Patents by Inventor Takeshi Akagawa
Takeshi Akagawa 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: 20240169285Abstract: A contribution degree estimation system includes: an information reception unit configured to receive project information including at least one of a type, a goal, budget, or outcomes of a project, task information including at least one of levels of difficulties or market values of a plurality of required tasks that are required to carry out the project, and member information including at least one of tasks, skills, roles, or knowledge of the respective members participating in the project; an estimation unit configured to estimate the contribution degrees of the respective members using a trained model that has performed learning so as to receive, as input, the project information, the task information, and the member information and output contribution degrees of the respective members in the project; and a presenting unit configured to cause a display device to present the estimated contribution degrees of the respective member.Type: ApplicationFiled: November 14, 2023Publication date: May 23, 2024Applicant: NEC CorporationInventors: Satoshi ODA, Takeshi Akagawa, Hideki Komori
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Patent number: 11660025Abstract: An identification device including a generation unit and an information identification unit. The generation unit generates factor information relating to pulse-wave information with respect to an identification target in accordance with biological model information representing a relevance between pulse-wave information representing a pulse wave and the factor information representing a factor of pulse wave. The information identification unit selects certain list information satisfying a predetermined determination criterion of the factor information generated by the generation unit out of list information associating the factor information generated based on the pulse-wave information representing a pulse wave of a biological subject to be an identification target with identification information for identifying the biological subject, and identifies the identification information in the selected certain list information.Type: GrantFiled: July 11, 2017Date of Patent: May 30, 2023Assignee: NEC CORPORATIONInventors: Tetsuri Ariyama, Terumi Umematsu, Yuji Ohno, Katsumi Abe, Mineto Satoh, Takeshi Akagawa, Masahiro Kubo, Tan Azuma, Kenichiro Fujiyama, Soichiro Araki
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Publication number: 20230080382Abstract: An object of the present disclosure is to provide an optical measurement method, an optical measurement apparatus, and a non-transitory computer readable medium capable of specifying the position of a pore. The optical measurement method includes first, second, and third steps. In the first step (ST11), first 3D tomographic image data is acquired from a skin by using optical coherence tomography. In the second step (ST12), a line shown in a second planar image (B2) at a second depth is removed from a first planar image (B1) at a first depth, the second depth being deeper than the first depth. In the third step (ST13), a position of a pore is specified from the first planar image (B1) from which the line has been removed.Type: ApplicationFiled: March 19, 2020Publication date: March 16, 2023Applicant: NEC CorporationInventor: Takeshi Akagawa
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Publication number: 20220341785Abstract: A spectrum measurement device of the present invention includes a spectroscope configured to output a first measurement result that is a result of measuring characteristics of light from an object to be measured, an optical monitor configured to output a second measurement result that is a result of measuring intensity of light from the object to be measured, and a control circuit configured to correct the first measurement result, based on the second measurement result and output a third measurement result, based on the corrected first measurement result.Type: ApplicationFiled: September 26, 2019Publication date: October 27, 2022Applicant: NEC CorporationInventor: Takeshi AKAGAWA
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Patent number: 11436871Abstract: A living body determination device includes: a light irradiation device that irradiates a measuring object with a first light including a plurality of spectrums; a spectroscopic device that disperses a light at intensity depending on a wavelength and outputs the light; an image acquisition device that receives the light output by the spectroscopic device and outputs image information representing brightness depending on the intensity of the light; and a control unit. The control unit, for each spectrum of the first light, acquires image information with respect to the measuring object from the image acquisition device, based on the image information, selects one or more areas, for each of the areas, acquires spectroscopic information, and based on whether the spectroscopic information satisfies a predetermined condition, determines whether the measuring object is a living body.Type: GrantFiled: April 24, 2020Date of Patent: September 6, 2022Assignee: NEC CORPORATIONInventors: Yuji Ohno, Masahiro Kubo, Katsumi Abe, Ersin Altintas, Takeshi Akagawa, Tetsuri Ariyama
