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1. 发明专利

JP2015043619A 暗号通信システムおよび暗号通信方法有权
标题翻译：加密通信系统和加密通信方法
公开(公告)号：JP2015043619A
公开(公告)日：2015-03-05
申请号：JP2014220342
申请日：2014-10-29
申请人：日本電気株式会社 , Nec Corp
发明人： TANAKA AKITOMO , TAJIMA AKIO , TOMITA AKIHISA , TAKAHASHI SEIGO
IPC分类号： H04L9/08 , H04L9/12 , H04L9/14
摘要：【課題】中継局の信頼性劣化に対して暗号化通信の安全性劣化を抑制することができる暗号通信システム、暗号通信方法および装置を提供する。【解決手段】通信相手(11,16)と接続した複数の異なる物理的に独立な並列経路を通して、通信相手と複数の独立な暗号鍵(K11, K13)を共有するための鍵共有手段(111,112,161,162)と、通信相手へ送信するメッセージ(M)を通信相手と共有した暗号鍵を用いて多重暗号化し、通信相手から受信した多重暗号化メッセージを前記通信相手と共有した暗号鍵を用いて復号する多重暗号化部(113)および多重復号部(163)を有する。【選択図】図3
摘要翻译：要解决的问题：提供能够抑制加密通信的安全性劣化的加密通信系统，加密通信方法和装置，防止中继站的可靠性劣化。解决方案：加密通信系统包括：密钥共享装置（111,112,161,162），用于通过与所述通信对方连接的多个不同的物理独立并行路径与通信对方（11,16）共享多个独立加密密钥（K，K）以及多个加密单元（113）和多个解密单元（163），用于对通过与通信对方共享的加密密钥发送到通信对方的消息（M）执行多重加密，并且用于解密多个通过与通信对方共享的加密密钥从通信对方接收到的加密按摩。

2. 发明专利

JP2011101116A Optical repeater, optical communication system and method of controlling optical repeater 审中-公开
标题翻译：光学重复器，光通信系统和控制光学重复器的方法
公开(公告)号：JP2011101116A
公开(公告)日：2011-05-19
申请号：JP2009253362
申请日：2009-11-04
申请人： Nec Corp , 日本電気株式会社
发明人： MEIRAKU TOMOHIRO , TAJIMA AKIO , TAKAHASHI SEIGO , UCHIKATA TATSUYA , TANAKA AKITOMO
IPC分类号： H04B10/27 , H04B10/272 , H04B10/29 , H04B10/294
摘要： PROBLEM TO BE SOLVED: To provide an optical repeater or the like capable of switching an optical functional device to a setup suited to respective optical signals at accurate timing.
SOLUTION: A memory 17 stores fixed time Tm+k corresponding to the length of the optical signal transmitted by an m+kth ONU 12 and a setup value Gm+k+1 relating to processing to the optical signal transmitted by an m+k+1th ONU 12, beforehand. A control part 18 reads the fixed time Tm+k and the setup value Gm+k+1 stored in the memory 17, and sets the setup value Gm+k+1 to the optical functional device 15 after the lapse of the fixed time Tm+k after the reception of the optical signals transmitted from the m+kth ONU 12 is started in an up signal receiving unit 16.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在精确的定时将光功能器件切换到适合于各个光信号的设置的光中继器等。解决方案：存储器17存储对应于由第m +第k个ONU 12发送的光信号的长度的固定时间Tm + k和与由m传送的光信号相关的处理的建立值Gm + k + 1 +第k +第1个ONU 12。控制部分18读取存储在存储器17中的固定时间Tm + k和设定值Gm + k + 1，并且在经过固定时间Tm之后将设置值Gm + k + 1设置到光学功能器件15 在上行信号接收单元16中开始从第m +第k个ONU 12发送的光信号的接收之后的+ k。版权所有：（C）2011，JPO＆INPIT

3. 发明专利

JP2011075577A Photon detector circuit and noise filtering method 有权
标题翻译：光电探测器电路和噪声滤波方法
公开(公告)号：JP2011075577A
公开(公告)日：2011-04-14
申请号：JP2010282602
申请日：2010-12-20
申请人： Nec Corp , 日本電気株式会社
发明人： TAKAHASHI SEIGO , TAJIMA AKIO , TAKEUCHI TAKESHI , TANAKA AKITOMO , MAEDA WAKAKO
IPC分类号： G01J1/42 , H01L31/10
摘要： PROBLEM TO BE SOLVED: To provide a pulse noise filtering method which enables speed-up of a photon detector without specifically-adjusting features such as APD to be used, and a photon detector circuit using it. SOLUTION: In this method, a timing generator circuit 71 generates timing signal which applies reverse bias pulse voltage to a photodetector 2, a power supply circuit 1 applies reverse bias pulse voltage to the photodetector 2 in accordance with the timing signal, and then a subtractor 63 subtracts output current signal of the photodetector 2 previously-fetched from the latest output current signal of the photodetector 2 to filter out noise. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在不特别调整要使用的APD的特征的情况下实现光子检测器的加速的脉冲噪声滤波方法，以及使用它的光子检测器电路。解决方案：在该方法中，定时发生器电路71产生向光电检测器2施加反向偏压脉冲电压的定时信号，电源电路1根据定时信号向反射偏压脉冲电压施加反射偏压脉冲电压，则减法器63从光电检测器2的最新输出电流信号中减去预先获取的光电检测器2的输出电流信号，以滤除噪声。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2010166285A Optical receiving device and optical receiving method 审中-公开
