公开(公告)号：US07904085B2

公开(公告)日：2011-03-08

申请号：US10590438

申请日：2005-02-21

申请人： Tsuneo Nakata ,  Akira Arutaki ,  Makoto Nishio

发明人： Tsuneo Nakata ,  Akira Arutaki ,  Makoto Nishio

IPC分类号： H04W36/00 ,  H04B7/08

CPC分类号： H04W36/04 ,  H04B7/08 ,  H04W36/32

摘要： A transmitter/receiver 101 on a mobile body 10 utilizes a plurality of antennas 100. It is assumed that a plurality of the antennas 100 are distributed and arranged in a moving direction of the mobile body, and the antennas at both ends are away from each other at an extent that a distance between the antennas is not negligible as compared with an interval of the base station. A radio wave from the base station 102-1 is stronger in intensity in 100-1 than in the center, and the radio wave from the base station 102-2 is stronger in intensity in 100-2 than in the center, respectively, whereby the communication stabilization effect, which is larger as compared with the case that the antennas are locally located in the center, is expected. This enables the interval of the base station, which is broader than the conventional one, to be employed, yet both of a speed and a frequency of a hand-over process to be lowered, and in addition hereto, the bandwidth utilization efficiency, which is higher as compared with that of the conventional example, to be realized.

摘要翻译： 移动体10上的发射机/接收机101利用多个天线100.假设多个天线100沿着移动体的移动方向分布和布置，并且两端的天线远离每个天线 另一方面，与基站的间隔相比，天线之间的距离不可忽略。 来自基站102-1的无线电波在100-1中的强度比在中心强，而来自基站102-2的无线电波在100-2中的强度分别比中心强，因此 与天线本地位于中心的情况相比，预期通信稳定效果更大。 这使得能够采用比传统基站更宽的基站的间隔，但是转移过程的速度和频率都降低，另外还有带宽利用效率，其中 要比实施例更高。

公开(公告)号：US20080039015A1

公开(公告)日：2008-02-14

申请号：US10590438

申请日：2005-02-21

申请人： Tsuneo Nakata ,  Akira Arutaki ,  Makoto Nishio

发明人： Tsuneo Nakata ,  Akira Arutaki ,  Makoto Nishio

IPC分类号： H04Q7/22 ,  H04B7/26 ,  H04Q7/00

CPC分类号： H04W36/04 ,  H04B7/08 ,  H04W36/32

摘要： A transmitter/receiver 101 on a mobile body 10 utilizes a plurality of antennas 100. It is assumed that a plurality of the antennas 100 are distributed and arranged in a moving direction of the mobile body, and the antennas at both ends are away from each other at an extent that a distance between the antennas is not negligible as compared with an interval of the base station. A radio wave from the base station 102-1 is stronger in intensity in 100-1 than in the center, and the radio wave from the base station 102-2 is stronger in intensity in 100-2 than in the center, respectively, whereby the communication stabilization effect, which is larger as compared with the case that the antennas are locally located in the center, is expected. This enables the interval of the base station, which is broader than the conventional one, to be employed, yet both of a speed and a frequency of a hand-over process to be lowered, and in addition hereto, the bandwidth utilization efficiency, which is higher as compared with that of the conventional example, to be realized.

摘要翻译： 移动体10上的发射机/接收机101利用多个天线100.假设多个天线100沿着移动体的移动方向分布和布置，并且两端的天线远离每个天线 另一方面，与基站的间隔相比，天线之间的距离不可忽略。 来自基站102-1的无线电波在100-1中的强度比在中心强，而来自基站102-2的无线电波在100-2中的强度分别比中心强，因此 与天线本地位于中心的情况相比，预期通信稳定效果更大。 这使得能够采用比传统基站更宽的基站的间隔，但是转移过程的速度和频率都降低，另外还有带宽利用效率，其中 要比实施例更高。

