Fujitsu Corporation

Kabushiki Kaisha Toshiba

Toshio Ito

Toshihiko Morita

Masaru Sawada

Toshikazu Kanaoka

Yu Kaneko

Yasuyuki Tanaka

Shigeo Matsuzawa

Tomonori Maegawa

Akihiro Itakura

Takao Sugawara

Mitsuru Kanda

Keisuke Mera

Masaki Mukamoto

Takeshi Sakoda

An information processing system includes an installation device and a cyber physical system (CPS) device. The installation device includes a detection unit, a determination unit, and a first communication unit. The detection unit detects a communication state of a first network to which a first CPS server device is connected. The determination unit determines the first CPS server device or a second CPS server device as an initial registration destination, based on the communication state. The first communication unit transmits a notification indicating the initial registration destination to the CPS device. The CPS device includes a memory control unit and a registration processing unit. The memory control unit stores, upon receiving the notification from the installation device, the initial registration destination included in the notification in a memory unit. The registration processing unit connects to the initial registration destination, to perform initial registration of the CPS device.

Information processing system, installation device, and computer program product

According to an embodiment, a device sends, to an access point device, a network access authentication request issued with respect to a first network. An authentication server device includes a first device-authentication processing unit that, in response to the network access authentication request, performs an authentication operation based on first-type authentication information. The access point device includes a transfer processing unit and a second device-authentication processing unit. When second-type authentication information is not included in the network access authentication request, the transfer processing unit transfers the network access authentication request to the authentication server device. When the second-type authentication information is included in the network access authentication request and when an authentication operation in the access point device is enabled, the second device-authentication processing unit performs an authentication operation based on the second-type authentication information.

Authentication system using access point device and authentication server to handle a device's network access authentication request

A wireless communication device according to an embodiment includes one or more hardware processors. The one or more hardware processors: collect forwarding load information about wireless communications in a wireless multi-hop network; determine, based on the forwarding load information, a degree of forwarding priority for a packet corresponding to a forwarding determination target; perform a forwarding control such that the packet corresponding to the forwarding determination target is forwarded earlier as the degree of forwarding priority is higher; and, when the packet corresponding to the forwarding determination target is forwarded, transmit the packet corresponding to the forwarding determination target by multi-cast communications or broadcast communications.

Wireless communication device, wireless communication system, and computer program product

An anomaly of a moving object is detected by using a regression function according to k-nearest-neighbor crossover kernel regression. The regression function is configured to derive an estimation value for a value of a second item from a value of a first item regarding a movement of the moving object. Whether the moving object has an anomaly or not is determined, based on whether a difference between an estimation value of the second item and an actually measured value of the second item is smaller than or equal to a threshold. The estimation value of the second item is derived by the regression function from a value of the first item in the log data having values of the first item and values of the second item, and the actually measured value of the second item is also included in the second log data.

Storage medium storing anomaly detection program, anomaly detection method, and anomaly detection apparatus

A non-transitory computer-readable recording medium having stored therein an analysis program causing a computer to execute processing includes: generating a regression function including a plurality of explanatory variables and an objective variable based on regression analysis using observed values of a plurality of physical elements each related to motion of a moving object; dividing an explanatory variable space containing the plurality of explanatory variables into a plurality of regions by using the regression function; and generating contribution information on a contribution of each of the plurality of explanatory variables to the objective variable for each of the plurality of regions.

Recording medium recording analysis program, information processing apparatus, and analysis method

One embodiment of the present invention is a wireless communication system including at least a first wireless communication device and a second wireless communication device that periodically switch a reception channel and wirelessly communicate. The first device detects an overlap schedule period during which the first device and the second device use an identical reception channel, based on use schedule periods of the reception channel of both the devices, determines to extend or reduce the use schedule period of the reception channel of the first device, based on the detected overlap schedule period, adjusts the use schedule period of the reception channel of the first device so as to be extended or reduced according to the determination, and switches the reception channel at an expiration time point of the adjusted use schedule period.

Wireless communication system, wireless communication device, and non-transitory storage medium

A method of detecting abnormality includes acquiring, by a computer, operation log data that include measured data of a plurality of items related to an operation of a mobile object that is electrically driven; and determining, based on the operation log data, that an abnormality occurs in the mobile object when measured data of two items among the plurality of items do not satisfy a linear relationship, the two items having the linear relationship in a normal state of the mobile object.

