公开(公告)号：US06271949B1

公开(公告)日：2001-08-07

申请号：US08991049

申请日：1997-12-16

申请人： Yoshihiko Suemura ,  Naoya Henmi

发明人： Yoshihiko Suemura ,  Naoya Henmi

IPC分类号： H04J1402

CPC分类号： H04Q11/0005 ,  H04J14/02 ,  H04Q2011/0015 ,  H04Q2011/0022 ,  H04Q2011/0032 ,  H04Q2011/0075 ,  H04Q2011/0086

摘要： An optical wavelength selector is provided that selects WDM channels from WDM optical signal and outputs each WDM channels from a plurality of ports. WDM optical signal in which m×n WDM channels are multiplexed is divided into n WDM channel groups and outputted by means of one wavelength-division demultiplexer. One WDM channel group is selected from the n WDM channel groups by means of n optical gate switches. The selected WDM optical signal is then separated into m WDM channels by wavelength and outputted by means of an optical wavelength router. As a result, m WDM channels of a specific WDM channel group can be received by m optical receivers.

摘要翻译： 提供一种光波长选择器，其从WDM光信号中选择WDM信道，并从多个端口输出每个WDM信道。 其中m×n个WDM信道被多路复用的WDM光信号被分成n个WDM信道组，并通过一个波分解多路复用器输出。 通过n个光栅开关从n个WDM信道组中选择一个WDM信道组。 所选择的WDM光信号经波长分离为m个WDM信道，并通过光波长路由器输出。 结果，m个光接收机可以接收特定WDM信道组的m个WDM信道。

公开(公告)号：US5400167A

公开(公告)日：1995-03-21

申请号：US222581

申请日：1994-04-04

申请人： Yoshihiko Suemura

发明人： Yoshihiko Suemura

IPC分类号： H04B10/293 ,  H04B10/07 ,  H04B10/516 ,  H04B10/564 ,  H04B10/572 ,  H04B10/61 ,  H04B9/00 ,  H04B10/06 ,  H04J14/00

CPC分类号： H04B10/60 ,  H04B10/64

摘要： An automatic frequency control system, for an optical coherent communication system, in which the frequency of local oscillation light 5 from a coherent light communication receiver 100 is swept to pull the intermediate frequency to a stable AFC point. The AFC is caused to operate with an intermediate frequency in the AFC operation range, and interrupted. Subsequently while sweeping the frequency of local oscillation light 5 in a certain direction in a predetermined range, the output voltage of frequency discriminator 9 is monitored. Once the change of the output voltage of frequency discriminator 9 due to the sweep exceeds the predetermined threshold value, the AFC resumes for pulling to a stable point.

摘要翻译： 一种用于光学相干通信系统的自动频率控制系统，其中来自相干光通信接收机100的本地振荡光5的频率被扫描以将中间频率拉到稳定的AFC点。 使AFC在AFC工作范围内以中频运行，并中断。 随后，在预定范围内以某个方向扫描本地振荡光5的频率，监视鉴频器9的输出电压。 一旦由于扫描而导致的鉴频器9的输出电压的变化超过预定的阈值，则AFC恢复以拉到稳定点。

公开(公告)号：US07471625B2

公开(公告)日：2008-12-30

申请号：US10323856

申请日：2002-12-20

申请人： Yoshihiko Suemura

发明人： Yoshihiko Suemura

IPC分类号： G01R31/08 ,  H04L12/28

CPC分类号： H04L45/28 ,  H04J2203/0053 ,  H04J2203/006 ,  H04L12/437 ,  H04L45/02 ,  H04L45/22 ,  H04L45/50 ,  H04L45/62

摘要： A source node of a network transmits a path setup message for requesting a traffic path to a destination node. First and second nodes, located between the source and destination nodes, establishes first and second parallel transport paths on a first fault recovery layer between them. The first node further includes a database for storing identities of the first and second paths as a single virtual link as viewed from the source node. The first node responds to the path setup message for accommodating the traffic path on a second fault recovery layer through the first transport path. Each node accommodates the traffic path through the second transport path when the first transport path fails. The first node advertises recovery type of the virtual link as equal to the recovery type of the first and second transport paths, and/or equal to most unreliable recovery type of its component links.

