Patents Assigned to Tokyo Metropolitan University
  • Patent number: 11543366
    Abstract: An information acquisition method includes: executing a voxel defining process to divide an area in which a signal source is assumed to be present and define a voxel division V1 specifying resolution of an image; executing a data collecting process to acquire magnetic field data resulting from measurement of a magnetic field generated in the area; and executing a reconstructing process to estimate, by using a mathematical algorithm, a direction and strength of a current of a signal source at a location of each voxel based on the acquired magnetic field data. The reconstructing process includes: calculating a Gram matrix by using a voxel division V2 defined coarser than the voxel division V1; and reconstructing, by using the Gram matrix, a direction and strength of a current of a signal source in the voxel division V1.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: January 3, 2023
    Assignees: Ricoh Company, Ltd., Tokyo Metropolitan University
    Inventors: Taishi Watanabe, Kensuke Sekihara
  • Patent number: 11107936
    Abstract: An output voltage control circuit device includes a rectifying unit configured to permit a flow of a current from a negative electrode side to a positive electrode side of a power supply cell, a voltage generation unit, through which a current is able to flow in both directions between both ends inserted between a negative electrode of an odd-numbered power supply cell counted from the negative electrode side of the power supply cells and an anode of the rectifying unit, and a generated voltage between both ends is able to be cyclically inverted; a voltage holding capacitor, and a voltage control circuit unit configured to generate a voltage, a direction of which is cyclically inverted, between both ends of the voltage generation unit on the negative electrode side of the power supply cells.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 31, 2021
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Kazuki Obata, Toshihisa Shimizu
  • Publication number: 20200321482
    Abstract: An output voltage control circuit device includes a rectifying unit configured to permit a flow of a current from a negative electrode side to a positive electrode side of a power supply cell, a voltage generation unit, through which a current is able to flow in both directions between both ends inserted between a negative electrode of an odd-numbered power supply cell counted from the negative electrode side of the power supply cells and an anode of the rectifying unit, and a generated voltage between both ends is able to be cyclically inverted; a voltage holding capacitor, and a voltage control circuit unit configured to generate a voltage, a direction of which is cyclically inverted, between both ends of the voltage generation unit on the negative electrode side of the power supply cells.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 8, 2020
    Applicants: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Kazuki Obata, Toshihisa Shimizu
  • Patent number: 10720745
    Abstract: The present invention provides an atomic oscillator comprising: a first frequency synthesizer for multiplying a reference frequency signal oscillated with a first voltage control oscillator by a first multiplication ratio and synthesizing a first high frequency signal; a first semiconductor laser for emitting a first laser light modulated by the first high frequency signal; a second frequency synthesizer for multiplying an output signal oscillated by a second voltage control oscillator with a second multiplication ratio and synthesizing a second high frequency signal; a second semiconductor laser for emitting a second laser modulated by the second high frequency signal; a gas cell being emitted with the first laser light and the second laser light simultaneously, the gas cell enclosing a first alkali-metal atom gas, a second alkali-metal atom gas, and buffer gas; and a computer for setting the first multiplication ratio in the first frequency synthesizer.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: July 21, 2020
    Assignee: Tokyo Metropolitan University
    Inventor: Shigeyoshi Goka
  • Patent number: 10643032
    Abstract: An output sentence generation apparatus for automatically generating one output sentence from a plurality of input keywords includes a candidate sentence generator incorporating a learned neural network configured to take in the plurality of keywords and generate a plurality of candidate sentences each including at least some of the plurality of keywords, and an evaluation outputter configured to calculate an overlap ratio for each of the plurality of candidate sentences generated by the candidate sentence generator and increase an evaluation of the candidate sentence with a small overlap ratio to thereby determine an output sentence from the plurality of candidate sentences. The overlap ratio is the number of occurrences of an overlapping word with respect to the number of occurrences of all words included in the corresponding candidate sentence.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: May 5, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan University
    Inventors: Mamoru Komachi, Shin Kanouchi, Tomoya Ogata, Tomoya Takatani
  • Publication number: 20200070429
    Abstract: Provided are: a bond construction of an FRP material to a structure characterized in that a bonding layer formed from a fibrous substrate and a resin is interposed between the structure and the FRP material, and the bonding layer is protruded from an edge of the FRP material; and a bonding method. Repair or reinforcement of an existing structure can be made easily and reliably at a construction site with a required FRP material, and in particular, a sufficiently strong bonding force can be exerted between the structure and the FRP material for repair or reinforcement and a targeted repair or reinforcement performance due to the FRP material can be exhibited for the structure more reliably.
