Patents by Inventor Takashi Nagao

Takashi Nagao 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).

  • Publication number: 20240035122
    Abstract: The present invention provides an aluminum molded body having high thermal conductivity as well as higher strength than a rolled material, and a method for producing the aluminum molded body. More specifically, provided are an aluminum molded body having a thermal conductivity of 180 W/mK or higher and higher strength than a rolled material of the same composition, and a method with which it is possible to efficiently produce the aluminum molded body even when the shape thereof is complex. An aluminum layered molded body obtained by molding through an additive manufacturing method according to the present invention is characterized in that: an aluminum material containing 0.001-2.5 mass % of a transition metal element that forms a eutectic with Al, the balance being Al and unavoidable impurities, is used as a raw material; and the thermal conductivity is 180 W/mK or higher.
    Type: Application
    Filed: April 13, 2021
    Publication date: February 1, 2024
    Inventors: Masato YATSUKURA, Takashi NAGAO, Tsuguharu TASHIRO, Jun KUSUI
  • Patent number: 11880566
    Abstract: Provided is a storage system including a plurality of controllers. The storage system adopts a write-once data storage system and can implement high Input/Output (I/O) processing performance while ensuring data consistency when a failure occurs. Before metadata duplication, recovery data including information necessary for performing roll forward or roll back is stored in each controller, and then the metadata duplication is performed. A recovery data storage processing and the metadata duplication are offloaded to a hardware accelerator.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: January 23, 2024
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Betsuno, Takashi Nagao, Yuusaku Kiyota, Tomohiro Yoshihara
  • Publication number: 20230400982
    Abstract: A storage system includes: a central processing unit; a main memory; first management information that associates a hash value of received data with an address in a volume; and an I/O processing package. The I/O processing package includes an I/O processor and an I/O memory. The I/O processor executes protocol processing. The I/O processor executes at least a part of search processing of an address associated with a hash value of first received data in the first management information. The central processing unit controls execution of deduplication processing of the first received data based on data of an address associated with the hash value of the first received data.
    Type: Application
    Filed: March 1, 2023
    Publication date: December 14, 2023
    Applicant: Hitachi, Ltd.
    Inventors: Hiroka IHARA, Nobuhiro YOKOI, Takashi NAGAO, Yoshihiro YOSHII
  • Patent number: 11837516
    Abstract: In a semiconductor device, on a heat dissipation portion of a lead frame opposite to a mounting portion on which a semiconductor element is mounted, a thin molding portion having a thickness of about 0.02 mm to 0.3 mm is formed by a second molding resin which is a high-heat-dissipation resin. A scale-like portion on which scale-shaped projections are consecutively formed is provided over both sides across a resin boundary portion of the heat dissipation portion. The scale-like portion reaches abutting surfaces of an upper die and a lower die of a mold used in a molding process. Thus, the same void inhibition effect as with an air vent is obtained.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: December 5, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takanobu Kajihara, Katsuhiko Omae, Takashi Nagao, Atsuki Fujita, Ryosuke Takeshita, Masakazu Hamada
  • Patent number: 11816336
    Abstract: The present disclosure is to optimize processes in a storage system. A storage system includes: a first controller including a first computing device and a first memory; a second controller including a second computing device and a second memory; and an interface circuit that transfers data between the first controller and the second controller. The interface circuit reads first compressed data from the second memory. The interface circuit decompresses the first compressed data to generate first uncompressed data, and writes the first uncompressed data into the first memory.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: November 14, 2023
    Assignee: HITACHI, LTD.
    Inventors: Naoya Okada, Takashi Nagao, Kentaro Shimada, Ryosuke Tatsumi, Sadahiro Sugimoto
  • Patent number: 11782603
    Abstract: A bandwidth between a second processor and a second memory is higher than a bandwidth between a first processor and a first memory. The first memory stores a read command from a host computer. The first processor analyzes a content of the read command, and in accordance with a result of the analysis, requests read data from the second processor. In response to the request from the first processor, the second processor reads the read data from one or more storage drives and stores the read data in the second memory. The second processor notifies the first processor that the read data is stored in the second memory. The first processor transfers the read data read from the second memory, to the host computer without storing the read data in the first memory.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: October 10, 2023
    Assignee: Hitachi, Ltd.
    Inventors: Kentaro Shimada, Takashi Nagao, Naoya Okada
  • Publication number: 20230297242
    Abstract: A storage device manages data stored in a storage drive in a plurality of logical hierarchies. The plurality of logical hierarchies include a writing hierarchy above a hierarchy of a parity group including a plurality of storage drives. The storage device writes received host data in a free area in the writing hierarchy. In the data recovery process for replacing a failure storage drive with a new storage drive, the storage device executes the garbage collection process on a first logical area in the writing hierarchy associated with the first parity group including the failure storage drive. In the garbage collection process, valid data is selected from the first logical area and copied to a second logical area associated with a second parity group different from the first parity group.
