Patents by Inventor Hiroki Tagato
Hiroki Tagato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11914493Abstract: Provided is an information processing device which is capable of suppressing a deterioration in accuracy of detecting an anomaly and accuracy of analyzing the anomaly, while suppressing an increase in an amount of data to be stored. The information processing system includes anomaly detection unit that collects event data indicating a predetermined event detected in a process of a device to be monitored, determines whether a predetermined index value related to the event exceeds a preset first threshold, and instructs enhanced monitoring of the device to be monitored and the process related to the event when the index value exceeds the first threshold, and collection instruction unit that determines an additional event being an event to be additionally monitored when the enhanced monitoring is instructed, and instructs the device to be monitored, which is subjected to the enhanced monitoring, to monitor the determined additional event.Type: GrantFiled: January 11, 2021Date of Patent: February 27, 2024Assignee: NEC CORPORATIONInventors: Shuichi Karino, Kazuhiko Isoyama, Yuji Kobayashi, Yoshiaki Sakae, Hiroki Tagato, Masato Yasuda
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Publication number: 20240039629Abstract: A learning model is trained so that a signal state can be estimated with high accuracy even in a case where a constellation on a complex plane is rotated. A learning apparatus (1) includes: an acquisition section (11) that acquires a constellation of a known state optical signal transmitted through optical fiber; a generation section (12) that generates a corrected constellation obtained by rotating the constellation on a complex plane; and a learning section (13) that uses the constellation and the corrected constellation to train a learning model.Type: ApplicationFiled: July 25, 2023Publication date: February 1, 2024Applicant: NEC CorporationInventors: Jun Kodama, Yoshiaki Sakae, Yuji Kobayashi, Etsuko Ichihara, Jun Nishioka, Hiroki Tagato, Takashi Konashi
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Publication number: 20240039640Abstract: At least one processor included in an optical signal state estimation apparatus carries out: an acquisition process for acquiring a constellation of an optical signal; a generation process for generating time series data in which pieces of histogram information are arranged in time series, the histogram information being obtained by counting the number of signal points of the constellation, the signal points being included in each of grids obtained by dividing an in-phase component direction and a quadrature component direction into a specific number of rows and the specific number of columns, respectively; and an estimation process for estimating a state of the optical signal by inputting the time series data to a learned model.Type: ApplicationFiled: July 25, 2023Publication date: February 1, 2024Applicant: NEC CorporationInventors: Jun KODAMA, Yoshiaki SAKAE, Yuji KOBAYASHI, Etsuko ICHIHARA, Jun NISHIOKA, Takashi KONASHI, Hiroki TAGATO
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Publication number: 20230421458Abstract: To extract data-for-machine-leaning so as to enable accurate detection of an abnormality while reducing normal state patterns in a mobile network. A learning data extracting apparatus includes: an issuing section that issues a network service use request which is to be processed by cooperation of a plurality of communication apparatuses constituting C-plane; an obtaining section that obtains, as pieces of candidate learning data, time series data of information relating to the plurality of communication apparatuses; and an extracting section that extracts, as data-for-machine-leaning, a piece of candidate learning data with which the process in response to the network service use request has been successfully ended, from among the pieces of candidate learning data.Type: ApplicationFiled: June 23, 2023Publication date: December 28, 2023Applicant: NEC CorporationInventors: Yoshiaki SAKAE, Hiroki TAGATO, Takashi KONASHI, Jun NISHIOKA, Masanao NATSUMEDA, Yuji KOBAYASHI, Jun KODAMA, Etsuko ICHIHARA
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Publication number: 20230349750Abstract: A structure deterioration detection system according to the present disclosure includes: a sensing optical fiber (10) laid on a structure; a reception unit (201) that receives vibration information detected by the sensing optical fiber (10); an identification unit (202) that identifies a change pattern of a vibration characteristic of each of a plurality of points on the structure, based on the vibration information; and an analysis unit (203) that analyzes a deterioration state of at least one point among the plurality of points, based on a change pattern of a vibration characteristic of each of the plurality of points.Type: ApplicationFiled: January 30, 2020Publication date: November 2, 2023Applicant: NEC CorporationInventors: Yuji Kobayashi, Yoshiaki Sakae, Hiroki Tagato, Kazuhiko Isoyama, Jun Nishioka
