摘要:
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.
摘要:
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.
摘要:
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.
摘要:
According to the present invention, a file recovery system is provided in which the commands for recovering files such as a historical file are unnecessitated and the recovery system configuration is independent of the host processing system. That is, since the equipment for achieving a file recovery does not have information about the location of the recovery data, information about the content of a file to be recovered is transmitted to a transmission line. The other equipments asynchronously receive the information and judges whether or not a file containing the same content exists in the own system. If its file exists, the content of the file is transmitted to the transmission line. The equipment achieving the file recovery asynchronously receives from the transmission line the file data of files such as a historical file and establishes data consistency by use of the buffered current data and the event number, thereby recovering files such as a historical file.
摘要:
A system for use with communications according to TCP, or a similar protocol, includes a sender host, one or more routers, and a destination host. Each router includes means for generating acknowledgement packets and translating addresses associated with data packets. When a data packet is received by a router, an acknowledgement packet is returned with a source address corresponding to the router and a destination address corresponding to the sender host. The sender host perceives the acknowledgement packet as having been sent by the destination host. As the acknowledgment packet is sent by the router, and not the destination packet is sent by the router, and not the destination host, this system allows acknowledgment packets to be received on a shorter timescale, reducing the effects of a link delay. Although the route between the sender host and the destination host is divided into multiple connections, the hosts perceive a single, conventional connection.
摘要:
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.
摘要:
In a method for testing a program, repeated measurement on branches that are frequently taken is prevented, thereby avoiding unnecessary overhead. An information processing device includes a coverage measurement control program for determining whether the number of times an instruction of a measurement target program has been executed due to execution of the measurement target program is equal to or larger than the maximum allowable number of measurements set for the instruction; and a coverage measurement program for incrementing a value in a field for the instruction by one to indicate the number of times the instruction has been executed, the coverage measurement program being called if the number of times the instruction has been executed is smaller than the maximum allowable number of measurements.
摘要:
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.
摘要:
A joint work support system includes a plurality of terminals mutually connected to one another through a network. Each terminal includes a first data communication means and an operation means. The operation means performs operations to support joint work in both a joint work state, when the terminal is connected to another terminal through the network, and a local state, when the terminal is not connected to another terminal through the network. To operate in the local state, each of the terminals includes recording data creating means, second data communication means and reproduction means.
摘要:
Attribute information of programs developed by processors in a distributed processing system include I/O data for defining I/O operation of the programs, which is given in a program description form. A correlation of the programs is checked based on the content of the attribute information. Program generation information, program content information and program modification information are added to the sharedly developed programs and they are updated in the course of development.