Patents by Inventor Takahiro Yamamoto

Takahiro Yamamoto 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).

  • Patent number: 11301137
    Abstract: An object is to construct a storage system with a configuration with a high degree of freedom while ensuring a certain fault tolerance. The storage system includes a plurality of nodes that process an I/O processing request of data. The node has a storage device and a processor that performs the I/O processing on the storage device. The processor constitutes a data redundancy configuration in which data stored in different storage devices is combined as a data set. A management unit for managing the storage system performs a fault tolerance calculation of calculating fault tolerance information for a failure of each component by using component information that is information of a component including at least the and the storage device, and by using data redundancy configuration information related to the data redundancy configuration, and determines a data arrangement by applying the data redundancy configuration related to the calculated fault tolerance information.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: April 12, 2022
    Assignee: HITACHI, LTD.
    Inventors: Takeru Chiba, Masakuni Agetsuma, Takahiro Yamamoto, Hiroto Ebara
  • Publication number: 20220100616
    Abstract: Each redundancy group is constituted by one active program (storage control software of the active program) and N standby programs (N is an integer of two or more). Each of the N standby programs is associated with a priority to be determined as a failover (FO) destination. In the same redundancy group, FO is performed from the active program to the standby program based on the priority. For the plurality of pieces of storage control software including the active programs and the standby programs that change to be active by FO in the plurality of redundancy groups arranged in the same node, standby storage control software that can set each of the programs as a FO destination are arranged in different nodes.
    Type: Application
    Filed: March 11, 2021
    Publication date: March 31, 2022
    Applicant: Hitachi, Ltd.
    Inventors: Shintaro Ito, Takahiro Yamamoto, Sachie Tajima, Masakuni Agetsuma
  • Publication number: 20220100617
    Abstract: Each redundancy group is constituted by one active program (storage control software of the active program) and N standby programs (N is an integer of two or more). Each of the N standby programs is associated with a priority to be determined as a failover (FO) destination. In the same redundancy group, FO is performed from the active program to the standby program based on the priority. For the plurality of pieces of storage control software including the active programs and the standby programs that change to be active by FO in the plurality of redundancy groups arranged in the same node, standby storage control software that can set each of the programs as a FO destination are arranged in different nodes.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 31, 2022
    Applicant: Hitachi, Ltd.
    Inventors: Shintaro Ito, Takahiro Yamamoto, Sachie Tajima, Masakuni Agetsuma
  • Patent number: 11274848
    Abstract: According to one embodiment, a terminal device used by a user in an indoor space in which an air conditioner is installed includes a processor. The processor is configured to input position information indicating a position of the user in the indoor space, input first bodily sensation information indicating an air conditioning state felt by the user, and output the input position information and the input first bodily sensation information to an external device.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: March 15, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichi Fujiwara, Tomoshi Otsuki, Miho Sako, Takahiro Yamamoto, Eiichi Sunagawa, Shusaku Tsuge
  • Publication number: 20220050757
    Abstract: Two or more nodes respectively provided with two or more storage control programs constituting each redundantization group maintain redundantization of metadata at the two or more nodes. When a node failure occurs, a failover from the corresponding active storage control program to a standby storage control program is performed. As regarding at least one standby storage control program, a node with the standby storage control program arranged therein compresses a target metadata portion including a metadata portion capable of being accessed after the failover, of metadata existing in the node as regarding the corresponding redundantization group, and stores the same in a memory of the node.
    Type: Application
    Filed: March 12, 2021
    Publication date: February 17, 2022
    Inventors: Sachie TAJIMA, Masakuni AGETSUMA, Shintaro ITO, Takahiro YAMAMOTO
  • Publication number: 20220044141
    Abstract: A quantum computer executes quantum measurement of <?1|Pi|?2>, <?1|Uij,+|?2>, <?1|Uij,?|?2>, <?1|Pj|?2>, and <?1|PiPj|?2< below based on a quantum state pair configured by a first quantum state ?1 and a second quantum state ?2, and outputs measurement results of the quantum measurement. A classical computer computes a transition amplitude |<?1|A|?2>|2 based on measurement results for <?1|Pi|?2>, <?1|Uij,+|?2>, <?1|Uij,?|?2>, <?1|Pj|?2>, and <?1|PiPj|?2>, wherein A is a physical quantity for computation of transition amplitude, i and j are indices for identifying a and P, a is a real number, P is a tensor product of a Pauli matrix, U is a unitary gate, and <?1|?2>=0.
