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    • 11. 发明授权
    • Data converter and recording medium on which program for executing data conversion is recorded
    • 数据变换装置和记录介质,其上记录有用于实施该程序的程序
    • US06769063B1
    • 2004-07-27
    • US09600955
    • 2000-09-14
    • Masayuki KandaYouichi TakashimaKazumaro AokiHiroki UedaKazuo OhtaTsutomu Matsumoto
    • Masayuki KandaYouichi TakashimaKazumaro AokiHiroki UedaKazuo OhtaTsutomu Matsumoto
    • H04K100
    • H04L9/002H04L9/0625H04L2209/12H04L2209/24
    • A plurality of round processing parts (38) are provided each of which contains a nonlinear function part (304), and each nonlinear function part (304) comprises: a first key-dependent linear transformation part (341) which performs a linear transformation based on a subkey; a splitting part (342) which splits the output from the first key-dependent linear transformation part into n pieces of subdata; a first nonlinear transformation part (343) which nonlinearly transforms those pieces of subdata, respectively; a second key-dependent linear transformation part (344) which linearly transforms those nonlinearly transformed outputs based on a subkey and outputs n pieces of transformed subdata; a second nonlinear transformation part (345) which nonlinearly transforms those transformed subdata; and a combining part (346) which combines the nonlinearly transformed outputs. An n×n matrix, which represents the linear transformation in the second key-dependent linear transformation part (344), is formed by n vectors whose Hamming weights are equal to or larger than T−1 for a security threshold T, thereby increasing the invulnerability against differential cryptanalysis and linear cryptanalysis.
    • 提供了多个圆形处理部件(38),每个圆形处理部件(38)都包含非线性功能部件(304),并且每个非线性功能部件(304)包括:第一按键相关线性变换部件(341),其执行基于线性变换 在一个子项上 分割部分(342),其将来自第一密钥相关线性变换部分的输出分割成n个子数据; 分别对这些子数据进行非线性变换的第一非线性变换部分(343) 第二按键相关线性变换部分(344),其基于子键线性地变换那些非线性变换的输出并输出n个变换的子数据; 第二非线性变换部分(345),其非线性地变换那些变换的子数据; 以及组合非线性变换输出的组合部分(346)。 代表第二密钥相关线性变换部分(344)中的线性变换的n×n矩阵由安全阈值T的汉明权重等于或大于T-1的n个向量形成,从而增加了对于 差分密码分析和线性密码分析。
    • 14. 发明授权
    • Angle detection device and torque sensor incorporating angle detection device
    • 角度检测装置和扭矩传感器结合角度检测装置
    • US06948382B2
    • 2005-09-27
    • US10721508
    • 2003-11-26
    • Atsuo SakaiJiro NakanoTsutomu Matsumoto
    • Atsuo SakaiJiro NakanoTsutomu Matsumoto
    • G01L3/10B62D5/04B62D15/02G01B7/00G01B7/30G01D5/20G01D5/244G01D5/245G01L5/22G01L3/02
    • B62D15/0215B62D6/10G01D5/2073G01D5/2448G01L5/221
    • An angle detection device that accurately detects a rotational angle even if the ratio of an detection voltage relative to an excitation voltage of a resolver fluctuates. The angle detection device includes an angle detector and a controller connected to the angle detector. The angle detector includes an excitation coil, which is arranged on a predetermined rotary shaft and supplied with excitation voltage, and a pair of detection coils. Each detection coil is arranged near the excitation coil to induce detection voltage when excitation voltage excites the excitation coil. The detection voltages of the detection coils have different phases. A controller calculates the rotational angle of the excitation coil with the detection voltages induced to the detection coils. Further, the controller includes a correction unit for correcting the amplitude of the excitation voltage to maintain each of the induced detection voltages at a predetermined value.
