Patents by Inventor Hiroyasu Kawano

Hiroyasu Kawano 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: 20210294872
    Abstract: A method includes: calculating a reference solution and a reference value by solving an optimization problem using a dedicated solver based on a first parameter, the reference solution being specified by a plurality of bits in an objective function, the reference value being an energy value of the objective function associated with the reference solution; calculating an annealing solution and an annealing value by solving the optimization problem based on a plurality of second parameters, the annealing solution being specified by the plurality of bits, the annealing value being an energy value of the objective function associated with the annealing solution; and specifying a parameter to be used to solve the optimization problem by using a Hamming distance between a first bit state of the reference solution and a second bit state of the annealing solution and a difference between the annealing value and the reference value.
    Type: Application
    Filed: February 5, 2021
    Publication date: September 23, 2021
    Applicant: FUJITSU LIMITED
    Inventor: Hiroyasu KAWANO
  • Publication number: 20200011944
    Abstract: A magnetic characteristic measuring apparatus measures a magnetic characteristic of a sample having a core wound by a primary coil and a secondary coil with high accuracy at high frequency. The apparatus includes: an air-core coil wound by a primary coil and a secondary coil; and a capacitor. The primary coil of the sample, the primary coil of the air-core coil and the capacitor are serially connected, and the capacitance CL of the capacitor is selected as 1/3?2La?CL?1/?2La, wherein La is an inductance of the air-core coil at a frequency ?/2n.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 9, 2020
    Applicant: FUJITSU LIMITED
    Inventors: Hiroyasu KAWANO, Yuji Uehara, Hirotaka Oshima
  • Patent number: 10276900
    Abstract: A rechargeable battery includes: a battery body including a cylindrical outer peripheral side surface; and a power receiving coil wound in at most a single layer around the outer peripheral side surface, and electrically connected to the battery body. The power receiving coil is helically wound around the outer peripheral side surface while forming a space from which the outer peripheral side surface is exposed.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: April 30, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyasu Kawano, Akiyoshi Uchida, Satoshi Shimokawa, Kiyoto Matsui, Kazuyuki Ozaki, Masakazu Taguchi
  • Publication number: 20180197678
    Abstract: A wireless power transfer system includes a plurality of power sources and at least one power receiver, in which power transfer from the power sources to the power receiver is performed in wireless by using magnetic field resonance or electric field resonance. In the system, one of the plurality of power sources is designated as a master power source and the other one or more power sources are designated as slave power sources. In addition, the master power source controls the plurality of power sources and the at least one power receiver to perform the power transfer. This allows the system to perform the power transfer in an optimum state.
    Type: Application
    Filed: March 9, 2018
    Publication date: July 12, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Akiyoshi UCHIDA, Kazuyuki OZAKI, Masakazu TAGUCHI, Satoshi SHIMOKAWA, Hiroyasu KAWANO, Kiyoto MATSUI
  • Patent number: 9953763
    Abstract: A wireless power transfer system includes a plurality of power sources and at least one power receiver, in which power transfer from the power sources to the power receiver is performed in wireless by using magnetic field resonance or electric field resonance. In the system, one of the plurality of power sources is designated as a master power source and the other one or more power sources are designated as slave power sources. In addition, the master power source controls the plurality of power sources and the at least one power receiver to perform the power transfer. This allows the system to perform the power transfer in an optimum state.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: April 24, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Akiyoshi Uchida, Kazuyuki Ozaki, Masakazu Taguchi, Satoshi Shimokawa, Hiroyasu Kawano, Kiyoto Matsui
  • Patent number: 9704090
    Abstract: A package structure includes a first member that surrounds a semiconductor device, a heat insulating material that surrounds an outer side of the first member, and a second member that surrounds an outer side of the head insulating material. The heat insulating material has a density and a thermal conductivity lower than those of the first and second members. The first member has a heat capacity larger than that of the second member.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: July 11, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyasu Kawano, Kazuyuki Ozaki
  • Patent number: 9583949
    Abstract: A power receiving apparatus includes a power reception circuit, a first member having a cylindrical shape, a power receiving coil disposed on a cylinder side surface of the first member and connected through wires to the power reception circuit, and a resonance coil configured to be freely movable along the cylinder side surface in a circumferential direction around a cylinder center axis of the first member, wherein the power receiving coil and the resonance coil are coupled to each other through electromagnetic induction.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: February 28, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyasu Kawano, Akiyoshi Uchida, Kazuyuki Ozaki
