 / 01032 Sec。 371日期：1990年5月16日 102（e）日期1990年5月16日PCT申请日1989年10月6日。一种用于检测被检物品中特定物质的存在的方法和装置，其中具有在过渡能量附近的能量的电磁波 由于特定物质中的所述原子核之间的静电相互作用而产生能量分裂的原子核的自旋态和所述特定物质特有的物质中的电场被照射到待检查的物品上，从而检测所述 自旋状态。

公开(公告)号：US08428457B2

公开(公告)日：2013-04-23

申请号：US12767750

申请日：2010-04-26

申请人： Masahiko Mizutani ,  Yusuke Yajima ,  Akihiko Tsuchiya

发明人： Masahiko Mizutani ,  Yusuke Yajima ,  Akihiko Tsuchiya

IPC分类号： H04J14/00 ,  H04B10/06 ,  H04B10/20

CPC分类号： H04Q11/0067 ,  H04B10/272 ,  H04J3/0682 ,  H04J3/1694 ,  H04J14/0247 ,  H04J14/0252 ,  H04Q2011/0079 ,  H04Q2011/009

摘要： In the configuration of an optical communication system interconnecting a parent station and a plurality of child stations via an optical fiber network equipped with an optical splitter, RE is provided having a measuring unit for measuring a transmission distance or time to a child station, a determining unit for determining a timing when a child station transmits a signal, in accordance with a transmission bandwidth request from the child station, and a signal processing unit for processing a signal received from a child station and transmitting the processed signal to the parent station. When a burst signal is received from each child station at the determined timing, a portion of the header of the burst signal is deleted, and a dummy signal is inserted into the deleted area and a gap area between received burst signals to convert the burst signals into a series of signals to be sent to the parent station.

摘要翻译： 在通过配备有分光器的光纤网络将母站和多个子站互连的光通信系统的配置中，提供具有用于测量到子站的传输距离或时间的测量单元的确定 单元，用于根据来自子站的传输带宽请求确定子站发送信号的定时;以及信号处理单元，用于处理从子站接收的信号，并将处理的信号发送到母站。 当在所确定的定时从每个子站接收到突发信号时，突发信号的头部的一部分被删除，并且将虚拟信号插入到被删除的区域中，以及接收的突发信号之间的间隙区域以转换突发信号 成为一系列要发送给母站的信号。

公开(公告)号：US07936992B2

公开(公告)日：2011-05-03

申请号：US12434959

申请日：2009-05-04

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Akihiko Tsuchiya ,  Yoshinobu Morita

IPC分类号： H04J14/00

CPC分类号： H04B10/272 ,  H04J3/0682 ,  H04J3/1694

摘要： In a light reception element such as an APD (Avalanche Photo Diode) used for receiving a high-speed and weak optical signal, it is possible to prevent the phenomenon of distortion of a signal inputted after a large-level light is received. A PON (Passive Optical Network) system includes an OLT (Optical Line Terminal) which can impartially and effectively transmit light reception data to each ONU (Optical Network Unit). According to a light reception amplitude received by each ONU, an inter-frame gap of an appropriate length is assigned for each ONU. The OLT includes a unit for measuring and accumulating the reception light amplitude and data on the inter-frame gap of an appropriate length decided in advance according to the characteristic of the light reception device and generates a grant value for assuring an inter-frame gap of an appropriate length by using the both information.

摘要翻译： 在用于接收高速和弱光信号的APD（雪崩光电二极管）等光接收元件中，可以防止在接收到大电平光之后输入的信号的失真现象。 PON（Passive Optical Network，无源光网络）系统包括能够向每个ONU（Optical Network Unit，光网络单元）公正地有效地发送光接收数据的OLT（Optical Line Terminal）。 根据每个ONU接收的光接收幅度，为每个ONU分配适当长度的帧间间隔。 OLT包括用于根据光接收装置的特性预先确定的适当长度的帧间隙上的接收光幅度和数据的测量和累加单元，并生成用于确保帧间间隔的帧间间隔的准许值 通过使用这两个信息适当的长度。

公开(公告)号：US20100272436A1

公开(公告)日：2010-10-28

申请号：US12767750

申请日：2010-04-26

申请人： Masahiko Mizutani ,  Yusuke Yajima ,  Akihiko Tsuchiya

发明人： Masahiko Mizutani ,  Yusuke Yajima ,  Akihiko Tsuchiya

IPC分类号： H04B17/02

CPC分类号： H04Q11/0067 ,  H04B10/272 ,  H04J3/0682 ,  H04J3/1694 ,  H04J14/0247 ,  H04J14/0252 ,  H04Q2011/0079 ,  H04Q2011/009

摘要： In the configuration of an optical communication system interconnecting a parent station and a plurality of child stations via an optical fiber network equipped with an optical splitter, RE is provided having a measuring unit for measuring a transmission distance or time to a child station, a determining unit for determining a timing when a child station transmits a signal, in accordance with a transmission bandwidth request from the child station, and a signal processing unit for processing a signal received from a child station and transmitting the processed signal to the parent station. When a burst signal is received from each child station at the determined timing, a portion of the header of the burst signal is deleted, and a dummy signal is inserted into the deleted area and a gap area between received burst signals to convert the burst signals into a series of signals to be sent to the parent station.

