公开(公告)号：US07761686B2

公开(公告)日：2010-07-20

申请号：US10972429

申请日：2004-10-26

申请人： Seigo Takahashi ,  Atsushi Ike

发明人： Seigo Takahashi ,  Atsushi Ike

IPC分类号： G06F12/00 ,  G06F12/08 ,  G06F12/10

CPC分类号： G06F12/1045 ,  G06F12/109

摘要： An address translator capable of reducing system loads in address translation and an overhead in switching between operating systems. A plurality of address translation buffers classifies and stores virtual addresses and real addresses based on a plurality of operating systems which is run by a processor. For example, the address translation buffers store the virtual addresses and the real addresses in correspondence with the operating systems. According to a running operating system, an address translation controller accesses a corresponding address translation buffer to translate virtual addresses to real addresses.

摘要翻译： 一种地址转换器，能够减少地址转换中的系统负载以及在操作系统之间切换的开销。 多个地址转换缓冲器基于由处理器运行的多个操作系统对虚拟地址和实际地址进行分类和存储。 例如，地址转换缓冲器存储与操作系统相对应的虚拟地址和实际地址。 根据正在运行的操作系统，地址转换控制器访问相应的地址转换缓冲器以将虚拟地址转换为实际地址。

公开(公告)号：US20090262942A1

公开(公告)日：2009-10-22

申请号：US12385832

申请日：2009-04-21

申请人： Wakako Maeda ,  Akio Tajima ,  Seigo Takahashi ,  Akihiro Tanaka

发明人： Wakako Maeda ,  Akio Tajima ,  Seigo Takahashi ,  Akihiro Tanaka

IPC分类号： H04L9/08 ,  H04K1/00

CPC分类号： H04L9/0855 ,  H04L9/083

摘要： A method for managing shared random numbers in a secret communication network including at least one center node and a plurality of remote nodes connected to the center node, includes: sharing random number sequences between the center node and respective ones of the plurality of remote nodes; when performing random numbers sharing between a first remote node storing a first random number sequence shared with the center node and a second remote node storing a second random number sequence shared with the center node, distributing a part of the second random number sequence from the center node to the first remote node; and sharing the part of the second random number sequence between the first remote node and the second remote node.

摘要翻译： 一种用于在包括至少一个中心节点和连接到中心节点的多个远程节点的秘密通信网络中管理共享随机数的方法，包括：在所述中心节点和所述多个远程节点中的相应节点之间共享随机数序列; 当在存储与中心节点共享的第一随机数序列的第一远程节点和存储与中心节点共享的第二随机数序列的第二远程节点之间执行随机数共享时，从中心分配第二随机数序列的一部分 节点到第一个远程节点; 并且在第一远程节点和第二远程节点之间共享第二随机数序列的部分。

公开(公告)号：US20090074425A1

公开(公告)日：2009-03-19

申请号：US12190923

申请日：2008-08-13

申请人： AKIHIRO TANAKA ,  Akio Tajima ,  Seigo Takahashi ,  Wakako Maeda

发明人： AKIHIRO TANAKA ,  Akio Tajima ,  Seigo Takahashi ,  Wakako Maeda

IPC分类号： H04B10/04

CPC分类号： H04B10/5051 ,  H04B10/5053 ,  H04B10/541 ,  H04B10/548

摘要： An optical transmitter which modulates the phases and intensities of double pulses and then transmits them, includes a branching section which branches each of the input double pulses to first and second paths, a first optical modulator placed in the first path, second and third optical modulators placed in series in the second path, and a combining section which combines the double pulses having traveled through the first path with the double pulses having traveled through the second path to output double pulses. A control section controls such that each of the first and second optical modulators performs any one of relative intensity modulation and relative phase modulation on the double pulses passing through, and the third optical modulator performs relative phase modulation on the double pulses passing through.

