Patents by Inventor Kiwamu Kudo

Kiwamu Kudo 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: 20210290145
    Abstract: An information analysis apparatus includes a feature quantity calculation unit and an output unit. The feature quantity calculation unit is configured to calculate a feature quantity on a biological body of a single subject or a group of a plurality of subjects, from data groups acquired under N acquisition conditions (k) where N is equal to or larger than three. The output unit is configured to output the feature quantity. The feature quantity is represented by Expression (1) below using numbers of acquisitions (nk), average values (<Xk>), unbiased variances (Sk2), and contribution ratios (wk) under the acquisition conditions (k).
    Type: Application
    Filed: March 3, 2021
    Publication date: September 23, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshihiro MISAKA, Hirofumi MORISE, Kiwamu KUDO
  • Publication number: 20210113141
    Abstract: A measuring device includes a stimulation instructing unit and an estimating unit. The stimulation instructing unit is configured to instruct a stimulating device to generate a plurality of stimulations corresponding to at least three fiducial points of brain anatomy data, the at least three fiducial points having been defined in the brain anatomy data. The estimating unit is configured to estimate, based on sensor output signals output from sensors configured to measure a brain activity signal of a subject who is a target to be measured, parts where brain activities occur due to the plurality of stimulations.
    Type: Application
    Filed: March 14, 2019
    Publication date: April 22, 2021
    Applicants: Ricoh Company, Ltd., National University Corporation Kanazawa University
    Inventors: Takashi IKEDA, Mitsuru KIKUCHI, Yuko YOSHIMURA, Hirofumi MORISE, Kiwamu KUDO, Yoshihiro MISAKA, Eiichi OKUMURA
  • Publication number: 20200305747
    Abstract: A biological information measuring apparatus includes a cover member and a hardware processor. The cover member is provided with sensors for detecting biological signals to cover a position of a biological part of a subject. The hardware processor is configured to estimate a positional relation of the position of the biological part of the subject with respect to the cover member at a first time point. The hardware processor superimposes first point cloud and second point cloud. The first point cloud is acquired by a non-contact mechanism front the subject at the first time point and represents a surface of the biological part of the subject in a coordinate system of the sensors. The second point cloud is created based on a morphological image of the subject captured by a biological structure acquiring apparatus and represents the surface of the biological part of the subject.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Kiwamu KUDO, Yoshihiro MISAKA, Noriyuki TOMITA, Hirofumi MORISE
  • Publication number: 20200289008
    Abstract: A brain response measurement system includes a stimulation timing control unit calculating, based on a delay time from a brain response to first stimulation in a first brain area to a brain response to a second stimulation in the first brain area, and a delay time from a brain response to the second stimulation in the second brain area to a brain response to the first stimulation in the second brain area, start and end times of the first stimulation and start and end times of the second stimulation that cause the brain response to the first stimulation in the first brain area and the brain response to the second stimulation in the first brain area not to overlap and cause the brain response to the second stimulation in the second brain area and the brain response to the first stimulation in the second brain area not to overlap.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 17, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshihiro MISAKA, Hirofumi MORISE, Kiwamu KUDO
  • Publication number: 20200100695
    Abstract: A biological information measurement system includes a dewar, a single imaging device, and a hardware processor. The dewar covers a head of a subject and contains sensors that are arranged for detecting biological signals. The single imaging device acquires an image in which three or more reference points and the dewar are captured, the reference points being set in relation to the subject. The hardware processor is configured to: measure brain neural activity of the subject based on the biological signals detected by the sensors; determine positional relationships between the reference points of the subject and the sensors based on the reference points and positional relationship data of the dewar; and re-determine the positional relationships between the reference point of the subject and the sensors, based on images that are acquired by the single imaging device at different times.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 2, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshihiro MISAKA, Hirofumi Morise, Kiwamu Kudo
  • Patent number: 10445639
    Abstract: According to an embodiment, a machine learning apparatus includes an interlayer accelerator. The interlayer accelerator includes interlayer units that generate, based on (a) an input vector of a first layer included in a neural network that includes three or more layers and (b) a learning weight matrix of the first layer, an input vector of a second layer next to the first layer. Each of the interlayer units includes a coupled oscillator array. The coupled oscillator array includes oscillators that oscillate at frequencies corresponding to differences between elements of the input vector of the first layer and elements of a row vector that is one row of the learning weight matrix, and combines oscillated signals generated by the oscillators to obtain a calculated signal.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: October 15, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kiwamu Kudo
  • Patent number: 10424325
    Abstract: According to one embodiment, a magnetic head includes a first magnetic layer, a second magnetic layer, an intermediate layer, a magnetic pole, a first terminal, and a second terminal. The second magnetic layer is separated from the first magnetic layer in a first direction. The intermediate layer is provided between the first magnetic layer and the second magnetic layer. A second direction from the first magnetic layer toward the magnetic pole crosses the first direction. The first terminal is electrically connected to the intermediate layer. The second terminal is electrically connected to the second magnetic layer.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: September 24, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirofumi Suto, Kiwamu Kudo, Tazumi Nagasawa, Taro Kanao, Rie Sato, Koichi Mizushima
  • Publication number: 20190200912
    Abstract: A biological function measurement and analysis system, a biological function measurement and analysis method, and a recording medium storing program code causing a computer to execute the biological function measurement and analysis method. The biological function measurement and analysis system includes an input acceptance unit configured to accept selection of a biological function to be measured, and a measurement and analysis procedure determining unit configured to access a memory in which measurement and analysis procedure data, indicating a combination of measurement and analysis of reaction of a live subject caused by stimulation on a biological-function-by-biological-function basis, is stored to specify measurement and analysis procedure data corresponding to the selected biological function.