摘要翻译： 在通过配备有分光器的光纤网络将母站和多个子站互连的光通信系统的配置中，提供具有用于测量到子站的传输距离或时间的测量单元的确定 单元，用于根据来自子站的传输带宽请求确定子站发送信号的定时;以及信号处理单元，用于处理从子站接收的信号，并将处理的信号发送到母站。 当在所确定的定时从每个子站接收到突发信号时，突发信号的头部的一部分被删除，并且将虚拟信号插入到被删除的区域中，以及接收的突发信号之间的间隙区域以转换突发信号 成为一系列要发送给母站的信号。

公开(公告)号：US20100067901A1

公开(公告)日：2010-03-18

申请号：US12379634

申请日：2009-02-26

申请人： Masahiko Mizutani ,  Yusuke Yajima ,  Yoshihiro Ashi

发明人： Masahiko Mizutani ,  Yusuke Yajima ,  Yoshihiro Ashi

IPC分类号： H04B10/08 ,  H04J14/02

CPC分类号： H04B10/03 ,  H04B10/07955 ,  H04B10/272 ,  H04L25/0298 ,  H04Q11/0067 ,  H04Q2011/0081 ,  H04Q2011/0083

摘要： In a passive optical network system, a parent station includes a reception circuit that receives an optical signal from each of child stations using a threshold used to identify if the optical signal is 0 or 1; a bandwidth setting unit that determines a time at which each child station sends an optical signal; a storage unit that stores thresholds and intensities of optical signals received from the child stations; and a control unit that sets a threshold, stored corresponding to a sending time, in,the reception circuit to control a reception of an optical signal. The control unit has a function that compares an intensity of a signal received from each child station at an optical signal reception time with information stored in the storage unit to detect and determine a fault in the child station or in the optical fiber connected to the child station.

摘要翻译： 在无源光网络系统中，母站包括接收电路，其使用用于识别光信号是0或1的阈值从每个子站接收光信号; 带宽设定单元，确定每个子站发送光信号的时间; 存储单元，其存储从所述子站接收的光信号的阈值和强度; 以及控制单元，其将接收电路中相应于发送时间存储的阈值设置为控制光信号的接收。 控制单元具有将在光信号接收时刻从每个子站接收的信号的强度与存储在存储单元中的信息进行比较的功能，以检测和确定子站中或连接到该小孩的光纤中的故障 站。

公开(公告)号：US20090317082A1

公开(公告)日：2009-12-24

申请号：US12486104

申请日：2009-06-17

申请人： Mitsunobu KIMURA ,  Yusuke Yajima ,  Masahiko Mizutani

发明人： Mitsunobu KIMURA ,  Yusuke Yajima ,  Masahiko Mizutani

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04N7/17309 ,  H04Q11/0067 ,  H04Q2011/0064

摘要： An optical line terminal (OLT), an optical network unit (ONT) and a passive optical network (PON) system are provided. A user of the ONU or a terminal connected with the ONU can accurately recognize the amount of a bandwidth allocated to the ONU without estimating the communication bandwidth. The OLT notifies each ONU of the amount of the bandwidth allocated to the ONU in response to a request transmitted from the ONU to the OLT. Each ONU receives bandwidth information from the OLT and displays thereon the bandwidth information or notifies the terminal connected with the ONU of the bandwidth information.

摘要翻译： 提供了一种光线路终端（OLT），光网络单元（ONT）和无源光网络（PON）系统。 ONU或与ONU连接的终端的用户可以在不估计通信带宽的情况下，准确地识别分配给ONU的带宽量。 OLT根据从ONU向OLT发送的请求，通知每个ONU分配给ONU的带宽量。 每个ONU从OLT接收带宽信息，并在其上显示带宽信息，或通知与ONU连接的终端带宽信息。

公开(公告)号：US20090169209A1

公开(公告)日：2009-07-02

申请号：US12073949

申请日：2008-03-12

申请人： Toshiki Sugawara ,  Hiroki Ikeda ,  Yusuke Yajima ,  Tohru Kazawa

发明人： Toshiki Sugawara ,  Hiroki Ikeda ,  Yusuke Yajima ,  Tohru Kazawa

IPC分类号： H04J14/00

CPC分类号： H04B10/27 ,  H04B10/272 ,  H04J3/0682

摘要： A general object of the present invention is to provide an optical communication system in which an optical transmission power of an optical communication apparatus is controlled to be a required minimum power that apparatuses of all subscribers in the optical communication system meet a prescribed error rate. An optical line terminating apparatus (OLT) transmits data to multiple optical network apparatuses (ONUs) at an optical intensity calculated based on information acquired from the multiple ONUs, which is related to optical intensities of signals that the multiple ONUs receive from the OLT, the optical intensity being calculated so that a minimum optical intensity of the optical intensities of the signals is greater than a predetermined value.

