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).
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Patent number: 11443717Abstract: 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: GrantFiled: November 20, 2020Date of Patent: September 13, 2022Assignees: Ricoh Company, Ltd., National University Corporation Tokyo Medical and Dental UniversityInventors: Yoichiro Takahashi, Taishi Watanabe, Shigenori Kawabata
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Publication number: 20210158780Abstract: 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: ApplicationFiled: November 20, 2020Publication date: May 27, 2021Applicants: Ricoh Company, Ltd., National University Corporation Tokyo Medical and Dental UniversityInventors: Yoichiro TAKAHASHI, Taishi WATANABE, Shigenori KAWABATA
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Patent number: 10768095Abstract: 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: GrantFiled: July 9, 2019Date of Patent: September 8, 2020Assignees: Ricoh Company, Ltd, ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONALInventors: Yoichiro Takahashi, Takeaki Shimokawa, Toshihiro Ishii
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Publication number: 20200064253Abstract: 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: ApplicationFiled: July 9, 2019Publication date: February 27, 2020Applicants: Ricoh Company, Ltd., ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONALInventors: Yoichiro TAKAHASHI, Takeaki SHIMOKAWA, Toshihiro ISHII
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Patent number: 10539195Abstract: 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: GrantFiled: December 21, 2017Date of Patent: January 21, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Akira Tokito, Toshitaka Akita, Yoichiro Takahashi, Taichi Honda, Hitoshi Saito
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Patent number: 10292590Abstract: 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: GrantFiled: June 13, 2016Date of Patent: May 21, 2019Assignee: RICOH COMPANY, LTD.Inventors: Toshihiro Ishii, Yoichiro Takahashi, Toshihide Sasaki, Masayuki Fujiwara
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Patent number: 10175169Abstract: 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: GrantFiled: October 29, 2015Date of Patent: January 8, 2019Assignee: RICOH COMPANY, LTD.Inventors: Toshihiro Ishii, Yoichiro Takahashi
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Patent number: 10177530Abstract: 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: GrantFiled: December 15, 2016Date of Patent: January 8, 2019Assignee: RICOH COMPANY, LTD.Inventors: Toshihiro Ishii, Yoichiro Takahashi, Sunao Chubachi, Masayuki Fujiwara, Toshihide Sasaki, Kazuhiko Adachi
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Patent number: 10067056Abstract: 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: GrantFiled: December 29, 2015Date of Patent: September 4, 2018Assignee: Ricoh Company, Ltd.Inventors: Masayuki Fujiwara, Toshihiro Ishii, Yoichiro Takahashi, Toshihide Sasaki
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Patent number: 10039452Abstract: 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: GrantFiled: September 26, 2014Date of Patent: August 7, 2018Assignee: RICOH COMPANY, LTD.Inventors: Toshihiro Ishii, Yoichiro Takahashi, Satoru Sugawara, Takeaki Shimokawa, Okito Yamashita, Masaaki Sato
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Publication number: 20180180113Abstract: 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: ApplicationFiled: December 21, 2017Publication date: June 28, 2018Inventors: Akira Tokito, Toshitaka Akita, Yoichiro Takahashi, Taichi Honda, Hitoshi Saito
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Publication number: 20180011015Abstract: 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: ApplicationFiled: October 29, 2015Publication date: January 11, 2018Applicant: RICOH COMPANY, LTD.Inventors: Toshihiro ISHII, Yoichiro TAKAHASHI
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Publication number: 20170179682Abstract: 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: ApplicationFiled: December 15, 2016Publication date: June 22, 2017Applicant: RICOH COMPANY, LTD.Inventors: Toshihiro ISHII, Yoichiro TAKAHASHI, Sunao CHUBACHI, Masayuki FUJIWARA, Toshihide SASAKI, Kazuhiko ADACHI
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Publication number: 20160360966Abstract: 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: ApplicationFiled: June 13, 2016Publication date: December 15, 2016Applicant: Ricoh Company, Ltd.Inventors: Toshihiro ISHII, Yoichiro TAKAHASHI, Toshihide SASAKI, Masayuki FUJIWARA
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Publication number: 20160242647Abstract: 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: ApplicationFiled: September 26, 2014Publication date: August 25, 2016Applicants: RICOH COMPANY, LTD., ADVANCED TELECOMMUNICATIONS RESEARCH INSTITUTE INTERNATIONALInventors: Toshihiro ISHII, Yoichiro TAKAHASHI, Satoru SUGAWARA, Takeaki SHIMOKAWA, Okito YAMASHITA, Masaaki SATO
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Publication number: 20160195473Abstract: 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: ApplicationFiled: December 29, 2015Publication date: July 7, 2016Inventors: Masayuki FUJIWARA, Toshihiro ISHII, Yoichiro TAKAHASHI, Toshihide SASAKI
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Patent number: 7201038Abstract: 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: GrantFiled: April 5, 2005Date of Patent: April 10, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masao Kohashi, Akito Yokoi, Yoichiro Takahashi, Yoshiyuki Sawada
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Publication number: 20060081034Abstract: 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: ApplicationFiled: April 5, 2005Publication date: April 20, 2006Inventors: Masao Kohashi, Akito Yokoi, Yoichiro Takahashi, Yoshiyuki Sawada