Abstract: A sender of a message can transmit a message to an unspecified user merely by specifying a condition of space without specifying a recipient of the message, using an information processing terminal transmitting a message not with a user address to specify a user but with an area address (a condition of space) to specify an area within an electric wave reachable range of a radio base station; and a server converting the area address to a user address which specifies a PHS terminal currently located in the area represented by said area address and transmitting the message with a converted address to a switching equipment.

Abstract: A technique for performing message communications while assigning a space and respective time periods or time points at present, in past and in future is disclosed. A space-time object intercepts a message. Alternatively, this object per se executes the processing for immediately transmitting a message to a target object under management with relevancy thereto, for retaining the message by a future time point assigned, or for preparing and sending a message for searching logs in the past, thereby to realize the space-time communications.

Abstract: A GPS signal transmitter configured with a reduced number of components and achieving low cost, space saving, and low power is provided. A GPS signal transmitter of the present invention includes: a crystal oscillator; a carrier wave generator that outputs a first carrier wave and a second carrier wave whose phase is inverted to the phase of the first carrier wave, using a clock output by the crystal oscillator; a microcomputer that is driven with the clock output by the crystal oscillator and outputs a control signal based on a C/A code which is a pseudo random code; a switch that switches over between the first carrier wave and the second carrier wave according to the control signal from the microcomputer and generates a modulation wave; and an antenna that transmits the modulation wave by radio.

Abstract: In a positioning system comprising a position information transmitter that transmits a position information signal containing position information indicative of a position as a signal compatible with a satellite positioning signal transmitted from an artificial satellite and a communication terminal that when receiving the satellite positioning signal, finds a current position of the communication terminal by finding a position of the artificial satellite and that when receiving the position information signal, finds a current position of the communication terminal based on the position information, the position information transmitter transmits the position information signal containing a boundary flag that determines which of the satellite positioning signal or the position information signal each of correlators of the communication terminal is to receive, and the communication terminal sets which of the satellite positioning signal or the position information signal each of the correlators is to receive ba

Abstract: One objective of the present invention is to determine a location for a relay terminal in a radio network, without preparatory surveying a radio status and to arrange the relay terminal at the location. Another objective is to provide a method for retrieving the arranged relay terminal. When a relay terminal is to be arranged, the relay terminal transmits a survey packet to examine the quality of communication with a communication terminal or other relay terminal. Where a location is appropriate, the relay terminal gives a notice. The arranged terminal relays communication. Further, when the relay terminal is to be retrieved, the relay terminal carried by a user transmits a retrieval packet to the arranged relay terminal, which notifies the user of its presence by light, sounds, or returning a packet. In this manner, a single relay terminal provides functions of arrangement, relay and retrieval.

Abstract: A technique for performing message communications while assigning a space and respective time periods or time points at present, in past and in future is disclosed. A space-time object intercepts a message. Alternatively, this object per se executes the processing for immediately transmitting a message to a target object under management with relevancy thereto, for retaining the message by a future time point assigned, or for preparing and sending a message for searching logs in the past, thereby to realize the space-time communications.

Abstract: A sender of a message can transmit a message to an unspecified user merely by specifying a condition of space without specifying a recipient of the message, using an information processing terminal transmitting a message not with a user address to specify a user but with an area address (a condition of space) to specify an area within an electric wave reachable range of a radio base station; and a server converting the area address to a user address which specifies a PHS terminal currently located in the area represented by said area address and transmitting the message with a converted address to a switching equipment.

Abstract: A sender of a message can transmit a message to an unspecified user merely by specifying a condition of space without specifying a recipient of the message, using an information processing terminal transmitting a message not with a user address to specify a user but with an area address (a condition of space) to specify an area within an electric wave reachable range of a radio base station; and a server converting the area address to a user address which specifies a PHS terminal currently located in the area represented by said area address and transmitting the message with a converted address to a switching equipment.

Abstract: A data distribution control system is provided, to which a terminal owned by a user, a plurality of computers for transmitting/receiving data, and a control apparatus for controlling data transmitted/received between the computers and the terminal are connected; in which the terminal-transmits first data to the control apparatus; when the control apparatus receives the first data, the control apparatus selects such a computer related to the terminal from the plurality of computers based upon the first data and-second data which includes attribute information previously registered in the control apparatus; the control apparatus transmits third data which contains positional information of the terminal and attribute information of the user with respect to the selected computer; and when the selected computer receives the third data, the selected computer transmits fourth data in order to call the user with respect to the terminal.

Abstract: According to the invention, techniques for controlling the quality of each communication service in a network automatically according to measured information of network traffic are provided. In a representative embodiment, a network measurement controlling system is provided according to the present invention, which comprises a control server, a router, and a meter connected to a network. The meter receives packets from a network and measures the number of packets, and the like, according to preset measurement rules, and transfers measured data to a control server. The control server holds control rules including its control policy for assuring the quality of each communication service, analyzes measured data transferred from the meter, and transmits control commands. The router controls the QoS automatically in real time according to the status of the network by receiving control commands and controlling communication service quality.

