公开(公告)号：US20100195831A1

公开(公告)日：2010-08-05

申请号：US12668919

申请日：2008-07-09

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： H04L9/08 ,  G02F1/01 ,  H04B10/04

CPC分类号： H04L9/0858 ,  H04B10/548

摘要： In a quantum cryptographic transmitter (11), a phase modulator (1103, 1104) and an LN intensity modulator (1105) apply optical phase modulation and light intensity modulation to an optical signal based on desired data to generate a desired optical signal to be transmitted to a quantum cryptographic receiver (13). Based on the number of photons detected from the desired optical signal, a bias control circuit (1108) controls an operating point in light intensity modulation of the LN intensity modulator (1105).

摘要翻译： 在量子密码发射机（11）中，相位调制器（1103,1104）和LN强度调制器（1105）根据期望的数据向光信号应用光相位调制和光强度调制，以产生要传输的所需光信号 到量子密码接收器（13）。 基于从期望的光信号检测到的光子的数量，偏置控制电路（1108）控制LN强度调制器（1105）的光强度调制中的工作点。

公开(公告)号：US07734757B2

公开(公告)日：2010-06-08

申请号：US12000471

申请日：2007-12-13

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： G06F15/173

CPC分类号： H04L63/065 ,  H04L9/0858 ,  H04L63/0428 ,  H04L63/06

摘要： A method and system for allowing communication devices to synchronously manage shared information are provided. A sender sends single-photon pulses modulated with original random numbers to a receiver and also sends frame pulses by using ordinary optical pulses. Bit comparison and basis reconciliation are performed by the frame which is defined by the frame pulses, whereby sifted keys, which are aggregated as a file, are generated by the sender and the receiver individually. The sifted keys are subjected to error correction, privacy amplification, and file sharing processing by the file, whereby common cryptographic keys are synchronously stored in the sender and the receiver individually. The generated cryptographic keys are managed as encryption keys and decryption keys separately. A newly generated key is preferentially placed in the encryption keys or decryption keys that have a smaller stored amount.

摘要翻译： 提供了允许通信设备同步管理共享信息的方法和系统。 发送方发送用原始随机数调制的单光子脉冲到接收机，并且通过使用普通光脉冲发送帧脉冲。 比特比较和基础协调由帧脉冲定义的帧执行，由此发送者和接收者分别生成作为文件聚合的筛选的密钥。 筛选的密钥经过文件的纠错，隐私放大和文件共享处理，从而公共密码密钥被单独地同步地存储在发送器和接收器中。 生成的加密密钥分别作为加密密钥和解密密钥进行管理。 新产生的密钥优先放置在具有较小存储量的加密密钥或解密密钥中。

公开(公告)号：US20100088750A1

公开(公告)日：2010-04-08

申请号：US12444880

申请日：2008-08-08

申请人： Ryuichi Okamoto ,  Tohru Nakahara ,  Akihiro Tanaka ,  Shinya Kemi ,  Koji Miura ,  Atsunori Sakurai ,  Tohru Wakabayashi ,  Hiroki Murakami

发明人： Ryuichi Okamoto ,  Tohru Nakahara ,  Akihiro Tanaka ,  Shinya Kemi ,  Koji Miura ,  Atsunori Sakurai ,  Tohru Wakabayashi ,  Hiroki Murakami

IPC分类号： G06F21/00

CPC分类号： G06Q10/10 ,  G06F21/10 ,  G06Q10/06

摘要： A terminal apparatus is provided which can guarantee operation of a use condition bytecode while securing the degree of freedom for a service provider generating the use condition bytecode. A terminal apparatus (300), in which a license (1200) includes a use condition determining logic code (1204) and a version number (1202), includes a license obtainment unit (304) which obtains the license (1200), a use condition verification unit (302) which determines, based on the version number (1202), whether or not the operation of the use condition determining logic code (1204) has been confirmed, a use condition bytecode execution unit (303) which executes the use condition determining logic code (1204) when the operation of the use condition determining logic code (1204) has been determined to have been confirmed, and a content playback unit (306) which playbacks content based on the use condition determining logic code (1204).