公开(公告)号：US5907551A

公开(公告)日：1999-05-25

申请号：US800186

申请日：1997-02-13

申请人： Makoto Nishio ,  Kazuo Takagi

发明人： Makoto Nishio ,  Kazuo Takagi

IPC分类号： H04Q3/00 ,  H04B10/00 ,  H04B10/275 ,  H04B10/29 ,  H04L12/423 ,  H04L12/931 ,  H04L12/56

CPC分类号： H04L12/5601 ,  H04L49/106 ,  H04L49/1553 ,  H04L49/256 ,  H04L49/3081 ,  H04L2012/5605 ,  H04L2012/5652

摘要： In an ATM switching system, bi-directionally coupling devices establish connections between corresponding interface units and an ATM switching module. The switching module includes a self-routing switch, an input distribution network for establishing connections between the bi-directionally coupling devices and the input ports of the self-routing switch, and an output distribution network for establishing connections between the output ports of the self-routing switch and bi-directionally coupling devices. The bi-directionally coupling devices and the input and output distribution networks are controlled in accordance with data supplied from the interface units indicating the directions of signals passing through the interface units and the operating speed of the interface units.

摘要翻译： 在ATM交换系统中，双向耦合设备在对应的接口单元和ATM交换模块之间建立连接。 交换模块包括自路由交换机，用于建立双向耦合设备与自路由交换机的输入端口之间的连接的输入分配网络，以及用于建立自身的输出端口之间的连接的输出分配网络 路由开关和双向耦合器件。 双向耦合设备和输入和输出分配网络根据从接口单元提供的指示通过接口单元的信号的方向和接口单元的操作速度的数据来控制。

公开(公告)号：US5521732A

公开(公告)日：1996-05-28

申请号：US255427

申请日：1994-06-08

申请人： Makoto Nishio

发明人： Makoto Nishio

IPC分类号： H04J14/00 ,  H04B10/272 ,  H04J14/02 ,  H04B10/207 ,  H04J14/08

CPC分类号： H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： An optical wavelength selection control system in an optical network includes an optical center node device and a plurality of terminal devices each comprised of a work station and an interface. The optical center node device includes a control circuit, a plurality of optical switches and a plurality of tunable wavelength filters. When there occurs a collision among the plurality of terminal devices wherein a plurality of terminal devices send simultaneously optical packets to the same terminal device, the control circuit operates to control the optical switches and the tunable wavelength filters such that they select only one optical packet, based on information relating to, for example, a data length to be transferred. The control circuit sends out an acknowledgment (ACK) signal to the terminal device whose optical packet has been selected. To each of the terminal devices whose optical packets have not been selected, the control circuit sends out, in addition to a not-acknowledgement (NACK) signal, a signal indicating a resending time schedule. There are no possibilities any more for at least these optical packets to be involved in the collision problems, and this ensures an enhancement of the throughput of the network system.

摘要翻译： 光网络中的光波长选择控制系统包括光中心节点设备和多个终端设备，每个终端设备包括工作站和接口。 光中心节点装置包括控制电路，多个光开关和多个可调波长滤波器。 当多个终端装置之间发生冲突时，其中多个终端装置同时向同一终端装置发送光分组，控制电路操作以控制光开关和可调波长滤波器，使得它们仅选择一个光分组， 基于与例如要传送的数据长度有关的信息。 控制电路向已经选择了光分组的终端装置发送确认（ACK）信号。 对于没有选择光学分组的每个终端设备，除了不确认（NACK）信号之外，控制电路还发送指示重新发送时间表的信号。 至少这些光分组不存在涉及碰撞问题的可能性，这样可以提高网络系统的吞吐量。