    Type: Application
    Filed: September 19, 2022
    Publication date: September 21, 2023
    Applicant: Hitachi, Ltd.
    Inventors: Kenichi BETSUNO, Akira YAMAMOTO, Takashi NAGAO, Kazuki MATSUGAMI
  • Publication number: 20230280945
    Abstract: A storage system holds upper mapping information and lower mapping information. The upper mapping information manages an address relationship between a logical device upper layer accessed by a host and a logical device middle layer. The lower mapping information manages an address relationship between the logical device middle layer and a logical device lower layer. The lower mapping information includes pieces of partial mapping information. Each of the pieces of partial mapping information manages address information of a partial area in the logical device middle layer. The storage system writes, in response to a failure of first partial mapping information in the lower mapping information, new data that fills a first partial area in the logical device middle layer managed by the first partial mapping information, and regenerates the first partial mapping information.
    Type: Application
    Filed: September 12, 2022
    Publication date: September 7, 2023
    Inventors: Ryosuke TATSUMI, Takashi NAGAO, Kazuki MATSUGAMI
  • Patent number: 11740799
    Abstract: A storage system having high reliability and IO processing performance is realized. The storage system includes: a first arithmetic unit configured to receive an input and output request and perform data input and output processing; a first memory connected to the first arithmetic unit; a plurality of storage drives configured to store data; a second arithmetic unit; and a second memory connected to the second arithmetic unit. The first arithmetic unit instructs the storage drive to read data, the storage drive reads the data and stores the data in the second memory, the second arithmetic unit stores the data stored in the second memory in the first memory, and the first arithmetic unit transmits the data stored in the first memory to a request source of a read request for the data.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: August 29, 2023
    Assignee: HITACHI, LTD.
    Inventors: Takashi Nagao, Yuusaku Kiyota, Hideaki Monji, Tomohiro Yoshihara
  • Publication number: 20230214134
    Abstract: A storage controller manages a logical volume to which a host makes an access and which manages host data, an addition address space which is mapped with the logical volume and to which host data is added, and a physical address space which is mapped with the addition address space. In the addition address space, different address regions are allocated to respective parity groups. The storage controller selects, as an addition area of host data supplied from the host, an unoccupied address region in the addition address space. As the addition area, a region mapped to a normal status parity group in which data recovery is unnecessary is more preferentially selected than a region allocated to an abnormal status parity group in which data recovery is necessary.
    Type: Application
    Filed: September 7, 2022
    Publication date: July 6, 2023
    Inventors: Takashi NAGAO, Tomohiro YOSHIHARA, Hiroki FUJII
  • Patent number: 11668401
    Abstract: A dual gate valve includes two valve plates that open and close two openings of a valve box, a support bar that supports the two valve plates, a valve rod connected to the support bar, and an operation unit that performs an open and close operation of the two valve plates via the valve rod. The support bar and the valve plate linearly and elongatedly extend in a lateral direction perpendicular to a central axis of the valve rod. The valve rod is connected to a central portion in the long direction of the support bar, and one and the other of the two valve plates are tiltably attached to one end and the other end in the long direction of the support bar via elastic members, respectively.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: June 6, 2023
    Assignee: SMC CORPORATION
    Inventors: Hiromi Shimoda, Hiroshi Ogawa, Takashi Nagao
  • Publication number: 20230158570
    Abstract: The purpose of the present invention is to provide an aluminum alloy molded body that has excellent thermal stability and does not contain a rare earth element, and to provide a production method for the same. More specifically, the present invention provides an aluminum alloy molded body that has a high degree of hardness even at 200° C., and a method which enables efficient production of the same even if the aluminum alloy molded body has a complicated shape. An aluminum alloy laminated molded body according to the present invention, which is molded using an additive manufacturing method, is characterized in that: the raw material therefor is an aluminum alloy material containing 2-10 mass % of a transition metal element that forms a eutectic crystal with Al, with the remainder being Al and unavoidable impurities; the relative density thereof is at least 98.
    Type: Application
    Filed: April 13, 2021
    Publication date: May 25, 2023
    Inventors: Masato YATSUKURA, Takashi NAGAO, Tsuguharu TASHIRO, Jun KUSUI
  • Publication number: 20230136735
    Abstract: The present disclosure is to optimize processes in a storage system. A storage system includes: a first controller including a first computing device and a first memory; a second controller including a second computing device and a second memory; and an interface circuit that transfers data between the first controller and the second controller. The interface circuit reads first compressed data from the second memory. The interface circuit decompresses the first compressed data to generate first uncompressed data, and writes the first uncompressed data into the first memory.