  • Patent number: 9558884
    Abstract: A power transmission apparatus includes a cover part attached to one of a power transmitter and an electronic apparatus, the power transmitter including a primary-side coil connected to an alternating-current power supply and a primary-side resonant coil configured to receive power from the primary-side coil by electromagnetic induction, the electronic apparatus including a secondary-side coil; and a secondary-side resonant coil disposed in the cover part, and configured to transmit to the secondary-side coil the power received from the primary-side resonant coil by magnetic field resonance generated between the primary-side resonant coil and the secondary-side resonant coil.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: January 31, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Satoshi Shimokawa, Akiyoshi Uchida, Hiroyasu Kawano, Kiyoto Matsui, Masakazu Taguchi
  • Patent number: 9362985
    Abstract: A portable apparatus includes a case, a coil situated inside the case, a circuit disposed inside the case to receive power based on a first frequency via the coil and to perform communication based on a second frequency higher than the first frequency, and a magnetic shield having a first portion and a second portion stacked one over another in a direction perpendicular to the coil between the coil and an inside of the case, the second portion being closer to the coil than the first portion, wherein permeability of the first portion is higher than permeability of the second portion situated toward the coil with respect to the first frequency.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: June 7, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Akiyoshi Uchida, Masakazu Taguchi, Satoshi Shimokawa, Kiyoto Matsui, Hiroyasu Kawano
  • Patent number: 9350196
    Abstract: A non-contact charging apparatus configured to, vary the inductance and the capacitance of the matching unit for matching the impedance of the power supply system that supplies alternate current power and the impedance of the power transmitting/receiving system including a power transmitting unit and a power receiving apparatus according to the variable information.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: May 24, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Akiyoshi Uchida, Masakazu Taguchi, Kiyoto Matsui, Hiroyasu Kawano, Satoshi Shimokawa
  • Publication number: 20160049698
    Abstract: A rechargeable battery includes: a battery body including a cylindrical outer peripheral side surface; and a power receiving coil wound in at most a single layer around the outer peripheral side surface, and electrically connected to the battery body. The power receiving coil is helically wound around the outer peripheral side surface while forming a space from which the outer peripheral side surface is exposed.
    Type: Application
    Filed: October 29, 2015
    Publication date: February 18, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Hiroyasu KAWANO, Akiyoshi UCHIDA, Satoshi SHIMOKAWA, Kiyoto MATSUI, Kazuyuki OZAKI, Masakazu TAGUCHI
  • Publication number: 20150332140
    Abstract: A package structure includes a first member that surrounds a semiconductor device, a heat insulating material that surrounds an outer side of the first member, and a second member that surrounds an outer side of the head insulating material. The heat insulating material has a density and a thermal conductivity lower than those of the first and second members. The first member has a heat capacity larger than that of the second member.
    Type: Application
    Filed: July 30, 2015
    Publication date: November 19, 2015
    Inventors: Hiroyasu KAWANO, Kazuyuki Ozaki
  • Patent number: 9130386
    Abstract: A wireless power transmitting device includes a housing configured to have a feeding surface on which a power receiving device is to be placed; a power transmitting coil disposed inside the housing and configured to have a central axis that intersects with the feeding surface; and an alternating-current power supply configured to supply power to the power transmitting coil, wherein the feeding surface has raised and recessed portions in an area corresponding to a region inside an outer region of the power transmitting coil.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: September 8, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyasu Kawano, Kiyoto Matsui, Masakazu Taguchi, Satoshi Shimokawa, Akiyoshi Uchida
  • Publication number: 20150008736
    Abstract: A wireless power transfer system includes a plurality of power sources and at least one power receiver, in which power transfer from the power sources to the power receiver is performed in wireless by using magnetic field resonance or electric field resonance. In the system, one of the plurality of power sources is designated as a master power source and the other one or more power sources are designated as slave power sources. In addition, the master power source controls the plurality of power sources and the at least one power receiver to perform the power transfer. This allows the system to perform the power transfer in an optimum state.