公开(公告)号：US4841519A

公开(公告)日：1989-06-20

申请号：US212384

申请日：1988-06-27

申请人： Makoto Nishio

发明人： Makoto Nishio

IPC分类号： H04J14/02

CPC分类号： H04J14/02

摘要： An apparatus for discriminating an optical signal from others comprises a circuit for adding one of discriminating signals to a corresponding optical signal. The discriminating signal is of a frequency lower than a band of the optical signal. Therefore, the discriminating signal is easily detected by being passed through, for instance, a low-pass filter.An apparatus for tuning an optical wavelength filter used in apparatus for discriminating an optical signal from others comprises a circuit for frequency-modulating an optical signal by a first discriminating signal and for amplitude-modulating the optical signal by a second discriminating signal having a phase information of the first discriminating signal. An optical wavelength filter is controlled to be tuned to a predetermined wavelength in accordance with a difference between a phase of the first discriminating signal and a phase of a first discriminating signal produced by the second discriminating signal, respectively, included in an output signal of the optical wavelength filter.Alternatively, the apparatus for tuning an optical wavelength filter used in an apparatus for discriminating an optical signal from others comprises a circuit for modulating an optical signal by a discriminating signal of a predetermined period. The optical wavelength filter is controlled to be tuned to a predetermined wavelength in accordance with a difference between a phase of the discriminating signal and a phase of a discriminating signal included in an output signal of the optical wavelength filter.

公开(公告)号：US20060131983A1

公开(公告)日：2006-06-22

申请号：US11289642

申请日：2005-11-30

申请人： Hirotake Hamamatsu ,  Youichi Murakami ,  Ryoichi Honbo ,  Kenzo Kiyose ,  Mitsuo Ikeda ,  Yoichi Sakaura ,  Shinya Nakagawa ,  Makoto Nishio

发明人： Hirotake Hamamatsu ,  Youichi Murakami ,  Ryoichi Honbo ,  Kenzo Kiyose ,  Mitsuo Ikeda ,  Yoichi Sakaura ,  Shinya Nakagawa ,  Makoto Nishio

IPC分类号： H02K13/00 ,  H01R39/24

CPC分类号： H02K13/006 ,  H01R39/06 ,  H01R39/20 ,  H02K13/10

摘要： In a commutator of a rotary electric machine, each of commutator segments has a low-resistive layer made of a low-resistive material and a high-resistive layer made of a high-resistive material having a specific resistance higher than that of the low-resistive material. The low-resistive material contains a carbonic material and a binder. The high-resistive material contains a carbonic material, a binder and an inorganic substance such as boron nitride. A mixing ratio of the inorganic material to the high-resistive material is more than 20 wt %. Alternatively, a brush, which makes contact with the commutator segments, can have the high-resistive layer and the low-resistive layer.

公开(公告)号：US06643042B1

公开(公告)日：2003-11-04

申请号：US09126248

申请日：1998-07-30

申请人： Makoto Nishio ,  Naoya Henmi

发明人： Makoto Nishio ,  Naoya Henmi

IPC分类号： H04L1228

CPC分类号： H04Q11/0005 ,  H04J14/0212 ,  H04Q11/0066 ,  H04Q2011/0075

摘要： Optical signals having arbitrary wavelengths of wavelength-multiplex optical signals are separated in an optical add-dorop multiplexer 110. Switching of the signals after separation and an external signal that is input outside is conducted in an ATM switch 170. The signals after the switching by the ATM switch 170 is combined with wavelength-multiplex signals in the optical add-dorop multiplexer 110.

摘要翻译： 具有波长多路复用光信号的任意波长的光信号在光学加法多路复用器110中被分离。分离后的信号的切换和外部输入的外部信号在ATM开关170中进行。切换之后的信号 ATM开关170与光学加法器多路复用器110中的波长多路复用信号组合。

公开(公告)号：US5432627A

公开(公告)日：1995-07-11

申请号：US983232

申请日：1992-11-30

申请人： Makoto Nishio

发明人： Makoto Nishio

IPC分类号： H04L12/54 ,  H04L12/70 ,  H04L12/931 ,  H04L12/935 ,  H04Q11/00 ,  H04J14/00

CPC分类号： H04L12/5601 ,  H04L49/203 ,  H04L49/3081 ,  H04L49/405 ,  H04Q11/0005 ,  H04L2012/5605 ,  H04L2012/5651 ,  H04L2012/5652 ,  H04L2012/5672 ,  H04L2012/5681 ,  H04Q11/0066 ,  H04Q2011/0009 ,  H04Q2011/0013 ,  H04Q2011/0015 ,  H04Q2011/002 ,  H04Q2011/0039 ,  H04Q2011/0045 ,  H04Q2011/0047 ,  H04Q2011/0052

摘要： In an optical ATM switching system, an optical ATM cell is produced in response to an incoming ATM cell so that it contains an optical routing bit in a timeslot corresponding to the destination of the cell. A first switching stage is provided for routing the cell from one of its inlets to one of its outlets in accordance with the routing bit contained in the cell and generating a routing signal indicative of the position of the outlet to which the cell is routed. A second switching stage is connected to the outlets of the first switching stage for routing the cell to one of optical buffers in response to the routing signal from the first switching stage. Optical combiners are provided, each corresponding to a group of the optical buffers for combining outputs of the corresponding group of optical combiners.