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Patent number: 11380179Abstract: To provide a fire sensing system, fire sensing method, and program with which it is possible to identify the position of a fire using a low number of sensors A fire sensing system 1 provided with: gas sensors 11a, 11b, 11c for sensing a change in gas concentration at three locations P1, P2, P3; a gas propagation speed calculation unit 12 for sensing gas concentration increase times T1, T2, T3 at the three locations P1, P2, P3 and calculating the gas propagation speeds v1, v2, v3 at the three locations P1, P2, P3; and a fire information estimation unit 13 for estimating the position of the fire on the basis of the gas concentration increase times T1, T2, T3 and the gas propagation speeds v1, v2, v3.Type: GrantFiled: March 7, 2018Date of Patent: July 5, 2022Assignee: NEC CORPORATIONInventor: Takeshi Akagawa
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Patent number: 11298031Abstract: The purpose of the present invention is to provide a sphygmomanometer that has a high level of measurement accuracy and places a low burden upon a subject whose systolic pressure is being measured. To this end, the sphygmomanometer according to the present invention is characterized by comprising: a cuff pressure and pulse wave detecting unit that detects cuff pressure and pulse waves; and a blood pressure calculating unit that divides pulse waves detected by the cuff pressure and pulse wave detecting unit into a plurality of sections within a specific period, and calculates an estimated value for systolic pressure on the basis of fluctuations in the symmetry of the pulse wave waveform in the plurality of sections, said fluctuations occurring along with variations in the cuff pressure detected by the cuff pressure and pulse wave detecting unit.Type: GrantFiled: March 17, 2017Date of Patent: April 12, 2022Assignee: NEC CORPORATIONInventors: Tetsuri Ariyama, Masahiro Kubo, Katsumi Abe, Ersin Altintas, Yuji Ohno, Takeshi Akagawa
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Patent number: 11231272Abstract: Optical measuring apparatus includes: a light source irradiating an object to be measured; a splitter splitting transmitted light or reflected light from the object to be measured; a phase changer changing a phase of a first light which is one of the lights split; a phase fixer maintaining a phase of a second light which is the other light split; a multiplexer multiplexing lights output from the phase changer and the phase fixer; a detector detecting the light (interference image) output from the multiplexer; and a controller that extracts a reference point from the interference image, when a displacement of the reference point is detected, corrects a luminance value for each pixel of the interference images in accordance with a displacement of the object to be measured indicated by a displacement of the reference point, constructs an interferogram based on the luminance value for each pixel of the interference images after the correction.Type: GrantFiled: October 30, 2018Date of Patent: January 25, 2022Assignees: NEC CORPORATION, NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITYInventors: Takeshi Akagawa, Masahiro Kubo, Katsumi Abe, Ersin Altintas, Yuji Ohno, Tetsuri Ariyama, Ichiro Ishimaru
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Patent number: 11000219Abstract: An object of the present invention is to provide an electrocardiogram measurement apparatus capable of significantly reducing the number of electrodes and measuring even a faint signal. The present invention provides an electrocardiogram measurement apparatus including a first electrode and a second electrode to be brought into contact with a body surface near an artery, an electrocardiogram measurement means for measuring a signal obtained from the first electrode and the second electrode, an artery position measurement means for identifying a position at which a measured value of a measured signal is largest as a position of an artery; and a notification means for notifying a user of information indicating the position of an artery.Type: GrantFiled: September 20, 2016Date of Patent: May 11, 2021Assignee: NEC CORPORATIONInventors: Tetsuri Ariyama, Masahiro Kubo, Katsumi Abe, Ersin Altintas, Yuji Ohno, Takeshi Akagawa
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Publication number: 20210113097Abstract: This heart failure degree-of-exacerbation determination system comprises a storage device (11) and an arithmetic device (12). The arithmetic device (12) includes a heart failure degree-of-exacerbation determination means (121) for determining the degree-of-exacerbation of heart failure, on the basis of stored information which is stored in the storage device (11) and the correlation among a plurality of evaluation values which are associated with a acral portion of a patient.Type: ApplicationFiled: February 18, 2019Publication date: April 22, 2021Applicant: NEC CorporationInventors: Yuji OHNO, Masahiro KUBO, Katsumi ABE, Ersin ALTINTAS, Takeshi AKAGAWA, Tetsuri ARIYAMA, Hiroaki SHIMOKAWA, Yasuhiko SAKATA, Ryuji TUBURAYA