    Type: Application
    Filed: October 3, 2018
    Publication date: July 4, 2019
    Inventors: Hirofumi MORISE, Kiwamu KUDO, Yoshihiro MISAKA, Eiichi OKUMURA, Tomoya KIMURA, Yasuyuki KAWABUCHI
  • Patent number: 10230330
    Abstract: According to one embodiment, an oscillator includes first to third conductive bodies, a first stacked unit, and a magnetic unit. The first conductive body includes first, second region, and third regions. The second conductive body includes a portion separated from the third region. The first stacked unit is provided between the third region and the portion. The first stacked unit includes first to fourth magnetic layers, and first to third intermediate layers. At least a portion of the magnetic unit and at least a portion of the first stacked unit overlap each other. In a first state, the first to fourth magnetizations are aligned with a third direction perpendicular to the first direction and the second direction. The second magnetization has a component in a reverse orientation of the first magnetization. The fourth magnetization has a component in a reverse orientation of the third magnetization.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: March 12, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kiwamu Kudo
  • Patent number: 10127931
    Abstract: According to one embodiment, a magnetic recording and reproducing device includes a magnetic recording medium, a magnetic head, and a controller. The controller implements a first operation and a second operation. The first operation is implemented in a first information recording interval including a first recording interval and a first non-recording interval. The second operation is implemented in a second information recording interval including a second recording interval and a second non-recording interval. The first operation includes in the first recording interval, generating a first signal magnetic field from the magnetic head, and in the first non-recording interval, generating a first non-signal magnetic field from the magnetic head. The second operation includes in the second recording interval, generating a second signal magnetic field from the magnetic head, and in the second non-recording interval, generating a second non-signal magnetic field from the magnetic head.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: November 13, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hirofumi Suto, Kiwamu Kudo, Tazumi Nagasawa, Taro Kanao, Rie Sato, Koichi Mizushima
  • Publication number: 20180267087
    Abstract: According to one embodiment, a microwave sensor includes a first stacked body and a first controller. The first stacked body includes a first magnetic layer, a second magnetic layer, and a first nonmagnetic layer. The first nonmagnetic layer is provided between the first magnetic layer and the second magnetic layer. The first controller is electrically connected to the first magnetic layer and the second magnetic layer. The first controller is configured to supply a current to the first stacked body and is configured to sense a value corresponding to a first electrical resistance between the first magnetic layer and the second magnetic layer. A second magnetization of the second magnetic layer is aligned with a first direction from the first magnetic layer toward the second magnetic layer. The value corresponding to the first electrical resistance changes according to a microwave.
    Type: Application
    Filed: September 15, 2017
    Publication date: September 20, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tazumi NAGASAWA, Hirofumi SUTO, Michinaga YAMAGISHI, Taro KANAO, Kiwamu KUDO, Koichi MIZUSHIMA
  • Publication number: 20180204589
    Abstract: According to one embodiment, a magnetic head includes a first magnetic layer, a second magnetic layer, an intermediate layer, a magnetic pole, a first terminal, and a second terminal. The second magnetic layer is separated from the first magnetic layer in a first direction. The intermediate layer is provided between the first magnetic layer and the second magnetic layer. A second direction from the first magnetic layer toward the magnetic pole crosses the first direction. The first terminal is electrically connected to the intermediate layer. The second terminal is electrically connected to the second magnetic layer.