    Type: Application
    Filed: December 19, 2022
    Publication date: May 4, 2023
    Inventors: Naoya OKADA, Takashi NAGAO, Kentaro SHIMADA, Ryosuke TATSUMI, Sadahiro SUGIMOTO
  • Patent number: 11626347
    Abstract: A shared base plate includes a plurality of base portions to which a plurality of electronic components including semiconductor switching elements are to be mounted, and a terminal formed portion formed so as to extend from the base portion to the outer side. The terminal formed portion includes a discrimination terminal which is used as a terminal in one of a first semiconductor module and a second semiconductor module and which is not used as a terminal in the other one. If the discrimination terminal that is not used as a terminal is cut to be short, it becomes possible to easily discriminate the semiconductor module from another semiconductor module having the shared base plate by outer appearances.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: April 11, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Nagao, Kensuke Takeuchi
  • Patent number: 11621216
    Abstract: A semiconductor module includes a semiconductor switching element, a multiple of bases, on at least one of which the semiconductor switching element is mounted, a molded resin that seals the semiconductor switching element and the multiple of bases, a multiple of terminals formed integrally with each one of the multiple of bases and provided extending from an outer periphery side face of the molded resin, and a recessed portion or a protruding portion having a depth or a height such that creepage distance between the multiple of terminals is secured, and formed so as to cross an interval between the multiple of terminals, in one portion of the outer periphery side face of the molded resin between the multiple of terminals.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: April 4, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kensuke Takeuchi, Masayuki Funakoshi, Takashi Nagao
  • Publication number: 20230100326
    Abstract: A vehicle control system includes a terminal including a storage unit to store additional function information generated by software configured to add a new function to functionality of at least one electronic device mounted on a vehicle and a first communication unit to output the additional function information, and a vehicle control device including a second communication unit to communicate with the terminal through the first communication unit and configured to add a new function to the at least one electronic device based on the additional function information obtained from the terminal through the second communication unit.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 30, 2023
    Inventors: Naofumi KATO, Takashi NAGAO, Tetsuya EGAWA, Hitoshi MURAKI, Masanori KOSUGI
  • Publication number: 20230077977
    Abstract: A vehicle control device includes at least one allowed function that a user is allowed to use and at least one disallowed function that the user is not allowed to use in a plurality of functions of at least one mounted electronic device, and a control unit to perform at least one of changing at least one of the disallowed function into the allowed function and changing at least one of the allowed function into the disallowed function, based on obtained function information about the allowed function and the disallowed function.
    Type: Application
    Filed: February 24, 2021
    Publication date: March 16, 2023
    Inventors: Naofumi KATO, Takashi NAGAO, Tetsuya EGAWA, Hitoshi MURAKI, Masanori KOSUGI
  • Publication number: 20230075635
    Abstract: A bandwidth between a second processor and a second memory is higher than a bandwidth between a first processor and a first memory. The first memory stores a read command from a host computer. The first processor analyzes a content of the read command, and in accordance with a result of the analysis, requests read data from the second processor. In response to the request from the first processor, the second processor reads the read data from one or more storage drives and stores the read data in the second memory. The second processor notifies the first processor that the read data is stored in the second memory. The first processor transfers the read data read from the second memory, to the host computer without storing the read data in the first memory.
    Type: Application
    Filed: March 9, 2022
    Publication date: March 9, 2023
    Inventors: Kentaro SHIMADA, Takashi NAGAO, Naoya OKADA
  • Patent number: 11565635
    Abstract: A vehicle control device includes an actuation unit that actuates an anomaly control switch that acknowledges execution of safety control, which improves safety during driving of a vehicle, upon detection of an occupant in an anomalous state from a monitoring result of a state of the occupant of the vehicle. The actuation unit causes the anomaly control switch to be actuated to allow the occupant to recognize a control content of the safety control. The vehicle control device further includes an operation acknowledgement unit that acknowledges operation of the anomaly control switch and a controller that executes the safety control when the operation acknowledgement unit acknowledges the operation of the anomaly control switch.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: January 31, 2023
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Masanori Kosugi, Tetsuya Egawa, Takashi Nagao
  • Patent number: 11555546
    Abstract: In a connection mechanism that connects a valve shaft to air cylinders, shake prevention mechanisms are disposed at facing portions at which outer side surfaces of side frames face inner side surfaces of housings of the air cylinders and/or facing portions at which inner side surfaces and of the side frames face left-hand and right-hand side surfaces of a center frame. The shake prevention mechanisms include a sliding member that is disposed on a sliding surface that is formed on one of two surfaces that face each other and on the other and a spring mechanism that presses the sliding member in a direction in which the sliding member comes into contact with the sliding surface.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: January 17, 2023
    Assignee: SMC CORPORATION
    Inventors: Takashi Nagao, Hidefumi Ikeda