Patents by Inventor Tetsuo Kobayashi

Tetsuo Kobayashi 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: 20220395350
    Abstract: A surgical robot includes a controller configured or programmed to control a display to superimpose guide information indicating a moving direction of a medical cart based on a steering angle of a steering device on an image captured by an imaging device and display the guide information.
    Type: Application
    Filed: June 10, 2022
    Publication date: December 15, 2022
    Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, MEDICAROID CORPORATION
    Inventors: Ayataka KOBAYASHI, Tetsuo ICHII, Hirofumi YAMAMORI, Hideo KAWABATA, Hiroaki KITATSUJI
  • Publication number: 20220386888
    Abstract: A brain measurement apparatus includes: a static magnetic field forming unit for forming a static magnetic field in a measurement area; a gradient magnetic field coil for forming a gradient magnetic field in the measurement area; a transmission coil for transmitting a transmission pulse toward a subject in the measurement area; a detection coil for detecting a nuclear magnetic resonance signal generated in the subject by transmission of the transmission pulse; and a generator for generating an MR image based on the nuclear magnetic resonance signal detected by the detection coil.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 8, 2022
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Takahiro MORIYA, Takenori OIDA, Akinori SAITO, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Publication number: 20220386873
    Abstract: A brain measurement apparatus configured to generate an MR image and a brain's magnetic field distribution of a subject includes: an MRI module having a transmission coil configured to transmit a transmission pulse toward the subject and a detection coil configured to detect a nuclear magnetic resonance signal generated in the subject by the transmission pulse; an optically pumped magnetometer configured to detect a brain's magnetic field of the subject; a generator configured to generate the MR image based on the nuclear magnetic resonance signal detected by the detection coil and generating the brain's magnetic field distribution based on the brain's magnetic field detected by the optically pumped magnetometer; a marker displayed on the MR image generated by the generator; and a helmet-type frame to which the detection coil, the optically pumped magnetometer, and the marker are attached and which is attached to a head of the subject.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 8, 2022
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Takenori OIDA, Takahiro MORIYA, Akinori SAITO, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Publication number: 20220390533
    Abstract: An optically pumped magnetometer includes cells configured to form a first cell region and a second cell region on a measurement target, a pump laser, a probe laser, a first optical system configured to cause pump light to be incident on the first cell region, a second optical system configured to cause the pump light having passed through the first cell region to be incident on the second cell region, a third optical system configured to cause first probe light to be incident on the first cell region, a fourth optical system configured to cause second probe light to be incident on the second cell region, detection portions configured to detect the first probe light having passed through the first cell region and the second probe light having passed through the second cell region, and a deriving portion configured to derive an intensity of a magnetic field.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 8, 2022
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Akinori SAITO, Takahiro MORIYA, Takenori OIDA, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Publication number: 20220378343
    Abstract: A vital sign information processing system includes a sensor configured to be attached to a living body, and an information acquisition apparatus configured to acquire vital sign information of the living body through the sensor. A first memory is disposed in the sensor and stores first site information indicative of a site at which the sensor is to be used. A second memory is disposed in the information acquisition apparatus and stores second site information indicative of a site at which the information acquisition apparatus is to be used. A processor disposed in the information acquisition apparatus causes the information acquisition apparatus to perform notification when the first site information and the second site information are not matched.
    Type: Application
    Filed: August 11, 2022
    Publication date: December 1, 2022
    Inventors: Hideki FUJISAKI, Kazumasa ITO, Naoki KOBAYASHI, Kumi SUGIYAMA, Tetsuo SUZUKI, Masahiro TAKEUCHI, Jiongxun CHEN
  • Patent number: 11500043
    Abstract: A magnetoencephalograph M1 includes: multiple pump-probe type optically pumped magnetometers 1A; a bias magnetic field forming coil 15 for applying a bias magnetic field in the same direction as a direction of pump light of each of the multiple pump-probe type optically pumped magnetometers 1A and in a direction approximately parallel to a scalp; a control device 5 that determines a current for the bias magnetic field forming coil and outputs a control signal corresponding to the determined current; and a coil power supply 6 that outputs a current to the bias magnetic field forming coil in response to the control signal output from the control device.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: November 15, 2022
    Assignees: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Akinori Saito, Takahiro Moriya, Takenori Oida, Motohiro Suyama, Tetsuo Kobayashi
  • Patent number: 11445949