Abstract: A sender of a message can transmit a message to an unspecified user merely by specifying a condition of space without specifying a recipient of the message, using an information processing terminal transmitting a message not with a user address to specify a user but with an area address (a condition of space) to specify an area within an electric wave reachable range of a radio base station; and a server converting the area address to a user address which specifies a PHS terminal currently located in the area represented by said area address and transmitting the message with a converted address to a switching equipment.

Abstract: A sender of a message can transmit a message to an unspecified user merely by specifying a condition of space without specifying a recipient of the message, using an information processing terminal transmitting a message not with a user address to specify a user but with an area address (a condition of space) to specify an area within an electric wave reachable range of a radio base station; and a server converting the area address to a user address which specifies a PHS terminal currently located in the area represented by said area address and transmitting the message with a converted address to a switching equipment.

Abstract: A remote management system includes a managed device and a management device connected via a network, where events occurring in the managed device are managed via an event system scheme which can be adapted to a number of managed devices. A management module in the managed device detects an event occurring in the managed device and locates one or more enquiry destinations corresponding to the event, in an event enquiry destination table. An enquiry destination is assigned in cases where one or more enquiry destinations corresponding to the event identifier have not been defined in the event enquiry destination table. The management module makes an enquiry by sending an identifier for the event to the management device. Enquiries are made simultaneously or consecutively to the one or more enquiry destinations.

Abstract: 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.

Abstract: One objective of the present invention is to determine a location for a relay terminal in a radio network, without preparatory surveying a radio status, and to arrange the relay terminal at the location. Another objective is to provide a method for retrieving the arranged relay terminal. When a relay terminal is to be arranged, the relay terminal transmits a survey packet to examine the quality of communication with a communication terminal or other relay terminal. Wherer a location is appropriate, the relay terminal gives a notice. The arranged terminal relays communication. Further, when the relay terminal is to be retrieved, the relay terminal carried by a user transmits a retrieval packet to the arranged relay terminal, which notifies the user of its presence by light, sounds, or returning a packet. In this manner, a single relay terminal provides functions of arrangement, relay and retrieval.

Abstract: A key of a building and a tool may be required for responding to various incidents that occur in targets to be processed. The maintenance engineer closest to the target mat not carry the key and tool. Optimum selection of the maintenance engineer cannot be achieved with current locations of the maintenance engineer candidates and of the target. Location information on a key and tool required for processing an incident that occurs in a target to be processed is managed. Additionally, when at least one maintenance engineer who processes the incident is selected, in accordance with a predetermined rule that location information on the maintenance engineer candidates, on the target, and on the key and tool required for the process request should be considered to select at least one maintenance engineer who processes the incident, the maintenance engineer is selected.

Abstract: A network system having a plurality of interconnected networks each having a policy server. The policy server sets a quality-guaranteed path in the network according to a policy held in the policy server. The policy server includes a policy holding unit to hold a policy defining a quality that can be guaranteed in its own network, a policy publicizing unit to make public the policy held in the policy holding unit to the policy servers of other networks, a guaranteed quality calculation unit to calculate a quality that can be guaranteed for the path between the local network and the other network, and a quality-guaranteed path setting unit to provide a quality-guaranteed path.

Abstract: A network system having a plurality of interconnected networks each having a policy server. The policy server sets a quality-guaranteed path in the network according to a policy held in the policy server.

Abstract: In order to allow efficient use of bandwidth in communication paths in a surveillance system, the surveillance system has an operation unit which assigns fixed bandwidths to each of the communications taking place between camera nodes, which transfer image data at a uniform rate, and monitor nodes. A fixed bandwidth is assigned to, all communications taking place between the operation unit and sensor nodes, which generate alarm information at a non-uniform rate. If there is an increase in network traffic, bandwidth allocations, for communication between the camera nodes and the monitor nodes are reassigned so that bandwidth for these communications is reduced. The camera nodes use the bandwidth assigned to the camera nodes to transfer image data. The sensor nodes transfer alarm information using any bandwidth.

Abstract: In order to allow efficient use of bandwidth in communication paths in a surveillance system, the surveillance system has an operation unit which assigns fixed bandwidths to each of the communications taking place between camera nodes, which transfer image data at a uniform rate, and monitor nodes. A fixed bandwidth is assigned to, all communications taking place between the operation unit and sensor nodes, which generate alarm information at a non-uniform rate. If there is an increase in network traffic, bandwidth allocations, for communication between the camera nodes and the monitor nodes are reassigned so that bandwidth for these communications is reduced. The camera nodes use the bandwidth assigned to the camera nodes to transfer image data. The sensor nodes transfer alarm information using any bandwidth.