公开(公告)号：US07680414B2

公开(公告)日：2010-03-16

申请号：US11806130

申请日：2007-05-30

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima

IPC分类号： H04J14/00

CPC分类号： H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： A Passive Optical Network system implementing a parent station capable of receiving high-speed burst signals transmitted from a plurality of subsidiary stations to a parent station, with excellent bandwidth utilization efficiency in the link from the stations to the parent. The system is provided with a configuration in which, when launched or an addition of a new subsidiary station, the parent stores threshold values appropriate for the received signals on the basis of the strength of the received signal for each subsidiary station, from among a plurality of preset threshold value candidates, and in response to the parent station's sending of a transmission grant with respect to each subsidiary station each time the subsidiary station transmitting optical signals changes, the stored threshold value corresponding to the subsidiary station is set in the receiver circuit.

摘要翻译： 一种被动光网络系统，其实现能够接收从多个子站发送到母站的高速突发信号的母站，具有从站到母线的链路中良好的带宽利用效率。 该系统具有这样的配置，其中当启动或添加新的辅助站时，母机根据每个辅助站的接收信号的强度从多个存储器中存储适合于接收信号的阈值 并且响应于每次发送光信号的子站发送关于每个辅助站的发送授权时，在接收机电路中设置对应于该辅助站的所存储的阈值。

公开(公告)号：US20080187312A1

公开(公告)日：2008-08-07

申请号：US11806130

申请日：2007-05-30

申请人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima

发明人： Tohru Kazawa ,  Masaki Ohira ,  Yusuke Yajima

IPC分类号： H04B10/13

CPC分类号： H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： A Passive Optical Network system implementing a parent station capable of receiving high-speed burst signals transmitted from a plurality of subsidiary stations to a parent station, with excellent bandwidth utilization efficiency in the link from the stations to the parent. The system is provided with a configuration in which, when launched or an addition of a new subsidiary station, the parent stores threshold values appropriate for the received signals on the basis of the strength of the received signal for each subsidiary station, from among a plurality of preset threshold value candidates, and in response to the parent station's sending of a transmission grant with respect to each subsidiary station each time the subsidiary station transmitting optical signals changes, the stored threshold value corresponding to the subsidiary station is set in the receiver circuit.

摘要翻译： 一种被动光网络系统，其实现能够接收从多个子站发送到母站的高速突发信号的母站，具有从站到母线的链路中良好的带宽利用效率。 该系统具有这样的配置，其中当启动或添加新的辅助站时，母机根据每个辅助站的接收信号的强度从多个存储器中存储适合于接收信号的阈值 并且响应于每次发送光信号的子站发送关于每个辅助站的发送授权时，在接收机电路中设置对应于该辅助站的所存储的阈值。

公开(公告)号：US08249455B2

公开(公告)日：2012-08-21

申请号：US13095004

申请日：2011-04-27

申请人： Tohru Kazawa ,  Yusuke Yajima ,  Masaki Oohira

发明人： Tohru Kazawa ,  Yusuke Yajima ,  Masaki Oohira

IPC分类号： H04B10/00

CPC分类号： H04J14/0282 ,  H04J3/0682

摘要： In a WDM-PON system wherein a plurality of ONUs transfer signals by sharing wavelengths, one wavelength dedicated to a ranging procedure is set, and the ranging is performed with only the dedicated wavelength, so as to measure reciprocating delay times. At the other wavelengths, transmission signals from a plurality of ONUs are transferred in time division multiplexing based on the obtained reciprocating delay times. An OLT includes a burst receiver circuit for only the wavelength dedicated to the ranging, and subsequently to the ranging, the OLT adjusts transmission amplitudes and transmission phases for the ONUs, so as to equalize received amplitudes and received phases in the OLT. For this purpose, the OLT includes means for measuring the amplitudes and phases of received signals, as the burst receiver circuit, and it includes a table for managing the received amplitudes and received phases of the respective ONUs.

摘要翻译： 在其中多个ONU通过共享波长传送信号的WDM-PON系统中，设置专用于测距过程的一个波长，并且仅用专用波长执行测距，以便测量往复延迟时间。 在其他波长处，基于所获得的往复延迟时间，来自多个ONU的传输信号以时分多路传输。 OLT包括仅专用于测距的波长的突发接收器电路，随后在测距中，OLT调整ONU的发射幅度和发射相位，以便均衡OLT中的接收幅度和接收相位。 为此，OLT包括用于测量接收信号的幅度和相位的装置作为脉冲串接收器电路，并且其包括用于管理各个ONU的接收幅度和接收相位的表格。

公开(公告)号：US08139950B2

公开(公告)日：2012-03-20

申请号：US12121229

申请日：2008-05-15

申请人： Masao Niibe ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

发明人： Masao Niibe ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

IPC分类号： H04B10/00 ,  H04J14/00 ,  H04J4/00 ,  H04J14/08

CPC分类号： H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

摘要： A passive optical network system (PON) has a plurality of OLTs and ONUs with different transmission rates. OLTs with different transmission rates share information of priority frames and destinations, and determine timing for frame transmission to ONUs so that the signal from each of the OLTs does not collide when multiplied in a splitter. OLTs transmit the data to the ONU as a burst signal to prevent the signals with different rates from colliding. ONU acquires the information of the following burst frames. ONU receives only the signal addressed to the own ONU or with the transmission rate of own ONU, therefore errors in ONUs can be avoided. OLT receives only the signal with the transmission rate of own OLT from ONUs based on the transmission timing from the ONUs shared by the line terminators, errors in OLTs can be avoided.

