Patents by Inventor Kazuyuki Matsushita

Kazuyuki Matsushita 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: 11049897
    Abstract: A detector capable of securing space for arranging pixels in the vicinity of edges of adjacent readout chips according to design of counting circuits. A 2-dimensional hybrid pixel array detector configured to detect radiation rays, including a detection unit configured to detect the radiation rays incident in a region of each pixel 115, and a plurality of the readout chips including counting circuits 121 respectively connected to each of the pixels 115, the counting circuits 121 having a smaller set pitch than the pixels 115 along a certain direction in a detection surface. The regions occupied by the pixels and counting circuits corresponding to the pixels overlapping at least partially, and the connection being made in the overlapping regions.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: June 29, 2021
    Assignee: RIGAKU CORPORATION
    Inventors: Takuto Sakumura, Yasukazu Nakaye, Kazuyuki Matsushita, Satoshi Mikusu
  • Patent number: 10869598
    Abstract: An eyeball optical measuring device includes: an optical measuring unit that irradiates an eyeball of a subject with measuring light to perform an optical measurement of the eyeball; and a light irradiation unit that irradiates the eyeball with irradiation light prior to the optical measurement by the optical measuring unit, the irradiation light having a lower energy density than an energy density of the measuring light.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: December 22, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hideaki Ozawa, Kazuyuki Matsushita, Kazutaka Takeda, Kouhei Yukawa, Taku Kinoshita, Hideo Nakayama
  • Patent number: 10748253
    Abstract: A processing apparatus that enables margin correction of X-ray intensity data includes a calculation unit configured to calculate an expansion rate of X-ray intensity data detected in a unit region on a marginal side on a basis of an intensity distribution resulted from detection of uniform X-ray and a first function generation unit configured to generate an allocation function that allocates the X-ray intensity data detected in the unit region on the marginal side to an outside unit region, on the basis of the expansion rate. Enabling margin correction on the basis of the intensity distribution resulting from detection of uniform X-ray makes it possible to correct the distortion of intensity distribution on the marginal side. As a result, it is possible to expand the detection region of X-ray intensity data.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: August 18, 2020
    Assignee: RIGAKU CORPORATION
    Inventors: Takuto Sakumura, Yasukazu Nakaye, Kazuyuki Matsushita
  • Publication number: 20200085358
    Abstract: A biological-information measuring apparatus includes an informing unit that informs a subject whose biological information is to be measured of a reference rhythm that is predetermined as a rhythm suitable for measurement of the biological information, a measured value of which varies in accordance with a breathing state of the subject, in such a manner that a breathing rhythm of the subject becomes close to the reference rhythm and a measuring unit that measures the biological information of the subject who performs breathing to the reference rhythm, which is given to the subject by the informing unit.
    Type: Application
    Filed: August 19, 2019
    Publication date: March 19, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kazuhiro SAKAI, Kazuyuki MATSUSHITA, Hideaki OZAWA, Hideyuki UMEKAWA, Kouhei YUKAWA, Manabu AKAMATSU
  • Patent number: 10551510
    Abstract: Provided are a data processing apparatus a method of obtaining the characteristic of each pixel and a method of data processing, and a program. A data processing apparatus 100 to correct X-ray intensity data measured by a pixel detector includes a characteristic storage unit 130 to store the characteristic of each pixel in a specific detector, a correction table generation unit 120 to apply a measurement condition input as that in measurement by a specific detector and a value expressing the characteristic of each pixel to an approximate formula expressing the count value of each pixel and to generate a correction table for the specific detector using the calculation result of the approximate formula, and a correction unit 160 to correct the X-ray intensity data measured by the specific detector using the generated correction table.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: February 4, 2020
    Assignee: RIGAKU CORPORATION
    Inventors: Takuto Sakumura, Yasukazu Nakaye, Yuji Tsuji, Koichi Kajiyoshi, Takeyoshi Taguchi, Kazuyuki Matsushita
  • Publication number: 20190290194
    Abstract: A biometric information measuring apparatus includes: a notification unit that notifies a subject holding breath to resume breathing when a specified time to hold breath is reached; and a measuring unit that measures an oxygen circulation time representing a time required for oxygen taken into a body of the subject by resumption of breathing by the subject to reach a predetermined site.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 26, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hideyuki UMEKAWA, Manabu AKAMATSU, Kazuhiro SAKAI, Hideaki OZAWA, Kazuyuki MATSUSHITA, Kohei YUKAWA
  • Publication number: 20190245000
    Abstract: A detector capable of securing space for arranging pixels in the vicinity of edges of adjacent readout chips according to design of counting circuits. A 2-dimensional hybrid pixel array detector configured to detect radiation rays, including a detection unit configured to detect the radiation rays incident in a region of each pixel 115, and a plurality of the readout chips including counting circuits 121 respectively connected to each of the pixels 115, the counting circuits 121 having a smaller set pitch than the pixels 115 along a certain direction in a detection surface. The regions occupied by the pixels and counting circuits corresponding to the pixels overlapping at least partially, and the connection being made in the overlapping regions.
