公开(公告)号：US20080247550A1

公开(公告)日：2008-10-09

申请号：US11587585

申请日：2004-05-14

申请人： Seiji Kozaki ,  Ken Murakami ,  Hiroyuki Tanaka ,  Yoshifumi Hotta ,  Hideaki Yamanaka

发明人： Seiji Kozaki ,  Ken Murakami ,  Hiroyuki Tanaka ,  Yoshifumi Hotta ,  Hideaki Yamanaka

IPC分类号： H04L9/08

CPC分类号： H04L9/12 ,  H04L9/0891

摘要： In a PON system, clocks of an optical network unit and an optical line terminal are synchronized. An optical network unit generates a new encryption key and transmits it to an optical line terminal. The optical network unit transmits a notification that includes an encryption key changing time to the optical line terminal. Finally, the optical network unit and the optical line terminal change previously held encryption keys to the new encryption key at the encryption key changing time.

摘要翻译： 在PON系统中，光网络单元和光线路终端的时钟同步。 光网络单元生成新的加密密钥并将其发送到光线路终端。 光网络单元向光线路终端发送包含加密密钥更改时间的通知。 最后，光网络单元和光线路终端在加密密钥更改时间将先前保存的加密密钥改变为新的加密密钥。

公开(公告)号：US08615169B2

公开(公告)日：2013-12-24

申请号：US13060947

申请日：2008-08-26

申请人： Kaori Mie ,  Yoshifumi Hotta ,  Seiji Kozaki ,  Hiroaki Mukai

发明人： Kaori Mie ,  Yoshifumi Hotta ,  Seiji Kozaki ,  Hiroaki Mukai

IPC分类号： H04J14/00

CPC分类号： H04L12/44 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/029 ,  H04L12/413

摘要： An optical line terminal performs transmission to optical network units using a light signal having a wavelength different for each of systems, allocates communication time to data, which is transmitted from the optical network units, in a time division manner for each of the systems, selects, for each of the optical network units, a system for performing data transmission, and transmits the data using a wavelength corresponding to the selected system. The optical network unit includes: ith blocking filter that removes a component other than a component in a predetermined wavelength band, which is set to correspond to an ith system, from a received light signal; and ith PON processing unit that applies termination processing to signals and transmitting the data based on an allocation result of the optical line terminal. The PON system includes n optical network units corresponding to i=1 to i=n.

摘要翻译： 光线路终端使用具有针对每个系统的波长不同的光信号对光网络单元进行传输，为每个系统以时分方式分配从光网络单元发送的数据的通信时间，选择 对于每个光网络单元，执行数据传输的系统，并且使用与所选系统相对应的波长来发送数据。 光网络单元包括：阻塞滤波器，从接收到的光信号中去除除了被设置为对应于第i个系统的预定波长带中的分量之外的分量; 以及第一PON处理单元，其基于光线路终端的分配结果向终端处理应用信号并发送数据。 PON系统包括对应于i = 1至i = n的n个光网络单元。

公开(公告)号：US20110158638A1

公开(公告)日：2011-06-30

申请号：US13060947

申请日：2008-08-26

申请人： Kaori Mie ,  Yoshifumi Hotta ,  Seiji Kozaki ,  Hiroaki Mukai

发明人： Kaori Mie ,  Yoshifumi Hotta ,  Seiji Kozaki ,  Hiroaki Mukai

IPC分类号： H04J14/00 ,  H04B10/08

CPC分类号： H04L12/44 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/029 ,  H04L12/413

摘要： An optical line terminal performs transmission to optical network units using a light signal having a wavelength different for each of systems, allocates communication time to data, which is transmitted from the optical network units, in a time division manner for each of the systems, selects, for each of the optical network units, a system for performing data transmission, and transmits the data using a wavelength corresponding to the selected system. The optical network unit includes: ith blocking filter that removes a component other than a component in a predetermined wavelength band, which is set to correspond to an ith system, from a received light signal; and ith PON processing unit that applies termination processing to signals and transmitting the data based on an allocation result of the optical line terminal. The PON system includes n optical network units corresponding to i=1 to i=n.

