Patents by Inventor Yoichiro Takahashi

Yoichiro Takahashi 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: 11443717
    Abstract: A biometric information display device includes a display controller configured to display a morphological image indicative of a morphology of a subject, on a display, an input controller configured to receive a designation of a specified position on the morphological image, a pathway generating section configured to generate a pathway based on the specified position on the morphological image, and a current extracting section configured to extract current components at a plurality of positions along the pathway, based on current information reconstructed based on magnetic field measurement data generated by the subject. The display controller displays the current components extracted along the pathway on the display.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: September 13, 2022
    Assignees: Ricoh Company, Ltd., National University Corporation Tokyo Medical and Dental University
    Inventors: Yoichiro Takahashi, Taishi Watanabe, Shigenori Kawabata
  • Publication number: 20210158780
    Abstract: A biometric information display device includes a display controller configured to display a morphological image indicative of a morphology of a subject, on a display, an input controller configured to receive a designation of a specified position on the morphological image, a pathway generating section configured to generate a pathway based on the specified position on the morphological image, and a current extracting section configured to extract current components at a plurality of positions along the pathway, based on current information reconstructed based on magnetic field measurement data generated by the subject. The display controller displays the current components extracted along the pathway on the display.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Applicants: Ricoh Company, Ltd., National University Corporation Tokyo Medical and Dental University
    Inventors: Yoichiro TAKAHASHI, Taishi WATANABE, Shigenori KAWABATA
  • Patent number: 10768095
    Abstract: An optical sensor includes a light emitter configured to irradiate a surface of an object with a plurality of non-parallel light beams, a light detector configured to detect a plurality of light beams that have been reflected within the object and have returned to the surface from a plurality of directions, a recording unit configured to store pre-calculated results of a plurality of models having different optical properties and physical structures, and a calculating unit configured to calculate a light amount ratio of the plurality of reflected light beams, and estimate an optical property of the object based on the calculated light amount ratio and the pre-calculated results.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: September 8, 2020
    Assignees: Ricoh Company, Ltd, ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONAL
    Inventors: Yoichiro Takahashi, Takeaki Shimokawa, Toshihiro Ishii
  • Publication number: 20200064253
    Abstract: An optical sensor includes a light emitter configured to irradiate a surface of an object with a plurality of non-parallel light beams, a light detector configured to detect a plurality of light beams that have been reflected within the object and have returned to the surface from a plurality of directions, a recording unit configured to store pre-calculated results of a plurality of models having different optical properties and physical structures, and a calculating unit configured to calculate a light amount ratio of the plurality of reflected light beams, and estimate an optical property of the object based on the calculated light amount ratio and the pre-calculated results.
    Type: Application
    Filed: July 9, 2019
    Publication date: February 27, 2020
    Applicants: Ricoh Company, Ltd., ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONAL
    Inventors: Yoichiro TAKAHASHI, Takeaki SHIMOKAWA, Toshihiro ISHII
  • Patent number: 10539195
    Abstract: An engine clutch device includes first and second alternately stacked frictional power transmitting members and a clutch pressure member for axially bringing the frictional power transmitting members into pressure contact. The clutch device includes an oil supply portion adjacent to a distal end of power transmission shaft. The clutch device has an oil supply structure including a clutch lifter member with a flange portion axially facing the distal end of power transmission shaft, to axially shift the clutch pressure member to release the pressure contact of the frictional power transmitting members. The flange portion has a bowl-shaped portion extending axially to surround the one end portion of the power transmission shaft. The bowl-shaped portion including the flange portion functions to guide oil axially inward along the power transmission shaft and serves to provide an improved oil supply effect to the frictional power transmitting members.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: January 21, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Akira Tokito, Toshitaka Akita, Yoichiro Takahashi, Taichi Honda, Hitoshi Saito
  • Patent number: 10292590
