Patents by Inventor Masahiro Arai
Masahiro Arai 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).
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Publication number: 20250021246Abstract: When executing a data transfer process between one volume and a second storage unit, a computer resource activation unit activates one or more computer resources that executes the data transfer process, and mounts one common volume as a transfer source or a transfer destination in the data transfer process on any of the activated computer resources. A region allocation unit allocates a part of the data transfer process to the computer resource for each storage region. The computer resource executes the part of the data transfer process between the second storage unit and the storage region allocated to the computer resource in the one common volume.Type: ApplicationFiled: March 8, 2024Publication date: January 16, 2025Applicant: Hitachi, Ltd.Inventors: Masahiro ARAI, Akira Deguchi, Kazuei Hironaka
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Publication number: 20240354312Abstract: To back up stored data of a storage device installed on-premise to a storage service provided by a public cloud more reliably and efficiently. A storage system according to the invention includes a storage device having first storage logical volumes (LDEVs), and a storage device having second storage LDEVs. When stored data of a first LDEV and stored data of a second LDEV are synchronized with each other, network conditions in a transfer path from the storage device to the public cloud and in a transfer path from the storage device to the public cloud are observed. The first LDEV or the second LDEV is selected as a backup source based on the network conditions.Type: ApplicationFiled: September 8, 2023Publication date: October 24, 2024Applicant: Hitachi, Ltd.Inventors: Kazuei HIRONAKA, Masahiro ARAI, Akira DEGUCHI
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Patent number: 12093142Abstract: In failover processing, a CPU restores data stored in a first volume to a second volume of a storage system, associates a unique ID of the first volume with the second volume, and stores the unique ID associated therewith in a memory. After the failover processing is completed, the CPU manages an update difference management bitmap indicating an updated content with respect to data stored in the second volume. The CPU transmits, in failback processing, update data updated after the failover processing among the data stored in the second volume to the first volume identified by the unique ID associated with the second volume based on the update difference management bitmap.Type: GrantFiled: March 9, 2023Date of Patent: September 17, 2024Assignee: HITACHI, LTD.Inventors: Masahiro Arai, Akira Deguchi, Hideyuki Koseki
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Patent number: 12038386Abstract: An image capturing unit in an inspection system for performing an inspection target appearance inspection, the image capturing unit comprising, an image capture unit, an illumination unit arranged in a periphery of the image capture unit, and a protective unit covering the image capture unit and the illumination unit, wherein the protective unit includes a plate-like member configured by a first planar portion and a second planar portion being connected through a bent portion bent in a dog leg shape, and the image capture unit is located on a back side of the first planar portion.Type: GrantFiled: December 15, 2023Date of Patent: July 16, 2024Assignee: ROBIT INC.Inventors: Masahiro Arai, Kaoru Kawakita, Ryuichi Hirano
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Patent number: 11977764Abstract: 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: GrantFiled: September 15, 2022Date of Patent: May 7, 2024Assignee: HITACHI, LTD.Inventors: Hideyuki Koseki, Akira Deguchi, Masahiro Arai
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Patent number: 11970643Abstract: The present disclosure provides a suction fixing sheet to be placed on a suction surface of a suction device to prevent contact between a suction target and the suction surface, the suction fixing sheet including: a porous sheet having air permeability in its thickness direction; and an adhesive layer having air permeability in its thickness direction and disposed on one surface of the porous sheet; wherein the adhesive layer includes a crosslinked adhesive agent, and sucked force obtained for the suction fixing sheet when the sheet area is 100 cm2, the sucked force being measured by a predetermined method, is 450 N or more. The suction fixing sheet of the present invention can suppress a decrease in processing accuracy of a suction target even when the sheet is used under high temperature conditions.Type: GrantFiled: September 6, 2019Date of Patent: April 30, 2024Assignee: NITTO DENKO CORPORATIONInventor: Masahiro Arai
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Publication number: 20240111638Abstract: In failover processing, a CPU restores data stored in a first volume to a second volume of a storage system, associates a unique ID of the first volume with the second volume, and stores the unique ID associated therewith in a memory. After the failover processing is completed, the CPU manages an update difference management bitmap indicating an updated content with respect to data stored in the second volume. The CPU transmits, in failback processing, update data updated after the failover processing among the data stored in the second volume to the first volume identified by the unique ID associated with the second volume based on the update difference management bitmap.Type: ApplicationFiled: March 9, 2023Publication date: April 4, 2024Inventors: Masahiro ARAI, Akira DEGUCHI, Hideyuki KOSEKI
