Patents by Inventor Kohei Maruchi

Kohei Maruchi 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).

  • Patent number: 11921162
    Abstract: According to one embodiment, the information processing device includes: a first state estimator configured to estimate a state of a target rechargeable battery based on: first data including a charge amount and voltage value of a rechargeable battery; information including a state of the rechargeable battery; and second data including a charge amount and voltage value of the rechargeable battery.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: March 5, 2024
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hisaaki Hatano, Takahiro Yamamoto, Kohei Maruchi, Kenichi Fujiwara, Masatake Sakuma
  • Publication number: 20230417839
    Abstract: According to one embodiment, an information processing apparatus, includes: processing circuitry configured to calculate, based on measured data of a voltage value and a charge amount of a rechargeable battery which is controlled for charge/discharge according to a charge/discharge command value, first information indicating a change of the voltage value with respect to the charge amount; and acquire second information indicating a reference change of a voltage value with respect to a charge amount in accordance with a range of the voltage values in the measured data and estimate a state of the rechargeable battery based on the first information and the second information.
    Type: Application
    Filed: September 8, 2023
    Publication date: December 28, 2023
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takahiro YAMAMOTO, Kohei MARUCHI, Hisaaki HATANO, Yasuhiro OGURA, Koji TOBA, Kenji MITSUMOTO
  • Publication number: 20220260646
    Abstract: An information processing apparatus includes: an SoH calculator to calculate an SoH (State of Health) for each of a plurality battery units on the basis of measurement data related to an electric power applied to each of the plurality of battery units in a rechargeable battery; a maximum/minimum voltage SoH calculator to calculate a maximum/minimum voltage SoH which is an SoH based on a maximum voltage and a minimum voltage in voltages applied to a plurality of cells or a plurality of battery subunits in the battery unit for each of the plurality of battery units on the basis of the measurement data; and an SoH ratio calculator to calculate an SoH ratio which is a ratio of the maximum/minimum voltage SoH to the SoH for each of the plurality of battery units on the basis of the calculated SoH and the calculated maximum/minimum voltage SoH.
    Type: Application
    Filed: March 14, 2022
    Publication date: August 18, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takahiro YAMAMOTO, Hisaaki HATANO, Kohei MARUCHI, Kenji MITSUMOTO
  • Patent number: 11379493
    Abstract: An apparatus as an aspect of the present invention is a factor analysis apparatus that analyzes a relationship between a target event that is a target of factor analysis and an assumed factor of the target event, and includes a similarity calculator, a first influence calculator, and a second influence calculator. The similarity calculator calculates a degree of similarity between a data item included in provided time-series data and the assumed factor. The first influence calculator calculates a first degree of influence indicating a degree of influence of the data item on the target event on the basis of time-series data of the data item and time-series data of the target event. The second influence calculator calculates a second degree of influence indicating a degree of influence of the assumed factor on the target event on the basis of the degree of similarity and the first degree of influence.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 5, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sayaka Akiyama, Kohei Maruchi, Masatake Sakuma
  • Publication number: 20210405120
    Abstract: According to one embodiment, the information processing device includes: a first state estimator configured to estimate a state of a target rechargeable battery based on: first data includes a charge amount and voltage value of a rechargeable battery; information including a state of the rechargeable battery; and second data including a charge amount and voltage value of the rechargeable battery.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 30, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hisaaki HATANO, Takahiro YAMAMOTO, Kohei MARUCHI, Kenichi FUJIWARA, Masatake SAKUMA
  • Publication number: 20210178927
    Abstract: There is provided a rechargeable battery evaluation device including: a charging controller configured to switch charging current of a rechargeable battery being charged with first current to second current; and a first state estimator configured to estimate a state of the rechargeable battery based on a feature of change in at least one of a voltage and a charging amount of the rechargeable battery due to switching from the charging current to the second current.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiro YAMAMOTO, Kaoru KOIWA, Hisaaki HATANO, Kenichi FUJIWARA, Kohei MARUCHI, Koji TAKAZAWA, Yoshiyuki ISOZAKI, Shun EGUSA, Tomokazu MORITA
  • Publication number: 20200311576
    Abstract: A time series data analysis method, includes: generating a plurality of first feature vectors including feature amounts of a plurality of feature waveforms, based on distances from a plurality of first time series data sequences to the plurality of feature waveforms, the first time series data sequences belonging to a first class; generating a plurality of second feature vectors including feature amounts of the plurality of feature waveforms, based on distances from a plurality of second time series data sequences to the plurality of feature waveforms, the plurality of second time series data sequences belonging to a second class; and updating the plurality of feature waveforms, based on the plurality of first feature vectors, the plurality of second feature vectors, a performance indicator parameter related to a performance indicator for a classification model and a model parameter including weights on the plurality of feature waveforms.