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Publication number: 20210056824Abstract: To provide a fire sensing system, fire sensing method, and program with which it is possible to identify the position of a fire using a low number of sensors. A fire sensing system 1 provided with: gas sensors 11a, 11b, 11c for sensing a change in gas concentration at three locations P1, P2, P3; a gas propagation speed calculation unit 12 for sensing gas concentration increase times T1, T2, T3 at the three locations P1, P2, P3 and calculating the gas propagation speeds v1, v2, v3 at the three locations P1, P2, P3; and a fire information estimation unit 13 for estimating the position of the fire on the basis of the gas concentration increase times T1, T2, T3 and the gas propagation speeds v1, v2, v3.Type: ApplicationFiled: March 7, 2018Publication date: February 25, 2021Applicant: NEC CorporationInventor: Takeshi AKAGAWA
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Publication number: 20200333128Abstract: Optical measuring apparatus includes: a light source irradiating an object to be measured; a splitter splitting transmitted light or reflected light from the object to be measured; a phase changer changing a phase of a first light which is one of the lights split; a phase fixer maintaining a phase of a second light which is the other light split; a multiplexer multiplexing lights output from the phase changer and the phase fixer; a detector detecting the light (interference image) output from the multiplexer; and a controller that extracts a reference point from the interference image, when a displacement of the reference point is detected, corrects a luminance value for each pixel of the interference images in accordance with a displacement of the object to be measured indicated by a displacement of the reference point, constructs an interferogram based on the luminance value for each pixel of the interference images after the correction.Type: ApplicationFiled: October 30, 2018Publication date: October 22, 2020Applicants: NEC CORPORATION, NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITYInventors: Takeshi AKAGAWA, Masahiro KUBO, Katsumi ABE, Ersin ALTINTAS, Yuji OHNO, Tetsuri ARIYAMA, Ichiro ISHIMARU
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Publication number: 20200288984Abstract: The purpose of the present invention is to provide a sphygmomanometer that has a high level of measurement accuracy and places a low burden upon a subject whose systolic pressure is being measured. To this end, the sphygmomanometer according to the present invention is characterized by comprising: a cuff pressure and pulse wave detecting unit that detects cuff pressure and pulse waves; and a blood pressure calculating unit that divides pulse waves detected by the cuff pressure and pulse wave detecting unit into a plurality of sections within a specific period, and calculates an estimated value for systolic pressure on the basis of fluctuations in the symmetry of the pulse wave waveform in the plurality of sections, said fluctuations occurring along with variations in the cuff pressure detected by the cuff pressure and pulse wave detecting unit.Type: ApplicationFiled: March 17, 2017Publication date: September 17, 2020Applicant: NEC CorporationInventors: Tetsuri ARIYAMA, Masahiro KUBO, Katsumi ABE, Ersin ALTINTAS, Yuji OHNO, Takeshi AKAGAWA
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Patent number: 10761017Abstract: A gas detection system, comprising: a humidity measuring apparatus that measures humidity; a transmitting apparatus that includes a light source which emits an optical signal of a plurality of wavelengths; and a receiving apparatus including: a light detection part that receives the optical signal from the transmitting apparatus; a discrimination part that determines whether or not condensation exists in at least one region of regions where the optical signal passes, based on the humidity measured by the humidity measuring apparatus and a light intensity of the optical signal received by the light detection part.Type: GrantFiled: March 8, 2018Date of Patent: September 1, 2020Assignee: NEC CORPORATIONInventor: Takeshi Akagawa
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Publication number: 20200250449Abstract: A living body determination device includes: a light irradiation device that irradiates a measuring object with a first light including a plurality of spectrums; a spectroscopic device that disperses a light at intensity depending on a wavelength and outputs the light; an image acquisition device that receives the light output by the spectroscopic device and outputs image information representing brightness depending on the intensity of the light; and a control unit. The control unit, for each spectrum of the first light, acquires image information with respect to the measuring object from the image acquisition device, based on the image information, selects one or more areas, for each of the areas, acquires spectroscopic information, and based on whether the spectroscopic information satisfies a predetermined condition, determines whether the measuring object is a living body.Type: ApplicationFiled: April 24, 2020Publication date: August 6, 2020Applicant: NEC CorporationInventors: Yuji OHNO, Masahiro KUBO, Katsumi ABE, Ersin ALTINTAS, Takeshi AKAGAWA, Tetsuri ARIYAMA
