Nec Corporation

Tomoyoshi Sugawara

Soichiro Araki

Tetsuo Imai

Norihito Fujita

Yoshihiko Suemura

Norito Fujita

Provided is a thin client system that automatically allows two types of user terminals, a network-boot-type user terminal and a screen-transfer-type user terminal, to share the same execution environment. A screen-transfer/network-boot switching system serves as a server function switching device used in the thin client system, including a server function switching section and a terminal process proxy execution section. The server function switching section accepts a connection request from the user terminal, and determines attribute of the user terminal. If the user terminal is the network-boot-type user terminal, the boot image transfer section transfers a boot image to the user terminal. If the user terminal is the screen-transfer-type user terminal, the boot image transfer section transmits a boot image to the terminal process proxy execution section. Moreover, the terminal process proxy execution section transmits screen information to the user terminal.

Server function switching device, method and program, and thin client system and server device

In a distributed processing in which multiple operation transportation methods can be used, a method is proposed which efficiently selects an operation transportation method in accordance with conditions of the distributed system. In view of this, a first computer is provided which includes: a first operation transportation portion which conducts multiple transportation methods that transports, for example, processes to a computer to execute them; a second operation transportation portion; and a selection information storing portion storing information used for selection from the multiple transportation methods. Further, a second computer is provided which includes a first operation receiving portion that conducts operations in accordance with the multiple transportation methods. The first computer includes a transportation request portion which detects information from the selection information storing portion for selecting a transportation method that is operable for the second computer and which selects the first operation transportation portion based on the detection result, and the first operation transportation portion selected by the transportation request portion transports, for example, a process to the first operation receiving portion of the second computer.

Distributed processing system, distributed operation method and computer program

To eliminate interruption of a service used by a user and reset of communication caused by switching of an operating server such as a process migration or the like. On receiving a session migration start request, server/network cooperation control meansissues an operating server-switching control start notification to an operating server switching control means(step S). On receiving the operating server switching control start notification, the operating server switching control meansswitches an operating server. Next, on receiving an operating server switching control completion notification, the server/network cooperation control meanssends a connection destination target network-switching request to a connection control means(step S). The connection control meansswitches the connection destination target network of the user corresponding to a user name whose connection destination target network is to be switched, from a target network including a main server to a switch destination target network including a backup server (step S).

Method of migrating processes between networks and network system thereof

Disclosed is a network system comprising: a plurality of routersandconnected to each other through a network; pseudo redundant configuration setting meansandwhich are connected respectively to the routers and which perform a communication using a redundancy protocol with respective routers; and association control meansconnected to the pseudo redundant configuration setting meansand, wherein when a serveris a backup server and its backup state needs to be maintained, the pseudo redundant configuration setting meansissues a signal for maintaining a standby state to the router, and when servers are switched between a standby state and operating state, the association control meanstransmits a switching instruction for switching between a standby state and operating state to the pseudo redundant configuration setting meansand

System using pseudo redundant configurator to switch network devices between operating and standby states

A method, system and program processing unit for a robot, by which the safety during execution of a program is improved. The program processing unit comprises a program interpreter, a command rejection device and a command execution device. When the program interpreter sends a command in a program to the command rejection device, the command rejection device searches a command rejection rule storage section for a command rejection rule corresponding to the command, and if the rule is detected, retlieves input values from one or more sensors and the source information of the program from a source information storage section, judges command rejection conditions included in the rule based on the sensor information, source information, the command and its parameters, dismisses the command when the conditions are met, and sends the command to the command execution device when the conditions are not met.

Growing community of inventors

Tokyo, Japan

Tomoyoshi Sugawara