摘要翻译： 调制双脉冲的相位和强度然后传输它们的光发射器包括分支部分，其将每个输入双脉冲分支到第一和第二路径，放置在第一路径中的第一光调制器，第二和第三光调制器 串联放置在第二路径中，以及组合部分，其将通过第一路径行进的双脉冲与已经穿过第二路径的双脉冲组合以输出双脉冲。 控制部分控制使得第一和第二光学调制器中的每一个对通过的双脉冲执行相对强度调制和相对相位调制中的任何一个，并且第三光调制器对通过的双脉冲执行相对相位调制。

公开(公告)号：US07422024B2

公开(公告)日：2008-09-09

申请号：US10909187

申请日：2004-07-30

申请人： Seigo Takahashi ,  Junpei Ohkawara ,  Kazunari Suzuki

发明人： Seigo Takahashi ,  Junpei Ohkawara ,  Kazunari Suzuki

IPC分类号： B08B3/00 ,  B08B3/12 ,  B08B6/00

CPC分类号： B08B3/02 ,  B08B2203/0288 ,  Y10S134/902

摘要： An ultrasonic shower cleaning apparatus is disclosed which is capable of efficiently cleaning both surfaces of an article and configured to have a reduced size enabling an installation space thereof to be decreased. A pair of ultrasonic shower cleaning mechanisms each include a nozzle, a disc-shaped ultrasonic transducer arranged so as to face a backward end of the nozzle and an inlet port for a cleaning liquid formed opposite to a side surface of the nozzle. The ultrasonic shower cleaning mechanisms are integrally incorporated in one casing in such a manner that axes of the nozzles cross each other at a predetermined angle. The casing is provided with one inlet branch port connected to the inlet ports of the ultrasonic shower cleaning mechanisms. The casing may have a groove formed therein in which an edge of the article arranged between the two nozzles can be inserted.

摘要翻译： 公开了一种超声波淋浴清洗装置，其能够有效地清洁物品的两个表面并且被配置为具有能够减小其安装空间的减小的尺寸。 一对超声波淋浴清洗机构各自包括喷嘴，布置成面对喷嘴的后端的盘形超声波换能器和与喷嘴的侧表面相对地形成的清洁液的入口。 超声波清洗机构以一定的角度相互交叉的方式一体地结合在一个壳体中。 壳体设置有连接到超声波淋浴清洗机构的入口的一个入口分支端口。 壳体可以具有形成在其中的凹槽，其中可以插入布置在两个喷嘴之间的物品的边缘。

公开(公告)号：US20070248362A1

公开(公告)日：2007-10-25

申请号：US11788707

申请日：2007-04-20

申请人： Akihiro Tanaka ,  Akio Tajima ,  Seigo Takahashi ,  Wakako Maeda

发明人： Akihiro Tanaka ,  Akio Tajima ,  Seigo Takahashi ,  Wakako Maeda

IPC分类号： H04B10/04

CPC分类号： H04B10/5051 ,  H04B10/505 ,  H04B10/54 ,  H04B10/548 ,  H04B10/70 ,  H04L9/0858

摘要： An optical communication apparatus that can perform stable intensity and phase modulation on an optical pulse at high speed is provided, as well as a quantum key distribution system using the apparatus. Using multilevel signals for the electric signals (RF1, RF2) to be applied to two arms of a two-electrode Mach-Zehnder modulator, phase modulation is performed on an optical pulse in accordance with the average of the levels of the signals (RF1, RF2), and intensity modulation is performed on the optical pulse in accordance with the voltage difference between the signals (RF1, RF2), whereby stable high-speed multilevel modulation can be realized. The cryptographic key generation rate in a decoy quantum key distribution system is enhanced.

摘要翻译： 提供了可以对光脉冲高速执行稳定的强度和相位调制的光通信装置，以及使用该装置的量子密钥分发系统。 使用多电平信号将电信号（RF 1，RF 2）施加到两电极马赫 - 曾德调制器的两个臂，根据信号电平的平均值对光脉冲进行相位调制（ RF 1，RF 2），并且根据信号（RF 1，RF 2）之间的电压差对光脉冲执行强度调制，从而可以实现稳定的高速多电平调制。 诱饵量子密钥分发系统中的加密密钥产生速率得到提高。

公开(公告)号：US20070110242A1

公开(公告)日：2007-05-17

申请号：US10581037

申请日：2004-11-29

申请人： Akihisa Tomita ,  Kazuo Nakamura ,  Akio Tajima ,  Akihiro Tanaka ,  Yoshihiro Nanbu ,  Shuuji Suzuki ,  Takeshi Takeuchi ,  Wakako Maeda ,  Seigo Takahashi

发明人： Akihisa Tomita ,  Kazuo Nakamura ,  Akio Tajima ,  Akihiro Tanaka ,  Yoshihiro Nanbu ,  Shuuji Suzuki ,  Takeshi Takeuchi ,  Wakako Maeda ,  Seigo Takahashi