摘要翻译： 网络的源节点发送用于请求到目的地节点的业务路径的路径建立消息。 位于源节点和目的节点之间的第一和第二节点在它们之间的第一故障恢复层上建立第一和第二并行传输路径。 第一节点还包括用于将第一和第二路径的标识作为从源节点查看的单个虚拟链路的数据库。 第一节点通过第一传输路径响应路径建立消息以适应第二故障恢复层上的业务路径。 当第一传输路径发生故障时，每个节点容纳通过第二传输路径的业务路径。 第一节点将虚拟链路的恢复类型通告为等于第一和第二传输路径的恢复类型，和/或等于其组件链路的最不可靠的恢复类型。

公开(公告)号：US07372806B2

公开(公告)日：2008-05-13

申请号：US10283241

申请日：2002-10-30

申请人： Yoshihiko Suemura

发明人： Yoshihiko Suemura

IPC分类号： G01R31/08 ,  H04L12/28

CPC分类号： H04J14/0295 ,  H04J14/0227 ,  H04J14/0245 ,  H04J14/0249 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0286 ,  H04J14/0294 ,  H04J2203/0053 ,  H04J2203/006 ,  H04L12/437 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L45/62

摘要： In a communications network where first and second nodes are interconnected by communication links, a source node transmits a path setup message for requesting a traffic path to a destination node. Each of the first and second nodes includes routing control means for establishing first and second transport paths on a first fault recovery layer between the first and second nodes. The first node further includes a database for storing identities of the first and second paths as a single virtual link as viewed from the source node. The first node responds to the path setup message from the source node for establishing the traffic path on a second fault recovery layer through the first transport path. The first and second nodes accommodate the traffic path through the second transport path when the first transport path is not working properly.

摘要翻译： 在第一和第二节点通过通信链路互连的通信网络中，源节点发送用于请求到目的地节点的业务路径的路径建立消息。 第一和第二节点中的每一个包括用于在第一和第二节点之间的第一故障恢复层上建立第一和第二传输路径的路由控制装置。 第一节点还包括用于将第一和第二路径的标识作为从源节点查看的单个虚拟链路的数据库。 第一节点响应来自源节点的路径建立消息，用于通过第一传输路径在第二故障恢复层上建立业务路径。 当第一传输路径不能正常工作时，第一和第二节点适应通过第二传送路径的交通路径。

公开(公告)号：US07355979B2

公开(公告)日：2008-04-08

申请号：US10211332

申请日：2002-08-05

申请人： Itaru Nishioka ,  Yoshihiko Suemura

发明人： Itaru Nishioka ,  Yoshihiko Suemura

IPC分类号： H04L12/26 ,  H04L12/28

CPC分类号： H04L45/04 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0039 ,  H04Q2011/0075 ,  H04Q2011/0086 ,  H04Q2011/0088

摘要： A hierarchized path setting system in a communication network efficiently contains lower order paths in higher order path. The communication network has a plurality of nodes capable to perform switching process and demultiplexing process not only for lower order paths in a predetermined hierarchical level among hierarchized paths but also for higher order paths in a hierarchical level higher than the predetermined hierarchical level, and a plurality of links connecting these nodes. The system is responsive to a new path setting demand for setting the lower order path, for setting the lower order path in the higher order path when a single higher order path is set from a predetermined transmiter node group, in which a transmiter node of the lower order path belongs, to a predetermined receiver node group including a receiver node.