摘要翻译： 无源光网络系统（PON）具有多个具有不同传输速率的OLT和ONU。 具有不同传输速率的OLT共享优先级帧和目的地的信息，并确定向ONU发送帧的定时，使得来自每个OLT的信号在分离器中相乘时不会发生冲突。 OLT将数据作为突发信号发送到ONU，以防止具有不同速率的信号相互冲突。 ONU获取以下突发帧的信息。 ONU仅接收寻址到自己的ONU的信号或以自己的ONU的传输速率，因此可以避免ONU中的错误。 基于来自线路终端机共享的ONU的传输定时，OLT仅从ONU接收到自身OLT的传输速率的信号，可以避免OLT中的错误。

公开(公告)号：US20100080558A1

公开(公告)日：2010-04-01

申请号：US12388104

申请日：2009-02-18

申请人： Tohru Kazawa ,  Yusuke Yajima ,  Taishi Shinagawa

发明人： Tohru Kazawa ,  Yusuke Yajima ,  Taishi Shinagawa

IPC分类号： H04J14/00

CPC分类号： H04J3/0682 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2213/1301

摘要： The passive optical network includes a master station and slave stations connected via an optical fiber network including an optical splitter and a plurality of optical fibers. The master station includes a bandwidth control unit which decides a volume of a transmission signal to be granted to each slave station in every first period and in accordance with a request from the slave station, and a transmission timing control unit which decides, in one of a plurality of second periods and in accordance with the decided volume of the signal, transmission timing in which the slave station should transmit a signal. When the signal is to be transmitted by division over the plurality of second periods, the bandwidth control unit or the transmission timing control unit is controlled based on a volume of a signal to be attached by division processing, so that the granted signal can be transmitted in the first period.

摘要翻译： 无源光网络包括通过包括光分路器和多个光纤的光纤网络连接的主站和从站。 主站包括：带宽控制单元，其根据来自所述从站的请求，决定在每个第一周期中向每个从站授予的发送信号的音量;以及发送定时控制单元，其中， 多个第二周期，并且根据确定的信号音量，从站应发送信号的发送定时。 当通过多个第二周期的分割来发送信号时，基于要通过分割处理附加的信号的音量来控制带宽控制单元或发送定时控制单元，从而可以发送所允许的信号 在第一时期。

公开(公告)号：US20090310964A1

公开(公告)日：2009-12-17

申请号：US12379107

申请日：2009-02-12

申请人： Toshiki Sugawara ,  Yusuke Yajima ,  Tohru Kazawa

发明人： Toshiki Sugawara ,  Yusuke Yajima ,  Tohru Kazawa

IPC分类号： H04B10/20

CPC分类号： H04B10/85 ,  H04B10/272 ,  H04J3/14

摘要： There is provided an abnormal light cut-off system in which even when a high power light is inputted from an optical fiber connected to a user side apparatus by a malicious user or an accident, a trouble rate is low, the abnormal light is cut off at high sensitivity, and security is high. In a network system in which an optical line terminating apparatus and plural optical network apparatuses are connected together via plural optical connection sections and an optical branching section, the optical branching section includes one optical line terminating apparatus side port and plural optical network apparatus side branch ports, an optical line terminating apparatus side optical fiber connects the optical line terminating apparatus and the one optical line terminating apparatus side port, an optical branching section side optical fiber connects the optical network apparatus side branch port and a light cut-off section, and an optical network apparatus side optical fiber connects the light cut-off section and the optical network apparatus. When an abnormal light is inputted from the optical network apparatus side, it is cut off by the light cut-off section.

摘要翻译： 提供了一种异常的遮光系统，其中即使从恶意用户或事故连接到用户侧设备的光纤输入高功率光，故障率低，异常光被切断 灵敏度高，安全性高。 在光线路终端装置和多个光网络装置经由多个光连接部和光分支部连接的网络系统中，光分支部包括一个光线路终端装置侧端口和多个光网络装置侧分支端口 光线路终端装置侧光纤将光线路终端装置与一根光线路终端装置侧端口连接，光分路部侧光纤将光网络装置侧分支端口与遮光部分连接， 光网络装置侧光纤连接光切断部和光网络装置。 当从光网络装置侧输入异常光时，被遮光部切断。