IPC分类号： H04K1/00 ,  G01J4/00 ,  G01B9/02 ,  G01J3/45

CPC分类号： H04L9/0858

摘要： A communication system capable of employing polarization-dependent phase modulators with a reversing configuration that preserves security against disturbance of a polarization state at a transmission path but without using Faraday mirrors and a communication method using the same are provided. A quantum cryptography system of the present invention includes a first station 1, a transmission path 2, and a second station 3. The first station 1 has means for emitting time-divided optical pulses into the transmission path 2 and measuring a phase difference between the optical pulses returning from the transmission path 2. The transmission path 2 is a medium of light. The second station 3 has means for reversing traveling directions of the optical pulses, means for producing a phase difference, corresponding to a random number bit value to be transmitted, between the time-divided optical pulses, means for splitting the entering optical pulse into orthogonally polarized components and producing a 180-degree phase difference therebetween, means for rotating each polarization direction by 90 degrees, means for eliminating a component resulting from a deviation from the polarization rotation angle of 90 degrees, and means for attenuating optical pulse intensity to include no more than 1 photon per bit.

摘要翻译： 一种能够采用具有反转配置的偏振相关相位调制器的通信系统，其提供了防止在传输路径上的偏振状态的干扰的安全性，但是不使用法拉第镜和使用其的通信方法。 本发明的量子密码系统包括第一站1，传输路径2和第二站3。 第一台1具有将时分光脉冲发射到传输路径2中并测量从传输路径2返回的光脉冲之间的相位差的装置。 传输路径2是光的介质。 第二站3具有用于反转光脉冲的行进方向的装置，用于在分时光脉冲之间产生与要发送的随机数位值相对应的相位差的装置，用于将进入的光脉冲分成正交的装置 偏振分量，并产生180度的相位差，使每个偏振方向旋转90度的装置，用于消除由偏振旋转角度90度偏差产生的分量的装置，以及用于衰减光脉冲强度的装置， 每位多于1个光子。

公开(公告)号：US07197246B2

公开(公告)日：2007-03-27

申请号：US10227892

申请日：2002-08-27

申请人： Hirofumi Shimomura ,  Seigo Takahashi ,  Naoya Henmi

发明人： Hirofumi Shimomura ,  Seigo Takahashi ,  Naoya Henmi

IPC分类号： H04J14/02

CPC分类号： H04Q11/0001 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094061 ,  H01S3/10007 ,  H01S3/1608 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0221

摘要： The first present invention provides an optical switch including the following elements. At least a plurality of optical transmission lines are provided for transmissions of optical signals. Each of the at least plurality of optical transmission lines have at least an impurity doped fiber. At least an excitation light source is provided for emitting an excitation light. At least an excitation light switch is provided which is connected to the excitation light source and also connected to the at least plurality of optical transmission lines for individual switching operations to supply the excitation light to the at least plurality of optical transmission lines to feed the excitation light to the impurity doped fiber on the at least plurality of optical transmission lines, thereby causing an excitation of the impurity doped fiber on selected one of the at least plurality of optical transmission lines so as to permit a transmission of the optical signal through the excited impurity doped fiber, whilst unselected one of the impurity doped fibers is unexcited whereby the optical signals are absorbed into the unselected one of the impurity doped fibers thereby to discontinue transmission of the optical signal by the unselected one of the impurity doped fibers.

摘要翻译： 第一本发明提供一种包括以下元件的光开关。 至少多个光传输线被提供用于光信号的传输。 所述至少多个光传输线中的每一个至少具有杂质掺杂光纤。 至少提供了用于发射激发光的激发光源。 至少提供激励光开关，其连接到激发光源并且还连接到用于单独切换操作的至少多个光传输线，以将激发光提供给至少多个光传输线以馈送激励 在所述至少多个光传输线上对所述杂质掺杂光纤进行光照射，从而使所述杂质掺杂光纤在所述至少多个光传输线路中的所选择的一个光纤传输线路上激发，以允许所述光信号通过所述激发 杂质掺杂光纤，而未选择的杂质掺杂光纤之一是未被激发的，由此光信号被吸收到未选择的杂质掺杂光纤中，从而由未选择的杂质掺杂光纤中止光信号的透射。