标题翻译：光接收装置和光接收方法
公开(公告)号：JP2010166285A
公开(公告)日：2010-07-29
申请号：JP2009006355
申请日：2009-01-15
申请人： Nec Corp , 日本電気株式会社
发明人： TANAKA AKITOMO , TAJIMA AKIO , TAKAHASHI SEIGO
IPC分类号： H04L9/12 , H04B10/516 , H04B10/548 , H04B10/61 , H04B10/70
摘要： PROBLEM TO BE SOLVED: To provide an optical receiving device and method capable of avoiding deterioration of security by eliminating a unilateral deviation applied to each of a plurality of photodetectors.
SOLUTION: The optical receiving device for receiving a modulated optical pulse has a plurality of optical detection means (APD0, APD1, and PD1 to PD4) for detecting an optical pulse in accordance with a modulated state of the optical pulse, and control means (203 and 502) for controlling effective time domains (G0, G1, and W1 to W4) of the plurality of optical detection means so as to have different widths, respectively.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过消除施加到多个光电检测器中的每一个的单方向偏移来避免安全性恶化的光接收装置和方法。解决方案：用于接收调制光脉冲的光接收装置具有多个光检测装置（APD0，APD1和PD1至PD4），用于根据光脉冲的调制状态检测光脉冲，并且控制用于分别控制多个光学检测装置的有效时域（G0，G1和W1至W4）以便具有不同宽度的装置（203和502）。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2009265159A Method and system for managing shared random number in secret communication network 审中-公开
标题翻译：用于管理秘密通信网络中共享的随机数的方法和系统
公开(公告)号：JP2009265159A
公开(公告)日：2009-11-12
申请号：JP2008111365
申请日：2008-04-22
申请人： Nec Corp , 日本電気株式会社
发明人： MAEDA WAKAKO , TAJIMA AKIO , TAKAHASHI SEIGO , TANAKA AKITOMO
IPC分类号： G09C1/00
CPC分类号： H04L9/0855 , H04L9/083
摘要： PROBLEM TO BE SOLVED: To provide a method and a system for managing shared random numbers by which random number sequences can be efficiently and securely shared between a plurality of nodes, and also can be easily managed.
SOLUTION: In the method for managing shared random numbers in a secret communication network including at least one center node CN and a plurality of remote nodes RN-1 to RN-N connected to the center node CN: random number sequences Q1-QN are shared between the center node CN and respective ones of the plurality of remote nodes, when performing communication between a first remote node RN-1 and a second remote node RN-2, a part K2_1.enc of the second random number sequence of the second remote node is distributed from the center node CN to the first remote node RN-1, the part of the second random number sequence is shared between the first remote node and the second remote node.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于管理共享随机数的方法和系统，通过该方法和系统可以在多个节点之间有效且安全地共享随机数序列，并且还可以容易地管理。解决方案：在包括至少一个中心节点CN和连接到中心节点CN的多个远程节点RN-1至RN-N的秘密通信网络中管理共享随机数的方法中：随机数序列Q1- 当在第一远程节点RN-1和第二远程节点RN-2之间执行通信时，QN在中心节点CN和多个远程节点中的相应节点之间共享，第二随机数序列的部分K2_1.enc 第二远程节点从中央节点CN分配到第一远程节点RN-1，第二随机数序列的部分在第一远程节点和第二远程节点之间共享。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009060555A Optical transmitter and control method of combined modulator 有权
标题翻译：组合调制器的光学发射机和控制方法
公开(公告)号：JP2009060555A
公开(公告)日：2009-03-19
申请号：JP2007228510
申请日：2007-09-04
申请人： Nec Corp , 日本電気株式会社
发明人： TANAKA AKITOMO , TAJIMA AKIO , TAKAHASHI SEIGO , MAEDA WAKAKO
IPC分类号： H04B10/516 , H04B10/524 , H04B10/54 , H04B10/556 , H04B10/61 , H04B10/70
CPC分类号： H04B10/5051 , H04B10/5053 , H04B10/541 , H04B10/548
摘要： PROBLEM TO BE SOLVED: To provide an optical transmitter newly configured to perform intensity three-valued and phase four-valued modulation by reducing the number of modulators and a control method of a combined modulator used therefor.
