Hitachi, Ltd.

Nhk Spring Co., Ltd.

Sumitomo Electric Industries, Limited

Daisuke Yokota

Fumio Noda

Yasuhiro Takahashi

Hideo Aoki

Hideki Okada

Satoshi Akiyama

Takashi Nishikado

Yoshiteru Takeshima

Senri Moriyama

Masaya Komazaki

Go Nagayasu

Tadashi Takeuchi

Motonori Nakamura

Akihisa Nagami

Ikuko Kobayashi

Yoshihiro Hayashi

Koji Watanabe

Yukio Ogawa

Shinji Kimura

Yuichi Ohga

Naohiko Irie

Kiminori Sugauchi

Mitsuru Ikezawa

Takehiro Morishige

Hiroji Shibuya

Aritoki Takada

Osamu Kasuu

Yukinobu Mizoguchi

Masayuki Tosaka

Osamu Kasu

Masahiro Ohmiya

Katsuto Shimizu

A coil spring includes a helically formed wire having end turn portions at ends thereof, a plurality of first rough surfaces, each including first shot peening indentations formed on a part of a surface of the end turn portions, and a second rough surface including second shot peening indentations formed on the entire surface of the wire except for the first rough surface. The second rough surface has a surface roughness different from that of the first rough surface.

Vertical motion impeller-type shot peening device and coil spring

A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.

Coil spring processing device

In a control monitoring system in which an information system is connected with a control system, the control system includes a control device that performs at least one of control and monitoring of a control target, a computer that performs a process related to the control or the monitoring, and a gateway device that relays a communication message between the control device and the computer. The gateway device acquires a predetermined state index related to a first communication message when the first communication message is received from the computer, determines whether or not a predetermined execution condition is satisfied based on the state index, transmits a second communication message based on the received first communication message to the control device when the execution condition is satisfied, and does not transmit the second communication message to the control device when the execution condition is not satisfied.

Control system in which communication between devices is controlled based on execution condition being satisfied, gateway device used in the control system, and control method for the control system

A vertical motion impeller-type shot peening device performs a second shot peening to a coil spring including first shot peening indentations. The vertical motion impeller-type shot peening device includes a workpiece holding mechanism including a lower end turn support and an upper end turn support, a stress applying mechanism which compresses the coil spring, a rotation mechanism, and a projection mechanism which includes a pair of vertically movable impeller units. A first rough surface including first shot peening indentations is formed on a part of end turn portions of the coil spring. A second rough surface including second shot peening indentations is formed on the entire surface of wire except for the first rough surface.

A storage system includes an information apparatus in which a virtualization mechanism is implemented to build a virtual machine, a storage apparatus which is coupled to the information apparatus, which includes a first logical volume proving a storage area to be used by the virtual machine, and which includes a virtual disk area and a virtual disk management area on the first logical volume, the virtual disk area used by the virtual machine to store data, the virtual disk management area storing management data for managing the virtual disk area; and a management computer which is coupled to the information apparatus and the storage apparatus, and which includes a remote copy controller configured to copy the virtual disk area and the virtual disk management area on the first logical volume of the storage apparatus to a storage area on a second logical volume included in a second storage device coupled to the storage apparatus. The remote copy controller determines whether, on the second logical volume, there is the virtual disk management area used by the virtual machine. When determining that there is not, the remote copy controller transmits, to the storage apparatus, an instruction to copy the virtual disk management area and the virtual disk area to the second logical volume.

Storage system, and remote copy control method therefor

The virtual PC management system includes: a unit which acquires a power on/off state of a virtual machine from a computer via the network and stores it in a storage; a unit which acquires a power on/off state of a computer from the computer via the network and stores it into the storage; a unit which receives a start-of-use request for a virtual machine from the client machine and searches stored data of the storage unit for a computer which is in a power-on state and to which a virtual machine is not allocated, as an allocation candidate; a unit which allocates the virtual machine in accordance with the start-of-use request to the computer of the allocation candidate; and a unit which notifies, via the network, the computer of the allocation candidate of an instruction to turn on the power of the virtual machine.

