Hitachi, Ltd.

Clarion Co

Yoshiteru Takeshima

Takashi Nishikado

Yasuhiro Takahashi

Masahiko Nakahara

Hideo Aoki

Fumio Noda

Daisuke Yokota

Kunihiko Toumura

Naoki Haraguchi

Masaaki Iwasaki

Yukio Ogawa

Yukiko Takeda

Yoshiki Kurokawa

Masafumi Kinoshita

Hideki Takano

Takahiro Ogawa

Haruhiko Sawajiri

Hiroki Miyamoto

Koki Nakashiro

Gen Tsuchida

Yuncheng Zhu

Kyosuke Tsurusu

Hiraku Kawabe

Kazuya Tsuruta

Osamu Namiki

A supply chain model generation system independently uses a business entity code and an item code representing an item related to a transaction in result information on a supply chain operation of a plurality of business entities; transaction information is extracted from the result information and a transaction time series information table is generated; a relationship in the transaction time series information table in each business entity is analyzed and a virtual business entity code on a supply side and a virtual business entity code on a demand side are assigned for each business entity code; and further a logical model information table where a virtual item code is assigned with respect to an item code related to the transaction of a business entity of the virtual business entity code on the supply side and a business entity of the virtual business entity code on the demand side is generated.

Supply chain model generation system

A data analysis device executes: acquiring time-series data including data of multiple items from an analysis target system; extracting data of at least, one first item from the time series data; calculating a feature of a temporal change of the data of the first item; extracting data of at least one second item from the time series data; calculating a feature of at least one of a relevance between the data of the first item and the data of the second item and a relevance between the data of the multiple second items; determining a model corresponding to the analysis target system on the basis of the feature of the temporal change and the change of the relevance; and setting the parameter in the analysis target system by using the parameter setting configuration of the model.

Parameter setting method, data analysis device and data analysis system

In a communication system in which a plurality of communication apparatuses perform communication via a communication network, a network abnormality detection system dynamically creates a monitoring rule during operation without defining information (monitoring rule) regarding communication to be monitored in advance and perform a collection process and an abnormality determination process quickly even when an amount of information to be monitored is vast. The network abnormality detection system copies packets transmitted at predetermined measurement positions in the communication network, calculates communication statistics information at each measurement position from the copied packets, analyzes one or more pieces of communication statistics information, and detects occurrence of communication abnormality.

Network abnormality detection system, measurement apparatus, and analysis apparatus

In a system with a terminal sending a request, when a load distributing unit distributes the request to many service providing apparatuses, the load distributing unit becomes a bottleneck of performance and/or a single point of failure. When the load is distributed to the service providing apparatuses without using the load distributing unit, a particular function is required on the terminal side to appropriately select one of apparatuses. A name resolution unit including an address group management table with IP addresses to select, for a request from a terminal, an address from the table to return the address to the terminal and a plurality of service providing apparatuses to which at least zero IP address selected from the table is allocated without duplication are arranged such that each service providing apparatus is allocated with IP addresses according to processing performance thereof, thereby conducting appropriate load distribution.

Service providing system

An apparatus for terminating and replaying transmission control protocol (TCP) communication between a server and cellular phone is disclosed. The TCP relay apparatus performs precise control for each TCP connection in the process of executing default TCP transmission control for the server and performing wireless-optimized TCP transmission control for the cell phone while facilitating setup for determination of the type of a network to which a communication destination terminal belongs. The TCP relay apparatus includes a unit capable of setting TCP control information suitable for the characteristics of a network linked to the destination device on a per-TCP connection basis, a unit which enables an application program to instruct the TCP control information setting, and a unit which determines the network type by judging whether the connection is a passive connection to a listen port or a TCP connection to the server.

TCP relay apparatus

A vehicle-onboard apparatus system, comprises a portable terminal and a vehicle-onboard machine that are configured to be coupled to each other for communication. The portable terminal and the vehicle-onboard machine each store operation logs including operation contents thereof. When an operation of the vehicle-onboard machine and an operation of the portable terminal relate to each other, an operation log resulting from the operation of the vehicle-onboard machine and an operation log resulting from the operation of the portable terminal are associated with each other by first identification information. The vehicle-onboard machine makes a user to recognize the first identification information corresponding to an operation causing detected predetermined state. When the portable terminal receives an input of the first identification information presented by the vehicle-onboard machine, the portable terminal acquires the operation log associated with the input first identification information. The portable terminal analyzes the acquired operation log.

