公开(公告)号：US20120243683A1

公开(公告)日：2012-09-27

申请号：US13332998

申请日：2011-12-21

申请人： Yoshihiro OBA ,  Yasuyuki Tanaka ,  Shinji Yamanaka

发明人： Yoshihiro OBA ,  Yasuyuki Tanaka ,  Shinji Yamanaka

IPC分类号： H04L9/00

CPC分类号： H04L9/0836

摘要： According to one embodiment, a node that is a root node of a network forming a directed acyclic graph topology, which is composed of plural nodes including the node serving as the root node and having a parent-child relationship among nodes of adjacent hierarchies, includes a generating unit, an encrypting unit, and a transmitting unit. The generating unit generates a group key, and a list indicating a first node to which a distribution of the group key is inhibited. The encrypting unit encrypts the group key so as to be capable of being decrypted by a first child node other than the first node out of the child nodes of the root node. The transmitting unit transmits a first message, including an encrypted group key, which is the group key that is encrypted with respect to the first child node, and the list.

摘要翻译： 根据一个实施例，作为形成有向非循环图拓扑的网络的根节点的节点由包括用作根节点并且在相邻层次的节点之间具有父子关系的多个节点组成，包括 生成单元，加密单元和发送单元。 生成单元生成组密钥，并且指示禁止组密钥的分布的第一节点的列表。 加密单元加密组密钥，以便能够被根节点的子节点之外的除第一节点之外的第一子节点解密。 发送单元发送包括作为相对于第一子节点加密的组密钥的加密组密钥和列表的第一消息。

公开(公告)号：US20120237033A1

公开(公告)日：2012-09-20

申请号：US13233186

申请日：2011-09-15

申请人： Yasuyuki TANAKA ,  Yoshihiro OBA ,  Shinji YAMANAKA

发明人： Yasuyuki TANAKA ,  Yoshihiro OBA ,  Shinji YAMANAKA

IPC分类号： H04W12/06 ,  H04W12/04

CPC分类号： H04W12/04 ,  H04L9/0836 ,  H04L9/0891 ,  H04L63/0442 ,  H04L63/065 ,  H04L63/08 ,  H04L2209/80 ,  H04L2463/062 ,  H04W12/06 ,  H04W84/20

摘要： According to one embodiment, a wireless mesh network includes a plurality of nodes of which one is a root node and two nodes hierarchically adjacent have a parent-child relationship. In a node in the wireless mesh network, an authentication processing unit executes an authentication for network access with the root node when the node joins in the wireless mesh network. A root key setting unit generates a root key as a common key between the root node and the node. A parent-child key setting unit generates a parent-child key as a common key between a parent node and the node, encrypts the parent-child key using the root key, and sends the parent-child key encrypted to the root node. A group key acquisition unit receives a group key encrypted using the parent-child key from the parent node, and decrypts the group key using the parent-child key.

摘要翻译： 根据一个实施例，无线网状网络包括多个节点，其中一个是根节点，并且两个分层相邻的节点具有父子关系。 在无线网状网络中的节点中，当节点加入无线网状网络时，认证处理单元执行与根节点的网络接入认证。 根密钥设置单元生成根密钥作为根节点和节点之间的公共密钥。 父子密钥设置单元生成父子密钥作为父节点和节点之间的公共密钥，使用根密钥加密父子密钥，并将加密的父子密钥发送到根节点。 组密钥获取单元从父节点接收使用父子密钥加密的组密钥，并且使用父子密钥对组密钥进行解密。

公开(公告)号：US20130073852A1

公开(公告)日：2013-03-21

申请号：US13551352

申请日：2012-07-17

申请人： Yoshihiro OBA ,  Mitsuru Kanda ,  Yasuyuki Tanaka ,  Seijiro Yoneyama

发明人： Yoshihiro OBA ,  Mitsuru Kanda ,  Yasuyuki Tanaka ,  Seijiro Yoneyama

IPC分类号： H04L9/32

CPC分类号： H04W12/06 ,  H04L9/0836 ,  H04L9/0866 ,  H04L9/3273 ,  H04L63/061 ,  H04L63/0884 ,  H04L63/123 ,  H04L63/162 ,  H04L67/12 ,  H04W12/04 ,  H04W12/10

