Sumitomo Electric Industries, Limited

Hitachi, Ltd.

Other

Renesas Electronics Corporation

Sumitomo Chemical Company, Limited

Clarion Co

Hitachi Global Storage Technologies Japan, Ltd.

Hitachi Video and Information System, Inc.

Sumitomo Electric Industries, Co.

Takatoshi Kato

Eisuke Sasaoka

Masayuki Nishimura

Masaaki Hirano

Yoshiaki Terasawa

Shigeru Tanaka

Masashi Onishi

Shinji Ishikawa

Takashi Tsunehiro

Yuji Kubo

Yuji Takahashi

Yoshinori Yamamoto

Takashi Fujii

Makoto Kayashima

Kohei Kobayashi

Takashi Nara

Takushi Nishiya

Kazushi Nakagawa

Kazuhiro Okamoto

Mitsuomi Hada

Morio Watanabe

Shinjiro Hagihara

Terumi Takashi

Nagamasa Mizushima

Toshiaki Okuno

Hiroshi Ide

Katsuya Nagayama

Akira Urano

Tomoyuki Yokokawa

Yoshiyuki Suetsugu

Shintaro Suzumura

Yoshio Yokoyama

Hideyuki Yamakawa

Keiichiro Fukuda

Fumiyoshi Ohkubo

Kiichiro Kawasaki

Yosuke Yamazaki

Nobuaki Nakai

Noriko Iwata

Akira Fujibayashi

Naoto Matsunami

Hiroshi Kimura

Seiichi Mita

Hiromi Kurashima

Hiroyuki Mano

Hiroki Uchiyama

Shinji Kimura

Satoshi Kikuchi

Yutaka Kudo

Motonori Nakamura

Tatsuaki Osafune

Masaya Umemura

Hitoshi Hatayama

Eiji Tsumura

Kazuhiro Yamaji

Hiroshi Nakagoe

Katsuyuki Umezawa

Masao Tsukitani

Kazutomo Kobayashi

Tomonori Kashiwada

Eiichi Banno

Hiromi Isokawa

Harumi Morino

Akira Kanehira

Tomihisa Hatano

Yoshinori Mochizuki

Masahiko Matsui

Akira Tada

Tsutomu Tsuboi

Shinya Iguchi

Noritaka Honma

A service performance, such as a responsiveness and throughput, is improved in a distributed system including system components distributed over a plurality of regions. A route resolution system, is coupled to a distributed system including a plurality of components which configure the system and which are distributed over a plurality of regions, converts a measured value of a processing performance between the components into a standard value independent from network performance information, derives, upon receiving a route inquiry request from a component to which a request from a client terminal has been forwarded, a plurality of routes being coupled the plurality of the components for processing the request, calculates an estimated value of performance information required for processing the request, for each of the plurality of routes based on the standard value of the same request, and determines an optimal route based on the calculated estimated value.

Route resolution system and route resolution method

An optical transceiver that includes an optical modulator of a Mach-Zehnder type and made of primarily semiconductor materials, and an Erbium Doped Fiber Amplifier (fiber amplifier) is disclosed. The fiber amplifier and the MZ modulator, in addition to a wavelength tunable laser diode, an intelligent coherent receiver, and a polarization maintaining splitter, are installed within a compact case following the standard of CFP2. The fiber amplifier provides a wavelength tunable filter that passes light amplified by the fiber amplifier but eliminates amplified spontaneous emission in regions out of the wavelength band of the light.

Optical transceiver implementing erbium doped fiber amplifier

This invention includes an application server for executing an application and transmitting the execution results to a terminal or other such device connected to a network, and a management server for allocating the application and data on an application server and a storage device, respectively, wherein the management server reallocates the application execution site using: a procedure for obtaining device location information from a device via an application server and selecting, from the location information, an application server that will be the application migration destination; a procedure for indicating the migration-destination application server to the migration-source application server; and a procedure for migrating the application and the data between the application servers.

Information processing system, management server group, and server management program

An optical transceiver applicable to the coherent communication is disclosed. The optical transceiver includes a laser module, a transmitter module to output a transmitting signal by modulating a phase of an laser beam output from the laser module, and a receiver module to receive a receiving signal modulated in the phase thereof and extract data by multiplying the receiving signal with an laser beam output from the laser module.

Full-duplex optical transceiver applicable to digital coherent system

An aspect of the invention is an information terminal device includes a widget management unit for managing execution of a widget being a monofunctional program for performing display on the display part of a display device. The widget management unit includes a policy determination unit for determining the operation policy, including operation restriction and priority, concerning a display state at the display device in the widget, and a reliability determining unit for determining the reliability representing the reliability of the widget in the widget. When the state of the movement calculated by a navigation unit becomes a preset state, the widget management unit regulates the display state of the widget according to the operation restriction and the reliability, and performs display, while preferentially displaying guidance state and positional information calculated by the navigation unit.