摘要翻译： 通信网络中的层次化路径设置系统有效地包含较高阶路径中的较低阶路径。 通信网络具有能够对层次化路径中的预定层次中的低阶路径进行切换处理和解复用处理的多个节点，而且对于高于预定层级的层次级别的高阶路径， 连接这些节点的链接。 该系统响应于设置低阶路径的新路径设置需求，用于当从预定的发送器节点组设置单个更高阶路径时，设置较高阶路径中的较低阶路径，其中， 低阶路径属于包括接收机节点的预定接收机节点组。

公开(公告)号：US06760346B1

公开(公告)日：2004-07-06

申请号：US09478405

申请日：2000-01-06

申请人： Yoshihiko Suemura ,  Soichiro Araki ,  Yoshiharu Maeno ,  Akio Tajima ,  Seigo Takahashi

发明人： Yoshihiko Suemura ,  Soichiro Araki ,  Yoshiharu Maeno ,  Akio Tajima ,  Seigo Takahashi

IPC分类号： H04J306

CPC分类号： H04L49/405 ,  H04L49/101 ,  H04L49/254 ,  H04L49/30 ,  H04L49/3072 ,  H04L49/3081 ,  H04L49/40 ,  H04L2012/5674 ,  H04Q11/0005 ,  H04Q2011/0045

摘要： A packet switching network which allows the duration of guard time of each packet to be reduced to a minimum and the transmission efficiency of the network to be increased is disclosed. The sending nodes send the packet switch packets each having a guard time added thereto. The receiving nodes receive the packets from the packet switch. Each of the receiving nodes includes a switch timing detector for detecting switch timing of the packet switch based on a serial signal received from the packet switch, and a timing holder for holding the switch timing.

摘要翻译： 公开了一种分组交换网络，其允许将每个分组的保护时间的持续时间减少到最小，并且增加网络的传输效率。 发送节点发送每个具有保护时间的数据包交换包。 接收节点从分组交换机接收分组。 每个接收节点包括用于基于从分组交换机接收的串行信号检测分组交换机的切换定时的开关定时检测器和用于保持切换定时的定时保持器。

公开(公告)号：US06441935B1

公开(公告)日：2002-08-27

申请号：US09210277

申请日：1998-12-11

申请人： Soichiro Araki ,  Yoshihiko Suemura ,  Akio Tajima ,  Seigo Takahashi ,  Yoshiharu Maeno ,  Naoya Henmi

发明人： Soichiro Araki ,  Yoshihiko Suemura ,  Akio Tajima ,  Seigo Takahashi ,  Yoshiharu Maeno ,  Naoya Henmi

IPC分类号： H04J1408

CPC分类号： H04Q11/0001 ,  H04L49/25 ,  H04L49/30 ,  H04L49/50 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0045 ,  H04Q2011/005

摘要： An optical packet exchange apparatus and an optical switch in which search for a connection pattern between an input unit devoid of a packet to be transmitted and an output unit devoid of a packet to be received is reduced to enable fast switch control even in cases wherein the number of channels of the exchange apparatus is increased or network speed is higher. A plurality of input units, a plurality of output units and an optical switch are provided. Each input unit includes an input buffer unit, a parallel/serial conversion unit, an electrical/optical conversion unit, and a dummy packet insertion unit for sending a dummy packet if there is no packet to be transmitted. Each output unit includes an exchange counterpart contention resolution unit for controlling the exchange counterpart, an optical/electrical conversion unit, a serial/parallel conversion unit, and a packet eliminating unit. The exchange counterpart contention resolution unit controls the packet eliminating unit to eliminate a dummy packet.

公开(公告)号：US06243178B1

公开(公告)日：2001-06-05

申请号：US09003759

申请日：1998-01-07

申请人： Yoshihiko Suemura ,  Yoshiharu Maeno

发明人： Yoshihiko Suemura ,  Yoshiharu Maeno

IPC分类号： H04J1402

CPC分类号： H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0011 ,  H04Q2011/0013 ,  H04Q2011/0015 ,  H04Q2011/0022 ,  H04Q2011/0032 ,  H04Q2011/0052 ,  H04Q2011/0075

摘要： Including optical transmitters for producing optical signals on different wavelengths, an optical network comprises an optical crossbar exchange for exchanging the optical signals into an exchanged signal, demultiplexers for demultiplexing the exchanged signals into receiver input signals, optical receivers for converting the receiver input signals into electric output signals, and memory units for storing the output signals as their contents and producing at least one of the contents as a reception signal upon request. It is possible to make such an optical network deal with multiplexed optical signals as the above-mentioned optical signals particularly when supplied with multiplexed electric transmission signals to multiplexed optical signal transmitters.

