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公开(公告)号：US10545016B2
公开(公告)日：2020-01-28
申请号：US16322592
申请日：2017-08-07
Inventor： Takeshi Akagawa , Masahiro Kubo , Katsumi Abe , Kimiyasu Takoh , Ersin Altintas , Yuji Ohno , Tetsuri Ariyama , Ichiro Ishimaru
Abstract: 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.
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公开(公告)号：US10194811B2
公开(公告)日：2019-02-05
申请号：US15118227
申请日：2015-02-13
Applicant: NEC CORPORATION
Inventor： Yuji Ohno , Masahiro Kubo , Kimiyasu Takoh , Katsumi Abe , Ersin Altintas , Hiroshi Imai , Osamu Tochikubo
IPC: A61B5/0225 , A61B5/022 , A61B5/021 , A61B5/00
Abstract: Disclosed are a blood pressure device, etc., that is capable of highly accurate of blood pressure. The blood pressure device (101) has a blood pressure unit (102) that: finds a specific blood pressure related to pulse wave information (2002), by browsing blood pressure information (2001) associating the pulse wave information and blood pressure related to pulse wave signals caused by blood pressure during a specific period and measured, the pulse wave information associating blood pressure during the specific period and the pulse wave signals; and estimates the blood pressure relating to the pulse wave information (2002) on the basis of the found specific blood pressure.
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公开(公告)号：US11660025B2
公开(公告)日：2023-05-30
申请号：US16629080
申请日：2017-07-11
Applicant: NEC Corporation
Inventor： Tetsuri Ariyama , Terumi Umematsu , Yuji Ohno , Katsumi Abe , Mineto Satoh , Takeshi Akagawa , Masahiro Kubo , Tan Azuma , Kenichiro Fujiyama , Soichiro Araki
IPC: A61B5/117 , A61B5/02 , G06F21/32 , A61B5/0295
CPC classification number: A61B5/117 , G06F21/32 , A61B5/02035 , A61B5/0295
Abstract: 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.
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公开(公告)号：US11231272B2
公开(公告)日：2022-01-25
申请号：US16764526
申请日：2018-10-30
Inventor： Takeshi Akagawa , Masahiro Kubo , Katsumi Abe , Ersin Altintas , Yuji Ohno , Tetsuri Ariyama , Ichiro Ishimaru
Abstract: 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.
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公开(公告)号：US11848091B2
公开(公告)日：2023-12-19
申请号：US17050594
申请日：2018-04-26
Applicant: NEC Corporation
Inventor： Yutaka Uno , Masahiro Kubo , Yuji Ohno , Masahiro Hayashitani , Yuan Luo , Eiji Yumoto
IPC: G16H20/30 , G06T7/70 , G06N20/00 , G06T7/20 , G06V40/20 , G06F18/214 , G06V10/764 , G06V20/40 , G06V20/52
CPC classification number: G16H20/30 , G06F18/214 , G06N20/00 , G06T7/20 , G06T7/70 , G06V10/764 , G06V20/49 , G06V20/52 , G06V40/20 , G06T2207/10016 , G06T2207/20081 , G06T2207/30196
Abstract: A motion estimation system 80 includes a pose acquisition unit 81 and an action estimation unit 82. The pose acquisition unit 81 acquires, in time series, pose information representing a posture of one person and a posture of another person identified simultaneously in a situation in which a motion of the one person affects a motion of the other person. The action estimation unit 82 divides the acquired time series pose information on each person by unsupervised learning to estimate an action series that is a series of motions including two or more pieces of pose information.
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Patent Agency Ranking
公开(公告)号：US11436871B2
公开(公告)日：2022-09-06
申请号：US16857680
申请日：2020-04-24
Applicant: NEC Corporation
Inventor： Yuji Ohno , Masahiro Kubo , Katsumi Abe , Ersin Altintas , Takeshi Akagawa , Tetsuri Ariyama
IPC: A61B5/00 , G06V10/143 , G06V40/40 , A61B5/1171 , G06V10/60 , G06V10/88 , G06V10/141 , G06V40/16 , G06V40/12 , G01J3/28 , G06F21/32
Abstract: 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.
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7.发明授权公开(公告)号：US11298031B2
公开(公告)日：2022-04-12
申请号：US16086078
申请日：2017-03-17
Applicant: NEC Corporation
Inventor： Tetsuri Ariyama , Masahiro Kubo , Katsumi Abe , Ersin Altintas , Yuji Ohno , Takeshi Akagawa
Abstract: 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.
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公开(公告)号：US10429244B2
公开(公告)日：2019-10-01
申请号：US15559872
申请日：2016-03-17
Applicant: NEC Corporation
Inventor： Takeshi Akagawa , Masahiro Kubo , Katsumi Abe , Kimiyasu Takoh , Ersin Altintas , Yuji Ohno , Tetsuri Ariyama
Abstract: [Object]To obtain interference light having a stronger light intensity, and to more accurately measure a refractive index of a measured object, with a simplified configuration.[Solution Means]A light measurement device 100 includes a phase adjustment unit 120 and a detector 140. The phase adjustment unit 120 outputs reference light E(R) based on object light E1 being light to be obtained by transmission or reflection of light E from a light source with respect to a measured object 200, and signal light E(S) whose phase is adjusted to be different from a phase of signal light. The detector 140 derives a transmission or reflection light intensity distribution or a refractive index of the measured object 200, based on interference light E2 between signal light E(S) and reference light E(R) to be output by the phase adjustment unit 120. An optical axis of light E from a light source is linearly disposed. The phase adjustment unit 120 and the detector 140 are disposed on the optical axis of light E from a light source.
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公开(公告)号：US10268874B2
公开(公告)日：2019-04-23
申请号：US15523057
申请日：2015-10-20
Applicant: NEC Corporation
Inventor： Yuji Ohno , Masahiro Kubo , Katsumi Abe , Takeshi Akagawa , Kimiyasu Takoh , Ersin Altintas , Tetsuri Ariyama
Abstract: A biometric authentication apparatus 10 according to the present invention can be installed in facilities such as airports in order to improve the reliability of biometric authentication to ensure a high level of security. The biometric authentication apparatus 10 includes a illumination unit 11 which irradiates a human finger with light; an image acquisition unit 13 which acquires a plurality of images indicating changes in luminance by receiving light scattered at the human finger that is a part of the light with which the human finger is irradiated by the illumination unit 11 and converting the received light to luminance information according to the intensity of the light; an image-to-biometric-information conversion unit 14 which converts the plurality of images acquired by the image acquisition unit 13 to biometric information indicating a pulse wave in the human finger; and a biometric authentication unit 16 which performs biometric authentication when a pulse wave signal which is the biometric information resulting from the conversion by the image-to-biometric-information conversion unit 14 is greater than a predetermined threshold.
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公开(公告)号：US09848782B2
公开(公告)日：2017-12-26
申请号：US15118267
申请日：2015-02-13
Applicant: NEC CORPORATION
Inventor： Yuji Ohno , Masahiro Kubo , Kimiyasu Takoh , Katsumi Abe , Ersin Altintas , Hiroshi Imai , Osamu Tochikubo
CPC classification number: A61B5/02225 , A61B5/02116 , A61B5/02416 , A61B5/7207 , A61B5/7278 , A61B5/742 , A61B5/7475
Abstract: Provided are a blood pressure estimation device, and the like, the device being capable of accurately estimating blood pressure. The blood pressure estimation device includes a blood pressure estimation unit which estimates a blood pressure on the basis of a pressure in a specific time period and differences between a plurality of pulse wave signals measured in the specific time period due to the pressure.
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