Network Computer

Abstract: Information systems based on the cloud computing model and peer-to-peer (P2P) model are now getting popular. In the cloud computing model, a cloud of servers support thin clients with various types of service like Web pages and databases. On the other hand, every computer is peer and there is no centralized coordinator in the P2P model. It is getting more significant to discuss how to reduce the total electric power consumption of computers in information systems to realize eco-society. In this paper, we consider a Web type of application on P2P overlay networks. A model shows how much server peer consumes electric power to performWeb requests from client peers. Here we are creating VM migration to consolidate the server utilization. An algorithm is used for a client peer to select a server peer in a collection of server peers so that the total power consumption can be reduced. Lastly, we evaluate the algorithms in terms of the total power consumption and throughput compared with traditional round robin algorithm.

Abstract: Network computer is an interactive device in thin-client computing environment, and studying the behavior of typical applications on this platform is important to the microprocessor design and system development. Based on PKUnity network computer platform, this paper analyzes the d-TLB miss rate and performance penalty of many typical applications under different d-TLB structures and page sizes. The experiment results explain the advantage of TLB design in PKUnity SoC which satisfies the requirement of lower power and low complexity.

Abstract: PROBLEM TO BE SOLVED: To improve the security of a network system. SOLUTION: In this method for certifying the user of a network system, a certification card 15 is inserted into a network computer client 11, and a password A is inputted so that the user can be certified. Then, the user inputs a different password B, and the inputted password B and the user name read from the certification card 15 are transmitted to a server 13 designated by the server name recorded in the certification card 15. The server 13 obtains a password corresponding to the user name from a data base 14, and judges whether or not the obtained password is made coincident with the password B inputted by the user, and applies the permission of log-in.

Abstract: PROBLEM TO BE SOLVED: To reduce costs for client introduction and to operate message transmission between terminals without interposing any server. SOLUTION: This system has no hard disk at its main body, but provided with a network computer 1 on which no OS(operating system) or application is loaded before start and a server 3 which transmits the OS and a WWW browser to the network computer 1 at the time of starting the network computer 1 and subsequently transmits a Java applet through a WWW server to the network computer.