公开(公告)号：US4965858A

公开(公告)日：1990-10-23

申请号：US310628

申请日：1989-02-14

申请人： Takao Naito ,  Terumi Chikama ,  Shigeki Watanabe ,  Tetsuya Kiyonaga ,  Yoshihito Onoda ,  Hideo Kuwahara ,  Hiroshi Onaka ,  Hideyuki Miyata

发明人： Takao Naito ,  Terumi Chikama ,  Shigeki Watanabe ,  Tetsuya Kiyonaga ,  Yoshihito Onoda ,  Hideo Kuwahara ,  Hiroshi Onaka ,  Hideyuki Miyata

IPC分类号： G02F2/00 ,  H04B10/25 ,  H04B10/516 ,  H04B10/564 ,  H04B10/61

CPC分类号： H04B10/61 ,  H04B10/614 ,  H04B10/64

摘要： A polarized wave diversity optical receiver for coherent optical communication including: an optical local oscillating circuit (7) for oscillating local oscillating light; a mixing circuit (8) for mixing signal light and the local oscillating light to obtain two polarized components; a detecting circuit (9) for detecting the polarized component to output intermediate frequency signals (e.sub.S and e.sub.P); and a frequency control circuit (11) for controlling, in accordance with the intermediate frequency signals (e.sub.S and e.sub.P), the oscillating frequency of the optical local oscillating circuit (7). To ensure that the intermediate frequency does not disappear, the frequency control circuit (11) outputs a combined signal of a sum and a difference of the intermediate frequency signals (e.sub.S and e.sub.P).

公开(公告)号：US5471336A

公开(公告)日：1995-11-28

申请号：US928101

申请日：1992-08-11

申请人： Hiroshi Onaka ,  Hideyuki Miyata ,  Takao Naito

发明人： Hiroshi Onaka ,  Hideyuki Miyata ,  Takao Naito

IPC分类号： H04B10/516 ,  H04B10/07 ,  H04B10/61 ,  H04B10/64 ,  H04N5/50

CPC分类号： H04B10/61 ,  H04B10/64

摘要： A cold start control system and method for use in a coherent lightwave communications system, in which received signal light is mixed with local light to obtain an IF signal. In the cold start control, the frequency of the local light and/or the frequency of the signal light is swept in the state of the system capable of detecting the IF signal and discrimination between the real/image states and relative correction are made, and then, an AFC operation is started.

摘要翻译： 一种在相干光波通信系统中使用的冷启动控制系统和方法，其中接收的信号光与本地光混合以获得IF信号。 在冷启动控制中，在能够检测IF信号的系统的状态下，本地光的频率和/或信号光的频率被扫描，并且进行实/图像状态之间的鉴别和相对校正，以及 那么AFC操作就开始了。

公开(公告)号：US5568305A

公开(公告)日：1996-10-22

申请号：US462565

申请日：1995-06-05

申请人： Takao Naito ,  Terumi Chikama ,  Hiroshi Onaka

发明人： Takao Naito ,  Terumi Chikama ,  Hiroshi Onaka

IPC分类号： H03D3/06 ,  H03D3/22 ,  H03D9/04 ,  H04B10/06

CPC分类号： H04B10/60 ,  H03D3/22 ,  H04B10/64 ,  H03D9/04

摘要： A heterodyne receiver including a frequency discriminator adapted such that a signal to be subjected to frequency discrimination is divided into two signals and mixed together after one of the divided signals has been given a delay time, and additionally provided with a filter, of which a cutoff frequency is determined according to the delay time, disposed in the front stage. This results in both improvement of accuracy in frequency identification and expansion of the capture range.

摘要翻译： 一种外差接收机，包括频率鉴别器，其适于使得要被频率鉴别的信号被划分为两个信号，并且在一个分频信号被给予延迟时间之后混合在一起，并且另外设置有滤波器，其中截止 频率根据延迟时间确定，处于前置阶段。 这样可以提高频率识别的准确性和捕获范围的扩大。

公开(公告)号：US5050176A

公开(公告)日：1991-09-17

申请号：US540284

申请日：1990-06-19

申请人： Takao Naito ,  Terumi Chikama ,  Shigeki Watanabe ,  Tetsuya Kiyonaga ,  Hiroshi Onaka ,  Yoshihito Onoda

发明人： Takao Naito ,  Terumi Chikama ,  Shigeki Watanabe ,  Tetsuya Kiyonaga ,  Hiroshi Onaka ,  Yoshihito Onoda

IPC分类号： H01S3/10 ,  H04B10/516 ,  H04B10/556 ,  H04B10/61 ,  H04L27/20 ,  H04L27/22 ,  H04L27/227 ,  H04L27/233

CPC分类号： H04L27/2331 ,  H04B10/50 ,  H04B10/504 ,  H04B10/5561 ,  H04B10/60 ,  H04B10/64 ,  H04L27/2096 ,  H04L27/223 ,  H04L27/2276

摘要： A direct modulation PSK system and method, in a coherent optical fiber transmission system, in which an injection current supplied to a laser diode is adapted to be directly varied is disclosed. In this system or method, a modulating current pulse is superposed on a bias current for the laser diode so that a specified phase condition may be satisfied. Thereby, a differential coding circuit and an external modulator being indispensable for a DPSK system become unnecessary and, in addition, the system becomes less susceptible to the influence of wavelength dispersion than the DPSK system and able to reproduce the carrier.

