Patents by Inventor Takuro Tajima
Takuro Tajima 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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Publication number: 20240102943Abstract: A dielectric spectroscopy measuring device includes a signal generation unit that generates electromagnetic waves, a signal separation unit that separate the electromagnetic waves according to a transmission direction and outputs the separated electromagnetic waves to an output destination corresponding to the transmission direction, a changeover switch unit that receives the electromagnetic waves generated by the signal generation unit via the signal separation unit, switches an output destination, and outputs the received electromagnetic waves, and outputs electromagnetic waves returning from the output destination to the signal separation unit, a sensor unit that irradiates a measurement target with the electromagnetic waves output by the changeover switch unit, and outputs measurement target waves obtained by irradiation to the changeover switch unit, a calibration standard unit including a circuit for calibration standard, the circuit outputting reflected waves for calibration generated by receiving theType: ApplicationFiled: February 5, 2021Publication date: March 28, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Masahito NAKAMURA, Takuro TAJIMA, Michiko SEYAMA
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Publication number: 20240024614Abstract: An awakening induction system includes a core temperature measuring unit that measures a core temperature of a user; an awakening time estimation unit that estimates an awakening time of the user on the day before a scheduled date of awakening induction; a recommended wake-up time presentation unit that determines a recommended wake-up time range of the scheduled date based on the awakening time to present the wake-up time range to the user; a wake-up time setting unit that sets a scheduled wake-up time of the scheduled date according to an instruction from the user; and a control unit that instructs the environmental control device to raise an environment temperature around the user when it is a predetermined time before the scheduled wake-up time of the scheduled date, and also instructs the environmental control device to irradiate the user with light when the scheduled wake-up time of the scheduled date is reached.Type: ApplicationFiled: September 2, 2020Publication date: January 25, 2024Inventors: Daichi Matsunaga, Yujiro Tanaka, Takuro Tajima, Michiko Seyama
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Patent number: 11839468Abstract: A component concentration measuring apparatus includes: a dielectric spectroscopy portion that irradiates a measurement subject with electromagnetic waves and measures a complex permittivity, thereby acquiring a dielectric spectroscopy spectrum; a temperature measurement portion that measures a temperature of the measurement subject; a signal processing portion that corrects the dielectric spectroscopy spectrum according to the temperature measured by the temperature measurement portion; and a calculating portion that applies a calibration model generated in advance from a dielectric spectroscopy spectrum of a sample whose component concentration is known, to the dielectric spectroscopy spectrum corrected by the signal processing portion, thereby calculating a component concentration of the measurement subject.Type: GrantFiled: April 11, 2019Date of Patent: December 12, 2023Assignee: Nippon Telegraph and Telephone CorporationInventors: Masahito Nakamura, Takuro Tajima, Michiko Seyama
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Publication number: 20230277899Abstract: An exercise assistance system includes an arithmetic circuit, a core temperature sensor that measures a core temperature of a subject, a heart rate sensor that measures a heart rate of the subject, and a display device. The arithmetic circuit is configured to cause the display device to present actions to be taken by the subject, based on the core temperature of the subject measured by the core temperature sensor and the heart rate of the subject measured by the heart rate sensor.Type: ApplicationFiled: August 31, 2020Publication date: September 7, 2023Inventors: Yujiro Tanaka, Daichi Matsunaga, Takuro Tajima, Michiko Seyama
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Publication number: 20220390417Abstract: A light source that emits beam light, a beam shaping unit that shapes the beam light, and a pulse control unit that forms the beam light into pulse light are included. The light source emits beam light that has a wavelength that is to be absorbed by a measurement-target substance. The pulse control unit forms beam light that is emitted from the light source and with which a measurement-target part is irradiated, into pulse light that has a preset frequency and has a pulse width that is a reciprocal of twice the frequency. The beam shaping unit shapes the beam light so that a beam radius of the beam light that is emitted from the light source and with which the measurement-target part is to be irradiated is equal to a value obtained by dividing a speed of sound by ?×f, where f denotes the frequency.Type: ApplicationFiled: November 15, 2019Publication date: December 8, 2022Inventors: Yujiro Tanaka, Takuro Tajima
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Publication number: 20220276150Abstract: A photoacoustic probe includes a light source that emits light, an acoustic sensor that is arranged such that an axial direction is in parallel to a depth direction of an object to be measured and detects a sound produced from the object to be measured, a propagation member that propagates the light from the light source to the object to be measured, and propagates the sound produced from the object to be measured by emission of the light from the light source to the acoustic sensor, a reflection member that is provided within the propagation member, reflects the light from the light source, and emits reflected light to the object to be measured in the axial direction of the acoustic sensor, and a sweep mechanism capable of changing a position at which the light from the light source enters the reflection member.Type: ApplicationFiled: September 11, 2019Publication date: September 1, 2022Applicants: Nippon Telegraph and Telephone Corporation, Nippon Telegraph and Telephone CorporationInventors: Yujiro Tanaka, Takuro Tajima