摘要翻译： 提供一种终端装置，其可以确保使用条件字节码的操作，同时确保生成使用条件字节码的服务提供者的自由度。 一种许可证（1200）包括使用条件确定逻辑代码（1204）和版本号（1202）的终端装置（300），包括获得许可证的许可证获取单元（1200），使用 条件验证单元（302），其基于版本号（1202）确定是否已经确认了使用条件确定逻辑代码（1204）的操作;使用条件字节码执行单元（303），其执行使用 当确定使用条件确定逻辑代码（1204）的操作已被确定时的条件确定逻辑代码（1204）以及基于使用条件确定逻辑代码（1204）播放内容的内容重放单元（306） 。

公开(公告)号：US07616765B2

公开(公告)日：2009-11-10

申请号：US11261669

申请日：2005-10-31

申请人： Wakako Maeda ,  Akio Tajima ,  Akihiro Tanaka

发明人： Wakako Maeda ,  Akio Tajima ,  Akihiro Tanaka

IPC分类号： H04K1/00 ,  H04L9/00

CPC分类号： H04L9/0852 ,  H04L2209/34

摘要： A sender sends original random-number data to a receiver through a quantum channel. The receiver generates a raw key from information received through the quantum channel and notifies the received information to the sender. The sender performs received-bit comparison and basis reconciliation based on the received information and provisionally shares a sifted key with the receiver. The receiver sends part of its version of the sifted key to the sender, by which an error rate is calculated. The calculated error rate is compared with a predetermined threshold value for bit position synchronization determination. When the calculated error rate is larger, the sender notifies the receiver that bit position synchronization is not established. The receiver reassigns bit numbers to the sifted key, and received-bit comparison and basis reconciliation are performed again. This procedure is repeated until the calculated error rate becomes smaller than the threshold value.

摘要翻译： 发送者通过量子信道向接收者发送原始随机数数据。 接收机通过量子信道接收到的信息生成原始密钥，并将接收到的信息通知发送方。 发送者根据接收到的信息执行接收比特比较和基础协调，并临时与接收者共享筛选密钥。 接收方将其筛选密钥的一部分版本发送给发送方，由此计算错误率。 计算的误差率与用于位位置同步确定的预定阈值进行比较。 当计算出的错误率较大时，发送方通知接收端位位置同步不成立。 接收器将位号重新分配到筛选的密钥，并且再次执行接收比特比较和基础协调。 重复该过程，直到计算的误差率变得小于阈值。

公开(公告)号：US07613396B2

公开(公告)日：2009-11-03

申请号：US11217319

申请日：2005-09-02

申请人： Wakako Maeda ,  Akio Tajima ,  Akihiro Tanaka

发明人： Wakako Maeda ,  Akio Tajima ,  Akihiro Tanaka

IPC分类号： H04J14/02 ,  H04B10/12

CPC分类号： H04B10/70

摘要： In a system where a quantum channel and a classical channel are multiplexed on a single optical transmission line and information is transmitted from a transmitter to a receiver through the quantum channel, the classical channel is inhibited from affecting the quantum channel. To this end, the transmission characteristics of a transmitter-side wavelength multiplexer/demultiplexer for the classical channel, the transmission characteristics of a receiver-side wavelength multiplexer/demultiplexer for the quantum channel, and the optical power of a light source for the classical channel are designed so that crosstalk light due to spontaneous emission light and crosstalk light due to nonlinear optical effects can be suppressed, and the classical channel does not affect the quantum channel.

摘要翻译： 在量子信道和经典信道被复用在单个光传输线上并且信息通过量子信道从发射机发射到接收机的系统中，禁止经典信道影响量子信道。 为此，用于经典信道的发射机侧波长多路复用器/解复用器的传输特性，用于量子信道的接收机侧波长多路复用器/解复用器的传输特性以及用于经典信道的光源的光功率 被设计成可以抑制由于非线性光学效应引起的自发发射光和串扰光的串扰光，并且经典通道不影响量子通道。

公开(公告)号：US20090256437A1

公开(公告)日：2009-10-15

申请号：US12307229

申请日：2007-07-11

申请人： Tetsuya Miura ,  Hirotatsu Ihara ,  Takamasa Takeuchi ,  Masamitsu Senoo ,  Akihiro Tanaka ,  Takafumi Koshida ,  Tomoo Atarashi

发明人： Tetsuya Miura ,  Hirotatsu Ihara ,  Takamasa Takeuchi ,  Masamitsu Senoo ,  Akihiro Tanaka ,  Takafumi Koshida ,  Tomoo Atarashi

IPC分类号： H02K11/00

CPC分类号： H02K16/00 ,  B60L11/005 ,  B60L11/123 ,  B60L11/14 ,  B60L2210/40 ,  B60L2220/50 ,  H02K5/225 ,  Y02T10/6217 ,  Y02T10/641 ,  Y02T10/646 ,  Y02T10/7022 ,  Y02T10/7077 ,  Y02T10/7241

摘要： First and second connection mechanisms electrically connect power cables extending in the same direction to first and second electric motor neighboring to each other in the extending direction of the power cables, respectively. The first connection mechanism of the first electric motor is arranged in a radially outer portion, and the second connection mechanism of the second electric motor is arranged in a space between the electric motors. Since both the connection mechanisms are located on the opposite sides of a joint surface between the first and second casings accommodating the first and second motors, respectively, the first and second connection mechanisms can be components on the first and second casing sides, respectively. This structure can prevent increase in size in a rotation axis direction, and can improve assembly workability for the motors.

