Patents Assigned to Hitachi, Ltd.
  • Patent number: 10989733
    Abstract: Provided are acceleration sensor, geophone and seismic prospecting system with high sensitivity and low power consumption. The acceleration sensor includes a mass body displaceable with respect to a rotation shaft. The acceleration sensor includes a first AC servo control facing a first symmetrical region of the first movable portion, a second AC servo control electrode facing a second symmetrical region of the second movable portion, and a DC servo control electrode facing an asymmetrical region of the second movable portion. A first AC servo capacitive element is formed by the first movable portion and the first AC servo control electrode, a second AC servo capacitive element is formed by the second movable portion and the second AC servo control electrode, and a DC servo capacitive element is formed by the second movable portion and the DC servo control electrode.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Yuudai Kamada, Atsushi Isobe, Noriyuki Sakuma, Takashi Shiota, Chisaki Takubo
  • Patent number: 10990085
    Abstract: A machine-tool-state determination system configured to determine a state associated with a machine tool including a rotation mechanism for processing a member, the system including: a sensor configured to acquire a state value from the machine tool; and an analysis device, in which the analysis device: performs spectral analysis with time series data of the state value, to extract a rotational frequency of the rotation mechanism and a harmonic wave to the rotational frequency; calculates a ratio of an amplitude of the rotational frequency to an amplitude of the harmonic wave; generates feature-amount data including the state value and the ratio as feature amounts; performs clustering with the feature-amount data; and determines a state associated with the machine tool, based on a result of the clustering.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Kenji Otsu, Keiji Watanabe, Hisanori Matsumoto
  • Patent number: 10990313
    Abstract: In a multi-storage node system including a plurality of storage nodes, a plurality of storage nodes include a plurality of drives that store data and a control unit that controls writing of data to the drives. The control unit divides storage areas of the plurality of drives into a plurality of physical chunks, allocates the divided physical chunks to logical chunks, and stores data. A plurality of storage nodes are divided into fault sets affected by a single failure and manage the multi-storage node system. The control unit of one primary node that manages the multi-storage node system among a plurality of storage nodes includes a database for managing allocation of the physical chunks of a plurality of storage nodes to the logical chunks for each drive, each storage node, or for each fault set.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Akihiro Kikuchi, Takayuki Fukatani
  • Patent number: 10990917
    Abstract: A system, which is configured to generate an action for controlling a business to be carried out by a business operation system, the system is configured to: obtain business data including a plurality of attributes relating to the business from the business operation system; identify target data to be analyzed based on a distribution of a relevant indicator; analyze the target data, to thereby calculate an awareness feature, which is likely to contribute to improvement of the business evaluation indicator; generate an action for improving the business evaluation indicator based on the awareness feature.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Toshiyuki Ukai, Yasuharu Namba
  • Patent number: 10990305
    Abstract: A storage apparatus includes: a plurality of controllers, each of which has a plurality of processors for processing requests; a storage device coupled to the controller; an integration unit that integrally controls the plurality of controllers; and a shared memory that can be accessed from each processor for the plurality of controllers and stores configuration information of the storage apparatus including load information of each processor. The integration unit: calculates estimated processing time of a configuration management request, which has been accepted from a management apparatus, from a request type and a target resource type of the configuration management request; and distributes the configuration management request to a plurality of distribution requests on the basis of the load information of each processor acquired from the shared memory and the estimated processing time, determines a distribution destination processor for processing each of the plurality of distribution requests.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Ryosuke Yabu, Shinichiro Kanno
  • Patent number: 10989700
    Abstract: A purpose of the present invention is to provide a temperature history indicator that allows for visual confirmation of whether the temperature is at or below a prescribed temperature as well as simple conversion of this information into data. A temperature history indicator according to the present invention is characterized by being provided with a label layer and a temperature-indicating layer laminated above or below the label layer, wherein the temperature-indicating layer includes a substance having at crystallization starting temperature of 10° C. or lower and a melting point at least 20° C. higher than the crystallization starting temperature.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: April 27, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Sukekazu Aratani, Hiroshi Sasaki, Toyotaka Yuasa, Kohhei Aida, Yasuhiko Tada, Masahiro Kawasaki
  • Patent number: 10989220
    Abstract: A casing of a turbo machine includes a casing body having an inner space; an intake nozzle which is disposed on the casing body and through which a fluid is taken into the casing body; and a straightening vane disposed in the intake nozzle and having opposite ends located in a diameter direction of the intake nozzle. Only one of the opposite ends of the straightening vane is joined to an inner surface of the intake nozzle.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: April 27, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Yohei Tanno, Tomohiro Naruse, Takeshi Kazama, Ryuhei Tsukahara
  • Patent number: 10989428