    Abstract: A method of performing an optical examination on a test object and an optical examination device. The method includes obtaining a first detection light quantity distribution that is a detection light quantity distribution obtained for each of a plurality of optical models that simulate the test object, obtaining, using the optical sensor, a second detection light quantity distribution that is a distribution of an amount of light detected on the test object, and selecting based on the first light quantity distribution and the second detection light quantity distribution, an optical model suited to the test object from the plurality of optical models. The optical examination device includes an optical sensor, and a control system to control the irradiation system to obtain an amount of light detected by the detection system.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: May 21, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshihiro Ishii, Yoichiro Takahashi, Toshihide Sasaki, Masayuki Fujiwara
  • Patent number: 10175169
    Abstract: An optical sensor is provided. The optical sensor has an emitting system including at least one light emitting device which emits light onto an object; and a detecting system detecting the light which has been emitted by the emitting system and which has propagated through the object. The light emitting device is capable of emitting a plurality of light beams with different wavelengths onto substantially the same position of the object.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 8, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshihiro Ishii, Yoichiro Takahashi
  • Patent number: 10177530
    Abstract: An optical sensor, an optical examination device, and a method of detecting optical properties. The optical sensor includes an irradiation system including light irradiator to irradiate a test object with light, and a detection system to detect the light that is emitted from the irradiation system to the test object and has propagated through the test object. The light irradiator includes a multilayered structure having an active layer, and the multilayered structure includes a surface-emitting laser element and a photo-sensing element optically connected to the surface-emitting laser element. The optical examination device includes the optical sensor, and a controller to calculate optical properties of the test object based on a detection result of the optical sensor. The method includes performing optical simulation to obtain a detection light quantity distribution for an optical model and performing inverse problem estimation.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: January 8, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshihiro Ishii, Yoichiro Takahashi, Sunao Chubachi, Masayuki Fujiwara, Toshihide Sasaki, Kazuhiko Adachi
  • Patent number: 10067056
    Abstract: An optical sensor including an irradiation system including at least one light irradiator, the at least one irradiator including a surface emitting laser array having a plurality of light-emitting units, and a lens disposed in an optical path of the plurality of rays of light emitted from the plurality of light-emitting units to cause light exit directions of at least two of the plurality of light-emitting units to be not parallel to each other, such that the at least one irradiator irradiates a same point of a test object with a plurality of rays of light that are not parallel to each other. The optical sensor also including a detection system configured to detect the plurality of rays of light that are emitted from the irradiation system and propagated inside the test object.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: September 4, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Fujiwara, Toshihiro Ishii, Yoichiro Takahashi, Toshihide Sasaki
  • Patent number: 10039452
    Abstract: An optical sensor includes an irradiation system including at least one light irradiator to irradiate light onto an object under test; and a detection system detecting the light that is irradiated from the irradiation system and is propagated in the object under test. Further, the light irradiator irradiates non-parallel plural light beams on a same position of the object under test.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: August 7, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshihiro Ishii, Yoichiro Takahashi, Satoru Sugawara, Takeaki Shimokawa, Okito Yamashita, Masaaki Sato
  • Publication number: 20180180113
    Abstract: An engine clutch device includes first and second alternately stacked frictional power transmitting members and a clutch pressure member for axially bringing the frictional power transmitting members into pressure contact. The clutch device includes an oil supply portion adjacent to a distal end of power transmission shaft. The clutch device has an oil supply structure including a clutch lifter member with a flange portion axially facing the distal end of power transmission shaft, to axially shift the clutch pressure member to release the pressure contact of the frictional power transmitting members. The flange portion has a bowl-shaped portion extending axially to surround the one end portion of the power transmission shaft. The bowl-shaped portion including the flange portion functions to guide oil axially inward along the power transmission shaft and serves to provide an improved oil supply effect to the frictional power transmitting members.
    Type: Application
    Filed: December 21, 2017
    Publication date: June 28, 2018
    Inventors: Akira Tokito, Toshitaka Akita, Yoichiro Takahashi, Taichi Honda, Hitoshi Saito
  • Publication number: 20180011015
    Abstract: An optical sensor is provided. The optical sensor has an emitting system including at least one light emitting device which emits light onto an object; and a detecting system detecting the light which has been emitted by the emitting system and which has propagated through the object. The light emitting device is capable of emitting a plurality of light beams with different wavelengths onto substantially the same position of the object.