    Abstract: A vital sign information processing system includes a sensor configured to be attached to a living body, and an information acquisition apparatus configured to acquire vital sign information of the living body through the sensor. A first memory is disposed in the sensor and stores first site information indicative of a site at which the sensor is to be used. A second memory is disposed in the information acquisition apparatus and stores second site information indicative of a site at which the information acquisition apparatus is to be used. A processor disposed in the information acquisition apparatus causes the information acquisition apparatus to perform notification when the first site information and the second site information are not matched.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: September 20, 2022
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Hideki Fujisaki, Kazumasa Ito, Naoki Kobayashi, Kumi Sugiyama, Tetsuo Suzuki, Masahiro Takeuchi, Jiongxun Chen
  • Publication number: 20210386346
    Abstract: A magnetoencephalograph M1 includes: multiple optically pumped magnetometers 1A that measure a brain's magnetic field; multiple magnetic sensors for geomagnetic field cancellation 2 that measure a magnetic field; multiple magnetic sensors for active shield 3 that measure a fluctuating magnetic field; a geomagnetic field nulling coil; an active shield coil 9; a control device 5 that determines a current to generate a magnetic field for canceling the magnetic field based on measured values of the multiple magnetic sensors for geomagnetic field cancellation 2, determines a current to generate a magnetic field for canceling the fluctuating magnetic field based on measured values of the multiple magnetic sensors for active shield 3, and outputs a control signal corresponding to each of the determined currents; and a coil power supply 6 that outputs a current to each coil in response to the control signal.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 16, 2021
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Takahiro MORIYA, Takenori OIDA, Akinori SAITO, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Publication number: 20210389396
    Abstract: An optically pumped magnetometer 1 includes: a cell 2; a pump laser 7 that emits pump light; one or more pump light mirrors that cause the pump light guided in a first direction; a probe laser 8 that emits probe light; a splitting unit 12 that splits the probe light into multiple light components; one or more probe light mirrors that cause each of the probe light components guided in a second direction, which is a direction perpendicular to the first direction; a detection unit that detects each of the probe light components perpendicular to the pump light inside the cell 2; and a derivation unit that derives a magnetic field corresponding to a region where each of the probe light components and the pump light are perpendicular to each other based on a detection result of the detection unit.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 16, 2021
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Akinori SAITO, Takahiro MORIYA, Takenori OIDA, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Publication number: 20210389397
    Abstract: A magnetoencephalograph M1 includes: multiple pump-probe type optically pumped magnetometers 1A; a bias magnetic field forming coil 15 for applying a bias magnetic field in the same direction as a direction of pump light of each of the multiple pump-probe type optically pumped magnetometers 1A and in a direction approximately parallel to a scalp; a control device 5 that determines a current for the bias magnetic field forming coil and outputs a control signal corresponding to the determined current; and a coil power supply 6 that outputs a current to the bias magnetic field forming coil in response to the control signal output from the control device.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 16, 2021
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Akinori SAITO, Takahiro MORIYA, Takenori OIDA, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Publication number: 20210389400
    Abstract: A brain measurement apparatus includes: a magnetoencephalograph including optically pumped magnetometers, magnetic sensors for measuring a static magnetic field at positions of the optically pumped magnetometers, and a nulling coil for canceling the static magnetic field; an MRI apparatus including a permanent magnet, a gradient magnetic field coil, a transmission coil, and a receive coil for detecting a nuclear magnetic resonance signal; and a control device that, when measuring the brain's magnetic field, controls a current to be supplied to the nulling coil based on measured values of the magnetic sensors and operates so as to cancel a static magnetic field at the position of each of the optically pumped magnetometers and, when measuring an MR image, controls the gradient magnetic field by controlling a current to be supplied to the gradient magnetic field coil and generates an MR image based on an output of the receive coil.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 16, 2021
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Takenori OIDA, Takahiro MORIYA, Akinori SAITO, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Publication number: 20210386347
    Abstract: A brain measurement apparatus includes: a magnetoencephalograph including optically pumped magnetometers, magnetic sensors for measuring geomagnetic field at positions of the optically pumped magnetometers, magnetic sensors for measuring a fluctuating magnetic field at the positions of the optically pumped magnetometers, nulling coils for cancelling the geomagnetic field, and an active shield coil for cancelling the fluctuating magnetic field; an MRI apparatus including nulling coils for applying a static magnetic field and a gradient magnetic field, a transmission coil, and a receive coil; and a control device that, when measuring a brain's magnetic field, controls currents supplied to the nulling coils and the active shield coil based on measured values of the magnetic sensors and, when measuring an MR image, controls the static magnetic field and the gradient magnetic field by controlling currents supplied to the nulling coils and generates an MR image from an output of the receive coil.