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Publication number: 20230024381Abstract: A utility pole degradation detection system according to the present disclosure includes: a sensing optical fiber (10) laid on a plurality of utility poles (30); a receiving unit (201) that receives vibration information detected by the sensing optical fiber (10); an identifying unit (202) that identifies a natural frequency of each of the plurality of utility poles (30) on the basis of the vibration information; and an analyzing unit (203) that analyzes a degradation state of at least one utility pole (30) among the plurality of utility poles (30) on the basis of a natural frequency of each of the plurality of utility poles (30).Type: ApplicationFiled: January 22, 2020Publication date: January 26, 2023Applicant: NEC CorporationInventors: YOSHIAKI SAKAE, Hiroki Tagato, Kazuhiko Isoyama, Jun Nishioka, Yuji Kobayashi
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Patent number: 11372839Abstract: The purpose of the present invention is to provide a technology which assists a verifying party in ascertaining an anomaly in an event of which notification has been made. Provided is an assistance device, comprising: an acquisition unit which acquires as an associated event, from among events which take place among a plurality of elements, and with respect to elements which have been associated with an event which has been detected as an anomalous event, an event other than the anomalous event which has been associated with the elements; and a generating unit which, on the basis of the anomalous event and the associated event, generates a relational graph in which the elements are vertices, the relations among the elements are edges, the anomalous event and the associated event are respectively represented, and the associated event is displayed in a display screen in a different manner from the manner in which the anomalous event is displayed.Type: GrantFiled: December 1, 2016Date of Patent: June 28, 2022Assignee: NEC CORPORATIONInventors: Junpei Kamimura, Koji Kida, Kazuhiko Isoyama, Yuji Kobayashi, Hiroki Tagato, Etsuko Ichihara, Yoshiaki Sakae
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Publication number: 20210133068Abstract: Provided is an information processing device which is capable of suppressing a deterioration in accuracy of detecting an anomaly and accuracy of analyzing the anomaly, while suppressing an increase in an amount of data to be stored. The information processing system includes anomaly detection unit that collects event data indicating a predetermined event detected in a process of a device to be monitored, determines whether a predetermined index value related to the event exceeds a preset first threshold, and instructs enhanced monitoring of the device to be monitored and the process related to the event when the index value exceeds the first threshold, and collection instruction unit that determines an additional event being an event to be additionally monitored when the enhanced monitoring is instructed, and instructs the device to be monitored, which is subjected to the enhanced monitoring, to monitor the determined additional event.Type: ApplicationFiled: January 11, 2021Publication date: May 6, 2021Applicant: NEC CORPORATIONInventors: Shuichi KARINO, Kazuhiko ISOYAMA, Yuji KOBAYASHI, Yoshiaki SAKAE, Hiroki TAGATO, Masato YASUDA
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Publication number: 20210109801Abstract: An anomaly assessment device includes: a storage storing a correspondence relation between a type of a device, and a transition state candidate group in a stable state of the device of the type; at least one memory storing instructions; and at least one processor configured to execute the instructions to: acquire event information of a monitoring target device; identify a transition state associated with the event information acquired of the monitoring target device; and assesse normality/anomaly of the monitoring target device, based on the transition state candidate group associated with a type of the monitoring target device in the stored correspondence relation, and the identified transition state.Type: ApplicationFiled: November 17, 2017Publication date: April 15, 2021Applicant: NEC CorporationInventors: Masato YASUDA, Yoshiaki SAKAE, Hiroki TAGATO, Shuichi KARINO, Kazuhiko ISOYAMA, Yuji KOBAYASHI
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Patent number: 10909014Abstract: Provided is an information processing device which is capable of suppressing a deterioration in accuracy of detecting an anomaly and accuracy of analyzing the anomaly, while suppressing an increase in an amount of data to be stored. The information processing system includes anomaly detection unit that collects event data indicating a predetermined event detected in a process of a device to be monitored, determines whether a predetermined index value related to the event exceeds a preset first threshold, and instructs enhanced monitoring of the device to be monitored and the process related to the event when the index value exceeds the first threshold, and collection instruction unit that determines an additional event being an event to be additionally monitored when the enhanced monitoring is instructed, and instructs the device to be monitored, which is subjected to the enhanced monitoring, to monitor the determined additional event.Type: GrantFiled: February 19, 2018Date of Patent: February 2, 2021Assignee: NEC CORPORATIONInventors: Shuichi Karino, Kazuhiko Isoyama, Yuji Kobayashi, Yoshiaki Sakae, Hiroki Tagato, Masato Yasuda
