Patents Assigned to Hitachi, Ltd.
  • Patent number: 11977441
    Abstract: This failure tree generation device includes: a causal relationship storage unit that stores information indicating a linkage of the causal relationship of defects of respective component parts constituting subjects to be analyzed in a manner such that the information is associated with the connection relationship of the respective component parts; a system-level failure tree generation unit that generates, for each of the component parts and on the basis of component part constitution information indicating the constitution of component parts to be analyzed and component part connection information indicating the connection relationship of the respective component parts, first element information which is information indicating disturbance having occurred in information transfer between the respective component parts and which indicates the relationship between each of the component parts and a phenomenon having occurred on the component part, and generates, on the basis of the respective items of first elem
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: May 7, 2024
    Assignee: Hitachi, Ltd.
    Inventor: Yuuki Shimizu
  • Patent number: 11977362
    Abstract: In the conventional distributed control system, since each control device updates the data area at a timing when a control packet is received, in a case where there is a difference in communication delay between the control devices or in a case where the communication delay includes jitter, it is difficult to match the contents of data in all the control devices in a case of focusing on a certain moment during system operation. Therefore, depending on the start timing of a control application, the control application operates on the basis of different data between the control devices, thus limiting control performance improvement. Accordingly, time slots on the network are allocated according to the result of a calculation unit, and a cyclic memory synchronization update unit synchronizes the timing of reflecting data in the input/output and the cyclic memory and the timing of using data of a cyclic memory.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventors: Tatsuya Maruyama, Yusaku Otsuka, Hidenori Omiya, Toshiki Shimizu, Iori Kobayashi, Kazutaka Onishi, Noritaka Matsumoto
  • Patent number: 11977876
    Abstract: Provided is an update device capable of appropriately updating the nodes used in business processing. The update device comprises a communication control unit which instructs the load balancer to stop distribution to the first cluster, a transfer unit which instructs the first management node and the second management node to transfer the first execution node from being under management of the first management node to being under management of the second management node, and an update unit which instructs the first management node to update the first management node on grounds that the first execution node being under management of the first management node has been transferred to being under management of the second management node.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventor: Keisuke Takagi
  • Patent number: 11977765
    Abstract: The functions of a mainframe environment are expanded by leveraging the functions of an open environment.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: May 7, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Naoyuki Masuda, Ryusuke Ito, Kenichi Oyamada, Yuri Hiraiwa, Goro Kazama, Yunde Sun, Ryosuke Kodaira
  • Patent number: 11977764
    Abstract: An administrative terminal receives designation of generation target data and of a generation destination storage device and identifies data similar to the target data. The terminal calculates a first predicted time expected for transmitting the target data from a storage device holding the target data to the generation destination storage device, and a second predicted time expected to be required for a second transmission process of transmitting the similar data from an object storage service to the generation destination storage device and of transmitting difference data between the target data and the similar data from the storage device holding the target data to the generation destination storage device. If the second predicted time is shorter than the first predicted time, the administrative terminal performs the second transmission process to transmit the similar data and the difference data to the generation destination storage device to generate the generation target data therein.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: May 7, 2024
    Assignee: HITACHI, LTD.
    Inventors: Hideyuki Koseki, Akira Deguchi, Masahiro Arai
  • Publication number: 20240143300
    Abstract: A program analyzing apparatus (failure analyzing apparatus) includes an execution path reduction unit that deletes an execution path that is not executed by referring to information related to a branch destination of a conditional branch included in a program, from all execution paths that are all executable execution paths among execution paths that are columns of statements to be sequentially executed in the program.
    Type: Application
    Filed: February 15, 2022
    Publication date: May 2, 2024
    Applicant: HITACHI, LTD.
    Inventors: Hiroto Kaga, Masumi Kawakami, Yasufumi Suzuki
  • Patent number: 11972119
    Abstract: A storage system that can achieve a cryptographic operation circuit that supports multiple types of cryptographic operation formats. The cryptographic operation circuit is provided that encrypts data according to the format determined by the processor based on a request by the host terminal for writing the data into the storage device, and decrypts the encrypted data on the data stored in the storage device according to the format determined by the processor based on a request by the host terminal for reading the data from the storage device.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: April 30, 2024
    Assignee: HITACHI, LTD.
    Inventors: Shumpei Morita, Tomoyuki Kamazuka, Hideaki Monji, Yuusaku Kiyota
  • Patent number: 11971998
    Abstract: A data comparison device holds first and second encrypted data of first and second plaintext, respectively. The first plaintext is divided into a plurality of blocks and the first encrypted data is generated by executing encryption of each of the plurality of blocks and shuffling of the plurality of blocks. The second plaintext is divided into a plurality of blocks and the second encrypted data is generated by executing encryption of each of the plurality of blocks. In at least one of the first encrypted data and the second encrypted data, a plaintext value is embedded as a value indicating a magnitude comparison result, and the data comparison device compares blocks at the same position before shuffling of the first encrypted data and the second encrypted data based on the embedded value and determines a magnitude relationship between the first plaintext and the second plaintext.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: April 30, 2024
    Assignee: HITACHI, LTD.