摘要： According to an embodiment, a communication apparatus establishes communication with an external apparatus through a higher-level device. The communication apparatus includes a main processor and a key generator. The main processor receives a data authentication request including data to be authenticated, a first key specification, and a message authentication algorithm identifier from the higher-level device. The key generator retains a key hierarchy used by an authentication protocol that is used between the higher-level device and the external apparatus, and to generate a first key by use of the key hierarchy and the first key specification. The main processor generates a message authentication code for the data to be authenticated by use of the message authentication algorithm, which is identified by the message authentication algorithm identifier, and the first key, and transmits a data authentication response including the message authentication code to the higher-level device.

摘要翻译： 根据实施例，通信装置通过较高级别的装置建立与外部装置的通信。 通信装置包括主处理器和密钥发生器。 主处理器从上级设备接收包括要认证的数据的数据认证请求，第一密钥规范和消息认证算法标识符。 密钥生成器保留由上级设备和外部设备之间使用的认证协议使用的密钥层级，并且通过使用密钥层次和第一密钥规范来生成第一密钥。 主处理器通过使用由消息认证算法标识符识别的消息认证算法和第一密钥来生成用于要认证的数据的消息认证码，并将包括消息认证码的数据认证响应发送到 更高级别的设备。

公开(公告)号：US20140246590A1

公开(公告)日：2014-09-04

申请号：US14278844

申请日：2014-05-15

申请人： Toshihiro ISHII ,  Yoshihiro OBA ,  Fumikazu HOSHI ,  Satoru SUGAWARA

发明人： Toshihiro ISHII ,  Yoshihiro OBA ,  Fumikazu HOSHI ,  Satoru SUGAWARA

IPC分类号： G01N21/47

CPC分类号： G01N21/4738 ,  G01N21/21

摘要： A moisture sensor for detecting moisture content of an object includes a light source to emit light having an infrared wavelength that is absorbed by water; an optical system to receive the light from the light source and output linearly polarized light having a first polarization direction in a direction toward the object, and to receive light scattered from the object and output linearly polarized light having a second polarization direction perpendicular to the first polarization direction in another direction other than the direction toward the object; and a photodetector to receive the linearly polarized light having the second polarization direction output from the optical system.

摘要翻译： 用于检测物体的水分含量的湿度传感器包括发射具有被水吸收的红外波长的光的光源; 光学系统，用于接收来自光源的光，并且在朝向物体的方向上输出具有第一偏振方向的线偏振光，并且接收从物体散射的光，并输出具有与第一偏振方向垂直的第二偏振方向的线偏振光 朝向物体的方向以外的另一方向的偏振方向; 以及光电检测器，用于接收从光学系统输出的具有第二偏振方向的线偏振光。

公开(公告)号：US20080175393A1

公开(公告)日：2008-07-24

申请号：US11972450

申请日：2008-01-10

申请人： Yoshihiro OBA ,  Subir DAS

发明人： Yoshihiro OBA ,  Subir DAS

IPC分类号： H04L9/08 ,  H04L9/32

CPC分类号： H04W12/06 ,  H04L63/062 ,  H04L63/0807 ,  H04L63/162 ,  H04W8/005 ,  H04W12/04 ,  H04W36/005 ,  H04W36/12

摘要： A media-independent handover key management architecture is disclosed that uses Kerberos for secure key distribution among a server, an authenticator, and a mobile node. In the preferred embodiments, signaling for key distribution is based on re-keying and is decoupled from re-authentication that requires EAP (Extensible Authentication Protocol) and AAA (Authentication, Authorization and Accounting) signaling similar to initial network access authentication. In this framework, the mobile node is able to obtain master session keys required for dynamically establishing the security associations with a set of authenticators without communicating with them before handover. By separating re-key operation from re-authentication, the proposed architecture is more optimized for a proactive mode of operation. It can also be optimized for reactive mode of operation by reversing the key distribution roles between the mobile node and the target access node.