公开(公告)号：US20090202242A1

公开(公告)日：2009-08-13

申请号：US12121229

申请日：2008-05-15

申请人： Masao NIIBE ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

发明人： Masao NIIBE ,  Tohru Kazawa ,  Yusuke Yajima ,  Takeshi Kiyose ,  Masahiko Mizutani

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0084

摘要： A passive optical network system (PON) has a plurality of OLTs and ONUs with different transmission rates. OLTs with different transmission rates share information of priority frames and destinations, and determine timing for frame transmission to ONUs so that the signal from each of the OLTs does not collide when multiplied in a splitter. OLTs transmit the data to the ONU as a burst signal to prevent the signals with different rates from colliding. ONU acquires the information of the following burst frames. ONU receives only the signal addressed to the own ONU or with the transmission rate of own ONU, therefore errors in ONUs can be avoided. OLT receives only the signal with the transmission rate of own OLT from ONUs based on the transmission timing from the ONUs shared by the line terminators, errors in OLTs can be avoided.

摘要翻译： 无源光网络系统（PON）具有多个具有不同传输速率的OLT和ONU。 具有不同传输速率的OLT共享优先级帧和目的地的信息，并确定向ONU发送帧的定时，使得来自每个OLT的信号在分离器中相乘时不会发生冲突。 OLT将数据作为突发信号发送到ONU，以防止具有不同速率的信号相互冲突。 ONU获取以下突发帧的信息。 ONU仅接收寻址到自己的ONU的信号或以自己的ONU的传输速率，因此可以避免ONU中的错误。 基于来自线路终端机共享的ONU的传输定时，OLT仅从ONU接收到自身OLT的传输速率的信号，可以避免OLT中的错误。

公开(公告)号：US08184976B2

公开(公告)日：2012-05-22

申请号：US12388104

申请日：2009-02-18

申请人： Tohru Kazawa ,  Yusuke Yajima ,  Taishi Shinagawa

发明人： Tohru Kazawa ,  Yusuke Yajima ,  Taishi Shinagawa

IPC分类号： H04J14/00 ,  H04B10/00

CPC分类号： H04J3/0682 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2213/1301

摘要： The passive optical network includes a master station and slave stations connected via an optical fiber network including an optical splitter and a plurality of optical fibers. The master station includes a bandwidth control unit which decides a volume of a transmission signal to be granted to each slave station in every first period and in accordance with a request from the slave station, and a transmission timing control unit which decides, in one of a plurality of second periods and in accordance with the decided volume of the signal, transmission timing in which the slave station should transmit a signal. When the signal is to be transmitted by division over the plurality of second periods, the bandwidth control unit or the transmission timing control unit is controlled based on a volume of a signal to be attached by division processing, so that the granted signal can be transmitted in the first period.

摘要翻译： 无源光网络包括通过包括光分路器和多个光纤的光纤网络连接的主站和从站。 主站包括：带宽控制单元，其根据来自所述从站的请求，决定在每个第一周期中向每个从站授予的发送信号的音量;以及发送定时控制单元，其中， 多个第二周期，并且根据确定的信号音量，从站应发送信号的发送定时。 当通过多个第二周期的分割来发送信号时，基于要通过分割处理附加的信号的音量来控制带宽控制单元或发送定时控制单元，从而可以发送所允许的信号 在第一时期。

公开(公告)号：US08090261B2

公开(公告)日：2012-01-03

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：US07483506B2

公开(公告)日：2009-01-27

申请号：US11299819

申请日：2005-12-13

申请人： Yusuke Yajima ,  Tohru Kazawa ,  Yoshihiro Ashi

发明人： Yusuke Yajima ,  Tohru Kazawa ,  Yoshihiro Ashi

IPC分类号： H04L7/00 ,  H04J3/06

CPC分类号： H04L7/0337 ,  H03L7/0814 ,  H03L7/087 ,  H03L7/091 ,  H04L7/0004 ,  H04L7/046

摘要： A bit synchronization circuit comprising an initial phase determining unit for rapidly determining, during a period of receiving a preamble of burst data, a clock with a phase synchronized with received burst data from among multi-phase clocks having the same frequency as an internal reference clock and a phase tracking unit for modifying the synchronized phase clock responsive to phase variation of received data during a period of receiving a payload of burst data by taking the synchronized phase clock determined by the initial phase determining unit as an initial phase. The bit synchronization circuit retimes burst data with a data retiming clock having a predetermined phase relation with the synchronized phase clock and outputs the burst data in synchronization with the internal reference clock.

摘要翻译： 一种位同步电路，包括初始相位确定单元，用于在从脉冲串数据的前导码接收周期内快速确定具有与内部参考时钟相同频率的多相位时钟中的接收脉冲串数据同步的时钟 以及相位跟踪单元，用于通过将由初始相位确定单元确定的同步相位时钟作为初始相位，在接收到突发数据的有效载荷的周期期间响应于接收数据的相位变化来修正同步相位时钟。 位同步电路使用具有与同步相位时钟具有预定相位关系的数据重新定时时钟重新匹配突发数据，并且与内部参考时钟同步输出脉冲串数据。