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Publication number: 20200301907Abstract: The purpose of the present invention is to provide a technology which assists a verifying party in ascertaining an anomaly in an event of which notification has been made. Provided is an assistance device, comprising: an acquisition unit which acquires as an associated event, from among events which take place among a plurality of elements, and with respect to elements which have been associated with an event which has been detected as an anomalous event, an event other than the anomalous event which has been associated with the elements; and a generating unit which, on the basis of the anomalous event and the associated event, generates a relational graph in which the elements are vertices, the relations among the elements are edges, the anomalous event and the associated event are respectively represented, and the associated event is displayed in a display screen in a different manner from the manner in which the anomalous event is displayed.Type: ApplicationFiled: December 1, 2016Publication date: September 24, 2020Applicant: NEC CorporationInventors: Junpei KAMIMURA, Koji KIDA, Kazuhiko ISOYAMA, Yuji KOBAYASHI, Hiroki TAGATO, Etsuko ICHIHARA, Yoshiaki SAKAE
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Patent number: 10754719Abstract: The diagnosis device specifies a progression degree relating to a first information processing device for output information output by a first detection device at a first timing with respect to the first information processing device, based on device information indicates a progression degree that represents a degree to which the information processing device is abnormal with respect to the information processing device, determines whether or not information in which a first detection device identifier of the first detection device and the specified progression degree are associated with each other is included in progression-degree information in which a detection device identifier capable of identifying a detection device and the progression degree are associated with each other; and calculates the progression degree relating to the first information processing device according to the specified progression degree when the information is determined to be included in the progression-degree information.Type: GrantFiled: December 6, 2016Date of Patent: August 25, 2020Assignee: NEC CORPORATIONInventors: Kazuhiko Isoyama, Koji Kida, Hiroki Tagato, Yoshiaki Sakae, Junpei Kamimura, Yuji Kobayashi, Etsuko Ichihara
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Publication number: 20200244688Abstract: Disclosed are an information selection device and the like that make it possible to rapidly acquire information about an event of interest. An information selection device is configured to specify target log information among log information. The log information represents that a process is executed for a processing object in a target system and the target log information represents a processing object that may affect an abnormal process executed in the target system. The information selection device is configured to calculate a frequency of the target log information for each combination of the process with the processing object, calculate an abnormality degree of the target log information based on the calculated frequency and select relevant log information with having the abnormality degree satisfying a condition for determining abnormal log information among the target log information.Type: ApplicationFiled: August 7, 2018Publication date: July 30, 2020Applicant: NEC CorporationInventors: Etsuko ICHIHARA, Yoshiaki SAKAE, Shuichi KARINO, Hiroki TAGATO, Kazuhiko ISOYAMA, Yuji KOBAYASHI, Takayoshi ASAKURA
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Patent number: 10621947Abstract: Provided is, for example, a display control apparatus that generates display information for specifying an event occurred in an information processing system easily.Type: GrantFiled: December 19, 2016Date of Patent: April 14, 2020Assignee: NEC CORPORATIONInventors: Etsuko Ichihara, Koji Kida, Hiroki Tagato, Yoshiaki Sakae, Kazuhiko Isoyama, Junpei Kamimura, Yuji Kobayashi