    Type: Application
    Filed: March 11, 2020
    Publication date: October 1, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihiro YAMAGUCHI, Shigeru MAYA, Kohei MARUCHI, Tatsuya INAGI
  • Publication number: 20190050460
    Abstract: An apparatus as an aspect of the present invention is a factor analysis apparatus that analyzes a relationship between a target event that is a target of factor analysis and an assumed factor of the target event, and includes a similarity calculator, a first influence calculator, and a second influence calculator. The similarity calculator calculates a degree of similarity between a data item included in provided time-series data and the assumed factor. The first influence calculator calculates a first degree of influence indicating a degree of influence of the data item on the target event on the basis of time-series data of the data item and time-series data of the target event. The second influence calculator calculates a second degree of influence indicating a degree of influence of the assumed factor on the target event on the basis of the degree of similarity and the first degree of influence.
    Type: Application
    Filed: February 20, 2018
    Publication date: February 14, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Sayaka AKIYAMA, Kohei Maruchi, Masatake Sakuma
  • Publication number: 20190012553
    Abstract: According to one embodiment, a diagnostic device includes an anomaly diagnoser and a graph creator. The anomaly diagnoser performs anomaly diagnosis based on first measured data. The graph creator determines parameter information for graph production in accordance with a result of the anomaly diagnosis and creates a first graph from the first measured data based on the parameter information.
    Type: Application
    Filed: March 5, 2018
    Publication date: January 10, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Kohei MARUCHI, Topon PAUL, Genta KIKUCHI, Sayaka AKIYAMA
  • Publication number: 20160154903
    Abstract: According to this embodiment, an information processor comprises an electrical connection relation generating unit which generates an electrical connection relation of a plurality of components by adjusting the electrical connection relation of the components determined by the number of connections which each component can make with other components and a kind of the components of each hierarchy, based on the number of the components of a predetermined kind that can be arranged in a given space and an electrical permissible amount of the component in a top layer of the hierarchy. The information processor comprises a spatial arrangement determining unit which determines spatial arrangement of the components of the predetermined kind, based on the electrical connection relation generated by the electrical connection relation generating unit and rules of the spatial arrangement of the components.
    Type: Application
    Filed: January 29, 2016
    Publication date: June 2, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Gaku ISHII, Kohei MARUCHI, Mikito IWAMASA
  • Publication number: 20150269292
    Abstract: An insolation information generating device has a mesh generator to generate meshes by projecting a solar trajectory on a celestial sphere onto a plurality of mesh positions on a two-dimensional plane, a solar position calculator to calculate a solar position, a feature road shape storage to store three-dimensional information on feature and road shapes, a feature road shape acquisition module to acquire three-dimensional information of a feature and a road located around each of a plurality of regions of interest, an insolation information calculator to determine whether sunlight from each solar position calculated by the solar position calculator is blocked by a feature acquired by the feature road shape acquisition module to calculate at least either one of a sunny ratio and a shady ratio, and an insolation information storage to store each mesh position and at least either one of the corresponding sunny ratio and shady ratio.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 24, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromasa SHIN, Kohei Maruchi, Yusuke Endoh, Yoshiaki Hasegawa
  • Publication number: 20150198739
    Abstract: An insolation calculating device has a 3D model acquisition module to acquire a 3D model of an area around a target location to calculate insolation, a routing information acquisition module to acquire routing information about the area around the location, a main routing information extractor to acquire main routing information including a plurality of representative points from the routing information acquired by the routing information acquisition module, a sky diagram generator to generate a sky diagram at each of the representative points, the sky diagram being generated as two-dimensional image data corresponding to a shot image of the whole sky, a representative point insolation calculator to calculate representative point insolation showing insolation at each of the representative points, and a route insolation calculator to calculate insolation of each route connecting two adjacent representative points in the representative points.
