Hitachi, Ltd.

Other

Masato Saito

Tomoichi Ebata

Hiromichi Ito

Takashi Kagei

Yoshihiro Kamata

Michio Suzuki

Yasuhiro Tanaka

Yasuhiko Nagai

Goro Ikeba

Hiroshi Yamada

Yasuo Sato

Shuji Fujino

Eisuke Kuroda

Taichiro Kawahara

Kohsuke Shinnai

Yoshinori Ooba

Shinichi Nakazaki

In a power equipment control system connected, via a communication network, to a system operation server of a power system and a single or a plurality of power equipments for performing power consumption or storage with interconnecting to the power system, to regulate power demand and supply balance of the power equipment, a contribution degree is obtained by preparing a demand plan of subsequent power of said power equipment; transmitting, to said power equipment, information relevant to demand regulation request to said power equipment, received from said system operation server, based on said demand plan; receiving demand regulation result of observation information on the demand regulation performed within said power equipment, based on said demand regulation request; and performing said demand regulation by said power equipment from said demand regulation result.

Power equipment control system

In an internet having a server for providing service, a client for receiving the service, plural proxy servers for standing proxy for an access to the server done by the client, and a proxy server selecting server for noticing an IP (Internet Protocol) corresponding to a domain name of the client in response to an inquiry with the domain name added thereon, the proxy server selecting server receives a request message with the domain name of the server for providing the target service from the client. Then, the proxy server selecting server notifies the client of the IP address of the most approximate server to the client in place of the IP address of the server, based on the physical/logical location information, and if necessary, the periodically obtained load information of the proxy servers. The client recognizes the proxy server of the IP address given thereto as the server for providing the target service and then makes access to the proxy server.

Proxy server selecting server and proxy server

In an internet having a server for providing service, a client for receiving the service, plural proxy servers for standing proxy for an access to the server done by the client, and a proxy server selecting server for noticing an IP (Internet Protocol) corresponding to a domain name of the client in response to an inquiry with the domain name added thereon, the proxy sever selecting server receives a request message with the domain name of the server for providing the target service from the client. Then, the proxy server selecting server notifies the client of the IP address of the most approximate server to the client in place of the IP address of the server, based on the physical/logical location information, and if necessary, the periodically obtained load information of the proxy servers. The client recognizes the proxy server of the IP address given thereto as the server for providing the target service and then makes access to the proxy server.

According to the present invention, when electronic money is sent from a given network to another network, a money change apparatus performs a money change process to change electronic money current on the given network into electronic money current on another network, and therefore when a user of the given network uses a settling process, by managing this money change process, it is possible to manage the interchange of electronic money between each of the users of the given network and each of the users of another network without affecting the working environment of electronic commerce. Electronic money current on LAN is referred to as local electronic money current only on the network. When a terminal NLU connected to LAN sends money to a terminal NWU connected to WAN , GW for controlling the flow of data between LAN and WAN receives local electronic money sent from the terminal NLU , changes the local electronic money into electronic money current on WAN , then sends the electronic money to the terminal NWU , and when a terminal NWU sends money to a terminal NLU , GW receives electronic money sent from the terminal NWU , changes the electronic money into local electronic money and sends the local electronic money to the terminal NLU

Method and apparatus for managing electronic money and storage for storing an electronic money management program

A hierarchical communication network management system is structured by a plurality of agents and sub-managers connected to lower communication networks and an integration manager connected to a higher communication network. Each of the sub-managers functions as an agent to the integration manager and functions as a manager to each agent, so that it becomes possible to employ a Simple Network Management Protocol (SNMP) between each agent and its sub-manager and between a sub-manager and the integration manager.

Hierarchical network management system

In a network management operation system connected via a communication line to a network having a plurality of object instances to be managed, the management information database stores management information of the containment relationship between object instances in the form of table. When an operator designates some object instances and enters a control command for the designated object instances, the management information of the designated object instances is retrieved from the management information database and a containment tree (management information having a containment structure) corresponding to the containment relationship between the designated object instances is generated, respectively within the network management operation system. In accordance with the generated containment tree, a scope pattern of Common Management Information Service (CMIS) of Open Systems Interconnection (OSI) is automatically generated.

Network management operation system and network management operation

In a network management system, information items respectively of connection relationships, containment relationships, and display priority of a plurality of managed object instances (resources) are stored in a memory. According to a predetermined algorithm, there is calculated an evaluated value for display for each of the instances depending on the containment relationship information and display priority to select a limited number of instances representable on a screen. Displayed on the screen is a network layout diagram including icons representing the plural instances thus selected. When the user specifies one of the icons, the specified instance and a number of representable instances selected according to the evaluated values from a group of instances under the specified instance in the containment relationships are displayed in a new network layout diagram on the screen. When a fault occurs in either one of the instances, if an icon of the faulty instance is being displayed on the screen, the color thereof is changed into a second color. If the icon is not displayed on the screen, the color of icons being displayed for instances as high-ranking resources with respect to the faulty instance in the containment relationships is changed into a third color.

Growing community of inventors

Yokohama, Japan

Masato Saito