公开(公告)号：US20060219871A1

公开(公告)日：2006-10-05

申请号：US11392575

申请日：2006-03-30

申请人： Seigo Takahashi ,  Akio Tajima ,  Takeshi Takeuchi ,  Akihiro Tanaka ,  Wakako Maeda

发明人： Seigo Takahashi ,  Akio Tajima ,  Takeshi Takeuchi ,  Akihiro Tanaka ,  Wakako Maeda

IPC分类号： H01J40/14

CPC分类号： H03F1/26 ,  H03F3/087 ,  H03F2200/198

摘要： In a photo detecting circuit using an avalanche photodiode (APD), a pulse noise mask signal indicating the timing of occurrence of a pulse noise is generated by XORing a reverse-bias-pulse application timing signal and its delayed signal. Pulse noises are eliminated by ANDing an output signal of the APD and the pulse noise mask signal. Alternatively, a pulse noise is estimated by taking the average for the output current signal a given number of times. Pulse noises are eliminated by subtracting the estimated pulse noise from the APD output signal.

摘要翻译： 在使用雪崩光电二极管（APD）的光检测电路中，通过对反向偏置脉冲施加定时信号及其延迟信号进行异或来产生表示脉冲噪声发生的定时的脉冲噪声屏蔽信号。 通过对APD的输出信号和脉冲噪声屏蔽信号进行AND运算来消除脉冲噪声。 或者，通过将输出电流信号的平均值取给定次数来估计脉冲噪声。 通过从APD输出信号中减去估计的脉冲噪声来消除脉冲噪声。

公开(公告)号：USD496341S1

公开(公告)日：2004-09-21

申请号：US29194648

申请日：2003-11-26

申请人： Kiyoshi Nakata ,  Takashi Inoue ,  Seigo Takahashi

设计人： Kiyoshi Nakata ,  Takashi Inoue ,  Seigo Takahashi

公开(公告)号：US06760552B1

公开(公告)日：2004-07-06

申请号：US09532420

申请日：2000-03-23

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

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

IPC分类号： H04B1006

CPC分类号： H04B10/6931

摘要： An optical receiving circuit 1 is composed of a preamplifier circuit 2, an output differential amplifier 3 and a mean value holding circuit 4. The optical receiving circuit 1 is connected to a photodetector 5 for receiving an input optical signal and outputting current. For the preamplifier circuit 2, a transimpedance type circuit may also be used. The preamplifier circuit 2 comprises a feedback resistor 21 and a resistor for detecting output voltage 22, the transimpedance gain is 55 dB &OHgr; and 3 dB bandwidth when the photodetector 5 the capacity of which is 0.2 pF is connected to its output is 8 GHz. The output differential amplifier 3 discriminates and regenerates data by regulating reference voltage Vref between the high level and the low level of the amplitude of an input signal. The mean value holding circuit 4 includes a sample-hold circuit 41 and capacity 42 for holding the mean value of voltage output from the preamplifier circuit 2. As a CR time constant based upon the capacity 42 and the resistor for detection 22 is 1 ns., the mean value level of a received signal can be detected in approximately one byte of the data of 10 Gb/s. The sample-hold circuit 41 samples the detected mean value level according to a sampling pulse from an external device and holds it. The output of the sample-hold circuit 41 is used for the reference voltage of the differential amplifier 3.

摘要翻译： 光接收电路1由前置放大电路2，输出差分放大器3和平均值保持电路4组成。光接收电路1连接到用于接收输入光信号并输出​​电流的光电检测器5。 对于前置放大器电路2，也可以使用跨阻型电路。 前置放大器电路2包括反馈电阻器21和用于检测输出电压22的电阻器，当其电容为0.2pF的光电检测器5连接到其输出端时，跨阻增益为55dBΩ和3dB带宽为8GHz。 输出差分放大器3通过调节输入信号的幅度的高电平和低电平之间的参考电压Vref来识别和再生数据。 平均值保持电路4包括采样保持电路41和用于保持从前置放大器电路2输出的电压的平均值的电容42.由于基于电容42和检测电阻22的CR时间常数为1ns。 可以在10Gb / s的数据的大约一个字节中检测接收信号的平均值电平。 采样保持电路41根据来自外部设备的采样脉冲对检测到的平均值电平进行采样并保持。 采样保持电路41的输出用于差分放大器3的参考电压。