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Patent number: 11428672Abstract: A component concentration measurement device includes a light irradiation unit that performs intensity modulation where two lights of wavelengths different from each other are intensity-modulated by signals of a same frequency and a same phase, and a measurement object is irradiated, a detecting unit that detects a photoacoustic wave generated within the measurement object due to irradiation by the light irradiation unit, and converts the detected photoacoustic wave into a first electric signal, and a processing unit that obtains a concentration of a target component contained in the measurement object, on the basis of an amplitude and a phase of the first electric signal. Light absorption coefficients of the two lights, corresponding to a background component contained in the measurement object, are equal in change amount with regard to change in temperature, and have signs different from each other.Type: GrantFiled: February 25, 2019Date of Patent: August 30, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yujiro Tanaka, Takuro Tajima
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Patent number: 11076793Abstract: There is provided a respiration estimation apparatus.Type: GrantFiled: November 4, 2016Date of Patent: August 3, 2021Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takayuki Ogasawara, Takuro Tajima, Kei Kuwabara, Nobuaki Matsuura, Ryoichi Kasahara
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Publication number: 20210177310Abstract: A component concentration measuring apparatus includes: a dielectric spectroscopy portion that irradiates a measurement subject with electromagnetic waves and measures a complex permittivity, thereby acquiring a dielectric spectroscopy spectrum; a temperature measurement portion that measures a temperature of the measurement subject; a signal processing portion that corrects the dielectric spectroscopy spectrum according to the temperature measured by the temperature measurement portion; and a calculating portion that applies a calibration model generated in advance from a dielectric spectroscopy spectrum of a sample whose component concentration is known, to the dielectric spectroscopy spectrum corrected by the signal processing portion, thereby calculating a component concentration of the measurement subject.Type: ApplicationFiled: April 11, 2019Publication date: June 17, 2021Applicant: Nippon Telegraph and Telephone CorporationInventors: Masahito Nakamura, Takuro Tajima, Michiko Seyama
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Publication number: 20210161419Abstract: A component concentration measuring apparatus includes: a dielectric spectroscopy portion that irradiates a measurement subject with electromagnetic waves, thereby acquiring a complex permittivity spectrum; a signal processing portion that standardizes an imaginary part or an imaginary part spectrum of a complex permittivity at a frequency other than a frequency of an isosbestic point of the measurement subject, using an imaginary part of a complex permittivity at the frequency of the isosbestic point, out of the complex permittivity spectrum; and a calculating portion that applies a calibration model generated in advance from an imaginary part or an imaginary part spectrum of a complex permittivity of a sample whose component concentration is known, to the imaginary part or the imaginary part spectrum of the complex permittivity standardized by the signal processing portion, thereby calculating a component concentration of the measurement subject.Type: ApplicationFiled: April 12, 2019Publication date: June 3, 2021Inventors: Masahito Nakamura, Takuro Tajima, Michiko Seyama
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Publication number: 20210088478Abstract: A component concentration measurement device includes a light irradiation unit that performs intensity modulation where two lights of wavelengths different from each other are intensity-modulated by signals of a same frequency and a same phase, and a measurement object is irradiated, a detecting unit that detects a photoacoustic wave generated within the measurement object due to irradiation by the light irradiation unit, and converts the detected photoacoustic wave into a first electric signal, and a processing unit that obtains a concentration of a target component contained in the measurement object, on the basis of an amplitude and a phase of the first electric signal. Light absorption coefficients of the two lights, corresponding to a background component contained in the measurement object, are equal in change amount with regard to change in temperature, and have signs different from each other.Type: ApplicationFiled: February 25, 2019Publication date: March 25, 2021Inventors: Yujiro Tanaka, Takuro Tajima
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Publication number: 20180333064Abstract: There is provided a respiration estimation apparatus.Type: ApplicationFiled: November 4, 2016Publication date: November 22, 2018Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takayuki OGASAWARA, Takuro TAJIMA, Kei KUWABARA, Nobuaki MATSUURA, Ryoichi KASAHARA