    Type: Application
    Filed: October 29, 2015
    Publication date: January 11, 2018
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshihiro ISHII, Yoichiro TAKAHASHI
  • Publication number: 20170179682
    Abstract: An optical sensor, an optical examination device, and a method of detecting optical properties. The optical sensor includes an irradiation system including light irradiator to irradiate a test object with light, and a detection system to detect the light that is emitted from the irradiation system to the test object and has propagated through the test object. The light irradiator includes a multilayered structure having an active layer, and the multilayered structure includes a surface-emitting laser element and a photo-sensing element optically connected to the surface-emitting laser element. The optical examination device includes the optical sensor, and a controller to calculate optical properties of the test object based on a detection result of the optical sensor. The method includes performing optical simulation to obtain a detection light quantity distribution for an optical model and performing inverse problem estimation.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 22, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshihiro ISHII, Yoichiro TAKAHASHI, Sunao CHUBACHI, Masayuki FUJIWARA, Toshihide SASAKI, Kazuhiko ADACHI
  • Publication number: 20160360966
    Abstract: A method of performing an optical examination on a test object and an optical examination device. The method includes obtaining a first detection light quantity distribution that is a detection light quantity distribution obtained for each of a plurality of optical models that simulate the test object, obtaining, using the optical sensor, a second detection light quantity distribution that is a distribution of an amount of light detected on the test object, and selecting based on the first light quantity distribution and the second detection light quantity distribution, an optical model suited to the test object from the plurality of optical models. The optical examination device includes an optical sensor, and a control system to control the irradiation system to obtain an amount of light detected by the detection system.
    Type: Application
    Filed: June 13, 2016
    Publication date: December 15, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshihiro ISHII, Yoichiro TAKAHASHI, Toshihide SASAKI, Masayuki FUJIWARA
  • Publication number: 20160242647
    Abstract: An optical sensor includes an irradiation system including at least one light irradiator to irradiate light onto an object under test; and a detection system detecting the light that is irradiated from the irradiation system and is propagated in the object under test. Further, the light irradiator irradiates non-parallel plural light beams on a same position of the object under test.
    Type: Application
    Filed: September 26, 2014
    Publication date: August 25, 2016
    Applicants: RICOH COMPANY, LTD., ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONAL
    Inventors: Toshihiro ISHII, Yoichiro TAKAHASHI, Satoru SUGAWARA, Takeaki SHIMOKAWA, Okito YAMASHITA, Masaaki SATO
  • Publication number: 20160195473
    Abstract: An optical sensor including an irradiation system including at least one light irradiator, the at least one irradiator including a surface emitting laser array having a plurality of light-emitting units, and a lens disposed in an optical path of the plurality of rays of light emitted from the plurality of light-emitting units to cause light exit directions of at least two of the plurality of light-emitting units to be not parallel to each other, such that the at least one irradiator irradiates a same point of a test object with a plurality of rays of light that are not parallel to each other. The optical sensor also including a detection system configured to detect the plurality of rays of light that are emitted from the irradiation system and propagated inside the test object.
    Type: Application
    Filed: December 29, 2015
    Publication date: July 7, 2016
    Inventors: Masayuki FUJIWARA, Toshihiro ISHII, Yoichiro TAKAHASHI, Toshihide SASAKI
  • Patent number: 7201038
    Abstract: A knock sensor is constructed by putting and fitting components including an annular piezoelectric element, terminal plate, insulating sheet and weight onto a base consisting of a flange portion and a tubular portion, forming a groove part on a tip outer circumferential surface of the tubular portion, fitting a stopper ring functioning to apply an axial preload to the components onto the tubular portion, and caulking fixedly the stopper ring and the tubular portion into the groove part.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: April 10, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masao Kohashi, Akito Yokoi, Yoichiro Takahashi, Yoshiyuki Sawada
  • Publication number: 20060081034
    Abstract: A knock sensor is constructed by putting and fitting components including an annular piezoelectric element, terminal plate, insulating sheet and weight onto a base consisting of a flange portion and a tubular portion, forming a groove part on a tip outer circumferential surface of the tubular portion, fitting a stopper ring functioning to apply an axial preload to the components onto the tubular portion, and caulking fixedly the stopper ring and the tubular portion into the groove part.
    Type: Application
    Filed: April 5, 2005
    Publication date: April 20, 2006
    Inventors: Masao Kohashi, Akito Yokoi, Yoichiro Takahashi, Yoshiyuki Sawada