    Type: Application
    Filed: August 3, 2021
    Publication date: February 10, 2022
    Applicant: QUNASYS INC.
    Inventors: Yohei IBE, Yuya NAKAGAWA, Takahiro YAMAMOTO, Kosuke MITARAI
  • Publication number: 20220027239
    Abstract: Provided is a storage system that performs inter-node movement of parity and reconfiguration of a stripe when a node configuration is changed. The storage system includes a plurality of nodes and a management unit, in which the nodes are targets for data write and read requests, form a stripe by a plurality of data stored in different nodes and parity generated based on the plurality of data, and store the parity of the stripe to which the data under the write request belongs in a node different from the plurality of nodes that store the plurality of data so as to perform redundancy; and the management unit transmits, to the node, an arrangement change request to perform the inter-node movement of the parity and the reconfiguration of the stripe when the node configuration is changed.
    Type: Application
    Filed: October 8, 2021
    Publication date: January 27, 2022
    Inventors: Takahiro YAMAMOTO, Hiroto EBARA, Takeru CHIBA, Masakuni AGETSUMA
  • Publication number: 20220010686
    Abstract: There is provided a turbine power generation system with a single casing configuration capable of easily executing the inhibition of an over-rotation speed. A turbine power generation system in an embodiment includes: a turbine including a turbine casing and a turbine rotor that rotates by a working medium to be introduced into the turbine casing; and a power generator including a power generator rotor connected to the turbine rotor, the power generator being caused to generate power by rotation of the power generator rotor caused by the rotation of the turbine rotor. The turbine casing of the turbine is single, and a moment of inertia of the power generator rotor is larger than a moment of inertia of the turbine rotor.
    Type: Application
    Filed: June 4, 2021
    Publication date: January 13, 2022
    Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Tsuguhisa TASHIMA, Takahiro YAMAMOTO, Koki NISHIMURA, Takahiro ONO, Shogo IWAI
  • Patent number: 11221367
    Abstract: According to one embodiment, an evaluation device includes first processing circuitry and second processing circuitry. The first processing circuitry calculates a feature value of an energy storage device based on voltage values measured from the energy storage device being subjected to charge-discharge-control according to charge-discharge command values. The second processing circuitry derives an evaluation function of a degradation state of the energy storage device according to a difference between a distribution of the charge-discharge command values and a reference distribution. The second processing circuitry evaluates the degradation state of the energy storage device, based on the evaluation function and the calculated feature value.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: January 11, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiro Yamamoto, Hisaaki Hatano, Masatake Sakuma, Kenichi Fujiwara, Takenori Kobayashi, Tomohiro Toyosaki, Yoshiyuki Sakamoto
  • Publication number: 20210405120
    Abstract: According to one embodiment, the information processing device includes: a first state estimator configured to estimate a state of a target rechargeable battery based on: first data includes a charge amount and voltage value of a rechargeable battery; information including a state of the rechargeable battery; and second data including a charge amount and voltage value of the rechargeable battery.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 30, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hisaaki HATANO, Takahiro YAMAMOTO, Kohei MARUCHI, Kenichi FUJIWARA, Masatake SAKUMA
  • Publication number: 20210405890
    Abstract: The storage part receives an I/O request including the ID of software, information regarding a storage area to and from which the software performs input and output, and a token. The storage part checks the I/O request against the software ID, the information regarding the storage area, and the token received from an I/O control part so as to determine whether access to the storage part is allowed. Upon determination that the access to the storage part is allowed, the storage part processes the I/O request.
    Type: Application
    Filed: March 4, 2021
    Publication date: December 30, 2021
    Inventors: Tatsuya HIRAI, Takahiro YAMAMOTO, Hiroto EBARA, Masakuni AGETSUMA, Yoshinori OHIRA
  • Patent number: 11204709
    Abstract: Disclosed is a storage system having a plurality of storage nodes, each of the storage nodes including: a non-volatile storage apparatus that stores control information regarding a volume; a capacity controller that performs control associated with writing information to and reading information from the storage apparatus; and a migration controller migrates the volume, in which when the volume is migrated between the storage nodes, the capacity controller updates the control information in response to the migration of the volume performed by the migration controller.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: December 21, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Shintaro Ito, Takahiro Yamamoto, Hideo Saito
  • Publication number: 20210381391
    Abstract: The invention provides a CO2 turbine power generation system that can be easily prevented from reaching an overspeed condition. A CO2 turbine power generation system of an embodiment includes a CO2 medium shutoff valve installed in a medium flow path between a regenerative heat exchanger and a combustor. When load rejection is to be performed, the CO2 medium shutoff valve closes to shut off the supply of the medium from the regenerative heat exchanger to the combustor.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 9, 2021
    Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Takahiro ONO, Takahiro YAMAMOTO, Koki NISHIMURA, Tomomi OKUYAMA, Tsuguhisa TASHIMA, Shogo IWAI
  • Patent number: 11174943
    Abstract: A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 16, 2021
    Assignee: VALQUA, LTD.