公开(公告)号：US5841557A

公开(公告)日：1998-11-24

申请号：US734605

申请日：1996-10-22

申请人： Kazue Otsuka ,  Hiroshi Onaka ,  Takafumi Terahara ,  Takao Naito

发明人： Kazue Otsuka ,  Hiroshi Onaka ,  Takafumi Terahara ,  Takao Naito

IPC分类号： H04J14/00 ,  G02B6/34 ,  H04B10/03 ,  H04B10/032 ,  H04B10/2537 ,  H04B10/2557 ,  H04B10/2563 ,  H04J14/02 ,  H04J14/04 ,  H04J14/06

CPC分类号： H04J14/02 ,  H04B10/2557 ,  H04B10/2563 ,  H04B10/532 ,  G02B6/2786 ,  H04J14/06

摘要： A method and apparatus for scrambling the polarization of signal lights combined into a wavelength division multiplexed signal light, to suppress non-linear optical effect and thereby improve transmission quality. For example, each signal light has a different polarization before being combined into a wavelength division multiplexed signal light. The polarization of the wavelength division multiplexed signal light can then be scrambled. Alternatively, the polarization of each signal light can be scrambled at a different scrambling frequency before being combined into the wavelength division multiplexed signal light.

摘要翻译： 一种将信号光的偏振加扰成波分复用信号光的方法和装置，以抑制非线性光学效应，从而提高传输质​​量。 例如，每个信号光在被组合成波分复用信号光之前具有不同的偏振。 波分复用信号光的偏振可以被加扰。 或者，每个信号光的偏振可以在被组合成波分复用信号光之前以不同的加扰频率被加扰。

公开(公告)号：US20070070919A1

公开(公告)日：2007-03-29

申请号：US11352868

申请日：2006-02-13

申请人： Toshiki Tanaka ,  Hideyuki Miyata ,  Kouichirou Amemiya ,  Tsunehisa Doi ,  Takao Naito

发明人： Toshiki Tanaka ,  Hideyuki Miyata ,  Kouichirou Amemiya ,  Tsunehisa Doi ,  Takao Naito

IPC分类号： G06F15/177 ,  G06F15/173 ,  H04J1/16 ,  H04L12/28

CPC分类号： H04L43/00 ,  H04L41/0803 ,  H04L41/12 ,  H04L43/16 ,  H04L43/18

摘要： In a network, a controller controls a physical-interconnection selection switch and middle switches so as to dynamically change a network topology according to the state of the network. A traffic analyzer detects how the traffic in the network changes. If there is a change in traffic, the controller controls the physical-interconnection selection switch and the middle switches so as to change the network topology to one suitable for the changed traffic.

摘要翻译： 在网络中，控制器控制物理互连选择交换机和中间交换机，以便根据网络的状态动态地改变网络拓扑。 流量分析器检测网络中的流量如何变化。 如果流量发生变化，则控制器控制物理互连选择开关和中间交换机，以便将网络拓扑改变为适合于改变流量的网络拓扑。

公开(公告)号：US20060171712A1

公开(公告)日：2006-08-03

申请号：US11145918

申请日：2005-06-07

申请人： Toshiki Tanaka ,  Yasuhiko Aoki ,  Hideyuki Miyata ,  Takao Naito ,  Kouichiro Amemiya

发明人： Toshiki Tanaka ,  Yasuhiko Aoki ,  Hideyuki Miyata ,  Takao Naito ,  Kouichiro Amemiya

IPC分类号： H04J14/00

CPC分类号： H04Q11/0062 ,  H04Q2011/009

摘要： The present invention provides an information processing system, comprising a plurality of calculation nodes with an optical transmitter, which individually outputs a plurality of optical signals each having a different wavelength, and an optical receiver, which individually receives a plurality of optical signals each having a different wavelength, an optical transmission path connecting a plurality of the calculation nodes to each other, and optical pathway switching unit, lying in the optical transmission path, for transmitting the optical signal to the specific calculation node in accordance with a wavelength of the optical signal output from one of the calculation nodes.