    Type: Application
    Filed: January 13, 2015
    Publication date: July 16, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yusuke ENDOH, Hiromasa SHIN, Mikito IWAMASA, Kohei MARUCHI, Masahiro SAKAI
  • Publication number: 20090172643
    Abstract: A program verification apparatus includes: a program executing unit executing a program; a variable monitoring unit monitoring a plurality of variables in the program to obtain monitor values of the variables; a target variable determiner determining one or more target variables out of the variables; a constraint condition storage storing a first constraint condition that defines a constraint to be satisfied for each of the target variables and a second constraint condition that defines a constraint to be satisfied among the target variables; a state acquiring unit sequentially acquiring target program state each of which is a combination of monitor values of the target variables at same time respectively; a state generating unit generating an unreached target program state which has not been acquired yet and satisfies the first and second constraint conditions; and a state setting unit setting the unreached target program state to the program.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kohei Maruchi, Yoshio Kataoka, Masahiro Sakai
  • Patent number: 7477477
    Abstract: There is provided with command execution method, including; detecting a use situation of a non-volatile memory; selecting, when the use situation is low, the command which enables the disk head to be located at a start position of writing or reading most rapidly from among the write commands and the read commands assuming that the disk head performs the fast seek for the write command and the slow seek for the read command; selecting, when the use situation of the non-volatile memory is high, the command which enables the disk head to be located at the start position of writing or reading most rapidly from among the write commands and the read commands assuming that the disk head performs the slow seek.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: January 13, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kohei Maruchi, Shinji Takakura, Mitsunobu Yoshida, Toshikatsu Akiba, Hiroaki Nakamura
  • Publication number: 20080291568
    Abstract: A magnetic disk apparatus includes: a driving unit; a position error feedback control system; and a velocity control system. The driving unit is configured to move a magnetic head operative for magnetic recording/reproduction of information on a magnetic disk. The position error feedback control system is configured to perform feedback control of the driving unit based on difference between target track position and detected position of the magnetic head. The velocity control system is configured to vary a target velocity curve based on position of the magnetic head before motion, the target track position of the magnetic head, and position of a data sector to be subjected to recording/reproduction, for using a control mathematical model of the driving unit to control the driving unit so that velocity of the driving unit follows the target velocity curve.
    Type: Application
    Filed: February 4, 2008
    Publication date: November 27, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinji Takakura, Kohei Maruchi, Mitsunobu Yoshida
  • Publication number: 20080144209
    Abstract: There is provided with command execution method, including; detecting a use situation of a non-volatile memory; selecting, when the use situation is low, the command which enables the disk head to be located at a start position of writing or reading most rapidly from among the write commands and the read commands assuming that the disk head performs the fast seek for the write command and the slow seek for the read command; selecting, when the use situation of the non-volatile memory is high, the command which enables the disk head to be located at the start position of writing or reading most rapidly from among the write commands and the read commands assuming that the disk head performs the slow seek.
    Type: Application
    Filed: September 20, 2007
    Publication date: June 19, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kohei Maruchi, Shinji Takakura, Mitsunobu Yoshida, Toshikatsu Akiba, Hiroaki Nakamura