    Abstract: A performance diagnosis device for an air conditioner includes: a data collection unit that collects and records operation data on the air conditioner; an equipment characteristic database that is a data group covering operation conditions meeting the specifications of the air conditioner; a reference data creation unit that calculates individual characteristic curved surface data by using the operation data possessed by the data collection unit and the equipment characteristic database; and a performance evaluation unit that compares part of the operation data possessed by the data collection unit with the individual characteristic curved surface data to evaluate the performance of the air conditioner, in which the individual characteristic curved surface data is corrected with respect to the equipment characteristic database so as to correspond to the operation data possessed by the data collection unit.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: April 27, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Yoko Kokugan, Hiroshi Kusumoto, Tatsuo Fujii
  • Patent number: 10991529
    Abstract: An object is to enhance direct-current insulating performance of a gas-blast circuit breaker. The gas-blast circuit breaker includes: a pair of main contacts disposed in a gas tank to face each other and configured to operate for opening and closing a circuit; a pair of arc contacts disposed to face each other and configured to operate for opening and closing the circuit, the arc contacts being disposed coaxially with the main contacts at locations close to the centers of the main contacts, respectively; and an elastic electrically conductive material disposed on an outer surface of an insulating nozzle facing an inner surface of one of the main contacts.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: April 27, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Hideyuki Kotsuji, Jun Nukaga, Makoto Hirose, Takahiro Nishimura
  • Patent number: 10992788
    Abstract: According to an aspect of the present invention, a modeling method of a semantic gateway is provided, which includes: inputting a plurality of protocol data from a plurality of devices that each use a different protocol to the semantic gateway; performing, at the semantic gateway, a protocol analysis and syntax induction on the inputted plurality of protocol data respectively, to obtain a plurality of protocol ontology instances corresponding to the plurality of protocol data; performing, at the semantic gateway, a semantic query and matching operation for the plurality of protocol ontology instances using a dictionary library and a model ontology library to obtain a plurality of model ontologies corresponding to the plurality of protocol ontology instances; and merging, at the semantic gateway, the plurality of model ontologies to generate a generic model.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventor: Zhirong Zeng
  • Patent number: 10990491
    Abstract: An I/O result receiving unit receives, from a storage device control unit, a result of I/O to a logical device with respect to an I/O request from an I/O control unit, a format target determining unit considers a failed track to be a format target when the failed track corresponds to a control area or an unallocated area, and a format requesting unit requests the storage device control unit to format a storage area of storage devices which corresponds to a page allocated to the failed track having been considered a format target.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Ryo Tamaki, Shintaro Ito, Toshiaki Terao
  • Patent number: 10992909
    Abstract: A video recording device includes: a camera which captures a video of a visual-field direction of a wearer; a connection part which is communicably connected to an external sensor which detects predetermined environment information; a threshold information storage part which stores a threshold indicating an abnormal state of the environment information; a determination part which outputs an abnormality determination signal by comparing detection information of the external sensor and the threshold; a control part which outputs a predetermined control signal to the camera in response to the abnormality determination signal; and a display part which displays output information from the camera and the external sensor. When the abnormality determination signal is output, the control part outputs a control signal for transferring output information from the camera to a predetermined storage part.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: April 27, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Yamamoto, Chiyo Ohno, Koji Yamasaki
  • Patent number: 10990468
    Abstract: A computing system that can maintain reliability required of a storage program while causing the storage program to operate on an operating system (OS) is provided. A processor of the computing system executes an OS controlling a hardware device and a storage program operating on the OS and using the hardware device via the OS. The OS identifies an error status of the hardware device when receiving a notification of an error that has occurred to the hardware device, and notifies the storage program that operates on the OS of the error status when the error status satisfies a predetermined condition. The storage program determines error handling on the hardware device on the basis of the error status, and requests the OS to perform the determined error handling. The OS performs the determined error handling on the hardware device.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: April 27, 2021
    Assignee: HITACHI, LTD.
    Inventors: Akihiko Araki, Masakuni Agetsuma, Sachie Tajima, Takanobu Suzuki, Masanori Takada
  • Patent number: 10989632
    Abstract: An object of the invention is to improve uniformity of a standard sample used for evaluating a gas flow type analysis system. The invention includes weighing a background into a container; adding a sample solution to the background; drying the sample solution; adding a solvent that can dissolve the sample into the container; and drying the solvent added to the container. The invention is also characterized in that the solvent is an organic solvent, in particular, acetone.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: April 27, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Yasuaki Takada, Shun Kumano, Masuyuki Sugiyama, Hisashi Nagano, Tatsuo Nojiri, Hiroki Mizuno, Yuichiro Hashimoto
  • Publication number: 20210116523
    Abstract: Provided is a noise source search device to be applied to an MM apparatus that obtains an NMR signal generated from a subject disposed in a static magnetic field by applying an RF pulse of a high frequency coil and a gradient magnetic field pulse of a gradient magnetic field coil to the subject, the device including: a reference antenna and a probe antenna that measure a noise generated in the MRI apparatus; a noise generation condition specification unit that specifies an axis and a drive frequency as a noise generation condition generated in the MRI apparatus, on the basis of a noise intensity of the noise that is measured by the reference antenna; and a noise generation site specification unit that drives the gradient magnetic field coil under the noise generation condition that is specified by the noise generation condition specification unit.