摘要翻译： 第一和第二连接机构将在相同方向上延伸的电力电缆分别电连接到电力电缆的延伸方向上彼此相邻的第一和第二电动机。 第一电动机的第一连接机构配置在径向外部，第二电动机的第二连接机构配置在电动机之间的空间内。 由于两个连接机构分别位于容纳第一和第二电动机的第一和第二壳体之间的接合表面的相对侧上，所以第一和第二连接机构可以分别是第一和第二壳体侧面上的部件。 该结构能够防止旋转轴方向的尺寸增大，能够提高电动机的组装作业性。

公开(公告)号：US20090240913A1

公开(公告)日：2009-09-24

申请号：US12067618

申请日：2006-09-07

申请人： Satoshi Obana ,  Akihiro Tanaka

发明人： Satoshi Obana ,  Akihiro Tanaka

IPC分类号： G06F12/08

CPC分类号： H04L9/0662 ,  H04L9/0838 ,  H04L9/0852 ,  H04L2209/34

摘要： An input data enlarging unit (100) derives a first enlargement unit output and a second enlargement unit output that are uniquely specified by input data (103) to output the same. The first enlargement unit output and the second enlargement unit output are elements of output data set B which forms a group. An ε-Δ hash function calculation unit (101) receives as input the first enlargement unit output to calculate an hΔ function which is specified by hash-function-specifying data (104) and an element of the HΔ function set. The function set HΔ is such that the number of h∈H Δ which satisfies h(x)−h(y)=d for an arbitrary element d of the output data set B and two different elements x and y of the output data set B is equal to or smaller than |HΔ|·ε. An adding unit (102) adds together the result of calculation of the function HΔ and the second enlargement unit output to output a result of the addition.

摘要翻译： 输入数据放大单元（100）导出由输入数据（103）唯一指定的第一放大单元输出和第二放大单元输出，以输出它们。 第一放大单元输出和第二放大单元输出是形成组的输出数据组B的元件。 ε-Δ散列函数计算单元（101）接收作为输入的第一放大单元输出，以计算由哈希函数指定数据（104）指定的hDelta函数和HDelta函数集的元素。 函数集HDelta是对于输出数据组B的任意元素d满足h（x）-h（y）= d的h∈HDelta的数量和输出数据集合的两个不同元素x和y的数量 B等于或小于| HDelta | .epsilon。 添加单元（102）将功能HDelta和第二放大单元输出的计算结果相加，输出相加结果。

公开(公告)号：US07580634B2

公开(公告)日：2009-08-25

申请号：US10971047

申请日：2004-10-25

申请人： Takeshi Takeuchi ,  Akio Tajima ,  Shigekazu Harada ,  Akihiro Tanaka ,  Wakako Maeda

发明人： Takeshi Takeuchi ,  Akio Tajima ,  Shigekazu Harada ,  Akihiro Tanaka ,  Wakako Maeda

IPC分类号： H04B10/08

CPC分类号： H04B10/077 ,  H04B10/07955

摘要： A transmitter-receiver having a means for automatically determining the status of transmission medium such as optical fiber, and a means for automatically setting and resetting the transmission rate and/or output power according to the status of the transmission medium, a transmission loss and gain measurement method, and a transmitting-receiving system. A transmitter-receiver comprises at least: an output power controller for controlling the output power of a transmitter; an input power measuring section for measuring the strength of input signals; and an information processor for deriving the loss or gain of a path to change the output power of the transmitter and/or the rate of data transmission according to the derived loss or gain of the path. A transmission loss and gain measurement method applied to a system comprising transmission media and a plurality of the transmitter-receivers connected via the transmission media, comprises the steps of: transmitting information on the output power of a first transmitter-receiver from the first transmitter-receiver to a second transmitter-receiver; measuring reception strength by the second transmitter-receiver when the second transmitter-receiver receives the output power information; reading the output power information by the second transmitter-receiver; and comparing the reception strength with the output power information to calculate a transmission loss or gain by the second transmitter-receiver.