    Inventors: Masayuki Yoshino, Ken Naganuma, Hisayoshi Sato
  • Patent number: 11972877
    Abstract: A superconducting wire connector includes superconducting wires and a sintered body containing MgB2. The superconducting wires are connected by the sintered body. At least one of the superconducting wires includes a superconducting core having a first outer surface. The sintered body is in contact with the first outer surface. A method of connecting superconducting wires by a sintered body containing MgB2 includes exposing a superconducting core of at least one of the superconducting wires by removing a portion, positioned in the middle in a longitudinal direction of the at least one of the superconducting wires, of a metal sheath disposed around the superconducting core, disposing the at least one of the superconducting wires through a container, filling the container with a raw material of MgB2, and forming the sintered body being in contact with an outer surface of the superconducting core by sintering the raw material filled in the container.
    Type: Grant
    Filed: February 26, 2021
    Date of Patent: April 30, 2024
    Assignee: HITACHI, LTD.
    Inventors: Shinji Fujita, Tsuyoshi Wakuda, Yota Ichiki, Motomune Kodama
  • Publication number: 20240137284
    Abstract: An infrastructure design system includes an infrastructure design apparatus configured to generate infrastructure design information including information regarding a server infrastructure in which an application of a solution service is installed and a wireless communication infrastructure that connects the server infrastructure with a place where the solution service is used. The infrastructure design apparatus manages provision cost information regarding each of the wireless communication infrastructure and the server infrastructure, calculates estimated latency at a time of providing the solution service, on the basis of a communication delay between a solution service usage environment and the server infrastructure and a processing delay of the application, selects a combination of the wireless communication infrastructure and the server infrastructure on the basis of the estimated latency and a provision cost, and outputs the combination as infrastructure design information.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 25, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Daisuke MASHIMO, Masayuki TAKASE
  • Patent number: 11967624
    Abstract: Abnormal generation of heat of a power MOSFET is detected to improve the reliability of a semiconductor device. As its means, in a power MOSFET having a drain electrode on the side of a back surface of a semiconductor substrate and a source pad on the side of a main surface of the semiconductor substrate, two gate pads electrically connected to a gate pad connected to a gate electrode of the power MOSFET are formed on the side of the main surface of the semiconductor substrate. Further, there is provided a voltmeter connected in parallel with each of two current paths which connect the two gate pads and a gate driver.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: April 23, 2024
    Assignee: HITACHI, LTD.
    Inventors: Naoki Tega, Digh Hisamoto, Takeru Suto
  • Patent number: 11966716
    Abstract: An information processing apparatus includes an annealing control unit, a spin interaction memory, a random number generation unit, and a spin state update unit and obtains a solution by using an Ising model. The annealing control unit controls an annealing step and a parameter of a temperature and a parameter of a self-action. The spin interaction memory stores the interaction coefficient of a spin. The random number generation unit generates a predetermined random number. The spin state update unit includes a spin buffer that stores values of a plurality of spins, an instantaneous magnetic field calculation unit that calculates instantaneous magnetic fields of the plurality of spins, a probability calculation unit that calculates update probabilities of the plurality of spins, and a spin state determination unit that updates the values of the spins based on the update probabilities and a random number.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: April 23, 2024
    Assignees: HITACHI, LTD, NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
    Inventors: Normann Mertig, Takashi Takemoto, Shinya Takamaeda, Kasho Yamamoto, Masato Motomura, Akira Sakai, Hiroshi Teramoto
  • Publication number: 20240126932
    Abstract: A design support device for performing a check of a defect suppresses defects such as rework in product design and manufacturing and appropriately proposing a criterion, which is an item to be checked in accordance with the actual situation. The design support device includes a memory that stores past subject information for a product designed in the past, thereby storing a correspondence table in which criteria indicating check items are associated, an input unit that receives input of new subject information of a product of a new subject to be checked, a priority calculation unit that calculates a priority of the criterion indicating the check item for the product of the new subject corresponding to the input new subject information, using the correspondence table, and an output unit that outputs the calculated criterion on the screen according to the priority.
    Type: Application
    Filed: February 2, 2022
    Publication date: April 18, 2024
    Applicant: Hitachi, Ltd.