摘要翻译： 包括用于产生不同波长的光信号的光发射机，光网络包括用于将光信号交换为交换信号的光交叉交换机，用于将交换的信号解复用为接收机输入信号的解复用器，用于将接收机输入信号转换成电 输出信号和存储单元，用于存储输出信号作为其内容，并根据请求产生至少一个内容作为接收信号。 可以使这样的光网络作为上述光信号处理多路复用的光信号，特别是当向多路复用的光信号发射机提供复用的电传输信号时。

公开(公告)号：US5812290A

公开(公告)日：1998-09-22

申请号：US764484

申请日：1996-12-12

申请人： Yoshiharu Maeno ,  Yoshihiko Suemura ,  Naoya Henmi

发明人： Yoshiharu Maeno ,  Yoshihiko Suemura ,  Naoya Henmi

IPC分类号： H04B10/27 ,  H04B10/077 ,  H04B10/29 ,  H04Q11/00 ,  H04B10/12 ,  H04B10/24

CPC分类号： H04Q11/0062 ,  H04Q2011/0039 ,  H04Q2011/0043 ,  H04Q2011/0047 ,  H04Q2011/0081 ,  H04Q2011/0083

摘要： The present invention provides means by which a switch controller that manages lines directly notifies receivers of ineffectiveness of received data upon line disconnection instead of any transmitter indirectly notifying receivers; and according to the invention, an optical transmitter is provided within the optical switching unit, and a switch controller controls the optical transmitter within the optical switching unit and an optical switch having at its input ports one or more dummy ports capable of multicast-transmission. According to this control, upon line disconnection, receivers are connected to the optical transmitter within the optical switching unit that transmits control code in real time, thereby preventing receivers from receiving ineffective data and obviating superfluous signal lines and communication processes between the switch controller and transmitters.

摘要翻译： 本发明提供了一种管理线路的开关控制器直接通知接收机线路断开时接收数据无效而不是任何发射机间接通知接收机的装置; 并且根据本发明，在光学开关单元内提供光发射器，并且开关控制器控制光开关单元内的光发射机，以及在其输入端口具有能够进行组播传输的一个或多个虚拟端口的光开关。 根据该控制，在线路断开时，接收机连接到实际发送控制码的光交换单元内的光发射机，从而防止接收机收到无效数据，消除交换控制器与发射机之间的多余信号线和通信过程 。

公开(公告)号：US20090116392A1

公开(公告)日：2009-05-07

申请号：US11984465

申请日：2007-11-19

申请人： Itaru Nishioka ,  Yoshihiko Suemura

发明人： Itaru Nishioka ,  Yoshihiko Suemura

IPC分类号： H04L12/56

CPC分类号： H04L45/04 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0039 ,  H04Q2011/0075 ,  H04Q2011/0086 ,  H04Q2011/0088

摘要： A hierarchized path setting system in a communication network efficiently contains lower order paths in higher order path. The communication network has a plurality of nodes capable to perform switching process and demultiplexing process not only for lower order paths in a predetermined hierarchical level among hierarchized paths but also for higher order paths in a hierarchical level higher than the predetermined hierarchical level, and a plurality of links connecting these nodes. The system is responsive to a new path setting demand for setting the lower order path, for setting the lower order path in the higher order path when a single higher order path is set from a predetermined transmitter node group, in which a transmitter node of the lower order path belongs, to a predetermined receiver node group including a receiver node.

摘要翻译： 通信网络中的层次化路径设置系统有效地包含较高阶路径中的较低阶路径。 通信网络具有能够对层次化路径中的预定层次中的低阶路径进行切换处理和解复用处理的多个节点，而且对于高于预定层级的层次级别的高阶路径， 连接这些节点的链接。 所述系统响应于设置低阶路径的新路径设置需求，用于当从预定的发射机节点组设置单个较高阶路径时，设置较高阶路径中的较低阶路径，其中， 低阶路径属于包括接收机节点的预定接收机节点组。