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公开(公告)号：US11346867B2
公开(公告)日：2022-05-31
申请号：US16961417
申请日：2018-01-17
Applicant: NEC Corporation
Inventor： Shigeru Koumoto
Abstract: A measurement apparatus that measures a facility of a measurement target and that is able to transmit measurement data as intermittent data and an analysis apparatus. An analysis apparatus includes: a communication part that receives the intermittent data from the measurement apparatus; and an analysis part that estimates a standard data pattern serving as a reference, based on a common portion between a pair of the data in a set of the intermittent data received and determines presence of an anomaly for intermittent data of a determination target received from the measurement apparatus by referring to the standard data pattern.
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公开(公告)号：US10712374B2
公开(公告)日：2020-07-14
申请号：US15562540
申请日：2016-01-08
Applicant: NEC CORPORATION
Inventor： Takahiro Toizumi , Eisuke Saneyoshi , Ryota Suzuki , Shigeru Koumoto
Abstract: As means for solving the above-described problem, there is provided a data processing device (1) including a measurement data acquisition unit (10) that acquires measurement data indicating a temporal change in at least one of current consumption and power consumption of an electrical apparatus, a reference component extraction unit (20) that extracts a reference component of the current consumption and a reference component of the power consumption from the measurement data, and a feature value acquisition unit (30) that acquires a feature value of each reference component.
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公开(公告)号：US09859486B2
公开(公告)日：2018-01-02
申请号：US14414969
申请日：2013-04-15
Applicant: NEC Corporation
Inventor： Akihiro Kirihara , Masahiko Ishida , Shigeru Koumoto
IPC: H01L35/28 , H01L35/30 , H01L35/12 , H01L37/00 , H01L35/00 , H01L43/06 , H01L35/04 , H01L35/34 , H01L43/04 , H01L43/14
CPC classification number: H01L37/00 , H01L35/00 , H01L35/04 , H01L35/34 , H01L43/04 , H01L43/06 , H01L43/065 , H01L43/14
Abstract: A thermoelectric conversion element includes a thermoelectric conversion sheet possessing flexibility. The thermoelectric conversion sheet includes a magnetic layer, an electricity-generating layer that is formed on the magnetic layer so as to contact with the magnetic layer and that is formed of a material exhibiting spin orbit coupling, and a first electrode and a second electrode formed on the electricity-generating layer so as to contact with the electricity-generating layer. The first electrode and the second electrode extend in a longitudinal direction of the thermoelectric conversion sheet, and are separated from each other in a first direction perpendicular to the longitudinal direction.
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公开(公告)号：US11586703B2
公开(公告)日：2023-02-21
申请号：US16965742
申请日：2018-02-08
Applicant: NEC Corporation
Inventor： Ryota Suzuki , Shingo Takahashi , Murtuza Petladwala , Shigeru Koumoto
Abstract: A feature transformation apparatus includes at least a combination storage part that stores a combination with respect to a set of features, wherein data is approximately represented as a sum of the combination of the features; and a transformation part that transforms at least the combination so as not to change the sum of the combination of the set of features.
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公开(公告)号：US11409591B2
公开(公告)日：2022-08-09
申请号：US16769752
申请日：2018-06-28
Applicant: NEC Corporation
Inventor： Ryota Suzuki , Shigeru Koumoto
IPC: G06F11/07
Abstract: An anomaly determination apparatus, an anomaly determination method, and a program, capable of easily determining whether or not an anomaly has occurred are provided. An anomaly determination apparatus (1) includes a transformation unit (2) and an anomaly determination unit (3). The transformation unit (2) performs a transformation process using a transform function for transforming an anomaly level of a signal into a probability variable value, the probability variable value being a variable value in accordance with a predetermined probability distribution. Note that the transform function is a monotone function. The anomaly determination unit (3) determines presence/absence of an anomaly of a sample of the anomaly level by using a result of the transformation by the transformation unit (2).
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Patent Agency Ranking
公开(公告)号：US10750251B2
公开(公告)日：2020-08-18
申请号：US15754366
申请日：2016-08-03
Applicant: NEC Corporation
Inventor： Takahiro Toizumi , Ryota Suzuki , Eisuke Saneyoshi , Shigeru Koumoto
Abstract: Provided is an information providing apparatus (10) including a reliability determination unit (11) that determines a reliability of an inference result obtained by inferring an operation state of a monitored electric device group, on the basis of time-series measurement data and training data, the time-series measurement data including any one of current consumption and power consumption of the monitored electric device group and the training data associating each of a plurality of the operation states which can be assumed by the electric device group with a feature value of each of the plurality of operation states, and an output unit (12) that outputs information related to the reliability.
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公开(公告)号：US11755448B2
公开(公告)日：2023-09-12
申请号：US17263728
申请日：2021-01-27
Applicant: NEC Corporation
Inventor： Murtuza Petladwala , Shingo Takahashi , Shigeru Koumoto
IPC: G06F11/34 , G06F11/30 , G06F18/214
CPC classification number: G06F11/3419 , G06F11/3006 , G06F11/3447 , G06F11/3452 , G06F18/214 , G06F2201/86
Abstract: Provided an apparatus configured to calculate a periodicity of time series data, generate a plurality of subsequences, from the time series data, a length of each subsequence set to the periodicity, calculate feature values of the plurality of subsequences; categorize the plurality of subsequences, based on the feature values thereof, into one or more groups, find a periodicity of the subsequences belonging in common to one group, based on an occurrence order of the subsequences belonging in common to the one group and perform missing event detection by identifying the subsequence, occurrence of which is expected according to the periodicity of the subsequences belonging in common to the one group, but not found.
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公开(公告)号：US11635454B2
公开(公告)日：2023-04-25
申请号：US16635282
申请日：2017-08-03
Applicant: NEC Corporation
Inventor： Murtuza Petladwala , Ryota Suzuki , Shigeru Koumoto
Abstract: Provided an apparatus that receives time series data from a data storage unit storing time series of sample data or feature values calculated from the sample data, computes a measure indicating change and repetition characteristics of the time series data, based on sample value distribution thereof, selects a state model structure to be used for model learning and estimation, from state models including a fully connected state model and a one way direction state model, based on the measure and stores the selected state model in a model storage unit.
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公开(公告)号：US11501388B2
公开(公告)日：2022-11-15
申请号：US16344881
申请日：2017-10-30
Applicant: NEC Corporation
Inventor： Eisuke Saneyoshi , Shigeru Koumoto , Akira Shoujiguchi , Rie Iwasaki , Takahiro Toizumi , Ryota Suzuki
IPC: G06Q50/04 , G05B19/406 , G06Q10/06 , G06Q10/00
Abstract: There are provided a repair determination section that determines, based on failure information on the facility for manufacturing a product, a repair time required to repair the facility, and a recovery plan creation section that creates a recovery plan in accordance with a predetermined production evaluation indicator, based on the repair time and production information on a line with the failed facility, one or more other facilities, and on one or more other lines.
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公开(公告)号：US11237584B2
公开(公告)日：2022-02-01
申请号：US16326963
申请日：2017-08-17
Applicant: NEC Corporation
Inventor： Takahiro Toizumi , Ryota Suzuki , Shigeru Koumoto
Abstract: A state change feature value relating to power supply current waveform data is extracted, and a transition state is detected, for a section of the waveform data, based on a magnitude of a state change feature value extracted.
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