Patents by Inventor Tatsuya Koike

Tatsuya Koike 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: 11496283
    Abstract: A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to select a wireless communication section from which a specific reception time corresponding to an optimum parameter that is a reliability parameter indicating that the specific reception time is most appropriate for a processing target is detected, as a transmission communication section serving as a wireless communication section that transmits a signal from among the plurality of wireless communication sections, and configured to measure a distance between the transmission communication section and the other communication device on the basis of the specific reception time detected from a correlation computation result obtained from signals transmitted/received between the other communication device and the selected transmission communication section.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: November 8, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki Oishi, Satoshi Mori, Kenichi Koga, Tatsuya Koike
  • Patent number: 11480645
    Abstract: A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to detect a specific element in chronological information based on respective pulse signals received by the plurality of wireless communication sections, on the basis of respective pieces of chronological information including, as elements related to time, information that chronologically changes and that is obtained when the plurality of wireless communication sections receive the respective pulse signals transmitted from the other communication device, verify whether each of a plurality of the detected specific elements is based on the pulse signal coming through a shortest path, and estimate an angle from which the pulse signal has come while using axes extending from reference point, on the basis of the plurality of specific elements that are verified as elements based on the pulse signals.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: October 25, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki Oishi, Satoshi Mori, Kenichi Koga, Tatsuya Koike
  • Patent number: 11441717
    Abstract: A resin tube fitting has a body with a sleeve allowing the longitudinal end of the tube to be put therein, an inner ring with a press-in portion configured to be pressed in the longitudinal end of the tube, and a union nut with a connector configured to be screwed to an outer periphery of the body to allow the longitudinal end of the tube to be put radially between the connector and the press-in portion. The inner ring and the union nut are made of resin, which has a property of contracting in response to change in ambient temperature. The radial contraction rate of the connector is higher by 0.05% or more than that of the press-in portion of the inner ring.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: September 13, 2022
    Assignee: NIPPON PILLAR PACKING CO., LTD.
    Inventors: Makoto Fujii, Masaki Miyamoto, Tatsuya Fujii, Toshihide Iida, Tomoyuki Koike, Shintaro Makihata
  • Publication number: 20220248173
    Abstract: To provide a novel and improved control device and storage medium capable of performing control based on a positional relation with higher accuracy. A control device includes a control unit configured to perform control based on a presence area of a second communication device estimated using signals transmitted and received between a first communication device and the second communication device. The control unit performs control based on a presence area estimated most often among a plurality of presence areas estimated from signals transmitted and received a plurality of times during a certain time length.
    Type: Application
    Filed: December 8, 2021
    Publication date: August 4, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Kenichi KOGA, Tatsuya KOIKE, Satoshi MORI, Kento KATAOKA
  • Publication number: 20220244339
    Abstract: To provide a novel and improved control device and storage medium capable of performing control based on a positional relation with higher accuracy. A control device includes a control unit configured to perform control based on a presence area of a first communication device determined using a signal transmitted and received between the first communication device and at least one second communication device. The control unit performs control related to an operation of a controlled device in accordance with a second presence area when a first presence area determined based on a coordinate position of the first communication device on an arbitrary coordinate system associating the first communication device with the second communication device is inconsistent with the second presence area determined based on a distance between the first and second communication devices.
    Type: Application
    Filed: December 8, 2021
    Publication date: August 4, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Kenichi KOGA, Tatsuya KOIKE, Satoshi MORI, Kento KATAOKA
  • Publication number: 20220239387
    Abstract: A communication device controls wireless communications dependent on radio propagation environments. The communication device includes a wireless communication section configured to receive wireless signals from another communication device, and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process. The measurement process includes reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals, wherein the reliability parameter includes a third reliability parameter serving as an indicator that indicates unsuitability of a combined wave for the first incoming wave.
    Type: Application
    Filed: April 19, 2022
    Publication date: July 28, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20220239385
    Abstract: A communication device controls wireless communication depending on radio propagation environments. The communication device includes a wireless communication section configured to receive wireless signals from another communication device, and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process. The measurement process including reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals, wherein the reliability parameter includes a fourth reliability parameter serving as an indicator that indicates suitability of a situation of receiving the wireless signal.
