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    • 39. 发明申请
    • FIELD DEVICE
    • 现场设备
    • US20080320137A1
    • 2008-12-25
    • US12141385
    • 2008-06-18
    • Kazuyuki ITOTakeshi Ohno
    • Kazuyuki ITOTakeshi Ohno
    • G06F15/173
    • H04L29/12783H04L61/35H04L67/10H04L67/12
    • Disclosed is a field device which constitutes a plurality of distributed systems to perform a data communication with another field device on a network. The field device includes: an application execution section to execute a distributed application based on each distributed system; a storage section to store setting information on virtual communication addresses allocated to each field device constituting the plurality of distributed systems for each distributed system; and a control section to determine whether a requested data communication is in a same distributed system based on the stored setting information on the virtual communication addresses when the data communication is requested by the application execution section. If the data communication is in the same distributed system, the control section notifies a management section of a virtual communication address of a destination device, and requests the management section to perform the data communication with the destination device.
    • 公开了一种现场设备,其构成用于与网络上的另一个现场设备进行数据通信的多个分布式系统。 现场设备包括:应用执行部分,用于基于每个分布式系统执行分布式应用; 存储部分,用于存储分配给每个分布式系统的构成多个分散式系统的每个现场设备的虚拟通信地址的设置信息; 以及控制部分,用于当应用执行部件请求数据通信时,基于存储的关于虚拟通信地址的设置信息来确定所请求的数据通信是否处于相同的分布式系统中。 如果数据通信在相同的分布式系统中,则控制部分通知管理部分目的设备的虚拟通信地址,并请求管理部分与目的设备进行数据通信。
    • 40. 发明申请
    • Data encryption/decryption method and monitoring system
    • 数据加密/解密方法和监控系统
    • US20060191009A1
    • 2006-08-24
    • US11301380
    • 2005-12-12
    • Kazuyuki ItoKazunori Miyazawa
    • Kazuyuki ItoKazunori Miyazawa
    • G06F12/14
    • H04L9/083H04L2209/60
    • A monitoring system has a distribution apparatus which encrypts continuous data and distributes the encrypted continuous data via a network, a reproduction apparatus which decrypts the encrypted data distributed via the network to reproduce the continuous data, and a key management apparatus which has a key management database. The distribution apparatus obtains a key number correlated with the distribution apparatus and key information correlated with the key number from the key management apparatus, encrypts data with using the obtained key information, and distributes the encrypted data with the obtained key number. The reproduction apparatus transmits the key number appended to the encrypted data to the key management apparatus, obtains key information correlated with the transmitted key number, and decrypts the encrypted data with using the obtained key information.
    • 监视系统具有经由网络加密连续数据并分发加密的连续数据的分发装置,对通过网络分发的加密数据进行解密以再现连续数据的再现装置,以及具有密钥管理数据库的密钥管理装置 。 分发装置从密钥管理装置获得与分发装置相关的密钥号码和与密钥号码相关的密钥信息,并使用获得的密钥信息对数据进行加密,并使用获得的密钥号码分发加密数据。 再现装置将附加到加密数据的密钥号码发送给密钥管理装置,获得与发送的密钥号码相关的密钥信息,并使用获得的密钥信息对加密数据进行解密。