摘要翻译： 光线路终端使用具有针对每个系统的波长不同的光信号对光网络单元进行传输，为每个系统以时分方式分配从光网络单元发送的数据的通信时间，选择 对于每个光网络单元，执行数据传输的系统，并且使用与所选系统相对应的波长来发送数据。 光网络单元包括：阻塞滤波器，从接收到的光信号中去除除了被设置为对应于第i个系统的预定波长带中的分量之外的分量; 以及第一PON处理单元，其基于光线路终端的分配结果向终端处理应用信号并发送数据。 PON系统包括对应于i = 1至i = n的n个光网络单元。

公开(公告)号：US20130266306A1

公开(公告)日：2013-10-10

申请号：US13976188

申请日：2012-02-06

申请人： Seiji Kozaki ,  Kenichi Nakura ,  Yoshifumi Hotta ,  Jun Mizuguchi

发明人： Seiji Kozaki ,  Kenichi Nakura ,  Yoshifumi Hotta ,  Jun Mizuguchi

IPC分类号： H04L7/00

CPC分类号： H04L7/0075 ,  H04B10/032 ,  H04B10/272 ,  H04J3/0641 ,  H04J3/0655 ,  H04J3/0667 ,  H04Q11/0067 ,  H04Q2011/0081

摘要： A time synchronization method for a communication system configured to perform protection switching, the communication system including a first network in which a master station and a slave station are connected via plural physical lines including a working line and a backup line and a second network connected to the slave station, the method including a time synchronization in which the slave station executes, when not detecting a communication failure of a downlink signal transmitted from the master station, synchronization processing for synchronizing, based on a clock of the slave station and timing information, time information transmitted to the second network with time information included in a time synchronization command and suppresses, when detecting a communication failure or receiving a switching notification from the master station apparatus, a synchronization error due to a difference between the clock of the slave station and the timing information.

摘要翻译： 一种被配置为执行保护切换的通信系统的时间同步方法，所述通信系统包括第一网络，其中主站和从站经由包括工作线路和备用线路的多条物理线路连接，并且第二网络连接到 从站，在不检测从主站发送的下行链路信号的通信故障时，包括从站执行的时间同步的方法，用于基于从站的时钟和定时信息同步的同步处理， 在时间同步命令中包含时间信息发送到第二网络的时间信息，并且当检测到通信故障或从主站装置接收到切换通知时，抑制由于从站的时钟与时钟之间的差异导致的同步误差 时间信息。

公开(公告)号：US09264213B2

公开(公告)日：2016-02-16

申请号：US13976188

申请日：2012-02-06

申请人： Seiji Kozaki ,  Kenichi Nakura ,  Yoshifumi Hotta ,  Jun Mizuguchi

发明人： Seiji Kozaki ,  Kenichi Nakura ,  Yoshifumi Hotta ,  Jun Mizuguchi

IPC分类号： H04L7/00 ,  H04J3/06 ,  H04L12/24 ,  H04Q11/00

CPC分类号： H04L7/0075 ,  H04B10/032 ,  H04B10/272 ,  H04J3/0641 ,  H04J3/0655 ,  H04J3/0667 ,  H04Q11/0067 ,  H04Q2011/0081

摘要： A time synchronization method for a communication system configured to perform protection switching, the communication system including a first network in which a master station and a slave station are connected via plural physical lines including a working line and a backup line and a second network connected to the slave station, the method including a time synchronization in which the slave station executes, when not detecting a communication failure of a downlink signal transmitted from the master station, synchronization processing for synchronizing, based on a clock of the slave station and timing information, time information transmitted to the second network with time information included in a time synchronization command and suppresses, when detecting a communication failure or receiving a switching notification from the master station apparatus, a synchronization error due to a difference between the clock of the slave station and the timing information.