    Type: Application
    Filed: September 22, 2014
    Publication date: January 8, 2015
    Inventors: Akiyoshi Uchida, Kazuyuki Ozaki, MASAKAZU TAGUCHI, SATOSHI SHIMOKAWA, Hiroyasu KAWANO, Kiyoto Matsui
  • Publication number: 20140333152
    Abstract: A power receiving apparatus includes a power reception circuit, a first member having a cylindrical shape, a power receiving coil disposed on a cylinder side surface of the first member and connected through wires to the power reception circuit, and a resonance coil configured to be freely movable along the cylinder side surface in a circumferential direction around a cylinder center axis of the first member, wherein the power receiving coil and the resonance coil are coupled to each other through electromagnetic induction.
    Type: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Inventors: Hiroyasu KAWANO, Akiyoshi Uchida, Kazuyuki Ozaki
  • Publication number: 20140253029
    Abstract: A non-contact charging apparatus configured to, vary the inductance and the capacitance of the matching unit for matching the impedance of the power supply system that supplies alternate current power and the impedance of the power transmitting/receiving system including a power transmitting unit and a power receiving apparatus according to the variable information.
    Type: Application
    Filed: May 22, 2014
    Publication date: September 11, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Akiyoshi Uchida, MASAKAZU TAGUCHI, Kiyoto Matsui, Hiroyasu KAWANO, SATOSHI SHIMOKAWA
  • Publication number: 20140159502
    Abstract: A power transmission apparatus includes a cover part attached to one of a power transmitter and an electronic apparatus, the power transmitter including a primary-side coil connected to an alternating-current power supply and a primary-side resonant coil configured to receive power from the primary-side coil by electromagnetic induction, the electronic apparatus including a secondary-side coil; and a secondary-side resonant coil disposed in the cover part, and configured to transmit to the secondary-side coil the power received from the primary-side resonant coil by magnetic field resonance generated between the primary-side resonant coil and the secondary-side resonant coil.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 12, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Satoshi Shimokawa, Akiyoshi Uchida, Hiroyasu Kawano, Kiyoto Matsui, Masakazu Taguchi
  • Patent number: 8666459
    Abstract: Cellular phones include a power reception resonance coil arranged inside a first outer surface side of a housing, a power extracting unit for extracting power of an induction current of the power reception resonance coil, a magnetic core that has one end arranged inside the first outer surface side and the other end arranged inside a second outer surface side of the housing, and penetrates into the power reception resonance coil, and a printed board that is arranged in a space between the first outer surface and the second outer surface and has an area where circuit elements are not arranged on a periphery of the core.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 4, 2014
    Assignee: Fujitsu Limited
    Inventors: Kiyoto Matsui, Masakazu Taguchi, Hiroyasu Kawano, Satoshi Shimokawa, Akiyoshi Uchida
  • Publication number: 20130249312
    Abstract: A portable apparatus includes a case, a coil situated inside the case, a circuit disposed inside the case to receive power based on a first frequency via the coil and to perform communication based on a second frequency higher than the first frequency, and a magnetic shield having a first portion and a second portion stacked one over another in a direction perpendicular to the coil between the coil and an inside of the case, the second portion being closer to the coil than the first portion, wherein permeability of the first portion is higher than permeability of the second portion situated toward the coil with respect to the first frequency.
    Type: Application
    Filed: May 23, 2013
    Publication date: September 26, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Akiyoshi Uchida, MASAKAZU TAGUCHI, SATOSHI SHIMOKAWA, Kiyoto Matsui, Hiroyasu KAWANO
  • Publication number: 20130005408
    Abstract: Cellular phones include a power reception resonance coil arranged inside a first outer surface side of a housing, a power extracting unit for extracting power of an induction current of the power reception resonance coil, a magnetic core that has one end arranged inside the first outer surface side and the other end arranged inside a second outer surface side of the housing, and penetrates into the power reception resonance coil, and a printed board that is arranged in a space between the first outer surface and the second outer surface and has an area where circuit elements are not arranged on a periphery of the core.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Kiyoto MATSUI, Masakazu TAGUCHI, Hiroyasu KAWANO, Satoshi SHIMOKAWA, Akiyoshi UCHIDA