SOLUTION: A combined optical modulator 103 is an optical transmitter that performs phase modulation and intensity modulation on two series of pulses and transmits them, including: a branching unit 131 for branching the input two series of pulses to a first path and a second path; a first optical modulator 142 provided on the first path; a second optical modulator 133 and third optical modulator 134 provided in series on the second path; and a multiplexing unit 135 for multiplexing the two series of pulses passing through the first path and the two series of pulses passing through the second path to produce output two series of pulses. A control unit 108 controls a driver 105 to carry out either relative intensity modulation or relative phase modulation between the two series of pulses passing through the first optical modulator 132 and the second optical modulator 133, respectively, and to carry out relative phase modulation between the two series of pulses passing through the third optical modulator.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种新配置为通过减少调制器的数量来执行强度三值和四值调制的光发射机，以及用于其的组合调制器的控制方法。解决方案：组合光调制器103是对两个脉冲串执行相位调制和强度调制的光发送器，并且发送它们，包括：分支单元131，用于将输入的两个脉冲序列分支到第一路径和第二条路设置在第一路径上的第一光学调制器142; 在第二路径上串联设置的第二光调制器133和第三光调制器134; 以及复用单元135，用于对通过第一路径的两个脉冲串和通过第二路径的两个脉冲串进行多路复用以产生输出两个脉冲串。控制单元108控制驱动器105分别在通过第一光调制器132和第二光调制器133的两个脉冲串之间执行相对强度调制或相对相位调制，并且在两束脉冲通过第三光调制器。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2008311916A Subscriber side terminating device and subscriber side power feeding method 审中-公开
标题翻译：订户侧终端设备和订户侧功率供电方法
公开(公告)号：JP2008311916A
公开(公告)日：2008-12-25
申请号：JP2007157409
申请日：2007-06-14
申请人： Nec Corp , 日本電気株式会社
发明人： TAKAHASHI SEIGO
IPC分类号： H04B10/27 , H04B10/272 , H04B10/80
摘要： PROBLEM TO BE SOLVED: To evade the complete consumption of a secondary battery even when a long-time power failure occurs.
SOLUTION: The subscriber side terminating device comprises: a power supply circuit 11 for supplying power from a commercial power source into the present device; a photovoltaic element 10 which is an array light receiving element for receiving optical signals transmitted from a station side terminating device through an optical fiber 14; the secondary battery 12 for supplying the power into the present device when the commercial power source fails; and a power supply changeover switch 13 for connecting the secondary battery 12 to the output of the power supply circuit 11 when the power is supplied from the commercial power source, and disconnecting the secondary battery 12 from the output of the power supply circuit 11 and connecting the output of the photovoltaic element 10 to the secondary battery 12 when the commercial power source fails.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使发生长时间的电源故障，也可以避免二次电池的完全消耗。解决方案：用户端终端设备包括：电源电路11，用于从商用电源向本设备供电; 光电元件10，其是用于接收通过光纤14从站侧端接装置发送的光信号的阵列光接收元件; 二次电池12，用于在商用电源发生故障时将电力供给到本装置中; 以及电源切换开关13，用于当从商用电源供电时将二次电池12连接到电源电路11的输出端，并且将二次电池12与电源电路11的输出断开连接当商业电源发生故障时，光伏元件10向二次电池12的输出。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008306633A Method and apparatus for managing encryption key in private communication network 有权
标题翻译：用于在私有通信网络中管理加密密钥的方法和装置
公开(公告)号：JP2008306633A
公开(公告)日：2008-12-18
申请号：JP2007153807
申请日：2007-06-11
申请人： Nec Corp , 日本電気株式会社
发明人： MAEDA WAKAKO , TAJIMA AKIO , TANAKA AKITOMO , TAKAHASHI SEIGO
IPC分类号： H04L9/08 , H04L9/12
CPC分类号： H04L9/0855 , H04L9/083 , H04L9/0891