摘要翻译： 本发明提供了一种信息处理系统，包括多个具有单独输出多个具有不同波长的光信号的光发射机的计算节点，以及光接收机，其分别接收多个光信号，每个光信号具有 不同的波长，连接多个计算节点的光传输路径和位于光传输路径中的光路径切换单元，用于根据光信号的波长将光信号发送到特定的计算节点 从其中一个计算节点输出。

公开(公告)号：US07853147B2

公开(公告)日：2010-12-14

申请号：US11145918

申请日：2005-06-07

申请人： Toshiki Tanaka ,  Yasuhiko Aoki ,  Hideyuki Miyata ,  Takao Naito ,  Kouichiro Amemiya

发明人： Toshiki Tanaka ,  Yasuhiko Aoki ,  Hideyuki Miyata ,  Takao Naito ,  Kouichiro Amemiya

IPC分类号： H04J14/02 ,  H04J14/00 ,  H04B10/20

CPC分类号： H04Q11/0062 ,  H04Q2011/009

摘要： The present invention provides an information processing system, comprising a plurality of calculation nodes with an optical transmitter, which individually outputs a plurality of optical signals each having a different wavelength, and an optical receiver, which individually receives a plurality of optical signals each having a different wavelength, an optical transmission path connecting a plurality of the calculation nodes to each other, and optical pathway switching unit, lying in the optical transmission path, for transmitting the optical signal to the specific calculation node in accordance with a wavelength of the optical signal output from one of the calculation nodes.

摘要翻译： 本发明提供了一种信息处理系统，包括多个具有单独输出多个具有不同波长的光信号的光发送器的计算节点，以及光接收器，其分别接收多个光信号，每个光信号具有 不同的波长，连接多个计算节点的光传输路径和位于光传输路径中的光路径切换单元，用于根据光信号的波长将光信号发送到特定的计算节点 从其中一个计算节点输出。

公开(公告)号：US08831012B2

公开(公告)日：2014-09-09

申请号：US12574972

申请日：2009-10-07

申请人： Min He ,  Kevin Zhu ,  Srinivas Vobilisetti ,  Takao Naito ,  Paparao Palacharla ,  Xi Wang ,  Qiong Zhang

发明人： Min He ,  Kevin Zhu ,  Srinivas Vobilisetti ,  Takao Naito ,  Paparao Palacharla ,  Xi Wang ,  Qiong Zhang

IPC分类号： H04L12/28 ,  H04L12/46 ,  H04L12/701 ,  H04L12/721 ,  H04L12/735 ,  H04L12/707 ,  H04Q3/66

CPC分类号： H04L12/462 ,  H04L45/00 ,  H04L45/12 ,  H04L45/128 ,  H04L45/22 ,  H04Q3/66 ,  H04Q2213/13141 ,  H04Q2213/13148

摘要： According to particular embodiments, determining paths in a network with asymmetric switches includes receiving a graph representing the network. Each asymmetric switch has defined degree connectivity between one or more pairs of degrees of the asymmetric switch. The graph is transformed to yield a transformed graph that accounts for the asymmetric switches. A routing process is applied to the transformed graph to yield one or more paths through the network.

摘要翻译： 根据特定实施例，使用非对称交换机确定网络中的路径包括接收表示网络的图形。 每个非对称开关已经限定了非对称开关的一对或多对度之间的程度连接。 转换图形以产生解释非对称开关的变换图。 将路由过程应用于变换图，以产生通过网络的一个或多个路径。

公开(公告)号：US08750127B2

公开(公告)日：2014-06-10

申请号：US12751656

申请日：2010-03-31

申请人： Qiong Zhang ,  Mohammad Masud Hasan ,  Xi Wang ,  Paparao Palacharla ,  Takao Naito ,  Fredrick S. Gruman

发明人： Qiong Zhang ,  Mohammad Masud Hasan ,  Xi Wang ,  Paparao Palacharla ,  Takao Naito ,  Fredrick S. Gruman

IPC分类号： H04L1/00 ,  H04L12/26 ,  H04L12/56

CPC分类号： H04L45/12 ,  H04L45/00 ,  H04L45/02 ,  H04L45/04 ,  H04L45/126 ,  H04L45/128 ,  H04L45/22 ,  H04L45/28

摘要： Systems and methods for multi-domain routing are provided. In some embodiments, a method for determining a path calculation from a source node to a destination node over a multi-domain network is provided. The method may include steps for receiving a predetermined sequence of domains for communicating information from the source node to the destination node, determining a link type for each of a plurality of links in the predetermined sequence of domains, modifying the link type of one or more of the plurality of links such that the plurality of links are unidirectional links towards a destination node, and determining a path along the predetermined sequence of domains based on the modified plurality of links.

摘要翻译： 提供了多域路由的系统和方法。 在一些实施例中，提供了一种用于确定通过多域网络从源节点到目的地节点的路径计算的方法。 该方法可以包括用于接收用于将信息从源节点传送到目的地节点的预定的域序列的步骤，为预定的域序列中的多个链路中的每一个确定链路类型，修改一个或多个链路类型 所述多个链路使得所述多个链路是朝向目的地节点的单向链路，以及基于所述修改的多个链路来确定沿着所述预定的域序列的路径。