    Type: Application
    Filed: July 5, 2017
    Publication date: August 8, 2019
    Applicant: RIGAKU CORPORATION
    Inventors: TAKUTO SAKUMURA, YASUKAZU NAKAYE, KAZUYUKI MATSUSHITA, SATOSHI MIKUSU
  • Patent number: 10349831
    Abstract: An optical measuring instrument 1 is equipped with an optical system 20 to be used for measuring a characteristic of the aqueous humor in the anterior chamber 13 of an eyeball 10 of a measurement subject person and a holding unit 50 which holds the optical system 20 etc. The optical system 20 is equipped with a light emitting system 20A and a photodetecting system 20B. An optical path 28 is set so that light emitted from the light emitting system 20A passes through (traverses) the anterior chamber 13 and is detected by the photodetecting system 20B in a state that the eyeball 10 is turned outward.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: July 16, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kazuyuki Matsushita, Kazutaka Takeda, Kohei Yukawa, Hideaki Ozawa, Taku Kinoshita, Hideo Nakayama
  • Publication number: 20190114746
    Abstract: A processing apparatus that enables margin correction of X-ray intensity data includes a calculation unit configured to calculate an expansion rate of X-ray intensity data detected in a unit region on a marginal side on a basis of an intensity distribution resulted from detection of uniform X-ray and a first function generation unit configured to generate an allocation function that allocates the X-ray intensity data detected in the unit region on the marginal side to an outside unit region, on the basis of the expansion rate. Enabling margin correction on the basis of the intensity distribution resulting from detection of uniform X-ray makes it possible to correct the distortion of intensity distribution on the marginal side. As a result, it is possible to expand the detection region of X-ray intensity data.
    Type: Application
    Filed: October 16, 2018
    Publication date: April 18, 2019
    Inventors: Takuto Sakumura, Yasukazu Nakaye, Kazuyuki Matsushita
  • Patent number: 10222491
    Abstract: The X-ray data processing apparatus to estimate a true value from an X-ray count value detected by the pixel array X-ray detector of a photon counting system includes a management unit 210 to receive and manage a detection value for each detection part, an effective area ratio calculation unit 230 to calculate a ratio of a detection ability under the influence of the charge share to an original detection ability in the detection part as an effective area ratio of the detection part using data regarding the detection part and data regarding an X-ray source and a detection energy threshold value, and a correction unit 250 to correct the managed count value using the calculated effective area ratio to estimate a true value.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: March 5, 2019
    Assignee: RIGAKU CORPORATION
    Inventors: Kazuyuki Matsushita, Takuto Sakumura, Yasukazu Nakaye
  • Patent number: 10209375
    Abstract: An X-ray data processing apparatus for processing X-ray data that is obtained by simultaneously measuring X-rays of multiple wavelengths. The apparatus includes a management unit 210 to receive and manage X-ray data that is detected by a detector, a calculation unit 230 which calculates a detection amount of charge sharing events in lower energy side data caused by higher energy X-ray, based on the higher energy side data obtained using a threshold value on a higher energy side and the lower energy side data obtained using a threshold value on a lower energy side of the received X-ray data, and a correction unit 250 to reconfigure the lower energy side data using the calculated detection amount. The apparatus can remove a residual image of an X-ray on a higher energy side which remains in data on a lower energy side.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: February 19, 2019
    Assignee: RIGAKU CORPORATION
    Inventors: Kazuyuki Matsushita, Takuto Sakumura, Yasukazu Nakaye
  • Publication number: 20180203132
    Abstract: Provided are a data processing apparatus a method of obtaining the characteristic of each pixel and a method of data processing, and a program. A data processing apparatus 100 to correct X-ray intensity data measured by a pixel detector includes a characteristic storage unit 130 to store the characteristic of each pixel in a specific detector, a correction table generation unit 120 to apply a measurement condition input as that in measurement by a specific detector and a value expressing the characteristic of each pixel to an approximate formula expressing the count value of each pixel and to generate a correction table for the specific detector using the calculation result of the approximate formula, and a correction unit 160 to correct the X-ray intensity data measured by the specific detector using the generated correction table.
    Type: Application
    Filed: July 10, 2015
    Publication date: July 19, 2018
    Applicant: Rigaku Corporation
    Inventors: Takuto SAKUMURA, Yasukazu NAKAYE, Yuji TSUJI, Koichi KAJIYOSHI, Takeyoshi TAGUCHI, Kazuyuki MATSUSHITA
  • Publication number: 20180153398
    Abstract: An eyeball optical measurement apparatus includes a light radiating unit that radiates light toward an anterior chamber of an eyeball of a measurement subject; a light receiving unit that receives the light that has passed through the anterior chamber; an eyeball observation unit that observes an optical path relative to the eyeball while the light is radiated from the light radiating unit; and a controller that controls the light radiating unit so as to change a position at which the eyeball is irradiated with the light on the basis of a result of the observation of the eyeball by the eyeball observation unit.