    Type: Application
    Filed: August 31, 2017
    Publication date: July 19, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hirofumi SUTO, Kiwamu KUDO, Tazumi NAGASAWA, Taro KANAO, Rie SATO, Koichi MIZUSHIMA
  • Patent number: 10027334
    Abstract: According to an embodiment, a computing apparatus includes spin torque oscillators, an interaction unit, a variable direct-current supply device, and a measuring unit. The interaction unit controls an interaction between the spin torque oscillators. The variable direct-current supply device supplies a current to induce oscillations of the spin torque oscillators. The measuring unit measures AC signals obtained from the spin torque oscillators.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 17, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Taro Kanao, Tazumi Nagasawa, Hayato Goto, Kiwamu Kudo, Hirofumi Suto, Michinaga Yamagishi, Koichi Mizushima, Rie Sato
  • Patent number: 9984723
    Abstract: A magnetic recording and reproducing apparatus for recording and reproducing bit information comprising a magnetic head having a spin torque oscillator configured to readout bit information which is recorded on a magnetic recording medium, a detector configured to detect amplitude of a first signal, the first signal which is to reproduce the bit information, and a controller configured to control the magnetic head so as to read the bit information recorded on the magnetic recording medium when the amplitude of the first signal detected by the detector is smaller than a predetermined value.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: May 29, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tazumi Nagasawa, Taro Kanao, Michinaga Yamagishi, Hirofumi Suto, Kiwamu Kudo, Rie Sato, Koichi Mizushima
  • Publication number: 20170331484
    Abstract: According to one embodiment, an oscillator includes first to third conductive bodies, a first stacked unit, and a magnetic unit. The first conductive body includes first, second region, and third regions. The second conductive body includes a portion separated from the third region. The first stacked unit is provided between the third region and the portion. The first stacked unit includes first to fourth magnetic layers, and first to third intermediate layers. At least a portion of the magnetic unit and at least a portion of the first stacked unit overlap each other. In a first state, the first to fourth magnetizations are aligned with a third direction perpendicular to the first direction and the second direction. The second magnetization has a component in a reverse orientation of the first magnetization. The fourth magnetization has a component in a reverse orientation of the third magnetization.
    Type: Application
    Filed: February 22, 2017
    Publication date: November 16, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Kiwamu KUDO
  • Publication number: 20170294207
    Abstract: A magnetic recording and reproducing apparatus for recording and reproducing bit information comprising a magnetic head having a spin torque oscillator configured to readout bit information which is recorded on a magnetic recording medium, a detector configured to detect amplitude of a first signal, the first signal which is to reproduce the bit information, and a controller configured to control the magnetic head so as to read the bit information recorded on the magnetic recording medium when the amplitude of the first signal detected by the detector is smaller than a predetermined value.
    Type: Application
    Filed: February 28, 2017
    Publication date: October 12, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tazumi NAGASAWA, Taro KANAO, Michinaga YAMAGISHI, Hirofumi SUTO, Kiwamu KUDO, Rie SATO, Koichi MIZUSHIMA
  • Publication number: 20170272087
    Abstract: According to an embodiment, a computing apparatus includes spin torque oscillators, an interaction unit, a variable direct-current supply device, and a measuring unit. The interaction unit controls an interaction between the spin torque oscillators. The variable direct-current supply device supplies a current to induce oscillations of the spin torque oscillators. The measuring unit measures AC signals obtained from the spin torque oscillators.
    Type: Application
    Filed: September 9, 2016
    Publication date: September 21, 2017
    Inventors: Taro KANAO, Tazumi NAGASAWA, Hayato GOTO, Kiwamu KUDO, Hirofumi SUTO, Michinaga YAMAGISHI, Koichi MIZUSHIMA, Rie SATO
  • Publication number: 20170256273
    Abstract: According to one embodiment, a magnetic recording and reproducing device includes a magnetic recording medium, a magnetic head, and a controller. The controller implements a first operation and a second operation. The first operation is implemented in a first information recording interval including a first recording interval and a first non-recording interval. The second operation is implemented in a second information recording interval including a second recording interval and a second non-recording interval. The first operation includes in the first recording interval, generating a first signal magnetic field from the magnetic head, and in the first non-recording interval, generating a first non-signal magnetic field from the magnetic head. The second operation includes in the second recording interval, generating a second signal magnetic field from the magnetic head, and in the second non-recording interval, generating a second non-signal magnetic field from the magnetic head.
    Type: Application
    Filed: September 15, 2016
    Publication date: September 7, 2017
    Inventors: Hirofumi SUTO, Kiwamu KUDO, Koichi MIZUSHIMA, Tazumi NAGASAWA, Taro KANAO, Rie SATO
  • Patent number: 9704552
    Abstract: According to one embodiment, a magnetic recording apparatus includes a spin-torque oscillator, a recording unit, and a controller. The spin-torque oscillator includes an oscillation layer. The recording unit includes at least one recording layer. Magnetization reversal in each recording layer is performed by excitation of cooperative dynamics between magnetization of the oscillation layer and magnetization of the recording layer. The controller controls precession of the magnetization of the oscillation layer, which is induced by application of an electric current to the spin-torque oscillator.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: July 11, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiwamu Kudo, Tazumi Nagasawa, Hirofumi Suto, Koichi Mizushima, Rie Sato
  • Publication number: 20170061999
    Abstract: According to one embodiment, a magnetic recording medium includes a first magnetic layer and a second magnetic layer. An easy magnetization axis of the first magnetic layer is aligned with a first direction. The first direction is from the first magnetic layer toward the second magnetic layer. The second magnetic layer has magnetic anisotropy in a plane perpendicular to the first direction. A second magnetization of the second magnetic layer is reverse orientation of a first magnetization of the first magnetic layer.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Inventors: Hirofumi SUTO, Kiwamu Kudo, Tazumi Nagasawa, Taro Kanao, Rie Sato, Koichi Mizushima