    Inventor: Ichiro KATAOKA
  • Publication number: 20240126946
    Abstract: To provide a design supporting device and a design supporting method capable of presenting a specific improvement plan for solving evaluation indexes having a trade-off relationship. The design supporting device comprises: an input unit which inputs a plurality of evaluation indexes and attribute information; a retrieval unit which acquires information on cases for improvement cases using the input information; a priority order calculation unit which prioritizes the cases; and an output unit which prioritizes cases for improvement plans of evaluation indexes being in a trade-off relationship and presents the same to the outside.
    Type: Application
    Filed: September 6, 2023
    Publication date: April 18, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Yuki ITABAYASHI, Yuuki SHIMIZU
  • Publication number: 20240126747
    Abstract: A data store comprises a commit management map including an identifier of a distributed transaction. A control method executed by an adapter coupled to the data store includes: alternate processing of, temporarily storing the reception query, and causing a transaction on the data store side to execute the reception query; perpetuation processing of determining whether or not commit is possible using lock information and perpetuating the GXID to be committed and the temporarily stored reception query in a case where commit is possible; settlement processing of causing the transaction on the data store side to execute a GXID addition query that is a query that adds the GXID to be committed to the commit management map and committing the transaction on the data store side; and store restart processing of the adapter starting a new transaction at the data store for a distributed transaction in an in-doubt state.
    Type: Application
    Filed: September 12, 2023
    Publication date: April 18, 2024
    Applicant: Hitachi, Ltd.
    Inventors: Toshiyuki HASEGAWA, Nobuyuki YAMAMOTO
  • Publication number: 20240125521
    Abstract: A rotating magnetic field generation device of the present invention includes: a magnetic field generating unit including disks in which a plurality of magnets are arranged circumferentially, a magnetic field working space formed by stacking the disks at intervals to make the plurality of magnets face each other, and a shaft to which the stacked disks are fixed, the shaft being installed at a central axis of the disks; an adiabatic vacuum vessel in which the magnetic field generating unit is installed; and a drive mechanism that is installed in a room temperature region and rotates the shaft.
    Type: Application
    Filed: December 28, 2021
    Publication date: April 18, 2024
    Applicant: Hitachi, Ltd.
    Inventor: Tsuyoshi WAKUDA
  • Publication number: 20240127481
    Abstract: A sensor position calibration device includes a moving object information acquisition unit that acquires a self-position measured by a reference moving object moving in a movement area; a moving object measurement unit that measures a position of the reference moving object based on observation information of a camera; a calibration unit that calibrates position information of the camera by using the self-position of the moving object and an estimated position calculated based on the measured position and the position information of the camera; a calibration error calculation unit that calculates an error between a second estimated position and the self-position; a reliability map generation unit that, based on the error, generates a reliability map indicating reliability of position measurement in the movement area using the camera; and a moving object control unit that controls movement of the moving object by using the reliability map.
    Type: Application
    Filed: October 4, 2023
    Publication date: April 18, 2024
    Applicant: HITACHI, LTD.
    Inventors: So SASATANI, Tsuyoshi KITAMURA, Takuma OSATO, Haruki MATONO
  • Patent number: 11958513
    Abstract: A railroad car condition monitoring/analyzing includes: a car factor estimation unit configured to estimate car factor evaluation data from car data and evaluation data; an infrastructure factor extraction unit configured to extract infrastructure factor evaluation data from the car data, the evaluation data, and the car factor evaluation data; an infrastructure factor estimation unit configured to estimate individual infrastructure factor evaluation data from the infrastructure factor evaluation data; an infrastructure factor DB construction unit configured to store the individual infrastructure factor evaluation data in an infrastructure factor database; an infrastructure factor analysis unit configured to monitor the individual infrastructure factor evaluation data stored in the infrastructure factor database so as to analyze infrastructure factors; and a car analysis unit configured to analyze a car condition in consideration of analysis information on the infrastructure factor.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: April 16, 2024
    Assignee: HITACHI, LTD.
    Inventors: Takashi Yamaguchi, Ryo Furutani, Kenta Konishi
  • Patent number: 11960928
    Abstract: An event monitoring system includes a processor and a storage unit. The storage unit holds an event message including a character string related to an event occurring in an information system and guide information including one or more guides. The guide includes a guide message including a predetermined character string, notified in response to the event, and information regarding a coping method for the event. The processor compares the event message and the guide, associates the guide with the event in a case where the guide further includes information for identifying a variable portion of the guide message and a portion other than the variable portion of the guide message coincides with a portion other than a portion corresponding to the variable portion in the event message, and receives an input of information indicating a correct answer of a guide to be associated with the event in a case where the guide does not include the information for identifying the variable portion.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: April 16, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Taku Okamura, Takashi Tameshige, Mitsuhiro Nagata, Hideto Kurose, Mineyoshi Masuda
  • Patent number: D1024961
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: April 30, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuya Suto, Akihiro Namba, Akeshi Takahashi, Makoto Ito