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Publication number: 20200057703Abstract: Provided is an information processing device which is capable of suppressing a deterioration in accuracy of detecting an anomaly and accuracy of analyzing the anomaly, while suppressing an increase in an amount of data to be stored. The information processing system includes anomaly detection unit that collects event data indicating a predetermined event detected in a process of a device to be monitored, determines whether a predetermined index value related to the event exceeds a preset first threshold, and instructs enhanced monitoring of the device to be monitored and the process related to the event when the index value exceeds the first threshold, and collection instruction unit that determines an additional event being an event to be additionally monitored when the enhanced monitoring is instructed, and instructs the device to be monitored, which is subjected to the enhanced monitoring, to monitor the determined additional event.Type: ApplicationFiled: February 19, 2018Publication date: February 20, 2020Applicant: NEC CORPORATIONInventors: Shuichi KARINO, Kazuhiko ISOYAMA, Yuji KOBAYYASHI, Yoshiaki SAKAE, Hiroki TAGATO, Masato YASUDA
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Publication number: 20190018959Abstract: The purpose of the present invention is to provide a software analysis device which efficiently analyzes a computer environment in which software is capable of running. The software analysis system determines an order of detection devices, generates order information representing the order, and calculate a progression degree of abnormality based on how degree a predetermined order include the order in the order information.Type: ApplicationFiled: December 6, 2016Publication date: January 17, 2019Applicant: NEC CorporationInventors: Kazuhiko ISOYAMA, Koji KIDA, Hiroki TAGATO, Yoshiaki SAKAE, Junpei KAMIMURA, Yuji KOBAYASHI, Etsuko ICHIHARA
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Publication number: 20180357976Abstract: Provided is, for example, a display control apparatus that generates display information for specifying an event occurred in an information processing system easily.Type: ApplicationFiled: December 19, 2016Publication date: December 13, 2018Applicant: NEC CorporationInventors: Etsuko ICHIHARA, Koji KIDA, Hiroki TAGATO, Yoshiaki SAKAE, Kazuhiko ISOYAMA, Junpei KAMIMURA, Yuji KOBAYASHI
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Publication number: 20180276064Abstract: The diagnosis device specifies a progression degree relating to a first information processing device for output information output by a first detection device at a first timing with respect to the first information processing device, based on device information indicates a progression degree that represents a degree to which the information processing device is abnormal with respect to the information processing device, determines whether or not information in which a first detection device identifier of the first detection device and the specified progression degree are associated with each other is included in progression-degree information in which a detection device identifier capable of identifying a detection device and the progression degree are associated with each other; and calculates the progression degree relating to the first information processing device according to the specified progression degree when the information is determined to be included in the progression-degree information.Type: ApplicationFiled: December 6, 2016Publication date: September 27, 2018Applicant: NEC CorporationInventors: Kazuhiko ISOYAMA, Koji KIDA, Hiroki TAGATO, Yoshiaki SAKAE, Junpei KAMIMURA, Yuji KOBAYASHI, Etsuko ICHIHARA
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Patent number: 9530317Abstract: A peripheral aircraft selection means maps a region in a 3D space defined by a start point of period information of the aircraft of interest, a point having the coordinate values of passage position coordinates at an end point of the period information and a lower limit arrival time, and a point having the coordinate values of passage position coordinates at the end point of the period information and an upper limit arrival time onto a 2D plane by use of a first projection matrix. The peripheral aircraft selection means then selects a peripheral aircraft which can abnormally near to the aircraft of interest by determining how the resultant region crosses with a circle whose center is a passage position of the peripheral aircraft and whose radius is a determination standard threshold as to whether abnormal nearing will occur.Type: GrantFiled: May 20, 2013Date of Patent: December 27, 2016Assignee: NEC CORPORATIONInventors: Sachio Teramoto, Koji Kida, Hiroki Tagato, Tomohito Ando
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Patent number: 9520067Abstract: Provided is an air traffic control assistance system whereby it is possible to display the reliability of an avoidance recommendation over time in a manner which is easily understood by an air traffic controller. For each combination of link information of an aircraft of interest and link information of an aircraft in the vicinity thereof, a graphic identification unit identifies a graphic which represents a prescribed range which is defined by the aircraft in the vicinity thereof, in a plane which includes a three-dimensional vector which is represented by the link information of the aircraft of interest and which is perpendicular to the x-y plane.Type: GrantFiled: March 27, 2014Date of Patent: December 13, 2016Assignee: NEC CorporationInventors: Sachio Teramoto, Tomohito Ando, Hiroki Tagato, Koji Kida