摘要翻译： 本发明的一般目的是提供一种光通信系统，其中光通信装置的光传输功率被控制为光通信系统中所有用户的设备满足规定的错误率所需的最小功率。 光线路终端装置（OLT）以基于从多个ONU获取的信息计算出的光强度向多个光网络装置（ONU）发送数据，其与多个ONU从OLT接收的信号的光强度相关， 计算光强度，使得信号的光强度的最小光强度大于预定值。

公开(公告)号：US20090052896A1

公开(公告)日：2009-02-26

申请号：US12254566

申请日：2008-10-20

申请人： Tohru KAZAWA ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

发明人： Tohru KAZAWA ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

IPC分类号： H04B10/20

CPC分类号： H04J3/1694 ,  H04J3/0682

摘要： A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying the level of distance measurement signals; a signal detection part detecting breaks in the distance measurement signals from the threshold control part; a transmission granting part determining the timing at which transmission of optical signals is granted, and a reset timing generation part that, there is notification of detection of a break in the distance measurement signal from the signal detection part while it is being notified that distance measurement is carried out to and from the subscriber-side communication devices from the transmission granting part, sends a reset signal indicating that the voltage level is reset to the threshold control part.

摘要翻译： 经由光合成装置与用户侧通信装置连接的站侧通信装置; 向所述用户侧通信设备发送距离测量请求信号; 通过接收距离测量信号来计算来自各个用户侧通信设备的光信号的传输延迟时间，并且包括：阈值控制部分，识别距离测量信号的电平; 信号检测部检测来自阈值控制部的距离测量信号的中断; 确定光信号的发送的定时的发送准许部分，以及在通知距离测量的情况下，存在来自信号检测部的距离测量信号中断的检测通知的复位定时生成部 向来自发送授权部分的用户侧通信设备执行，将表示电压电平复位的复位信号发送到阈值控制部分。

公开(公告)号：US07489869B2

公开(公告)日：2009-02-10

申请号：US11729974

申请日：2007-03-30

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04J3/0682

摘要： A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying the level of distance measurement signals; a signal detection part detecting breaks in the distance measurement signals from the threshold control part; a transmission granting part determining the timing at which transmission of optical signals is granted, and a reset timing generation part that, there is notification of detection of a break in the distance measurement signal from the signal detection part while it is being notified that distance measurement is carried out to and from the subscriber-side communication devices from the transmission granting part, sends a reset signal indicating that the voltage level is reset to the threshold control part.

公开(公告)号：US20080089686A1

公开(公告)日：2008-04-17

申请号：US11729974

申请日：2007-03-30

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima ,  Norihiro Sakamoto

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04J3/0682

摘要： A station-side communication device connected to subscriber-side communication devices via an optical combining device; sending, to the subscriber-side communication devices, a distance measurement request signal; computing transmission delay times of optical signals from the individual subscriber-side communication devices by receiving distance measurement signals, and including: a threshold control part identifying the level of distance measurement signals; a signal detection part detecting breaks in the distance measurement signals from the threshold control part; a transmission granting part determining the timing at which transmission of optical signals is granted, and a reset timing generation part that, there is notification of detection of a break in the distance measurement signal from the signal detection part while it is being notified that distance measurement is carried out to and from the subscriber-side communication devices from the transmission granting part, sends a reset signal indicating that the voltage level is reset to the threshold control part.

摘要翻译： 经由光合成装置与用户侧通信装置连接的站侧通信装置; 向所述用户侧通信设备发送距离测量请求信号; 通过接收距离测量信号来计算来自各个用户侧通信设备的光信号的传输延迟时间，并且包括：阈值控制部分，识别距离测量信号的电平; 信号检测部检测来自阈值控制部的距离测量信号的中断; 确定光信号的发送的定时的发送准许部分，以及在通知距离测量的情况下，存在来自信号检测部的距离测量信号中断的检测通知的复位定时生成部 向来自发送授权部分的用户侧通信设备执行，将表示电压电平复位的复位信号发送到阈值控制部分。