摘要： PROBLEM TO BE SOLVED: To provide an encryption key management method and apparatus in which encryption keys of a plurality of nodes can be easily and stably managed. SOLUTION: The present invention relates to the encryption key management apparatus in a system which includes at least one first node and a plurality of second nodes connected to the first nodes and in which an encryption key is individually generated and consumed between each first node and each of the plurality of second nodes connected thereto, including: a monitor for monitoring the key storage amount of encryption keys corresponding to the second nodes at each first node; and a key management control section for performing key generation control on the corresponding first node on the basis of the key storage amount. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供能够容易且稳定地管理多个节点的加密密钥的加密密钥管理方法和装置。解决方案：本发明涉及一种系统中的加密密钥管理装置，其包括连接到第一节点的至少一个第一节点和多个第二节点，并且其中在每个第一节点之间分别生成并消耗加密密钥节点和与其连接的多个第二节点中的每一个，包括：监视器，用于监视与每个第一节点处的第二节点对应的加密密钥的密钥存储量; 以及密钥管理控制部分，用于基于密钥存储量对相应的第一节点执行密钥生成控制。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008252919A Communication system and its synchronous method 有权
标题翻译：通信系统及其同步方法
公开(公告)号：JP2008252919A
公开(公告)日：2008-10-16
申请号：JP2008122041
申请日：2008-05-08
申请人： Nec Corp , 日本電気株式会社
发明人： TAJIMA AKIO , MAEDA WAKAKO , TAKAHASHI SEIGO , TANAKA AKITOMO , SUZUKI SHUJI
IPC分类号： H04L9/12
摘要： PROBLEM TO BE SOLVED: To provide a method and a system to establish synchronization of channels between a transmitter and a receiver connected by channels capable of carrying out accurate clock extraction and channels incapable of that. SOLUTION: A clock from a master clock 44 of a sender 10 is transmitted to a receiver 20 through a classical channel 52, and is returned from the receiver 20. The clock is transmitted, in training mode, with strong light from a quantum unit 1 to a quantum unit 2 through a quantum channel 51 without placing transmission information thereon. A sender-side synchronization section 4 establishes phase synchronization between the clock returned and a clock detected at the quantum unit 1, and generates a calibration clock. At the receiver 20 as well, a receiver-side synchronization section 3 establishes phase synchronization between the clock detected from the classical channel 52 and the clock detected at the quantum unit 2, and generates a calibration clock. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种方法和系统，以在通过能够执行准确的时钟提取的信道和不能进行准确的时钟提取的信道连接的发射机和接收机之间建立信道的同步。解决方案：来自发送器10的主时钟44的时钟通过经典通道52发送到接收机20，并从接收机20返回。时钟在训练模式下以强光从量子单元1通过量子通道51到量子单元2，而不在其上放置传输信息。发送侧同步部分4建立在返回的时钟与量子单元1检测的时钟之间的相位同步，并产生校准时钟。在接收机20中，接收机侧同步部分3建立从经典信道52检测到的时钟与在量子单元2检测到的时钟之间的相位同步，并产生校准时钟。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2006352194A PHOTON TRANSMISSION APPARATUS AND CONTROL METHOD THEREOF, AND PHOTON COMMUNICATION SYSTEM 审中-公开
公开(公告)号：JP2006352194A
公开(公告)日：2006-12-28
申请号：JP2005171841
申请日：2005-06-13
申请人： NEC CORP
发明人： TAKAHASHI SEIGO , TAJIMA AKIO , TANAKA AKITOMO , TAKEUCHI TAKESHI , MAEDA WAKAKO
IPC分类号： H04B10/00 , H04B10/293 , H04B10/299 , H04B10/508 , H04B10/54 , H04B10/564 , H04B10/70 , H04L9/12
摘要： PROBLEM TO BE SOLVED: To improve clock calibration accuracy by preventing deterioration in the S/N at a receiver side in a clock calibration mode so as to relax the restriction of a system transmission distance. SOLUTION: A photon transmission apparatus 10 wherein the luminous intensity of a transmitted optical pulse train can be switched between a pseudo single photon state and a multi-photon state is provided with a semiconductor optical amplifier (SOA) 30 located in a path of the optical pulse train. A selector 31 is connected to a bias terminal of the semiconductor optical amplifier, the optical amplifier acts like an optical attenuator with a reverse bias voltage applied to the bias terminal in the pseudo single photon mode and acts like the optical amplifier with a forward bias voltage applied to the bias terminal in the multi-photon mode. COPYRIGHT: (C)2007,JPO&INPIT

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