摘要翻译： 一种被配置为执行保护切换的通信系统的时间同步方法，所述通信系统包括第一网络，其中主站和从站经由包括工作线路和备用线路的多条物理线路连接，并且第二网络连接到 从站，在不检测从主站发送的下行链路信号的通信故障时，包括从站执行的时间同步的方法，用于基于从站的时钟和定时信息同步的同步处理， 在时间同步命令中包含时间信息发送到第二网络的时间信息，并且当检测到通信故障或从主站装置接收到切换通知时，抑制由于从站的时钟与时钟之间的差异导致的同步误差 时间信息。

公开(公告)号：US20100232798A1

公开(公告)日：2010-09-16

申请号：US12740363

申请日：2007-11-28

申请人： Seiji Kozaki ,  Yoshifumi Hotta ,  Akira Takahashi

发明人： Seiji Kozaki ,  Yoshifumi Hotta ,  Akira Takahashi

IPC分类号： H04J3/06 ,  H04J14/08

CPC分类号： H04L7/0338 ,  H04B10/272 ,  H04Q11/0067

摘要： A bit identification circuit includes a multiphase clock generating unit that outputs multiphase clocks, a phase selecting unit that samples the input data signals using the multiphase clocks and selects a sampled result out of a plurality of sampled results, a correcting unit that thins a part of bits of the sampled result selected by the phase selecting unit based on the difference in bit rates, and a rate selecting unit that selects based on a selection signal for identifying the data signals and outputs one of an output of the correcting unit and an output of the phase selecting unit.

摘要翻译： 位识别电路包括输出多相时钟的多相时钟发生单元，使用多相时钟对输入数据信号进行采样并从多个采样结果中选择采样结果的相位选择单元， 基于比特率的差异由相位选择单元选择的采样结果的比特;以及速率选择单元，其基于用于识别数据信号的选择信号进行选择，并输出校正单元的输出和输出 相位选择单元。

公开(公告)号：US08719674B2

公开(公告)日：2014-05-06

申请号：US11817907

申请日：2006-06-26

申请人： Koji Takahashi ,  Seiji Kozaki ,  Hideaki Yamanaka

发明人： Koji Takahashi ,  Seiji Kozaki ,  Hideaki Yamanaka

IPC分类号： H03M13/00

CPC分类号： H04L1/0047 ,  H04L7/048

摘要： A communication apparatus realizes an FEC function. In the communication apparatus, a T_FEC-pattern comparing unit calculates a code distance between a pattern of an input FEC frame falling in a certain detection window and the pre-defined T_FEC pattern for each of the detection windows one after another. Moreover, a code-distance comparing unit compares the code distances with each other to detect a code for boundary identification T_FEC between an IEEE802.3 frame and a FEC parity. Finally, a boundary-signal generating unit generates, based on the detected code for boundary identification T_FEC, a T_FEC boundary signal that indicates a detection position of the T_FEC in the input FEC frame.

摘要翻译： 通信装置实现FEC功能。 在通信装置中，T_FEC模式比较单元一个接一个地计算出落在特定检测窗口中的输入FEC帧的模式与每个检测窗口的预定T_FEC模式之间的码距离。 此外，码距比较单元将码距离相互比较，以检测IEEE802.3帧和FEC奇偶校验之间的边界识别码T_FEC的码。 最后，边界信号生成单元基于检测出的边界识别码T_FEC生成表示输入FEC帧中的T_FEC的检测位置的T_FEC边界信号。

公开(公告)号：US20090254793A1

公开(公告)日：2009-10-08

申请号：US11817907

申请日：2006-06-26

申请人： Koji Takahashi ,  Seiji Kozaki ,  Hideaki Yamanaka

发明人： Koji Takahashi ,  Seiji Kozaki ,  Hideaki Yamanaka

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/0047 ,  H04L7/048

摘要： A communication apparatus realizes an FEC function. In the communication apparatus, a T_FEC-pattern comparing unit calculates a code distance between a pattern of an input FEC frame falling in a certain detection window and the pre-defined T_FEC pattern for each of the detection windows one after another. Moreover, a code-distance comparing unit compares the code distances with each other to detect a code for boundary identification T_FEC between an IEEE802.3 frame and a FEC parity. Finally, a boundary-signal generating unit generates, based on the detected code for boundary identification T_FEC, a T_FEC boundary signal that indicates a detection position of the T_FEC in the input FEC frame.

