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：US08254780B2

公开(公告)日：2012-08-28

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： H04B10/00

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，其在接收电路中设置对应于发送时间存储的阈值，以控制光信号的接收。 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：US20110268435A1

公开(公告)日：2011-11-03

申请号：US13144253

申请日：2009-01-13

申请人： Masahiko Mizutani ,  Yusuke Yajima ,  Nobuyuki Yamamoto ,  Yoshihiro Ashi

发明人： Masahiko Mizutani ,  Yusuke Yajima ,  Nobuyuki Yamamoto ,  Yoshihiro Ashi

IPC分类号： H04B10/08

CPC分类号： H04J14/0227 ,  H04L43/0817 ,  H04L43/0852 ,  H04L45/22 ,  H04L45/28 ,  H04Q11/0067 ,  H04Q2011/0081

摘要： Switching process at the occurrence of a path trouble is performed more quickly to reduce the number of packet discards during a traffic transition from a currently used system path to a standby system path within a section to be protected. An OLT (210-W) refers to the DBA information of a PON section and, if receiving no CCM frame at a timing at which the same should be received, then determines that some trouble has occurred on the path (S801) and transmits, to an OAM-compliant NE (200-Z), an application-for-switching frame (1501) to notify the OAM-compliant NE (200-Z) of the abnormal condition. The OAM-compliant NE (200-Z) monitors the occurrence of the trouble within the PON section nearly in real time, starts a switching process (S802) and generates and transmits a standby-system delivery request (321) (S302, S803). An OAM-compliant NE (200-A) switches the communication path to the standby-system passing through an OLT (210-P).

摘要翻译： 在发生路径故障时的切换过程被执行得更快以减少从当前使用的系统路径到要保护的区段内的备用系统路径的业务转换期间的丢弃丢弃数量。 OLT（210-W）是指PON部分的DBA信息，并且如果在接收相同的定时不接收到CCM帧，则确定在路径上发生了一些故障（S801） 到符合OAM的NE（200-Z），用于切换交换帧（1501）的OAM兼容NE（200-Z）通知异常状态。 符合OAM标准的NE（200-Z）几乎实时监控PON部分内的故障发生，开始切换处理（S802），生成并发送备用系统传送请求（321）（S302，S803） 。 符合OAM标准的网元（200-A）将通信路径切换到通过OLT（210-P）的备用系统。

公开(公告)号：US08554075B2

公开(公告)日：2013-10-08

申请号：US13144253

申请日：2009-01-13

申请人： Masahiko Mizutani ,  Yusuke Yajima ,  Nobuyuki Yamamoto ,  Yoshihiro Ashi

发明人： Masahiko Mizutani ,  Yusuke Yajima ,  Nobuyuki Yamamoto ,  Yoshihiro Ashi

IPC分类号： H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0227 ,  H04L43/0817 ,  H04L43/0852 ,  H04L45/22 ,  H04L45/28 ,  H04Q11/0067 ,  H04Q2011/0081

摘要： Switching process at the occurrence of a path trouble is performed more quickly to reduce the number of packet discards during a traffic transition from a currently used system path to a standby system path within a section to be protected. An OLT (210-W) refers to the DBA information of a PON section and, if receiving no CCM frame at a timing at which the same should be received, then determines that some trouble has occurred on the path (S801) and transmits, to an OAM-compliant NE (200-Z), an application-for-switching frame (1501) to notify the OAM-compliant NE (200-Z) of the abnormal condition. The OAM-compliant NE (200-Z) monitors the occurrence of the trouble within the PON section nearly in real time, starts a switching process (S802) and generates and transmits a standby-system delivery request (321) (S302, S803). An OAM-compliant NE (200-A) switches the communication path to the standby-system passing through an OLT (210-P).

摘要翻译： 在发生路径故障时的切换过程被执行得更快以减少从当前使用的系统路径到要保护的区段内的备用系统路径的业务转换期间的丢弃丢弃数量。 OLT（210-W）是指PON部分的DBA信息，并且如果在接收相同的定时不接收到CCM帧，则确定在路径上发生了一些故障（S801） 到符合OAM的NE（200-Z），用于切换交换帧（1501）的OAM兼容NE（200-Z）通知异常状态。 符合OAM标准的NE（200-Z）几乎实时监控PON部分内的故障发生，开始切换处理（S802），生成并发送备用系统传送请求（321）（S302，S803） 。 符合OAM标准的网元（200-A）将通信路径切换到通过OLT（210-P）的备用系统。

公开(公告)号：US20070030937A1

公开(公告)日：2007-02-08

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： H03D3/24

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。

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。

公开(公告)号：US08204168B2

公开(公告)日：2012-06-19

申请号：US12349914

申请日：2009-01-07

申请人： Yusuke Yajima ,  Tohru Kazawa ,  Yoshihiro Ashi

发明人： Yusuke Yajima ,  Tohru Kazawa ,  Yoshihiro Ashi

IPC分类号： H04L7/00 ,  H03D3/24

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。

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：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：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。