    Type: Application
    Filed: April 23, 2018
    Publication date: March 5, 2020
    Applicants: Toray Industries, Inc., Tokyo Metropolitan University, National University Corporation Toyohashi University of Technology
    Inventors: Takahiro Matsui, Yutaka Ochi, Hitoshi Nakamura, Yukihiro Matsumoto
  • Patent number: 10550747
    Abstract: A combustion system for ships operated at low cost is provided. A combustion system 1 for ships includes an internal combustion engine 20 that burns fuel, an exhaust line L2 through which exhaust gas flows, the exhaust gas being generated through combustion of the fuel in the internal combustion engine 20, an exhaust heat recovery device 40 that is disposed in the exhaust line L2 and that recovers exhaust heat from the exhaust gas discharged from the internal combustion engine 20, and a denitration device 50 that is disposed in the exhaust line L2 and that removes nitrogen oxide from the exhaust gas using a denitration catalyst. The denitration device 50 is disposed downstream from the exhaust heat recovery device 40 in the exhaust line L2. The denitration catalyst contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: February 4, 2020
    Assignees: The Chugoku Electric Power Co., Inc., Tokyo Metropolitan University
    Inventors: Eiji Kiyonaga, Kenji Hikino, Keiichiro Morita, Akihiro Nakamura, Masatake Haruta, Toru Murayama, Makoto Mino
  • Patent number: 10510347
    Abstract: A language storage method according to one aspect of the present invention includes vectorization steps for vectorizing language accumulated in a dialog log database using a word vector created in advance for each word; determination step for determining whether to employ the language that has been vectorized as response data; and a storage step for accumulating the language that has been determined to be employed as the response data in a response database, in which a dimension reduction step for reducing the number of dimensions of the vector of the language vectorized in the vectorization step is included between the vectorization step and the determination step, and in the determination step, it is determined which one of an employed group and an unemployed group the vector of the language whose number of dimensions has been reduced in the dimension reduction step belongs to.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: December 17, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan University
    Inventors: Toru Yamaguchi, Eri Shimokawara, Kazuki Hirata, Tomoya Takatani
  • Patent number: 10483763
    Abstract: In a photovoltaic device or an operating point control circuit in which a current is output from a corresponding power supply cell or capacitor to between output terminals by periodically cutting off switching elements which are connected in series to a plurality of power supply cells and/or capacitors connected in series between the output terminals via inductors, cutoff duty ratios of all the switching elements are uniformly fixed to the same value in one cycle in which all the switching elements are cut off once.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 19, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Toshihisa Shimizu
  • Patent number: 10385750
    Abstract: There is provided a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A denitration catalyst molded in a block shape contains 43 wt % or more of vanadium pentoxide. The denitration catalyst has a BET specific surface area of 30 m2/g or more and is used for denitration at 200° C. or lower.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 20, 2019
    Assignees: The Chugoku Electric Power Co., Inc., Tokyo Metropolitan University
    Inventors: Eiji Kiyonaga, Kenji Hikino, Keiichiro Morita, Masatake Haruta, Toru Murayama, Makoto Mino
  • Publication number: 20180253420
    Abstract: An output sentence generation apparatus for automatically generating one output sentence from a plurality of input keywords includes a candidate sentence generator incorporating a learned neural network configured to take in the plurality of keywords and generate a plurality of candidate sentences each including at least some of the plurality of keywords, and an evaluation outputter configured to calculate an overlap ratio for each of the plurality of candidate sentences generated by the candidate sentence generator and increase an evaluation of the candidate sentence with a small overlap ratio to thereby determine an output sentence from the plurality of candidate sentences. The overlap ratio is the number of occurrences of an overlapping word with respect to the number of occurrences of all words included in the corresponding candidate sentence.