    Type: Application
    Filed: April 19, 2022
    Publication date: July 28, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20220239386
    Abstract: A communication device controls wireless communications depending on radio propagation environments. The communication device includes a wireless communication section configured to receive wireless signals from another communication device, and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process. The measurement process includes reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals, wherein the reliability parameter includes a first reliability parameter serving as an indicator that indicates whether the first incoming wave itself is an appropriate detection target.
    Type: Application
    Filed: April 19, 2022
    Publication date: July 28, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20220057472
    Abstract: A communication device comprising: a plurality of wireless communication sections; and a control section configured to control a repetition process of repeatedly performing a measurement process, on a basis of a reliability parameter calculated through the measurement process, and control a selection process of selecting a representative wireless communication section each time the measurement process is repeated in the repetition process, the measurement process including transmission of a signal from the representative wireless communication section, reception of the signal by the plurality of wireless communication sections, and calculation of the reliability parameter with regard to at least any of the wireless communication sections.
    Type: Application
    Filed: June 22, 2021
    Publication date: February 24, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
  • Publication number: 20220057502
    Abstract: A communication device comprising: a wireless communication section; and a control section configured to correlate a first signal with a second signal from another communication device at a designated interval, convert a data matrix including an array of a plurality of correlation computation results into a format including a matrix product of an expanded modal matrix and an expanded signal matrix, estimate the expanded signal matrix that minimizes a predetermined norm, and estimate reception time of the second signal on a basis of the expanded signal matrix that minimizes the predetermined norm.
    Type: Application
    Filed: August 6, 2021
    Publication date: February 24, 2022
    Applicants: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, NAGOYA INSTITUTE OF TECHNOLOGY
    Inventors: Yoshiki OISHI, Kenichi KOGA, Tatsuya KOIKE, Nobuyoshi KIKUMA
  • Publication number: 20220061019
    Abstract: A communication device comprising: a plurality of wireless communication sections; and a control section configured to repeatedly perform a measurement process including transmission of a signal from a representative wireless communication section, reception of the signal from another communication device by the plurality of wireless communication sections, and calculation of a reliability parameter with regard to at least any of the wireless communication sections, control a selection process of selecting the representative wireless communication section each time the measurement process is repeated, and control a positional parameter determination process on a basis of the reliability parameter, the positional parameter determination process being a process of determining a positional parameter indicating a position of the other communication device on a basis of a plurality of a first incoming waves obtained through repetition of the measurement process.
    Type: Application
    Filed: June 30, 2021
    Publication date: February 24, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
  • Patent number: 11240069
    Abstract: A communication device is configured to correlate a first signal with a second signal at a designated interval, the second signal corresponding to the first signal and being received by the communication device where the other communication device transmits a signal including a pulse as the first signal, convert a correlation computation result that is a result of correlating the first signal with the second signal at the designated interval into a format including a matrix product of an expanded modal matrix and an expanded signal vector, the expanded modal matrix including a plurality of elements indicating the correlation computation result obtained when assuming that the signals are received at respective set times, the expanded signal vector being a vector including a plurality of elements, each of which indicates whether or not there is a signal received at each of the set times and amplitude and phase of the signal.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: February 1, 2022
    Assignees: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, NAGOYA INSTITUTE OF TECHNOLOGY
    Inventors: Yoshiki Oishi, Kenichi Koga, Tatsuya Koike, Nobuyoshi Kikuma
  • Patent number: 11218185
    Abstract: A communication device includes: a wireless communication section configured to wirelessly receive a signal from another communication device; and a control section configured to, in the case where the other communication device transmits a first signal that includes one or more preamble symbols including one or more pulses, acquire a correlation computation result including a correlation value indicating magnitude of correlation between the first signal and a second signal corresponding to the first signal received by the wireless communication section, as an element obtained at each delay time that is time elapsed after the other communication device transmits the preamble symbol at a designated interval, detect a specific element that is a plurality of the elements included in the correlation computation result, in accordance with a predetermined standard, and calculate a reliability parameter that is an indicator indicating whether the detected specific element is appropriate for a processing target.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: January 4, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki Oishi, Satoshi Mori, Kenichi Koga, Tatsuya Koike
  • Publication number: 20210258140
    Abstract: A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to select a wireless communication section from which a specific reception time corresponding to an optimum parameter that is a reliability parameter indicating that the specific reception time is most appropriate for a processing target is detected, as a transmission communication section serving as a wireless communication section that transmits a signal from among the plurality of wireless communication sections, and configured to measure a distance between the transmission communication section and the other communication device on the basis of the specific reception time detected from a correlation computation result obtained from signals transmitted/received between the other communication device and the selected transmission communication section.