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Publication number: 20240036989Abstract: A management server stops a sub-server in advance and prepares a sub-storage that operates in response to a request from the sub-server at the time of transition at which a business process of using data stored in a regular storage is performed in the sub-server. The management server recovers data using recovery data stored in an object storage and stores the data in the sub-storage and starts the sub-server.Type: ApplicationFiled: March 1, 2023Publication date: February 1, 2024Inventors: Akira DEGUCHI, Masahiro ARAI, Hideyuki KOSEKI
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Publication number: 20240020206Abstract: In a storage system that is connected via networks to a cloud system, which provides an object store, and backs up backup data of a predetermined volume as an object to the object store, the storage system includes a processor, and the processor is configured to determine whether the storage system stores a snapshot associated with a volume at a first point in time to be restored, and restore the volume at the first point in time using the snapshot when it is determined that the storage system stores the snapshot.Type: ApplicationFiled: March 1, 2023Publication date: January 18, 2024Inventors: Masahiro ARAI, Akira DEGUCHI, Hideyuki KOSEKI
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Publication number: 20230393948Abstract: Acquiring a snapshot of a logical volume involves generating snapshot-related catalog information including at least a location for storing actual data in the snapshot and a reference destination for identifying another snapshot in parent-child relation to the snapshot, and storing the actual data in the snapshot to the physical storage device and/or to the cloud service. In a case where at least one of a plurality of snapshots is to be designated and restored, catalog information is referenced to identify the storage location of the actual data and acquire the actual data stored in the physical storage device and the actual data not stored in the physical storage device from the cloud service.Type: ApplicationFiled: March 6, 2023Publication date: December 7, 2023Applicant: Hitachi, Ltd.Inventors: Hiroki FUJII, Masahiro ARAI, Akira DEGUCHI
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Publication number: 20230297265Abstract: 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: ApplicationFiled: September 15, 2022Publication date: September 21, 2023Applicant: Hitachi, Ltd.Inventors: Hideyuki KOSEKI, Akira DEGUCHI, Masahiro ARAI
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Publication number: 20230158718Abstract: A heat-resistant release sheet is configured to be disposed, when a resin or a target including a resin is used in a step involving heating and melting of the resin, between the resin or the target and a member to be brought into contact with the resin or the target to prevent direct contact between the resin or the target and the member. The sheet includes a skived sheet including polytetrafluoroethylene (PTFE) or a modified PTFE. A content of a tetrafluoroethylene (TFE) unit in the modified PTFE is 99 mass % or more. In each of two directions being in-plane directions of the heat-resistant release sheet and being perpendicular to each other, a rate of dimensional shrinkage induced by heating at 175° C. for 30 minutes is more than 0%. The sheet includes the skived sheet including the heat-resistant resin but prevents occurrence of problems attributable to inclusion of the skived sheet.Type: ApplicationFiled: March 23, 2021Publication date: May 25, 2023Applicant: NITTO DENKO CORPORATIONInventors: Yuuzou MURAKI, Masahiro ARAI, Kurato AKIBA, Toshimitsu TACHIBANA
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Patent number: 11542416Abstract: The suction fixing sheet of the present disclosure is a suction fixing sheet to be placed on a suction surface of a suction device to prevent contact between a suction target and the suction surface. The suction fixing sheet includes a porous sheet having air permeability in its thickness direction; and a double-sided pressure-sensitive adhesive sheet provided with a substrate, having air permeability in its thickness direction, and disposed on one surface of the porous sheet, or a double-sided pressure-sensitive adhesive layer unprovided with a substrate, formed of a crosslinked pressure-sensitive adhesive, having air permeability in its thickness direction, and disposed on one surface of the porous sheet. The ratio of the thickness of the porous sheet to the thickness of the double-sided pressure-sensitive adhesive sheet or the double-sided pressure-sensitive adhesive layer is 8.0 or more.Type: GrantFiled: September 12, 2018Date of Patent: January 3, 2023Assignee: NITTO DENKO CORPORATIONInventors: Masahiro Arai, Hiromitsu Morishita
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Patent number: 11481114Abstract: A storage apparatus includes: a flash memory that provides a storage area; a controller that controls writing and reading of data to and from the storage area; and a buffer memory that temporarily stores data to be written in the storage area, in which the controller selects one compression method from a first reversible compression method and a second reversible compression method based on access performance to the flash memory, and determines to compress data based on the selected one compression method and to write the compressed data to the storage area, and the first reversible compression method has a lower compression ratio and a slower compression speed than the second reversible compression method.Type: GrantFiled: November 8, 2016Date of Patent: October 25, 2022Assignee: HITACHI, LTD.Inventors: Nagamasa Mizushima, Masahiro Tsuruya, Masahiro Arai