摘要翻译： 公开了一种媒体独立的切换密钥管理架构，其使用Kerberos在服务器，认证器和移动节点之间进行安全密钥分发。 在优选实施例中，用于密钥分发的信令基于重新键入，并且与需要与初始网络接入认证相似的EAP（可扩展认证协议）和AAA（认证，授权和计费）信令的再认证解耦。 在该框架中，移动节点能够获得主动会话密钥，用于在切换之前与一组认证者动态建立安全关联，而不与其进行通信。 通过将重新键入操作与重新认证分离，所提出的架构针对主动操作模式进行了更优化。 还可以通过反转移动节点和目标接入节点之间的密钥分发角色来优化用于反应的操作模式。

公开(公告)号：US20170261903A1

公开(公告)日：2017-09-14

申请号：US15600191

申请日：2017-05-19

申请人： Toshihiro ISHII ,  Yoshihiro OBA ,  Fumikazu HOSHI ,  Satoru SUGAWARA

发明人： Toshihiro ISHII ,  Yoshihiro OBA ,  Fumikazu HOSHI ,  Satoru SUGAWARA

IPC分类号： G03G15/00

CPC分类号： G03G15/5062 ,  G03G15/5025 ,  G03G15/5029 ,  G03G2215/00738 ,  G03G2215/00751

摘要： An optical sensor includes a light source; and an optical detector detecting intensity of light that is reflected by a recording medium, the light from the light source and irradiated onto the recording medium. Further, when an incident angle of the light incident to the recording medium from the light source relative to a normal line of the recording medium is given as θ1, a formula 75°≦θ1≦85° is satisfied.

公开(公告)号：US20170003266A1

公开(公告)日：2017-01-05

申请号：US15266854

申请日：2016-09-15

申请人： Kazuma GOTO ,  Fumikazu HOSHI ,  Yoshihiro OBA

发明人： Kazuma GOTO ,  Fumikazu HOSHI ,  Yoshihiro OBA

IPC分类号： G01N33/34 ,  G01B11/06 ,  G01N21/21

CPC分类号： G01N33/346 ,  G01B11/06 ,  G01B11/0691 ,  G01N21/21 ,  G01N21/86 ,  G01N2021/8663 ,  G01N2201/06113 ,  G03G15/5029 ,  G03G2215/00616 ,  G03G2215/00738 ,  G03G2215/00751 ,  G03G2215/0132

摘要： An optical sensor including an abutment part configured to abut one edge of an object to be measured, a wall extending along a side of the object to be measured and having a first opening to pass light emitted to the object to be measured, and a first concave portion formed between the first opening and the abutment part on a side of the wall to position the object to be measured. A paper-type discrimination device including the optical sensor, and a controller configured to discriminate a paper type of the object using the reflection light from the object measured by the optical sensor. An image forming apparatus including the optical sensor or the paper-type discrimination device.

摘要翻译： 一种光学传感器，包括：被配置为邻接被测量物体的一个边缘的邻接部件，沿被测量物体的一侧延伸的壁，并且具有第一开口以使发射到被测量物体的光通过; 在壁的一侧形成在第一开口和抵接部之间的凹部，以定位被测量物体。 包括光学传感器的纸张类型识别装置以及被配置为使用来自由该光学传感器测量的物体的反射光来辨别物体的纸张类型的控制器。 一种图像形成装置，包括光学传感器或纸张类型识别装置。