    Type: Application
    Filed: February 1, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
  • Publication number: 20210258041
    Abstract: A communication device includes: a wireless communication section configured to wirelessly receive a signal from another communication device; and a control section configured to, in the case where the other communication device transmits a first signal that includes one or more preamble symbols including one or more pulses, acquire a correlation computation result including a correlation value indicating magnitude of correlation between the first signal and a second signal corresponding to the first signal received by the wireless communication section, as an element obtained at each delay time that is time elapsed after the other communication device transmits the preamble symbol at a designated interval, detect a specific element that is a plurality of the elements included in the correlation computation result, in accordance with a predetermined standard, and calculate a reliability parameter that is an indicator indicating whether the detected specific element is appropriate for a processing target.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
  • Publication number: 20210258716
    Abstract: [Object] To provide a mechanism that makes it possible to control a process of determining a position in accordance with a radio propagation environment. [Solution] A communication device comprising: a wireless communication section configured to receive wireless signals from another communication device; and a control section configured to calculate a reliability parameter serving as an indicator that indicates whether a first incoming wave serving as a signal detected as a signal that meets a predetermined detection standard is an appropriate process target, among the wireless signals received by the wireless communication section, and control a positional parameter determination process of determining a positional parameter indicating a position of the other communication device on a basis of the first incoming wave, on a basis of the reliability parameter.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20210258042
    Abstract: A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to perform a detection process of detecting specific elements with regard to a plurality of correlation computation results, each of which is obtained by correlating a first signal that is transmitted from the other communication device and each of second signals at the designated interval and includes a correlation value indicating magnitude of correlation between the first signal and the second signal as an element obtained at the designated interval, and control a change process of treating a wireless communication section having earliest time corresponding to the specific element as a first wireless communication section among the plurality of wireless communication sections, treating the other wireless communication section as a second wireless communication section among the plurality of wireless co
    Type: Application
    Filed: January 20, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
  • Publication number: 20210258912
    Abstract: A communication device includes: a plurality of wireless communication sections, each configured to be capable of wirelessly transmitting and receiving a signal to and from another communication device; and a control section configured to detect a specific element with regard to each of a plurality of correlation computation results that are obtained by correlating a first signal that is transmitted from the other communication device and that includes change in amplitude with respective second signals obtained when the plurality of wireless communication sections receive the first signal, calculate a reliability parameter that is an indicator indicating whether the detected specific element is appropriate for a processing target, and control a positional parameter determination process on the basis of the reliability parameter, the positional parameter determination process being a process of estimating a positional parameter indicating a position of the other communication device on the basis of the detecte
    Type: Application
    Filed: January 28, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
  • Publication number: 20210255273
    Abstract: A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to detect a specific element in chronological information based on respective pulse signals received by the plurality of wireless communication sections, on the basis of respective pieces of chronological information including, as elements related to time, information that chronologically changes and that is obtained when the plurality of wireless communication sections receive the respective pulse signals transmitted from the other communication device, verify whether each of a plurality of the detected specific elements is based on the pulse signal coming through a shortest path, and estimate an angle from which the pulse signal has come while using axes extending from reference point, on the basis of the plurality of specific elements that are verified as elements based on the pulse signals.
    Type: Application
    Filed: January 20, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE
  • Publication number: 20210258085
    Abstract: [Object] To provide a mechanism that makes it possible to control wireless communication depending on radio propagation environments. [Solution] A communication device comprising: a wireless communication section configured to receive wireless signals from another communication device; and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process, the measurement process including reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI