公开(公告)号：US20230389859A1

公开(公告)日：2023-12-07

申请号：US18202829

申请日：2023-05-26

Applicant: NEC Corporation

Inventor： Kazuki IHARA ,  Kenichiro FUKUSHI ,  Zhenwei WANG ,  Chenhui HUANG ,  Hiroshi KAJITANI ,  Fumiyuki NIHEY ,  Yoshitaka NOZAKI ,  Kentaro NAKAHARA

IPC: A61B5/00 ,  A61B5/11

CPC classification number: A61B5/4585 ,  A61B5/112 ,  A61B5/6807 ,  A61B2562/0219

Abstract: An index value estimation device including a data acquisition unit that acquires feature amount data including a feature amount extracted from sensor data related to a motion of a foot of a user and used for estimating an index value indicating a knee state of the user, a storage unit that stores an estimation model that outputs an index value according to an input of the feature amount data, an estimation unit that estimates an output obtained by inputting the acquired feature amount data to the estimation model as an index value indicating the knee state of the user, and an output unit that outputs information about the estimated index value indicating the knee state of the user.

公开(公告)号：US20230371849A1

公开(公告)日：2023-11-23

申请号：US18195232

申请日：2023-05-09

Applicant: NEC Corporation

Inventor： Kazuki IHARA ,  Kenichiro FUKUSHI ,  Zhenwei WANG ,  Hiroshi KAJITANI ,  Fumiyuki NIHEY ,  Chenhui HUANG ,  Yoshitaka NOZAKI ,  Kentaro NAKAHARA

IPC: A61B5/11

CPC classification number: A61B5/112 ,  A61B2562/0219

Abstract: Provided is a gait information generation device including an acquisition unit that acquires gait data including time-series data of a foot position of a subject, a detection unit that detects a start point and an end point of a gait cycle from the time-series data of the foot position included in the gait data, a calculation unit that calculates a first movement amount component related to the start point and a second movement amount component related to the end point, a gait information generation unit that generates gait information about a gait movement path of the subject using the calculated first movement amount component and the calculated second movement amount component, and an output unit that outputs the generated gait information.

公开(公告)号：US20230181052A1

公开(公告)日：2023-06-15

申请号：US18015279

申请日：2020-07-15

Applicant: NEC Corporation

Inventor： Kazuki IHARA ,  Hiroyuki ENDOH

IPC: A61B5/026 ,  A61B5/024 ,  A61B5/00

CPC classification number: A61B5/026 ,  A61B5/024 ,  A61B5/7235

Abstract: According to the present invention, in a configuration in which a biological signal is received from an attachment-type device including one or more light emitting means and two or more light receiving means, information on a living body is acquired with high accuracy. A modulation unit (110) dims the one or more light emitting means with a specific frequency, a receiving unit (120) receives a biological signal based on the light received from a living body through the two or more light receiving means, and an adjusting unit (130) adjusts the intensity of the biological signal acquired from each light receiving means on the basis of the component of a specific frequency of the biological signal.

公开(公告)号：US20220249028A1

公开(公告)日：2022-08-11

申请号：US17623655

申请日：2019-07-16

Applicant: NEC Corporation

Inventor： Kazuki IHARA

IPC: A61B5/00

Abstract: Accurate, low cost detection of biological signals can be achieved by a biological signal estimation device provided with: a first measurement unit for measuring a first signal generated in a living body; a second measurement unit for measuring a second signal generated in the living body; a comparison unit for comparing characteristics of the first signal and the second signal; and an estimation unit for estimating a biological signal in the living body by performing signal processing on the first signal and the second signal on the basis of the result of comparison of the characteristics by the comparison unit.

公开(公告)号：US20220183588A1

公开(公告)日：2022-06-16

申请号：US17598997

申请日：2019-04-05

Applicant: NEC Corporation

Inventor： Kenichiro FUKUSHI ,  Chenhui HUANG ,  Noriyuki TONOUCHI ,  Kazuki IHARA

IPC: A61B5/11 ,  A61B5/103 ,  A61B5/00

Abstract: In order to easily and accurately determine a walk cycle, this walk cycle determination system is provided with: a reception unit for receiving sensor data including acceleration and angular velocity acquired by a sensor mounted to footwear; a detection unit which generates time-series data of the orientation angle of at least one foot using the acceleration and angular velocity included in the sensor data, and detects maximal values and minimal values from the time-series data of the orientation angle; and a determination unit for determining the walk cycle based on the sequence of the maximal values and the minimal values.