公开(公告)号：US20160209794A1

公开(公告)日：2016-07-21

申请号：US15001852

申请日：2016-01-20

申请人： Yoshihiro OBA ,  Fumikazu HOSHI ,  Kazuma GOTO ,  Yoshihiro MlSAKA

发明人： Yoshihiro OBA ,  Fumikazu HOSHI ,  Kazuma GOTO ,  Yoshihiro MlSAKA

IPC分类号： G03G15/00 ,  H04N1/06 ,  G01N21/21 ,  H04N1/00

CPC分类号： G03G15/5029 ,  G01N21/21 ,  G03G2215/00616 ,  G03G2215/00751 ,  G03G2215/0132 ,  H04N1/00204 ,  H04N1/0032 ,  H04N1/06

摘要： An optical sensor including an irradiation system including an irradiation system including a light source unit having a light source, the irradiation system configured to emit a linearly polarized light of a first polarization direction onto a surface of an object, a polarizing optical element disposed on an optical path of the light that is emitted from the irradiation system and reflected by diffuse reflection from an incident plane of the object and configured to separate a linearly polarized light component of a second polarization direction, a first photodetector configured to receive the linearly polarized light component of the second polarization direction separated by the polarizing optical element, and a housing supporting the irradiation system, the polarizing optical element, and the first photodetector, where the light source unit is fixed to the housing in a light emitting direction of the light source unit via space.

摘要翻译： 一种光学传感器，包括具有照射系统的照射系统，所述照射系统包括具有光源的光源单元，所述照射系统被配置为将第一偏振方向的线偏振光发射到物体的表面上;偏振光学元件， 从照射系统发射并由物体的入射面漫反射反射并被构造成分离第二偏振方向的线性偏振光分量的光的光路;第一光电检测器，被配置为接收线偏振光分量 以及支撑所述照射系统的壳体，所述偏振光学元件和所述第一光电检测器，其中所述光源单元沿所述光源单元的发光方向固定到所述壳体 通过空间。

公开(公告)号：US20240125691A1

公开(公告)日：2024-04-18

申请号：US18277803

申请日：2022-03-04

申请人： Yoshihiro OBA ,  Ryosuke KASAHARA ,  Toshihide SASAKI ,  Yoshio WADA

发明人： Yoshihiro OBA ,  Ryosuke KASAHARA ,  Toshihide SASAKI ,  Yoshio WADA

IPC分类号： G01N21/15 ,  G01N21/552

CPC分类号： G01N21/15 ,  G01N21/552 ,  G01N2021/151 ,  G01N2021/152 ,  G01N2021/157 ,  G01N2201/12707

摘要： A biological information measuring technique with improved reliability is proposed. A method of measuring biological information using an optical element with a totally reflecting surface, which is to be brought into contact with an object to be observed, is provided. The method includes, after the optical element has been in contact with the object to be observed, acquiring an absorbance at the totally reflecting surface in a state where the optical element is not in contact with the object to be observed, and determining by an information processing apparatus whether the object to be observed needs to be cleaned, based on the absorbance.

公开(公告)号：US20220386875A1

公开(公告)日：2022-12-08

申请号：US17771026

申请日：2020-10-23

申请人： Yoshihiro OBA ,  Ryosuke KASAHARA ,  Yoshio WADA ,  Toshihide SASAKI

发明人： Yoshihiro OBA ,  Ryosuke KASAHARA ,  Yoshio WADA ,  Toshihide SASAKI

IPC分类号： A61B5/00

摘要： A measuring apparatus (100a, 1a) includes a light source (110) configured to emit probe light; a total reflection member (16) in contact with a to-be-measured object and configured to cause total reflection of the probe light that is incident; a light intensity detector (17) configured to detect light intensity of the probe light exiting from the total reflection member (16); an output unit (2) configured to output a measurement value obtained on the basis of the light intensity; a first support (31) supporting the light source (110) and the light intensity detector (17); and a second support (32) provided to the first support (31), detachable from the first support (31), and supporting the total reflection member (16).