Virtual PC management method, virtual PC management system, and virtual PC management program

A proxy servertransfers, when a protocol header and content specified in a distribution request from a clientare not stored in a storage device, the distribution request to an origin server; stores the protocol header and content, which have been transmitted from the origin server, in the storage device; transmits the protocol header and content to the client; creates another protocol header based on the protocol header transmitted from the origin server; and stores the created protocol header in the storage device. When the protocol header and content specified in the distribution request from the clienthave been stored in the storage device, the proxy serverextracts the protocol header and content from the storage deviceand distributes them to the client

Data transfer method and proxy server, and storage subsystem

A congestion control and avoidance method including a method check step of determining whether the request contents is cacheable or uncacheable on the basis of the request inputted from the client terminal, a first Uniform Resource Identifier (URI) check step of, when it is determined that the request contents is cacheable in the method check step, checking a URI included in the request from the client terminal to determine whether the request contents is cacheable or uncacheable, a first URI hash search step of, when it is determined that the request contents is cacheable based on determination of the first URI check step, searching a URI hash to determine to execute any of regular caching, priority caching and access limitationing operation, and a step of executing any of the regular caching, priority caching and access limitationing operation according to determination in the first URI hash search step.

Congestion control and avoidance method in a data processing system

A management device selects a storage device having a plenty of unallocated storage regions, selects a target using a port having a small allocation quantity from the storage device targets, and allocates the target, an initiator, and a storage region. When the number of targets and the allocated storage regions prepared by the storage device is within a predetermined number, the storage device manages the storage device as an allocation candidate. When the predetermined number is exceeded, the exceeding one is excluded from the allocation candidate. When the number of storage devices excluded from the allocation candidate has reached a certain number, the management device manages a new storage device and a new storage region as an allocation candidate.

Volume allocation method

Provided are a stream distribution system and a failure detection method capable of easily identifying the cause of quality loss in stream distribution. This stream distribution system includes a first server for communicating with a client terminal via a router and sending stream data, and a second server configured as a redundant server of the first server and connected to the first server. The first server has a communication status notification unit for sending a connection management table concerning the communication with the client terminal to the second server. The second server has a packet recording unit for acquiring a mirror packet, which is a copy of a packet sent to the first server, from the router, and a network failure monitoring unit for detecting a failure in a network between the first server and the client terminal based on the connection management table and a packet buffer.

Stream distribution system and failure detection method

A management system accepts a connection request from a client computer to a server computer, acquires connection settings information, calculates a network bandwidth required for processing for connection from the client computer to the server computer, stores the connection request into a connection request processing queue, determines whether the processing for the connection from the client computer to the server computer can be performed or not, and notifies the client computer of a server identification number. The client computer issues a connection request to the server computer based on the received server identification number, and starts communication therewith. In spite of concentration of connection requests from a large number of client computers to server computers, the connection requests can be processed while controlling the communication data volume generated in a network at a point where the server computers are aggregated, so as to avoid occurrence of congestion.

Communication system and communication management method

A proxy response apparatus is equipped with a module that obtains and retains request messages and response messages exchanged between a client and main and backup servers, a module for detecting a failure in the main server, a module for sending to the backup server requests retained when a failure occurs in the main server, a module for receiving responses from the backup server, a module for detecting communications status between the client and the main server at the time the failure occurred, and a module for responding in place of the main server in order to resume communicating state from the previous state.

Proxy response apparatus

When a client-server system that adopts a Web service featuring dynamic connection among different systems is constructed, an existing priority control device therein disconnects communication with lower priority, at the time of server overload that continues for several hours. Thus, the availability of the system is reduced. A client-server Web service system includes a unit for interpreting communication protocols at a protocol layer 4 used in the system, a unit for receiving requests transmitted from clients to a server, for buffering, a unit for analyzing the protocol type, the destination, and the communication contents of each of the requests, a unit for converting the result of the analysis into a priority, and a unit for transmitting the buffered requests to the server based on the priority and then transmitting to the clients responses from the server.

Priority control device

In a Web information preferential transfer system, two priorities, personal priority and site priority can be set on the site of a user. On the site of a user, the site priority which can be set by a LAN-side proxy server is the priority of when a request is made. A WAN-side proxy server installed on the provider side extracts the site priority of the request, converts it to the final priority according to the communication state and settings, converts the final priority to a preferential control parameter of an IP packet of a Web object in response to the Web request, and relays it to the LAN-side proxy server. Preferential control may be made based on the final priority in the WAN-side proxy server. Charging by the provider is performed based on the communication contents used and the requested priority.

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Yokohama, Japan

Daisuke Yokota