    Type: Application
    Filed: February 2, 2018
    Publication date: September 6, 2018
    Applicants: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Mamoru KOMACHI, Shin KANOUCHI, Tomoya OGATA, Tomoya TAKATANI
  • Publication number: 20180198120
    Abstract: A lithium secondary battery having a positive electrode, a negative electrode, a separator and an electrolyte solution, in which the positive electrode contains a first active material and a second active material each capable of intercalating and deintercalating lithium. The first active material is in the state under which only deintercalation of lithium can be carried out in a battery reaction with the negative electrode immediately after assembly of the lithium secondary battery, and the second active material is in the state under which lithium can be intercalated in the battery reaction with the negative electrode immediately after assembly of the lithium secondary battery. The negative electrode contains metal lithium as an active material. The separator has a structure in which pores are three-dimensionally regularly arranged.
    Type: Application
    Filed: April 28, 2016
    Publication date: July 12, 2018
    Applicants: Tokyo Metropolitan University, 3DOM Inc.
    Inventors: Masaaki KUBOTA, Hidetoshi ABE, Miyu NEMOTO, Kiyoshi KANAMURA, Kazuhiro IMAZAWA
  • Publication number: 20180166077
    Abstract: A language storage method according to one aspect of the present invention includes vectorization steps for vectorizing language accumulated in a dialog log database using a word vector created in advance for each word; determination step for determining whether to employ the language that has been vectorized as response data; and a storage step for accumulating the language that has been determined to be employed as the response data in a response database, in which a dimension reduction step for reducing the number of dimensions of the vector of the language vectorized in the vectorization step is included between the vectorization step and the determination step, and in the determination step, it is determined which one of an employed group and an unemployed group the vector of the language whose number of dimensions has been reduced in the dimension reduction step belongs to.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 14, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan University
    Inventors: Toru Yamaguchi, Eri Shimokawara, Kazuki Hirata, Tomoya Takatani
  • Patent number: 9935466
    Abstract: Three or more photovoltaic cell units connected in series include a unit holding a voltage between output terminals, a first voltage holding unit group having a voltage holding unit holding a voltage between an anode-side terminal and a cathode-side terminal for each photovoltaic cell unit set with respect to each set of the (2k+1)th and (2k+2)th photovoltaic cell units connected in series to each other counted from the anode side, and a second voltage holding unit group having a voltage holding unit holding a voltage between an anode-side terminal and a cathode-side terminal for each photovoltaic cell unit set with respect to each set of the (2k+2)th and (2k+3)th photovoltaic cell units connected in series to each other counted from the anode side.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: April 3, 2018
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Toshihisa Shimizu
  • Patent number: 9917592
    Abstract: An atomic oscillator includes an alkali metal cell encapsulating an alkali metal atom; a light source that emits laser light; a light detector that detects light which has passed through the alkali metal cell; and a polarizer arranged between the alkali metal cell and the light detector. A modulation frequency in the light source is controlled, according to a coherent population trapping resonance which is a light absorption characteristic of a quantum interference effect for two kinds of resonant lights, by modulating the light source to generate sidebands and injecting laser lights with the sidebands into the alkali metal cell. A magnetic field is applied on the alkali metal cell in a direction parallel to a propagating direction of the laser light, and the laser light entering the alkali metal cell has a linear polarization, which is not parallel to a polarization direction of the polarizer.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: March 13, 2018
    Assignees: RICOH COMPANY, LTD., Tokyo Metropolitan University, Municipal University Corp.