摘要翻译： 具有用于自动确定诸如光纤的传输介质的状态的装置的发射机 - 接收机，以及根据传输介质的状态自动设置和重置传输速率和/或输出功率的装置，传输损耗和增益 测量方法和发送接收系统。 发射机 - 接收机至少包括：用于控制发射机的输出功率的输出功率控制器; 用于测量输入信号的强度的输入功率测量部分; 以及信息处理器，用于根据导出的路径损失或增益导出用于改变发射机的输出功率的路径的损失或增益和/或数据传输速率。 一种应用于包括通过传输介质连接的传输介质和多个发射机 - 接收机的系统的传输损耗和增益测量方法包括以下步骤：从第一发射机 - 接收机发送关于第一发射机 - 接收机的输出功率的信息， 接收机到第二发射机 - 接收机; 当第二发射机 - 接收机接收到输出功率信息时，测量第二发射机 - 接收机的接收强度; 通过第二发射机 - 接收机读取输出功率信息; 以及将接收强度与输出功率信息进行比较，以计算第二发射机 - 接收机的传输损耗或增益。

公开(公告)号：US20080315856A1

公开(公告)日：2008-12-25

申请号：US12142996

申请日：2008-06-20

申请人： Yukiko Takiba ,  Akihiro Tanaka ,  Hiroshi Suzunaga

发明人： Yukiko Takiba ,  Akihiro Tanaka ,  Hiroshi Suzunaga

IPC分类号： G05F3/16

CPC分类号： G05F3/30 ,  H01L27/0207 ,  H01L27/0825

摘要： A bandgap reference voltage generator circuit includes a substrate made of a semiconductor of a first conductivity type, a first transistor formed on the substrate, a second transistor formed on the substrate and having a base commonly connected to the base of the first transistor, a light absorption region formed on the substrate, having a second conductivity type, and connected in parallel between the collector layer of the second transistor and the substrate and a reference voltage output terminal commonly connected to the bases of the first and second transistor. The area of the collector layer of the first transistor is larger than the area of the collector layer of the second transistor.

摘要翻译： 带隙参考电压发生器电路包括由第一导电类型的半导体构成的衬底，形成在衬底上的第一晶体管，形成在衬底上的第二晶体管，并且具有共同连接到第一晶体管的基极的基极， 吸收区形成在基板上，具有第二导电类型并且并联连接在第二晶体管的集电极层和基板之间，基准电压输出端子共同连接到第一和第二晶体管的基极。 第一晶体管的集电极层的面积大于第二晶体管的集电极层的面积。

公开(公告)号：US07463586B2

公开(公告)日：2008-12-09

申请号：US11768801

申请日：2007-06-26

申请人： Akihiro Tanaka ,  Toshiya Mori ,  Hideki Kagemoto ,  Koichiro Yamaguchi

发明人： Akihiro Tanaka ,  Toshiya Mori ,  Hideki Kagemoto ,  Koichiro Yamaguchi

IPC分类号： H04J3/14

CPC分类号： H04N21/26266 ,  H04N21/222 ,  H04N21/23608 ,  H04N21/23614 ,  H04N21/23617 ,  H04N21/4348 ,  H04N21/643 ,  H04N21/8126

摘要： A data transfer apparatus receives from an upper station a data stream that includes a plurality of types of repeat data, each type of repeat data being repeatedly transmitted by the upper station, and transfers the repeat data to a lower station, the data transfer apparatus including a storage unit having a storage area; an extraction unit for extracting the types of repeat data from the received data stream; a writing unit for writing the extracted repeat data to the storage area; a data structure ratio determination unit for determining a ratio between the types of repeat data to be output in a data stream per fixed length of time; and a data output unit for reading the repeat data stored in the storage unit, and outputting the read repeat data at the determined ratio.

摘要翻译： 数据传送装置从上位站接收包括多种类型的重复数据的数据流，每种类型的重复数据由上级站重复发送，并将重复数据传送到下位站，数据传送装置包括 具有存储区域的存储单元; 提取单元，用于从接收到的数据流中提取重复数据的类型; 写入单元，用于将提取的重复数据写入存储区域; 数据结构比确定单元，用于确定每固定时间长度在数据流中输出的重复数据的类型之间的比率; 以及数据输出单元，用于读取存储在存储单元中的重复数据，并以所确定的比率输出读取的重复数据。