    Type: Application
    Filed: June 14, 2021
    Publication date: December 16, 2021
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Takahiro MORIYA, Takenori OIDA, Akinori SAITO, Motohiro SUYAMA, Tetsuo KOBAYASHI
  • Patent number: 11099245
    Abstract: A cell for a optically pumped magnetic sensor measures magnetic field by setting alkali metal atoms to a predetermined excitation state by a pump beam and detecting the excitation state by a probe beam. The cell is provided with a glass substrate which seals the alkali metal atoms and an enclosing gas and transmits the pump beam and the probe beam and a coating layer provided on an inner surface of the glass substrate. The coating layer is made of an inorganic material.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: August 24, 2021
    Assignees: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Tetsuo Kobayashi, Norihisa Kato, Motohiro Suyama
  • Publication number: 20200064421
    Abstract: A cell for a optically pumped magnetic sensor measures magnetic field by setting alkali metal atoms to a predetermined excitation state by a pump beam and detecting the excitation state by a probe beam. The cell is provided with a glass substrate which seals the alkali metal atoms and an enclosing gas and transmits the pump beam and the probe beam and a coating layer provided on an inner surface of the glass substrate. The coating layer is made of an inorganic material.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Applicants: HAMAMATSU PHOTONICS K.K., Kyoto University
    Inventors: Tetsuo KOBAYASHI, Norihisa KATO, Motohiro SUYAMA
  • Patent number: 10288701
    Abstract: Provided is an optically pumped atomic magnetometer that can separate and acquire magnetic information of spatially different places at the same time by one probe beam. The optically pumped atomic magnetometer includes a cell containing alkali metal atoms, a pump beam optical system introducing pump beams including circularly polarized light component to different locations of the cell, a probe beam optical system introducing a probe beam including linearly polarized light component to the cell, a detection unit detecting a signal reflecting a rotation angle of a plane of polarization of the probe beam after intersecting with the pump beams, and an information acquisition unit acquiring information related to a magnetic field intensity of each of the different locations from the detected signal. The pump beam optical system includes a modulation unit modulating the pump beams so that one of frequencies and phases of the pump beams is different.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: May 14, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Kobayashi, Yosuke Ito, Sunao Ichihara, Natsuhiko Mizutani
  • Patent number: 9964609
    Abstract: There is provided an optically pumped magnetometer, in which a pump light having a first wavelength to spin-polarize a first alkali-metal atom group is made to enter a cell containing the first alkali-metal atom group and a second alkali-metal atom group interacting via spin exchange with the first alkali-metal atom group, a probe light having a second wavelength different from the first wavelength to measure spin polarization of the second alkali-metal atom group is made to enter the cell to form the same optical axis as the pump light, a wavelength discrimination unit is provided to discriminate between the pump light and the probe light that passed through the cell depending on a different in wavelength, and the rotation angle of a polarization plane of the probe light that passed through the cell is measured so that the degree of flexibility of the device layout can be increased.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: May 8, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Sunao Ichihara, Natsuhiko Mizutani, Tetsuo Kobayashi, Shuji Taue
  • Publication number: 20170023654
    Abstract: Provided are an optically pumped magnetometer, comprising: at least one cell containing alkali metal atoms; a pump light optical system configured to cause pump light to enter the cell; a probe light optical system configured to cause probe light to enter the at least one cell so as to intersect with the pump light in the at least one cell; a relaxing light optical system configured to cause a plurality of relaxing lights to enter different positions in an intersection region between the pump light and the probe light; a unit configured to detect the probe light having intersected with the pump light and the plurality of relaxing lights, to thereby output a detection signal; and a unit configured to acquire information on a magnetic field intensity of each of the different positions from the detection signal.
    Type: Application
    Filed: July 6, 2016
    Publication date: January 26, 2017
    Inventors: Tetsuo Kobayashi, Yosuke Ito, Sunao Ichihara, Natsuhiko Mizutani
  • Publication number: 20170023653
    Abstract: An optically pumped magnetometer and a magnetic sensing method are provided. The optically pumped magnetometer is an atomic magnetic sensor that measures a magnetic field at multiple locations in a single cell and that can separate and simultaneously measure magnetic information of spatially different places in a configuration in which a plurality of probe lights or pump lights are radiated. An optically pumped magnetometer and a magnetic sensing method are provided which, by radiating a relaxing light between a plurality of measurement regions constituted by a pump light and a probe light, prevent mixing of spin polarization and separate spatially different magnetic signals with high accuracy.
    Type: Application
    Filed: July 6, 2016
    Publication date: January 26, 2017
    Inventors: Tetsuo Kobayashi, Yosuke Ito, Sunao Ichihara, Natsuhiko Mizutani
  • Patent number: 9383419
    Abstract: A gradiometer in which a probe beam for reading sequentially passes through two magnetic field measurement regions to obtain signals according to magnetic flux densities of the respective regions is formed using an optically pumped magnetometer. In particular, in a gradiometer using a high sensitivity optically pumped magnetometer, a geometric arrangement enabling obtainment of a large signal from a dipole moment as a signal source is defined.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: July 5, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Natsuhiko Mizutani, Tetsuo Kobayashi
  • Patent number: 9310220
    Abstract: A minimum remaining driving range estimated to be the distance which the vehicle can travel on the remaining battery power, in a case where a power load which accessories capable of receiving electric power from a battery place on the battery is the greatest within a variable range in accordance with input of operations, and a maximum remaining driving range estimated to be the distance which the vehicle can travel on the remaining battery power, in a case where the power load is the smallest within the variable range, are displayed on a display unit.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: April 12, 2016
    Assignee: FUJI JUKOGYO KABUSHIKI KAISHA
    Inventors: Mitsunori Ishii, Masato Sakurai, Tetsuo Kobayashi