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Publication number: 20210362453Abstract: The workpiece protection sheet is used between a suction table and a workpiece in a state where the workpiece protection sheet is sucked to the suction table when the workpiece is pressed on the suction table. The workpiece protection sheet includes a base layer and an ultrahigh molecular weight polyethylene porous layer, an air permeability in a thickness direction of the workpiece protection sheet measured such that the base layer side is at an upstream side of airflow during measuring is 4000 seconds/100 mL or more as represented by a Gurley air permeability measured according to Method B of air permeability measurement specified in JIS L1096, a suction surface to be sucked to the suction table is composed of the base layer, and a contact surface to be in contact with the workpiece is composed of the ultrahigh molecular weight polyethylene porous layer.Type: ApplicationFiled: May 24, 2019Publication date: November 25, 2021Applicant: NITTO DENKO CORPORATIONInventor: Masahiro ARAI
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Publication number: 20210348033Abstract: The present disclosure provides a suction fixing sheet to be placed on a suction surface of a suction device to prevent contact between a suction target and the suction surface, the suction fixing sheet including: a porous sheet having air permeability in its thickness direction; and an adhesive layer having air permeability in its thickness direction and disposed on one surface of the porous sheet; wherein the adhesive layer includes a crosslinked adhesive agent, and sucked force obtained for the suction fixing sheet when the sheet area is 100 cm2, the sucked force being measured by a predetermined method, is 450 N or more. The suction fixing sheet of the present invention can suppress a decrease in processing accuracy of a suction target even when the sheet is used under high temperature conditions.Type: ApplicationFiled: September 6, 2019Publication date: November 11, 2021Applicant: NITTO DENKO CORPORATIONInventor: Masahiro ARAI
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Patent number: 11151141Abstract: It is possible execute processing large-scale data and improve the processing efficiency while suppressing the complexity of a hardware circuit. A data processing device includes a processor and a FPGA connected to the processor. The processor is configured to acquire a query plan including target identification information identifying data to be processed and a processing detail for the data to be processed, generate, based on the query plan, a plurality of FPGA commands to process a plurality of row group data items constituting the data identified by the target identification information and to be processed, and transmit the FPGA commands to the FPGA. The FPGA is configured to execute processing on the row group data items based on the transmitted FPGA commands and return results of executing the processing to the processor.Type: GrantFiled: August 23, 2019Date of Patent: October 19, 2021Assignee: HITACHI, LTD.Inventors: Yoshifumi Fujikawa, Toshiyuki Aritsuka, Satoru Watanabe, Kazushi Nakagawa, Kazuhisa Fujimoto, Masahiro Arai
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Patent number: 10896700Abstract: A system including a first storage drive and a superior device superior to the first storage drive, wherein the superior device specifies a first allowable environmental temperature that makes the remaining lifetime of the first storage drive longer than the remaining operation schedule period of the first storage drive, and controls an environmental temperature adjusting device that adjusts the environmental temperature of the first storage drive on the basis of the first allowable environmental temperature.Type: GrantFiled: April 19, 2017Date of Patent: January 19, 2021Assignee: HITACHI, LTD.Inventors: Masahiro Tsuruya, Masahiro Arai, Akifumi Suzuki, Shimpei Nomura
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Publication number: 20200277518Abstract: The suction fixing sheet of the present disclosure is a suction fixing sheet to be placed on a suction surface of a suction device to prevent contact between a suction target and the suction surface. The suction fixing sheet includes a porous sheet having air permeability in its thickness direction; and a double-sided pressure-sensitive adhesive sheet provided with a substrate, having air permeability in its thickness direction, and disposed on one surface of the porous sheet, or a double-sided pressure-sensitive adhesive layer unprovided with a substrate, formed of a crosslinked pressure-sensitive adhesive, having air permeability in its thickness direction, and disposed on one surface of the porous sheet. The ratio of the thickness of the porous sheet to the thickness of the double-sided pressure-sensitive adhesive sheet or the double-sided pressure-sensitive adhesive layer is 8.0 or more.Type: ApplicationFiled: September 12, 2018Publication date: September 3, 2020Applicant: NITTO DENKO CORPORATIONInventors: Masahiro ARAI, Hiromitsu MORISHITA
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Publication number: 20200265052Abstract: It is possible execute processing large-scale data and improve the processing efficiency while suppressing the complexity of a hardware circuit. A data processing device includes a processor and a FPGA connected to the processor. The processor is configured to acquire a query plan including target identification information identifying data to be processed and a processing detail for the data to be processed, generate, based on the query plan, a plurality of FPGA commands to process a plurality of row group data items constituting the data identified by the target identification information and to be processed, and transmit the FPGA commands to the FPGA. The FPGA is configured to execute processing on the row group data items based on the transmitted FPGA commands and return results of executing the processing to the processor.Type: ApplicationFiled: August 23, 2019Publication date: August 20, 2020Applicant: HITACHI, LTD.Inventors: Yoshifumi Fujikawa, Toshiyuki Aritsuka, Satoru Watanabe, Kazushi Nakagawa, Kazuhisa Fujimoto, Masahiro Arai