    Inventors: Yuichiro Yano, Shigeyoshi Goka
  • Patent number: 9626156
    Abstract: Provided is an application architecture design method in which an information processing device is used, the method including the steps of: inputting information about dependency relations and design aspects, which are design items regarding modules for running functions, virtual machines for running the modules, and physical machines for running the virtual machines; and executing processing of adapting architecture properly by switching the input information about the dependency relations and the design aspects in matrices in a DSM format, and thereby rearranging allocation of the modules, allocation of the virtual machines, and allocation of the physical machines in stages in the DSM format. As a result, an excellent design solution for architecture suitable for a virtualized environment, a cloud environment deriving, or a similar environment can be derived.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: April 18, 2017
    Assignees: NEC Corporation, Tokyo Metropolitan University, The University of Tokyo
    Inventors: Shigeru Hosono, Koji Kimita, Fumiya Akasaka, Tatsunori Hara, Yoshiki Shimomura, Tamio Arai
  • Patent number: 9602049
    Abstract: In a circuit device controlling an operating point of each of two or more series-connected photovoltaic cells or other power supply cells in a module, the output voltage of the module can be boosted without reducing the generated electric power. The operating point control circuit device includes capacitors connected in parallel to the respective series-connected cells, switching elements connected in parallel to the respective series-connected cells through an inductor, an additional capacitor connected in series to the capacitor row, and an additional switching element connected in series to the switching element row. The switching elements are controlled to shut off electrical conduction between the corresponding terminals connected thereto in the same predetermined cycle and in mutually different periods so as to always establish a condition that one switching element is in the non-conductive state and the others are is in the conductive state.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: March 21, 2017
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Toshihisa Shimizu
  • Publication number: 20160322931
    Abstract: In a circuit device controlling an operating point of each of two or more series-connected photovoltaic cells or other power supply cells in a module, the output voltage of the module can be boosted without reducing the generated electric power. The operating point control circuit device includes capacitors connected in parallel to the respective series-connected cells, switching elements connected in parallel to the respective series-connected cells through an inductor, an additional capacitor connected in series to the capacitor row, and an additional switching element connected in series to the switching element row. The switching elements are controlled to shut off electrical conduction between the corresponding terminals connected thereto in the same predetermined cycle and in mutually different periods so as to always establish a condition that one switching element is in the non-conductive state and the others are is in the conductive state.
    Type: Application
    Filed: April 27, 2016
    Publication date: November 3, 2016
    Applicants: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Toshihisa Shimizu
  • Publication number: 20160316225
    Abstract: There is provided an image processing apparatus which includes a division unit dividing an image into a plurality of images in a bit depth direction, and an encoding unit encoding respectively some or all of the plurality of images acquired by dividing the image in the bit depth direction by the division unit.
    Type: Application
    Filed: July 1, 2016
    Publication date: October 27, 2016
    Applicants: Sony Corporation, Tokyo Metropolitan University
    Inventors: Takahiro FUKUHARA, Hitoshi KIYA
  • Publication number: 20160269037
    Abstract: A method for generating a CPT resonance, includes applying an electric current to a laser light-emitting element, to emit laser light having at least two wavelengths. The value of a direct current component of the electric current applied to the laser light-emitting element in a first period is greater than an oscillation threshold for the laser light-emitting element, and the value of the direct current component of the electric current applied to the laser light-emitting element in a second period, following the first period, is less than the value of the direct current component of the electric current in the first period. An alkali metal atom is irradiated with the laser light, the laser light generated in the first period and the laser light generated in the second period entering the alkali metal atom repeatedly a plurality of times to generate a Ramsey resonance.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Applicants: RICOH COMPANY, LTD., Tokyo Metropolitan University
    Inventors: Shigeyoshi GOKA, Yuichiro YANO, Takumi IDE