    Type: Application
    Filed: August 3, 2018
    Publication date: April 22, 2021
    Applicant: HITACHI, LTD.
    Inventor: Takeshi Yatsuo
  • Patent number: 10983013
    Abstract: The present invention addresses the problem of providing a temperature sensing body capable of sensing both a temperature increase and a temperature decrease, and having an anti-tampering function. In order to solve said problem, this temperature sensing body is characterized by including: a first ink in which a temperature Ta1 for initiating color disappearance when the temperature rises and a temperature Td1 for initiating color development when the temperature falls are different; and a second ink in which a temperature Ta2 for initiating color disappearance when the temperature rises and a temperature Td2 for initiating color development when the temperature falls are different, wherein the temperature Ta1 for initiating color disappearance, the temperature Td1 for initiating color development, the temperature Ta2 for initiating color disappearance, and the temperature Td2 for initiating color development have the relationship, Td1<Td2<Ta1<Ta2.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: April 20, 2021
    Assignee: HITACHI, LTD.
    Inventors: Yasuhiko Tada, Masahiro Kawasaki, Kohhei Aida, Hiroshi Sasaki, Toyotaka Yuasa, Hiroyuki Kagawa
  • Patent number: 10983720
    Abstract: A storage system is configured to include a plurality of storage nodes, and includes a selection unit which selects a storage node required for setting a data protection level after conversion from among the plurality of storage nodes on the basis of information related to the conversion of the data protection level. The storage node selected by the selection unit manages data using the data protection level after conversion.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: April 20, 2021
    Assignee: HITACHI, LTD.
    Inventors: Masakuni Agetsuma, Takahiro Yamamoto, Hideo Saito, Takaki Nakamura, Takeru Chiba, Hiroto Ebara
  • Patent number: 10986006
    Abstract: A performance analysis method of a computer system using a management computer. The management computer includes: a processor; and a memory device in which a program to be executed by the processor is stored. The computer system is constituted by a plurality of resources. The processor divides the plurality of resources into a plurality of resource groups based on a correlation of changes in performance data between the resources, and analyzes the performance data for each of the divided resource groups.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: April 20, 2021
    Assignee: HITACHI, LTD.
    Inventors: Atsumi Terayama, Shinichi Hayashi
  • Patent number: 10983051
    Abstract: To provide a reaction system capable of analyzing a liquid sample with high accuracy. To provide a reaction system A including: a reaction vessel 1, a flow channel 2 including a deformable unit 22 having an elastic member, a pump 3, a flow channel deformation mechanism 4, a measurement unit 5 and an analysis unit 6, wherein the measurement unit 5 includes a light source unit 52 and a light receiving unit 54, the flow channel deformation mechanism 4 includes an operation unit 42 for deforming the deformable unit 22 of the flow channel 2 such that a cross-sectional area of the deformable unit 22 is reduced, and the analysis unit 6 is electrically or physically connected to the measurement unit 5 and the flow channel deformation mechanism 4, and operates the flow channel deformation mechanism 4 based on a measurement result obtained by the measurement unit 5.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: April 20, 2021
    Assignee: HITACHI, LTD.
    Inventors: Takuya Kambayashi, Toshimitsu Noguchi, Shunsuke Kono
  • Patent number: 10982981
    Abstract: This marking system is provided with: a marking device which has a marking unit which gives a mark for managing the quality of a product, a housing part which houses one or more temperature indicating materials, and a providing unit which provides, to the marking unit, a temperature indicating material selected by the housing part; and a control device which has a storage unit that stores temperature-indicating material information on a developing temperature or/and a decoloring temperature of each of the temperature-indicating materials included in the housing part; and a processing unit that acquires, from a server or an input unit, an appropriate temperature of the product, selects, on the basis of the acquired appropriate temperature of the product and the temperature-indicating material information, a temperature-indicating material, and notifies the providing unit of details of providing the selected temperature-indicating material.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: April 20, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Shunsuke Mori, Kohhei Aida, Masahiro Kawasaki, Yuya Tokuda