Patents by Inventor Nobuyuki Yoshikawa

Nobuyuki Yoshikawa 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: 20240152727
    Abstract: A neural network controller according to the present disclosed technology is a multilayer neural network controller having a weight matrix. The weight matrix of the neural network controller is updated on the basis of a loss function that is divided into cases by the gain of the closed loop and that is switched in a mode of presence or absence of a penalty term.
    Type: Application
    Filed: January 10, 2024
    Publication date: May 9, 2024
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryoichi TAKASE, Nobuyuki YOSHIKAWA
  • Publication number: 20230367336
    Abstract: The present disclosure provides a system and a method for controlling a motion of a device from an initial state to a target state in an environment having obstacles that form constraints on the motion of the device. The method includes executing a learned function trained with machine learning to generate a feasible or infeasible trajectory connecting the initial state of the device with the target state of the device while penalizing an extent of violation of at least some of the constraints to produce an initial trajectory. The method further includes solving a convex optimization problem subject to the constraints to produce an optimal trajectory that minimizes deviation from the initial trajectory and controlling the motion of the device according to the optimal trajectory.
    Type: Application
    Filed: October 25, 2022
    Publication date: November 16, 2023
    Inventors: Abraham Puthuvana Vinod, Sleiman Safaoui, Ankush Chakrabarty, Rien Quirynen, Nobuyuki Yoshikawa, Stefano Di Cairano
  • Publication number: 20230074148
    Abstract: A controller for controlling a motion of at least one device subject to constraints on the motion, is disclosed. The controller comprises a processor and a memory, where the controller inputs parameters of the task including the state of the at least one device to a neural network trained to output an estimated motion trajectory for performing the task. Further, the controller extracts at least some of the integer values of a solution to a mixed-integer optimization problem for planning an execution of the task that results in the estimated motion trajectory. Further, the controller solves the mixed-integer optimization problem for the parameters of the task with corresponding integer values fixed to the extracted integer values to produce an optimized motion trajectory subject to the constraint and changes the state of the at least one device to track the optimized motion trajectory.
    Type: Application
    Filed: August 20, 2021
    Publication date: March 9, 2023
    Applicants: Mitsubishi Electric Research Laboratories, Inc., Mitsubishi Electric Corporation
    Inventors: Stefano Di Cairano, Ankush Chakrabarty, Rien Quirynen, Mohit Srinivasan, Nobuyuki Yoshikawa, Toshisada Mariyama
  • Patent number: 10605655
    Abstract: Provided are a photon detection device and a photon detection method being practical, capable of performing photon detection in which no afterpulse is generated and generation of a dark count is suppressed, and capable of obtaining a high counting rate with low jitter. The photon detection device of the present invention includes: a photon detection section having a long plate-shaped superconducting stripline whose plate surface is a photon detection surface, and a bias current supply section supplying a bias current to the superconducting stripline; and a single flux quantum comparator circuit capable of detecting magnetic flux scattered from the superconducting stripline upon photon detection.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: March 31, 2020
    Assignee: National Insititute of Advanced Industrial Science & Technology
    Inventors: Nobuyuki Zen, Yasunori Mawatari, Go Fujii, Nobuyuki Yoshikawa
  • Publication number: 20180188107
    Abstract: Provided are a photon detection device and a photon detection method being practical, capable of performing photon detection in which no afterpulse is generated and generation of a dark count is suppressed, and capable of obtaining a high counting rate with low jitter. The photon detection device of the present invention includes: a photon detection section having a long plate-shaped superconducting stripline whose plate surface is a photon detection surface, and a bias current supply section supplying a bias current to the superconducting stripline; and a single flux quantum comparator circuit capable of detecting magnetic flux scattered from the superconducting stripline upon photon detection.
    Type: Application
    Filed: June 15, 2016
    Publication date: July 5, 2018
    Inventors: Nobuyuki Zen, Yasunori Mawatari, Go Fujii, Nobuyuki Yoshikawa
  • Publication number: 20150181887
    Abstract: The invention provides a recombinant apple latent spherical virus (ALSV). The recombinant ALSV contains a partial fragment of a genomic RNA or cDNA from one or more plant pathogenic viruses, and manifests an interference effect against these plant pathogenic viruses. The invention thus provides a novel means of defending against infection of a plant pathogenic virus, without the risk of becoming virulence in the course of proliferation.
    Type: Application
    Filed: May 13, 2011
    Publication date: July 2, 2015
    Inventor: Nobuyuki Yoshikawa
  • Patent number: 9024112
    Abstract: A novel means for accelerating the flowering time in Rosaceae fruit trees such as apples and pears is provided, by inoculating a viral RNA into a cotyledon of a Rosaceae fruit tree seedling immediately after rooting with a particle gun technique, wherein the viral RNA is concentrated from a proliferating host infected with a recombinant apple latent spherical virus (FT-ALSV) expressing an Arabidopsis FT gene.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: May 5, 2015
    Assignee: Incorporated National University Iwate University
    Inventors: Nobuyuki Yoshikawa, Noriko Yamagishi, Shintaro Sasaki, Sadao Komori, Masato Wada, Norimitsu Tanaka
  • Publication number: 20120090053
    Abstract: A novel means for accelerating the flowering time in Rosaceae fruit trees such as apples and pears is provided, by inoculating a viral RNA into a cotyledon of a Rosaceae fruit tree seedling immediately after rooting with a particle gun technique, wherein the viral RNA is concentrated from a proliferating host infected with a recombinant apple latent spherical virus (FT-ALSV) expressing an Arabidopsis FT gene.
    Type: Application
    Filed: February 12, 2010
    Publication date: April 12, 2012
    Inventors: Nobuyuki Yoshikawa, Noriko Yamagishi, Shintaro Sasaki, Sadao Komori, Masato Wada, Norimitsu Tanaka