Information terminal device, information terminal management system, and storage medium in which program is stored

An application distribution control system is made up of an information processing apparatus including a data collecting part that collects and stores data of a use state when using an application of an application distribution server into a memory and a data moving part that moves the use state data to a client terminal; the client terminal including a data setting part that receives the use state data from the information processing apparatus to set a use state of the application in accordance with the use state data and a request transmitting part that transmits a use request for the application to the application distribution server; and the application distribution server including a service providing part that receives the use request for the application from the client terminal to allow for the use of the application through the network.

Application distribution control system, application distribution control method, information processing apparatus, and client terminal

Disclosed is a secure remote access system for improving convenience of a user by utilizing a storage device including an anti-tampering device as a user authentication device in the secure remote access system for making access and execution of job while a user is making the encrypted communication to a server from an unspecified client. Usability can be improved and thereby the job executing function can be used smoothly at the internal and external sides of the working office by providing a server client system where the server can be manipulated remotely by distributing a storage device loading the authorized anti-tampering device to users, connecting the storage device to unspecified clients by users, and using the authentication information and application stored in the storage device. A remote access system having improved security and convenient during usage of client from the user can also be provided by reducing the secret information remaining in the manipulated client.

Remote access system, gateway, client device, program, and storage medium

A data processor which can flexibly control bandwidth settings and setting changes is provided. The data processor controls bandwidth allocation to electronic devices participating in a communication network. The data processor has a communication section used to communicate with the electronic devices and a bandwidth management section which performs control to variably allocate, based on requests from the electronic devices, bandwidths to be used for communication by the electronic devices. In cases where an additional device is added to the communication network and an adequate bandwidth cannot be allocated to the additional device, the bandwidth management section requests another electronic device transmitting video data of a resolution higher than corresponding to the user's intention to change its data format so as to allow an adequate bandwidth to be allocated to the additional device.

Data processor and communication system

In a terminal system for managing terminals coupled to a network, a terminal management server includes: a terminal information registration module for registering, in advance, information unique to each user of the terminal; an authentication module for executing authentication by comparing an ID and authentication information which are contained in an authentication request received from the terminal to user information set in advance; an authenticity determination module for determining, based on a predetermined investigation result received from the terminal, whether or not the terminal suffers falsification; and a unique information transmission module for transmitting, when the authentication is successful, and when the authenticity determination module has determined that the terminal does not suffer the falsification, the information unique to the each user to the terminal. The terminal outputs the information unique to the each user received from the terminal management server to a display unit.

Terminal system for guaranteeing authenticity, terminal, and terminal management server

An optical transceiver and a method to setup the optical transceiver are disclosed, where the transceiver has a function to compensate the distortion and the dispersion due to the limited bandwidth of the electrical signal line, that of the active devices, and that of the optical fiber. The optical transceiver comprises a transmitter with an equalizer unit and a receiver also with an equalizer unit. The equalizer unit in the transmitter compensates the distortion due to the limited bandwidth of the transmission lines for the electrical signal and that of the semiconductor active device, while, the equalizer unit in the receiver compensates the dispersion due to the limited bandwidth of the optical fiber.

Optical transceiver with equalizing function and a method to setup the optical transceiver

A device management system is provided which is used in a client/server architecture system, enabling safe sharing of a device without compromising user convenience. In a case where the device which is connected to a client is accessed from a server, in order that the device connected to the client can be used from the server by merely connecting the device to the client without performing another operation, a filter is provided on the client side, and a pseudo bus driver is provided on the server side. The filter in the client exclusively controls client operations to the device and server operations to the device. The pseudo bus driver virtually functions as a device driver between a communication unit for the client and the application in the server.

Device management system

A invented computer system has a plurality of computer boards; a plurality of terminals, each of which is coupled to each of the computer boards respectively via a network; a storage device having a plurality of storage areas, which is coupled to each of the computer boards; and a management computer; and wherein the management computer manages a correspondence between a user information and the storage area, and when a use request of the computer board is transmitted from a terminal, the management computer selects a usable computer board to turn on a power, reads information necessary to start the computer board from the storage corresponding to the transmitted user information, allows the computer board to start based on the read information, and notifies the terminal of information on the started computer board and identification information on the network allocated to the started computer board.

Computer system for selecting a useable computer board to power on and accessing corresponding storage based on terminal request that includes user information

In a client/server architecture system, a device management system having the function of safely sharing a device without compromising user convenience is provided. The device is coupled to a terminal that the user uses or a hub coupled to a network. A device management manager having a device driver function and communication function installed on the terminal or the like, a virtual device manager having a device driver function and communication function installed on the server, and an authentication server that manages access permission for the device allow the device to be virtually available as in the case of the device directly coupled to the server while managing the access to the device.

The present invention relates to a compact dispersion compensator and the like. The dispersion compensator comprises a housing and an optical fiber coil. The optical fiber coil has a coiled part constituted by a dispersion-compensating optical fiber wound like a coil while being in a bundle state with its winding distortion substantially eliminated. The housing is filled with a resin surrounding the coiled part of the optical fiber coil, whereas the coiled part is held by the resin. By this structure, the dispersion compensator can realize a further compactness.

Optical fiber, dispersion compensator, and optical transmission system

Growing community of inventors

Yokohama, Japan

Takatoshi Kato