摘要翻译： 通信装置实现FEC功能。 在通信装置中，T_FEC模式比较单元一个接一个地计算出落在特定检测窗口中的输入FEC帧的模式与每个检测窗口的预定T_FEC模式之间的码距离。 此外，码距比较单元将码距离相互比较，以检测IEEE802.3帧和FEC奇偶校验之间的边界识别码T_FEC的码。 最后，边界信号生成单元基于检测出的边界识别码T_FEC生成表示输入FEC帧中的T_FEC的检测位置的T_FEC边界信号。

公开(公告)号：US07443874B2

公开(公告)日：2008-10-28

申请号：US10147885

申请日：2002-05-20

申请人： Yoshihiro Asashiba ,  Toshikazu Yoshida ,  Hiroaki Mukai ,  Seiji Kozaki

发明人： Yoshihiro Asashiba ,  Toshikazu Yoshida ,  Hiroaki Mukai ,  Seiji Kozaki

IPC分类号： H04B7/212

CPC分类号： H04J3/14 ,  H04J3/1694 ,  H04Q11/0062 ,  H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0086

摘要： According to an aspect of this invention, dynamic bandwidth assignment (DBA) can be performed without interrupting communication of a regular cell and interfering with communication between child stations. In a passive optical network including a parent station and a plurality of child stations, a maintenance signal for a mini slot signal is provided. Each of the child stations sends a corresponding maintenance signal if necessary, and the parent station controls state transition by using the maintenance signal concerning on the mini slot signal for each of the child stations. By controlling the state transition, the dynamic bandwidth assignment can be performed.

摘要翻译： 根据本发明的一个方面，可以在不中断正常小区的通信并干扰儿童站之间的通信的情况下执行动态带宽分配（DBA）。 在包括母站和多个子站的无源光网络中，提供用于小时隙信号的维护信号。 如果需要，每个子站发送相应的维护信号，并且母站通过使用关于每个子站的迷你时隙信号的维护信号来控制状态转换。 通过控制状态转换，可以执行动态带宽分配。

公开(公告)号：US20130045005A1

公开(公告)日：2013-02-21

申请号：US13695554

申请日：2010-12-08

申请人： Kenichi Nakura ,  Hiroaki Mukai ,  Seiji Kozaki ,  Daisuke Ito ,  Masaki Tanaka

发明人： Kenichi Nakura ,  Hiroaki Mukai ,  Seiji Kozaki ,  Daisuke Ito ,  Masaki Tanaka

IPC分类号： H04B10/08

CPC分类号： H04Q11/0067 ,  H04B10/272 ,  H04J3/0694 ,  H04J3/14 ,  H04Q2011/0079 ,  H04Q2011/0083 ,  H04Q2011/0088

摘要： The control device includes a power-saving control unit that intermittently repeats, based on a power saving permission signal transmitted from the master station apparatus, power saving control in which the slave station stops or reduces power supply to a transmitter or a receiver for a predetermined pause duration while maintaining a communication link and a monitoring unit that monitors out of synchronization by comparing a synchronization signal received from the OLT and a time of the ONU. The control device shifts from a registered state to a deregistered state when the monitoring unit detects the out of synchronization. On the other hand, after the pause duration of the power saving control, the control device suppresses the shift to the deregistered state due to the detection of the out of synchronization.

摘要翻译： 控制装置包括省电控制单元，其基于从主站装置发送的省电许可信号间歇地重复执行省电控制，其中从站停止或减少向发射机或接收机的电力供应预定的 通过比较从OLT接收的同步信号和ONU的时间来监视通信链路的暂停持续时间和监视器不同步的监视单元。 当监视单元检测到不同步时，控制装置从注册状态转移到注销状态。 另一方面，在省电控制的暂停持续时间之后，控制装置由于不同步的检测而抑制向取消登记状态的转移。