    • 即使检测电压相对于分解器的激励电压的比率发生波动,也能够准确地检测旋转角度的角度检测装置。 角度检测装置包括角度检测器和连接到角度检测器的控制器。 角度检测器包括布置在预定旋转轴上并被提供激励电压的励磁线圈和一对检测线圈。 每个检测线圈布置在励磁线圈附近,以在励磁电压激励励磁线圈时引发检测电压。 检测线圈的检测电压具有不同的相位。 控制器利用感应到检测线圈的检测电压来计算励磁线圈的旋转角度。 此外,控制器包括用于校正激励电压的振幅以将每个感应检测电压保持在预定值的校正单元。
    • 17. 发明授权
    • Process of producing 2-cyano-4-oxo-4H-benzopyran compounds
    • 制备2-氰基-4-氧代-4H-苯并吡喃化合物的方法
    • US5659051A
    • 1997-08-19
    • US273119
    • 1994-07-11
    • Takayuki HigashiiHideki UshioYukari FujimotoTsutomu MatsumotoMasayoshi MinaiKatsuichi YasunagaHiroshi SogabeTakahiro Kotera
    • Takayuki HigashiiHideki UshioYukari FujimotoTsutomu MatsumotoMasayoshi MinaiKatsuichi YasunagaHiroshi SogabeTakahiro Kotera
    • C07D311/24
    • C07D311/24
    • There is disclosed a process of producing a 2-cyano-4-oxo-4H-benzopyran compound of the general formula (2): ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, halogen, hydroxy, C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 alkoxy, nitro or a group of the RCONH wherein R is C.sub.1 -C.sub.20 alkyl, phenyl, phenyl-substituted (C.sub.1 -C.sub.20) alkyl, phenyl (C.sub.1 -C.sub.20)alkoxyphenyl or (C.sub.1 -C.sub.20) alkoxyphenyl. This production process is characterized in that a carboxamide of the general formula (1): ##STR2## wherein R.sup.1 and R.sup.2 are each as defined above, is reacted with a dehydrating agent in the presence of a pyridine compound of the general formula (4): ##STR3## wherein A.sup.1 and A.sup.2 are independently hydrogen or C.sub.1 -C.sub.5 alkyl. If the final product cannot be obtained as crystals having good filtration properties by ordinary treatments, a novel technique as disclosed herein can provide such crystals by dissolving the reaction product in an organic solvent insoluble or slightly soluble in water; pouring the resultant solution into water; and removing the organic solvent by distillation with stirring to effect the crystallization of the final product.
    • 公开了通式(2)的2-氰基-4-氧代-4H-苯并吡喃化合物的制备方法:其中R 1和R 2独立地是氢,卤素,羟基,C 1 -C 5烷基 硝基或其中R为C 1 -C 20烷基,苯基,苯基取代的(C 1 -C 20)烷基,苯基(C 1 -C 20)烷氧基苯基或(C 1 -C 20)烷氧基苯基)的RCONH基团。 该制造方法的特征在于通式(1)的羧酰胺:其中R 1和R 2各自如上所定义,与脱水剂在通式(Ⅴ)的吡啶化合物存在下反应, (4):其中A1和A2独立地为氢或C1-C5烷基。 如果通过常规处理不能获得具有良好过滤性能的结晶的最终产品,则本文公开的新技术可以通过将反应产物溶解在不溶或微溶于水的有机溶剂中来提供这种晶体; 将所得溶液倒入水中; 并在搅拌下通过蒸馏除去有机溶剂以实现最终产物的结晶。
    • 20. 发明授权
    • Data distribution system
    • 数据分配系统
    • US07308583B2
    • 2007-12-11
    • US10348956
    • 2003-01-23
    • Natsume MatsuzakiToshihisa NakanoTsutomu Matsumoto
    • Natsume MatsuzakiToshihisa NakanoTsutomu Matsumoto
    • G06F21/00
    • H04L9/0836H04L2209/60
    • Each of a plurality of contents supply systems connected to a single user apparatus uses a group management method that employs flexible and unique tree structures. A manager in each contents supply system uses a system apparatus key distributed by a key management organization to generate a public list that corresponds to a unique tree structure, and releases the public list when the contents supply system is constructed. The user apparatus stores only an apparatus key corresponding to a leaf of the tree structure. Using the public list, which is released via a web page, package media or the like, the user apparatus reconstructs the tree sequentially from the leaf up, and derives a node key corresponding to the user apparatus. The user apparatus then decrypts an encrypted content using the derived node key.
    • 连接到单个用户装置的多个内容供应系统中的每一个使用采用灵活且唯一的树结构的组管理方法。 每个内容供应系统中的经理使用由密钥管理组织分发的系统设备密钥来生成对应于唯一树结构的公共列表,并且在构建内容供应系统时释放公共列表。 用户装置仅存储与树结构的叶片相对应的装置密钥。 使用通过网页发布的公开列表,包装媒体等,用户装置从叶上顺序重建树,并且导出与用户装置相对应的节点密钥。 然后,用户装置使用导出的节点密钥解密加密的内容。