    Inventors: Takahiro Yamamoto, Chao Jing, Mitsuru Minami, Akira Ueda, Yuki Noriduki
  • Patent number: 11169879
    Abstract: Provided is a storage system that performs inter-node movement of parity and reconfiguration of a stripe when a node configuration is changed. The storage system includes a plurality of nodes and a management unit, in which the nodes are targets for data write and read requests, form a stripe by a plurality of data stored in different nodes and parity generated based on the plurality of data, and store the parity of the stripe to which the data under the write request belongs in a node different from the plurality of nodes that store the plurality of data so as to perform redundancy; and the management unit transmits, to the node, an arrangement change request to perform the inter-node movement of the parity and the reconfiguration of the stripe when the node configuration is changed.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: November 9, 2021
    Assignee: HITACHI, LTD.
    Inventors: Takahiro Yamamoto, Hiroto Ebara, Takeru Chiba, Masakuni Agetsuma
  • Publication number: 20210326219
    Abstract: In recovery processing, a distributed storage system 100 locks a storage area in which user data for recovery that is user data serving as data for recovery is stored in drives 405, and releases the lock after caching the user data for recovery in a memory 401 of any of computer nodes 101. Then, the distributed storage system 100 recovers recovery target data on basis of the user data for recovery cached in the memory 401. In write processing, the distributed storage system 100 updates the user data for recovery cached in the memory 401 in accordance with a write request and then writes the user data in accordance with the write request.
    Type: Application
    Filed: September 14, 2020
    Publication date: October 21, 2021
    Inventors: Takeshi ODA, Takahiro YAMAMOTO
  • Patent number: 11150846
    Abstract: A data set is constructed from a first given number of data elements configured from a plurality of data and redundant data corresponding to the plurality of data. The first given number of data elements are deployed in a distributed relationship into a first given number of first nodes. When an instruction to increase the number of data elements of the data set from the first given number by a second given number, the data set is reconstructed using, as new data elements, the first given number of data elements and a second given number of zero data. A controller deploys the data elements of the reconstructed data set in a distributed relationship into the first nodes and the second given number of second nodes while zero data or redundant data are deployed into the second nodes from among the data elements of the reconstructed data set.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: October 19, 2021
    Assignee: HITACHI, LTD.
    Inventors: Takahiro Yamamoto, Hiroaki Akutsu
  • Patent number: 11147647
    Abstract: To reduce more load related to the correction of deformation of an observation image that is caused by an error between a plurality of imaging sections. A medical stereoscopic observation device includes: an acquisition section configured to acquire, from an imaging unit including a first imaging section configured to capture a left-eye image and a second imaging section configured to capture a right-eye image, correction data for correcting an error related to capturing of an image between the first imaging section and the second imaging section, the imaging unit being rotatably held by a support section; and a correction section configured to correct a difference of parallax between the left-eye image and the right-eye image on a basis of the correction data, using a position corresponding to a rotation axis of the imaging unit as a reference position.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: October 19, 2021
    Assignee: SONY OLYMPUS MRDICAL SOLUTIONS INC.
    Inventors: Masataka Kado, Tomonori Ishikawa, Gakuji Higuchi, Hiroshi Ushiroda, Takahiro Yamamoto, Masashige Kimura
  • Patent number: 11151045
    Abstract: Provided is a distributed storage system which can reduce a load on a network between storage apparatuses when an access request is received and improve responsiveness. In the distributed storage system, the storage device includes a data area and a cache area; a node becomes an owner node when receiving a transfer of charge of an LU from another node in a non-storage state where LU data is not stored in a data area; the processor of the owner node receives a read request for an LU that is in charge, obtains data of a target area based on data of the storage device of another node when the data of the target area is not stored in the data area or the cache area of the owner node, and transmits the data to a request source and stores it in a cache area.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 19, 2021
    Assignee: HITACHI, LTD.
    Inventors: Yoshinori Ohira, Masakuni Agetsuma, Takeru Chiba, Takahiro Yamamoto, Hiroto Ebara, Hideo Saito
  • Patent number: D947933
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: April 5, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takahiro Yamamoto