Vehicle-onboard apparatus system, portable terminal, and vehicle-onboard machine

In a system without a TCP termination process at normal times, and in the case where a URL within an HTTP access is extracted from reception packets, a passage/access refusal determination of the URL is performed, and a determination result is an access refusal, the TCP termination process is performed, a filtering device has the possibility that when an UTTP access as a disconnect case is frequently performed, it is erroneously recognized as a DoS attack on the side of the Web server device. A network system has a detection unit of frequent accesses to access control object data in the same Web server device from the same client device and a disconnect unit of a TCP connection to the Web server device after detection through the detection unit.

Filtering device for detecting HTTP request and disconnecting TCP connection

The disclosed DNS server apparatus monitors whether each service providing server apparatus is active or inactive and collects load information. When the monitored apparatus is active but congested or is unable to offer services, a virtual IP address assigned to a Sorry server apparatus is sent back as a response. When service providing server apparatuses in active state are congested or unable to provide services, the DNS server apparatus sends a server activation instruction and an IP addresses for services to the service providing server apparatuses on standby to activate them. Each service providing server apparatus on standby activates server software in response to the server activation instruction and assigns the received IP address to a network interface as a virtual IP address, thus activating the interface.

Network system

A technique is provided to dynamically change priority, according to content of communication data, when the communication data is relayed between a client device and a host device. A communication gateway () is a relay system for relaying the communication data between a thin client device () and the host device (). The communication gateway () monitors communication performed by the host device () in response to a request from the thin client device (). The communication gateway () determines priority of the communication that is returned to the client device by the host device () in response to the request, based on a protocol for the communication performed by the host device ().

Relay system, relay program, and relay method

A communication system in which, even when an HTTP session is disconnected from a mobile device, the HTTP session can be continued or a response from a Web server can be returned to a user, without installing a special application in the mobile device. A load-distributable system is provided for realizing such operation. To that end, in a communication system having a relay device that relays a request from a portable telephone terminal () to a Web server (), the relay device () relays a processing request from the portable telephone terminal () to the Web server, and stores a processing response from the Web server. The relay device () sends the portable telephone terminal a message to the effect that the processing response should be acquired from the relay device () or a message with the processing response added.

Relay device and program product, allowing continued communication via an alternative protocol

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

The relay method for relaying an encryption communication in a gateway server between a client device and a content server includes the steps of receiving an encryption communication connection message to the content server from the device; producing a temporary encryption communication permit and a private key of its counterpart for the content server of a destination server name included in the connection message; sending the permit to the device; performing an End-End encryption communication with the device, receiving an encrypted access request message sent by the device, and decrypting and converting the request message to an access request message of a plain text; performing an End-End encryption communication with the content server, and acquiring content information instructed by the access request message; and performing value added processing for the acquired content information and its communication header, encrypting the information and the header, and sending them to the device.

Relay method of encryption communication, gateway server, and program and program memory medium of encryption communication

It is possible to control the data transfer between a proxy server apparatus and an application server that is connected to the proxy server apparatus. A value added service control command is added to an request message and/or the response data. In accordance with the value added service control command included in the request message, a first proxy servercontrols whether it relays this request message directly to a destination and it relays this request message to the destination after transferring this request message to an application serverand applying the value added service. Further, based on the value added service control command which is included in the response data, the first proxy servercontrols whether it relays this response data directly to a destination or it relays this response data to the destination after transferring this response data to the application serverand applying the value added service.

Proxy server apparatus and method for providing service using the same

It is possible to control the data transfer between a proxy server apparatus and an application server that is connected to the proxy server apparatus. An value added service control command is added to an request message and/or the response data. In accordance with the value added service control command included in the request message, a first proxy server Ia controls whether it relays this request message directly to a destination and it relays this request message to the destination after transferring this request message to an application server 7 and applying the value added service. Further, based on the value added service control command which is included in the response data, the first proxy server Ia controls whether it relays this response data directly to a destination or it relays this response data to the destination after transferring this response data to the application server 7 and applying the value added service.

Growing community of inventors

Tokyo, Japan

Yoshiteru Takeshima