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Patent number: 9198580Abstract: An object of the present invention is to provide a noninvasive constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method, in which accurate measurement can be performed by superimposing two photoacoustic signals having the same frequency and reverse phases to nullify the effect from the other constituent occupying large part of the object to be measured. The constituent concentration measuring apparatus according to the invention includes light generating means for generating two light beams having different wavelengths, modulation means for electrically intensity-modulating each of the two light beams having different wavelengths using signals having the same frequency and reverse phases, light outgoing means for outputting the two intensity-modulated light beams having different wavelengths toward a test subject, and acoustic wave detection means for detecting an acoustic wave generated in the test subject by the outputted light.Type: GrantFiled: November 5, 2012Date of Patent: December 1, 2015Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kazunori Naganuma, Takuro Tajima, Yuichi Okabe, Shoichi Sudo
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Patent number: 9060691Abstract: An object of the present invention is to provide a noninvasive constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method, in which accurate measurement can be performed by superimposing two photoacoustic signals having the same frequency and reverse phases to nullify the effect from the other constituent occupying large part of the object to be measured. The constituent concentration measuring apparatus according to the invention includes light generating means for generating two light beams having different wavelengths, modulation means for electrically intensity-modulating each of the two light beams having different wavelengths using signals having the same frequency and reverse phases, light outgoing means for outputting the two intensity-modulated light beams having different wavelengths toward a test subject, and acoustic wave detection means for detecting an acoustic wave generated in the test subject by the outputted light.Type: GrantFiled: November 5, 2012Date of Patent: June 23, 2015Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kazunori Naganuma, Takuro Tajima, Yuichi Okabe, Shoichi Sudo
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Patent number: 9008742Abstract: An object of the present invention is to provide a noninvasive constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method, in which accurate measurement can be performed by superimposing two photoacoustic signals having the same frequency and reverse phases to nullify the effect from the other constituent occupying large part of the object to be measured. The constituent concentration measuring apparatus according to the invention includes light generating means for generating two light beams having different wavelengths, modulation means for electrically intensity-modulating each of the two light beams having different wavelengths using signals having the same frequency and reverse phases, light outgoing means for outputting the two intensity-modulated light beams having different wavelengths toward a test subject, and acoustic wave detection means for detecting an acoustic wave generated in the test subject by the outputted light.Type: GrantFiled: November 5, 2012Date of Patent: April 14, 2015Assignee: Nippon Telegraph and Telephone CorporationInventors: Kazunori Naganuma, Takuro Tajima, Yuichi Okabe, Shoichi Sudo
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Patent number: 8332006Abstract: An object of the present invention is to provide a noninvasive constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method, in which accurate measurement can be performed by superimposing two photoacoustic signals having the same frequency and reverse phases to nullify the effect from the other constituent occupying large part of the object to be measured. The constituent concentration measuring apparatus according to the invention includes light generating means for generating two light beams having different wavelengths, modulation means for electrically intensity-modulating each of the two light beams having different wavelengths using signals having the same frequency and reverse phases, light outgoing means for outputting the two intensity-modulated light beams having different wavelengths toward a test subject, and acoustic wave detection means for detecting an acoustic wave generated in the test subject by the outputted light.Type: GrantFiled: May 2, 2005Date of Patent: December 11, 2012Assignee: Nippon Telegraph and Telephone CorporationInventors: Kazunori Naganuma, Takuro Tajima, Yuichi Okabe, Shoichi Sudo
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Publication number: 20070197886Abstract: An object of the present invention is to provide a noninvasive constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method, in which accurate measurement can be performed by superimposing two photoacoustic signals having the same frequency and reverse phases to nullify the effect from the other constituent occupying large part of the object to be measured. The constituent concentration measuring apparatus according to the invention includes light generating means for generating two light beams having different wavelengths, modulation means for electrically intensity-modulating each of the two light beams having different wavelengths using signals having the same frequency and reverse phases, light outgoing means for outputting the two intensity-modulated light beams having different wavelengths toward a test subject, and acoustic wave detection means for detecting an acoustic wave generated in the test subject by the outputted light.Type: ApplicationFiled: May 2, 2005Publication date: August 23, 2007Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kazunori Naganuma, Takuro Tajima, Yuichi Okabe, Shoichi Sudo