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Publication number: 20200196879Abstract: An identification device including a wave extraction unit, a time difference unit, and an information identification unit. The wave extraction unit extracts an ejection wave occurring in reply to heartbeat and a reflected wave occurring in reply to passage of blood outflowing from a heart through a bifurcation of blood vessels, from pulse wave information representing a pulse wave of an identification target. The time difference unit generates time-difference information representing a time difference between the extracted ejection wave and the extracted reflected wave.Type: ApplicationFiled: July 11, 2017Publication date: June 25, 2020Applicant: NEC CorporationInventors: Tetsuri ARIYAMA, Terumi UMEMATSU, Yuji OHNO, Katsumi ABE, Mineto SATOH, Takeshi AKAGAWA, Masahiro KUBO, Tan AZUMA, Kenichiro FUJIYAMA, Soichiro ARAKI
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Publication number: 20200196912Abstract: An identification device including a generation unit and an information identification unit. The generation unit generates factor information relating to pulse-wave information with respect to an identification target in accordance with biological model information representing a relevance between pulse-wave information representing a pulse wave and the factor information representing a factor of pulse wave. The information identification unit selects certain list information satisfying a predetermined determination criterion of the factor information generated by the generation unit out of list information associating the factor information generated based on the pulse-wave information representing a pulse wave of a biological subject to be an identification target with identification information for identifying the biological subject, and identifies the identification information in the selected certain list information.Type: ApplicationFiled: July 11, 2017Publication date: June 25, 2020Applicant: NEC CorporationInventors: Tetsuri ARIYAMA, Terumi UMEMATSU, Yuji OHNO, Katsumi ABE, Mineto SATOH, Takeshi AKAGAWA, Masahiro KUBO, Tan AZUMA, Kenichiro FUJIYAMA, Soichiro ARAKI
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Patent number: 10591407Abstract: Provided is an excrement analysis device capable of analyzing urine and feces simultaneously without increasing a burden of maintenance. The excrement analysis device 10 of the present invention includes: a light source 20 that emits an inspection light toward an inspection area in a toilet bowl; spectroscopic information acquisition means 30 that receives an inspection light emitted toward the inspection area and acquires spectroscopic information from the received inspection light; and analysis means 40 that extracts a first space containing the largest amount of urine components and a second space containing the largest amount of fecal components from the acquired spectroscopic information, and outputs a result of analysis of urine and feces on the basis of spectroscopic information regarding the first space and the second space.Type: GrantFiled: October 23, 2015Date of Patent: March 17, 2020Assignee: NEC CorporationInventors: Takeshi Akagawa, Masahiro Kubo, Katsumi Abe, Kimiyasu Takoh, Ersin Altintas, Yuji Ohno, Tetsuri Ariyama
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Patent number: 10545016Abstract: A light measurement device that maintains high measurement precision. The light measurement device includes: light source that irradiates light upon measurement object; branch part that splits transmitted light or reflected light from measurement object; phase-changing unit that changes the phase of one beam of the branched light beams; phase-fixing unit that maintains the phase of the other beam of the branched light beams; adjustment mechanism, which is provided in phase-changing unit or phase-fixing unit, for adjusting the propagation direction of light; multiplexer that causes the light emitted by each of phase-changing unit and phase-fixing unit to interfere with each other; detection unit that detects light that is interfered with by multiplexer; and control unit that controls the adjustment mechanism on the basis of the luminance values of an interference image that is detected by detection unit and adjusts the propagation direction of light in phase-changing unit or phase-fixing unit.Type: GrantFiled: August 7, 2017Date of Patent: January 28, 2020Assignees: NEC CORPORATION, NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITYInventors: Takeshi Akagawa, Masahiro Kubo, Katsumi Abe, Kimiyasu Takoh, Ersin Altintas, Yuji Ohno, Tetsuri Ariyama, Ichiro Ishimaru
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Publication number: 20200018693Abstract: A gas detection system, comprising: a humidity measuring apparatus that measures humidity; a transmitting apparatus that includes a light source which emits an optical signal of a plurality of wavelengths; and a receiving apparatus including: a light detection part that receives the optical signal from the transmitting apparatus; a discrimination part that determines whether or not condensation exists in at least one region of regions where the optical signal passes, based on the humidity measured by the humidity measuring apparatus and a light intensity of the optical signal received by the light detection part.Type: ApplicationFiled: March 8, 2018Publication date: January 16, 2020Applicant: NEC CorporationInventor: Takeshi AKAGAWA