Method of detecting abnormality and information processing apparatus

A wireless communication device as an embodiment of the present invention is a wireless communication device for performing wireless communications with communication partners while switching channels to be used for each time slot, and includes a storage, an updater, a determinator, and a communicator. The storage stores pre-generated scheduling data indicating channels that can be used in each time slot. The updater determines whether or not each channel included in the scheduling data is usable, and registers the channel determined as unusable on a blacklist. The determinator determines the channel to be used in each time slot on the basis of the scheduling data and the blacklist. The communicator performs wireless communications with a communication partner by using the channel determined in each time slot.

Wireless communication device, wireless communication method and non-transitory computer readable medium

A communication device of an embodiment includes one or more processors. The processors synchronize time between the communication device and a different communication device using data transmitted and received by time division multiple access. The processors determine the end timing of carrier-sensing in a time slot of the time division multiple access. The processors control carrier-sensing to end at a determined end timing. The processors generate data including timing information, allowing identification of the determined end timing, as data to be transmitted to the different communication device.

Communication device, method of communication, and computer program product

The resource control apparatus according to an embodiment described herein includes an allocating time acquisitor, a usage amount meter, an allocation amount calculator, and an allocation amount setter. The allocating time acquisitor acquires an allocating time at which the VMM allocates a resource allocation amount to a VM. The usage amount meter measures a resource usage amount of the VMM at the allocating time. The allocation amount calculator calculates an allocation amount based on a usage amount. The allocation amount setter sets an allocation amount to a VMM at a setting time which is a predetermined time before an allocating time.

Resource control apparatus, method, and storage medium

An information processing method for system identification includes: generating a fitting curve represented by a sum of exponential functions for each of a set of digital inputs and a set of digital outputs for a physical system that is represented by one or plural equations including m-order differential operators (m is an integer equal to or greater than 1); and calculating coefficients of the differential operators, which are included in first coefficients, so that a first coefficient of each exponential function included in an expression obtained by a product of the differential operators and the fitting curve for the set of the digital inputs is equal to a second coefficient of the same exponential function, which is included in the fitting curve for the set of the digital outputs.

Apparatus and method for system error monitoring

A building-facility information storage stores data sizes of process data to be collected from building-side communicating devices. A schedule generating unit generates a collection schedule of the process data from the building-side communicating devices so that, in a collection period including a plurality of unit periods continuous in terms of time, a first communication load representing a total data volume received from the building-side communicating devices per unit period and second communication loads each representing a data volume transmitted from each of the building-side communicating devices per unit period are balanced among the unit periods. A network communicating unit collects the process data from the building-side communicating devices in accordance with the collection schedule.

Remote information collecting device and computer readable medium

A neural network designing method forms a RNN (Recurrent Neural Network) circuit to include a plurality of oscillating RNN circuits configured to output natural oscillations, and an adding circuit configured to obtain a sum of outputs of the plurality of oscillating RNN circuits, and inputs discrete data to the plurality of oscillating RNN circuits in order to compute a fitting curve with respect to the discrete data output from the adding circuit.

Neural network designing method and digital-to-analog fitting method

There is provided a data collecting device configured to collect data from a plurality of nodes. An inquiry transmitting unit transmits inquiry messages to request transmission of the data to the nodes, respectively. A response receiving unit receives response messages including the data from the nodes, respectively. A reception scheduler generates a reception schedule of the response messages from the nodes based on request information indicating data collection condition from the nodes. A transmission scheduler generates a transmission schedule of the inquiry messages based on the reception schedule and characteristics of communication with the nodes. The inquiry transmitting unit transmits the inquiry messages to the nodes, respectively, based on the transmission schedule.

Data collecting device, computer readable medium, and data collecting system

An error correcting circuit includes a marker decoder for sampling 2-bit markers from a data string and, from sample values of the 2-bit markers, determine whether there is an occurrence of an error on the 2-bit markers, of an insertion error, or of a deletion error. The circuit also includes an error corrector for performing an error correction on the data string received from the marker decoder by using an error correcting code in the data string. When either one of the insertion error and the deletion error is determined to have occurred, the marker decoder can perform another error correction on the either one of the insertion error and the deletion error, and output the data string from which the 2-bit markers are removed.

Growing community of inventors

Kawasaki, Japan

Toshio Ito