    Type: Application
    Filed: October 25, 2017
    Publication date: June 7, 2018
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Junichiro HAYAKAWA, Kouhei YUKAWA, Kazuyuki MATSUSHITA
  • Patent number: 9945961
    Abstract: There are provided a radiation detector capable of detecting radiation without occurrence of dead time while maintaining an exposure state in which radiation enters continuously, and an X-ray analysis apparatus and a radiation detection method using the radiation detector. A radiation detector 100 that detects radiation in synchronization with an external apparatus 200, includes: a sensor 110 that generates pulses when radiation particles are detected; a plurality of counters 140a, 140b provided so as to be able to count the pulses; and a control circuit 160 configured to switch a counter to count the pulses among the plurality of counters 140a, 140b, when receiving a synchronization signal from the external apparatus 200.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: April 17, 2018
    Assignee: RIGAKU CORPORATION
    Inventors: Takuto Sakumura, Yasukazu Nakaye, Masataka Maeyama, Kazuyuki Matsushita
  • Publication number: 20180098695
    Abstract: An eyeball optical measuring device includes: an optical measuring unit that irradiates an eyeball of a subject with measuring light to perform an optical measurement of the eyeball; and a light irradiation unit that irradiates the eyeball with irradiation light prior to the optical measurement by the optical measuring unit, the irradiation light having a lower energy density than an energy density of the measuring light.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 12, 2018
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hideaki OZAWA, Kazuyuki MATSUSHITA, Kazutaka TAKEDA, Kouhei YUKAWA, Taku KINOSHITA, Hideo NAKAYAMA
  • Patent number: 9936874
    Abstract: An optical measurement apparatus includes: an emission section that emits light such that the light travels across an anterior chamber of an eyeball of a measurement subject; a light reception section that receives light that is emitted from the emission section and travels across the anterior chamber; and a positioning section that performs positioning of one of the emission section and the light reception section at a position where skin on a periphery of an inner canthus of the eyeball is squeezed into an eye socket accommodating the eyeball.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 10, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Saori Nishizaki, Taku Kinoshita, Kazutaka Takeda, Hideaki Ozawa, Kazuyuki Matsushita, Kohei Yukawa, Sho Kimura, Hideo Nakayama
  • Publication number: 20170371044
    Abstract: There are provided a radiation detector capable of detecting radiation without occurrence of dead time while maintaining an exposure state in which radiation enters continuously, and an X-ray analysis apparatus and a radiation detection method using the radiation detector. A radiation detector 100 that detects radiation in synchronization with an external apparatus 200, includes: a sensor 110 that generates pulses when radiation particles are detected; a plurality of counters 140a, 140b provided so as to be able to count the pulses; and a control circuit 160 configured to switch a counter to count the pulses among the plurality of counters 140a, 140b, when receiving a synchronization signal from the external apparatus 200.
    Type: Application
    Filed: August 18, 2017
    Publication date: December 28, 2017
    Applicant: Rigaku Corporation
    Inventors: Takuto SAKUMURA, Yasukazu NAKAYE, Masataka MAEYAMA, Kazuyuki MATSUSHITA
  • Patent number: 9851293
    Abstract: A concentration calculation system calculates a concentration of the optically active substance based on a formula. The formula includes a first function representing wavelength dependence of an optical rotation of a first optically-active substance, and a second function representing wavelength dependence of an optical rotation of a second optically-active substance. In the first function, concentration of the first optically-active substance has an unknown value, and an inherent value for defining a characteristic of optical rotatory dispersion of the first optically-active substance is a known value or an unknown value within a certain limited range. In the second function, an inherent value for defining a characteristic of optical rotatory dispersion of the second optically-active substance is an unknown value.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: December 26, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kazutaka Takeda, Kazuyuki Matsushita, Kohei Yukawa, Hideaki Ozawa, Taku Kinoshita, Hideo Nakayama
  • Publication number: 20170202456
    Abstract: A measurement apparatus includes: an eyelid opening section that comes into contact with skin on a periphery of an eyeball of a measurement subject and maintains an eyelid of the measurement subject in an open state; an emission section that emits light such that the light travels across an anterior chamber of the eyeball in which the eyelid is maintained in an open state by the eyelid opening portion; and a light reception section that receives the light which travels across the anterior chamber.
    Type: Application
    Filed: March 31, 2017
    Publication date: July 20, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Saori NISHIZAKI, Hideo NAKAYAMA, Taku KINOSHITA, Kazutaka TAKEDA, Hideaki OZAWA, Kazuyuki MATSUSHITA, Kohei YUKAWA, Sho KIMURA
  • Publication number: 20170202458
    Abstract: An optical measurement apparatus includes: an emission section that emits light such that the light travels across an anterior chamber of an eyeball of a measurement subject; a light reception section that receives light that is emitted from the emission section and travels across the anterior chamber; and a positioning section that performs positioning of one of the emission section and the light reception section at a position where skin on a periphery of an inner canthus of the eyeball is squeezed into an eye socket accommodating the eyeball.
    Type: Application
    Filed: March 31, 2017
    Publication date: July 20, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Saori NISHIZAKI, Taku KINOSHITA, Kazutaka TAKEDA, Hideaki OZAWA, Kazuyuki MATSUSHITA, Kohei YUKAWA, Sho KIMURA, Hideo NAKAYAMA