Hitachi, Ltd.

Shinichi Tsunoo

Norio Suzuki

Makoto Kayashima

Hiroshi Nakagoe

Hiromi Isokawa

Takuma Nishimura

Yuichi Igarashi

Ryo Nakano

Hirotaka Moribe

Takahiro Ohira

Tomotada Naito

Nobuaki Onodera

A data provision apparatus for providing site data to a service apparatus stores explanatory information for the site data including a specification of the site data, explanatory information of the service including the site data and a specification of the site data required by the service, and a rule for transforming the site data into that required by the service using the site data, the explanatory information of the site data, the explanatory information of the service, and the transformation rule being registered in advance; and refers to the explanatory information of the site data, the explanatory information of the service, and the transformation rule in response to a transfer request of the data from the service apparatus. All pieces of the site data used by the service are transformed into data of the specification required by the service and are transferred to the service apparatus.

Data provision apparatus and data provision method

A network management device manages a wireless multi-hop network; a network configuration management unit that manages communication quality information between wireless devices and between the wireless devices and the gateway; a repeater necessity determination unit that determines whether to add a repeater for each of the wireless devices based on the communication quality information and selects the wireless device that is required to add the repeater based on a determination result; an access point determination unit determines access points for securing a predetermined communication quality for the wireless device selected; and a repeater placement determination unit that determines whether there is a repeater installation location indicating an installation range of the repeater for relaying the wireless device selected and the access point selected by the access point determination unit based on a communication range of the wireless device selected and a communication range of the access point selected.

Communication system and wireless network engineering support method

The present invention efficiently displays in a tree structure form a file operation history. A file storage identifier, an operation identifier, and a count are stored as additional meta-information in an alternate data stream with respect to each file stored in a client terminal file system. The operation identifier manages a number of operations (operation generations). The count manages copy frequencies. This meta-information is also sent to a management apparatus, and used for displaying the file operation history in a tree structure form.

Computer system management method and client computer

The content of operations is identified and an alert is generated to an operation having a high risk of information leakage. An agent monitors, for example, operations performed with respect to a dialogue displayed on a client PC. If a file is selected by an operation performed with respect to the displayed dialogue, the agent assigns an identifier indicating a source for the file to the file. If the file is sent as an attached file, the agent identifies an output destination for the attached file as well as the source for the attached file; and if the output destination for the attached file is an external Web server and the source for the attached file is a mail server, the agent generates an alert by determining that an unauthorized operation has been executed; and then sends the generated alert to a management server.

Unauthorized operation detection system and unauthorized operation detection method

A client computer detects a user operation for transmitting data to a server or a storage device, determines whether the detected user operation is a fraudulent manipulation, and, if the determination is a positive result, performs security processing which is processing related to security of data to be transmitted. If the data is data within a group to which the user belongs and a destination of the data is a server or a storage device outside the group, the determination is a positive result.

Growing community of inventors

Sagamihara, Japan

Shinichi Tsunoo