摘要翻译： 在光学ATM交换系统中，响应于进入的ATM信元产生光学ATM信元，使得其在对应于小区的目的地的时隙中包含光路由比特。 提供第一切换级，用于根据包含在该小区中的路由选择位将该小区从其一个入口路由到其一个出口，并产生指示该小区路由到的出口位置的路由信号。 响应于来自第一切换级的路由信号，第二切换级连接到第一切换级的出口，用于将该单元路由到光缓冲器之一。 提供了光学组合器，每个光学组合器对应于一组光学缓冲器，用于组合相应组的光学组合器的输出。

公开(公告)号：US5404240A

公开(公告)日：1995-04-04

申请号：US835304

申请日：1992-02-14

申请人： Makoto Nishio ,  Takahiro Numai

发明人： Makoto Nishio ,  Takahiro Numai

IPC分类号： H04Q3/52 ,  H04Q11/00 ,  H04J4/00

CPC分类号： H04Q11/0005 ,  H04Q2011/002

摘要： An optical switching system for optical wavelength-division and time-division multiplexed signals includes a plurality of tunable wavelength filters each of which selects a signal having a desired wavelength from an optical wavelength-division and time-division multiplexed signal, a plurality of optical memory elements each of which is supplied with an output signal of each of the plurality of tunable wavelength filters. Each optical memory element memorizes a light intensity of the output signal by being applied with a first control voltage and supplies an output port with the output signal which is converted to have a predetermined wavelength in a desired time slot. The tunable wavelength filters and optical memory elements may by replaced by wavelength filters and tunable wavelength optical memories.

摘要翻译： 光波分复用信号的光切换系统包括多个可调波长滤波器，每个可调波长滤波器从光波分复用信号和时分复用信号中选择具有所需波长的信号，多个光存储器 其中每个元件被提供有多个可调波长滤波器的每一个的输出信号。 每个光存储器元件通过施加第一控制电压来存储输出信号的光强度，并且向输出端口提供在期望的时隙中转换为具有预定波长的输出信号。 可调波长滤波器和光学存储器元件可以由波长滤波器和可调波长光学存储器代替。

公开(公告)号：US5208691A

公开(公告)日：1993-05-04

申请号：US723157

申请日：1991-06-28

申请人： Makoto Nishio

发明人： Makoto Nishio

IPC分类号： H04J14/00 ,  H04B10/27 ,  H04J4/00 ,  H04J14/04 ,  H04J14/06 ,  H04Q3/52 ,  H04Q11/00

CPC分类号： H04Q11/0001

摘要： An optical switching network comprises a plurality of optical splitters coupled respectively to inlet highways for receiving wavelength-time division multiplex (WTDM) signals through the respective inlet highways, each of the multiplex signals comprising a series of WTDM signals each being identified by a unique wavelength and a unique time slot. A like plurality of sets of tunable wavelength filters are provided. The filters of each set are coupled to respective outputs of the splitters for selecting one of the WTDM signals. A like plurality of time-space switches are associated respectively with the sets of the tunable wavelength filters. Each of the time-space switches has input ports and output ports, the input ports of the time-space switch being coupled respectively to outputs of the filters of the associated set for interchanging the time slot of the selected WTDM signal with another time slot and establishing a path for the selected wavelength between the input ports and the output ports. A like plurality of sets of wavelength tunable lasers are provided, the wavelength tunable lasers of each set being coupled to the output ports of an associated one of the time-space switches for generating an optical output according to the WTDM signal from the established path, the optical output having a wavelength different from the wavelength of the selected WTDM signal. A like plurality of optical combiners are provided for coupling the output of the wavelength tunable lasers of different sets to a respective one of outlet highways.