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公开(公告)号：US12260090B2
公开(公告)日：2025-03-25
申请号：US18104145
申请日：2023-01-31
Applicant: Hitachi, Ltd.
Inventor： Tomohiro Kawaguchi
IPC: G06F3/06
Abstract: Systems and methods described herein can involve, responsive to a request of a volume requiring remote copy, checking an IO throughput setting of the volume; using network bandwidth based on the IO throughput setting of the volume; and for the use of the network bandwidth not exceeding total remote copy network resources allocated for existing volumes configured with remote copy and the volume requiring remote copy, establishing a remote copy relationship for the volume in response to the request.
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公开(公告)号：US20250088157A1
公开(公告)日：2025-03-13
申请号：US18586906
申请日：2024-02-26
Applicant: Hitachi, Ltd.
Inventor： Masahiro MASUNAGA , Shinji NOMOTO , Ryo KUWANA , Isao HARA
IPC: H03F3/45
Abstract: Provided is a semiconductor device including: an amplifier configured by an element made of silicon carbide, and including a differential amplifier circuit that amplifies an input signal; and a power supply circuit that supplies a voltage to the amplifier. Here, the voltage fluctuation amount reduction circuit is inserted between the power supply circuit and the amplifier. As a result, it possible to appropriately eliminate an influence of drift when the amplifier is configured by a semiconductor made of silicon carbide.
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公开(公告)号：US12249828B2
公开(公告)日：2025-03-11
申请号：US18021644
申请日：2021-05-07
Applicant: Hitachi, Ltd.
Inventor： Akira Kikuchi , Akihiko Kanouda
Abstract: Provided is a power conversion device that can be realized with a small circuit and is capable of stably converting AC power inputted from a three-phase power source system into DC power. In a power conversion device: an output terminal of a common converter cell in a J-numbered stage is connected, together with output terminals of common converter cells of the other two phases, to common lines; an output terminal of an independent converter cell in a K-numbered stage is connected to independent lines independently of converter cells of the other two phases; and a plurality of switches comprise a common switch for switching the connection relationship between the common lines and DC buses, and an independent switch for switching the connection relationship between the independent lines and DC buses.
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24.发明授权公开(公告)号：US12248769B2
公开(公告)日：2025-03-11
申请号：US18547873
申请日：2022-02-15
Applicant: HITACHI, LTD.
Inventor： Hiroto Kaga , Masumi Kawakami , Yasufumi Suzuki
IPC: G06F8/41
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.
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公开(公告)号：US12248408B2
公开(公告)日：2025-03-11
申请号：US17938996
申请日：2022-09-07
Applicant: Hitachi, Ltd.
Inventor： Tatsuya Hirai , Hideo Saito
Abstract: When having detected that key data set to an accelerator by command information is not key data permitted to use, a monitor unit issues, to a storage control unit, a suspension request for suspending processing related to writing of data, a compute unit having received an instruction from an application program reads data from the storage device, encrypts read data using the accelerator, and issues, to the storage control unit, an instruction to write encrypted data to the storage device, and when having received the suspension request, the storage control unit suspends processing related to writing of data to the storage device.
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Patent Agency Ranking
公开(公告)号：US20250077360A1
公开(公告)日：2025-03-06
申请号：US18601179
申请日：2024-03-11
Applicant: Hitachi, Ltd.
Inventor： Mitsuo HAYASAKA , Yuto KAMO , Akira YAMAMOTO
Abstract: When the latest data and a backup of the latest data are infected, the data is recovered from the backup older than the data. Therefore, it is necessary to eliminate a difference from the latest data, leading to loss of business opportunities. A data recovery system that recovers data stored in a storage system includes a storage device that holds original data, an analyzing server that holds a copy of the original data, and generates formatted data by formatting the copy data for analysis, a managing server that holds the copy data and data history management information storing a history of the formatted data, and a data recovery unit that refers to the data history management information, selects the copy data or the formatted data as recovery data, and recovers the data from the selected recovery data when a security threat is detected in the data.
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公开(公告)号：US20250075266A1
公开(公告)日：2025-03-06
申请号：US18765470
申请日：2024-07-08
Applicant: Hitachi, Ltd.
Inventor： Junko TANAKA , Tatsuo NAKAGAWA
IPC: C12Q1/6851 , C12Q1/6818
Abstract: The present invention relates to a DNA detection method and a DNA detection kit for analyzing a gene, and more specifically, to a DNA detection method and a DNA detection kit for detecting a gene using a fluorescent-labeled probe.
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公开(公告)号：US20250070636A1
公开(公告)日：2025-02-27
申请号：US18722001
申请日：2022-10-21
Applicant: HITACHI, LTD.
Inventor： Hangxian GAO , So WATANABE , Hiroshi SUZUKI
Abstract: The present invention adjusts the surge voltage of a switching element to a prescribed value or lower while reducing switching loss in accordance with an operation condition. The present invention includes a gate driving circuit unit that drives a semiconductor switching element and a feedback current control unit that applies, to a gate G of the semiconductor switching element, a feedback current which is calculated by multiplying the change rate of electricity applied by the gate driving circuit unit to the semiconductor switching element by a prescribed gain, in which the change rate of electricity is the time change rate of the voltage and/or current applied to the semiconductor switching element; and the feedback current control unit adjusts the surge voltage of the semiconductor switching element by changing the gain in accordance with an operation condition of the semiconductor switching element.
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公开(公告)号：US12234534B2
公开(公告)日：2025-02-25
申请号：US17259253
申请日：2019-03-08
Applicant: Hitachi, Ltd.
Inventor： Matahiro Komuro , Yuichi Satsu
Abstract: Provided are: a sintered magnet having an improved maximum energy product while maintaining the magnetic coercivity of the magnet; and a production method for such a sintered magnet. The sintered magnet (10a) according to the present invention comprises particles (6) each including: a main phase (2) in which the main component is a compound containing a rare-earth element and iron; and a diffusion layer (1) provided on the surface of the main phase (2). The diffusion layers (1) are characterized by: containing, as a main component, a compound resulting from a solid-solution of carbon and/or nitrogen in said compound of the main phase (2); and having a concentration gradient of carbon and/or nitrogen from the surfaces of the particles (6) toward the interior thereof.
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公开(公告)号：US20250060334A1
公开(公告)日：2025-02-20
申请号：US18721968
申请日：2022-12-08
Applicant: HITACHI, LTD.
Inventor： Chihiro MANRI , Takahide YOKOI , Takahiro ANDO
IPC: G01N27/447 , C12Q1/6853 , C12Q1/6858
Abstract: Provided is a method and a means for improving multiplex simultaneous detection of a structural polymorphism mutation in capillary electrophoresis. In one embodiment, the present invention relates to a method for detecting a mutation in a test nucleic acid, the method including: providing a first primer set, containing at least one labeled first primer, for amplifying a nucleic acid with a first mutation; providing a second primer set, containing at least one labeled second primer, for amplifying a nucleic acid with a second mutation; amplifying the test nucleic acid with use of the first primer set and the second primer set; and subjecting an obtained amplification product to capillary electrophoresis to analyze the mutation in the test nucleic acid, the first primer and the second primer being individually labeled with combinations of different numbers and/or kinds of fluorescent dyes.
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