公开(公告)号：US20220146280A1

公开(公告)日：2022-05-12

申请号：US17436210

申请日：2019-03-27

Applicant: NEC CORPORATION

Inventor： Noriyuki TONOUCHI ,  Kazuki IHARA ,  Chenhui HUANG ,  Kenichiro FUKUSH

IPC: G01C23/00

Abstract: This walk discrimination device is provided with: a data reception unit for receiving sensor data that includes an acceleration and an angular speed acquired by a sensor provided to a shoe in order to measure the walk of a pedestrian for each single step on the basis of the sensor data; an acceleration determination unit for determining whether the acceleration included in the sensor data is positive or negative; an attitude angle calculation unit which calculates an attitude angle using the acceleration and the angular speed included in the sensor data; an attitude angle determination unit which determines whether or not the attitude angle calculated by the attitude angle calculation unit has exceeded a threshold value and determines whether or not a peak of the attitude angle has been detected; a walk discrimination unit which discriminates a walk on the basis of a sequence of the determinations made by the acceleration determination unit and the attitude angle determination unit; and an output unit which outputs a discrimination result provided by the walk discrimination unit.

公开(公告)号：US20200346223A1

公开(公告)日：2020-11-05

申请号：US16758548

申请日：2017-10-26

Applicant: NEC CORPORATION

Inventor： Kazuki IHARA

IPC: B03C5/02 ,  C01B32/172 ,  C01B32/174

Abstract: A nanocarbon separation device includes a separation tank that is configured to accommodate a dispersion liquid including nanocarbons, a first electrode provided at an upper part in the separation tank, a second electrode provided at a lower part in the separation tank, an evaluation unit that is configured to evaluate a physical state or a chemical state of the dispersion liquid, and a determination unit that is configured to determine a separation state between metallic nanocarbons and semiconducting nanocarbons included in the dispersion liquid from the physical state or the chemical state.

公开(公告)号：US20200338570A1

公开(公告)日：2020-10-29

申请号：US16758320

申请日：2017-10-26

Applicant: NEC Corporation

Inventor： Kazuki IHARA

IPC: B03C5/02 ,  C01B32/172 ,  C01B32/174

Abstract: A nanocarbon separation device includes a separation tank that is configured to accommodate a dispersion liquid including nanocarbons, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, an evaluation unit that is configured to evaluate a physical state or a chemical state of the dispersion liquid, and a fractionation unit that is configured to fractionate the dispersion liquid based on the physical state or the chemical state.

公开(公告)号：US20180033940A1

公开(公告)日：2018-02-01

申请号：US15549910

申请日：2016-02-17

Applicant: NEC CORPORATION

Inventor： Akihiro KIRIHARA ,  Masahiko ISHIDA ,  Kazuki IHARA ,  Yuma IWASAKI ,  Hiroko SOMEYA

IPC: H01L35/22 ,  H01L43/08 ,  H01L43/06 ,  G11C11/16 ,  H01L43/10 ,  H01L35/34 ,  H01L35/28 ,  H01L43/04

CPC classification number: H01L35/22 ,  G11C11/161 ,  G11C11/1675 ,  H01L27/105 ,  H01L29/82 ,  H01L35/28 ,  H01L35/34 ,  H01L37/00 ,  H01L43/04 ,  H01L43/065 ,  H01L43/08 ,  H01L43/10

Abstract: A spin current-electric current conversion structure using a material containing 5d-transition metal has low efficiency of spin current-electric current conversion; therefore, a spin current-electric current conversion structure according to an exemplary aspect of the present invention includes a 4d-transition metal oxide structure consisting primarily of an oxide containing a 4d-transition-metal element; a spin current input-output structure configured to allow a spin current to flow into and out in a direction perpendicular to a plane of the 4d-transition metal oxide structure; and an electric current input-output structure configured to allow an electric current to flow into and out, the electric current conducting in an in-plane direction of the 4d-transition metal oxide structure.