Patents by Inventor Zhenwei Wang
Zhenwei Wang 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: 20240206767Abstract: A measurement device that includes a calculation unit that calculates, using sensor data measured by a sensor according to a measurement motion regarding a limb of a user, the sensor being attached to the user at a predetermined attachment site, a length and a central angle of an arc related to a trajectory of the sensor in a period of the measurement motion, and an estimation unit that estimates a radius of the arc calculated using the calculated length and the calculated central angle of the arc as a length of the limb of the user.Type: ApplicationFiled: February 10, 2022Publication date: June 27, 2024Applicant: NEC CorporationInventors: Zhenwei WANG, Chenhui Huang, Kenichiro Fukushi
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Publication number: 20240188851Abstract: Provided is a waist swinging estimation device including a communication unit that acquires feature amount data including a feature amount extracted from a gait waveform of a spatial acceleration and a spatial angular velocity included in sensor data regarding a movement of a foot of a subject and used for estimation of waist swinging that is an index regarding a movement of a waist, a storage unit that stores an estimation model that outputs an estimated value regarding the waist swinging according to an input of a feature amount included in the feature amount data, an estimation unit that inputs a feature amount included in the acquired feature amount data to the estimation model, and estimate waist swinging of the subject according to an estimated value regarding the waist swinging output from the estimation model, and an output unit that outputs information according to waist swinging of the subject.Type: ApplicationFiled: January 12, 2024Publication date: June 13, 2024Applicant: NEC CorporationInventors: Zhenwei WANG, Chenhui Huang, Kazuki Ihara, Kenichiro Fukushi, Fumiyuki Nihey, Hiroshi Kajitani, Yoshitaka Nozaki, Kentaro Nakahara
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Publication number: 20240172966Abstract: Provided is a harmonic index estimation device including a communication unit that acquires feature amount data including a feature amount used for estimation of a harmonic index related to smoothness of movement of a waist, the feature amount being extracted from a gait waveform of a spatial acceleration and a spatial angular velocity included in sensor data related to movement of a foot of a subject, a storage unit that stores an estimation model that outputs an estimation value related to the harmonic index, according to an input of the feature amount included in the feature amount data, an estimation unit that inputs the feature amount included in the feature amount data to the estimation model and estimate a harmonic index of the subject according to the estimation value output from the estimation model, and an output unit that outputs information associated to the harmonic index.Type: ApplicationFiled: January 12, 2024Publication date: May 30, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Zhenwei WANG, Fumiyuki NIHEY
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Publication number: 20240164705Abstract: 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.Type: ApplicationFiled: December 26, 2023Publication date: May 23, 2024Applicant: NEC CorporationInventors: Kazuki IHARA, Kenichiro FUKUSHI, Zhenwei WANG, Chenhui HUANG, Hiroshi KAJITANI, Fumiyuki NIHEY, Yoshitaka NOZAKI, Kentaro NAKAHARA
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Publication number: 20240161921Abstract: A biometric information processing device includes an extraction unit that extracts a daily measurement value of a common measurement item common to facility measurement data measured in a facility from daily measurement data measured using the sensor data regarding movement of a foot of a user, and a correction unit that corrects a facility measurement value of the common measurement item stored in advance based on the extracted daily measurement value of the common measurement item.Type: ApplicationFiled: April 1, 2021Publication date: May 16, 2024Applicant: NEC CorporationInventors: Kenichiro Fukushi, Zhenwei Wang, Chenhui Huang, Fumiyuki Nihey, Kentaro Nakahara
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Publication number: 20240148278Abstract: An estimation device that includes a detection unit that detects a terminal stance period from time-series data of sensor data based on a physical quantity related to movement of a foot measured by a sensor provided at a foot portion, a feature amount extraction unit that extracts a feature amount from an angular waveform in a coronal plane during the terminal stance period, and a presumption unit that estimates a degree of pronation/supination of the foot by using the feature amount extracted from the angular waveform in the coronal plane.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Kenichiro FUKUSHI, Zhenwei WANG, Hiroshi KAJITANI, Fumiyuki NIHEY, Kentaro NAKAHARA
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Publication number: 20240148317Abstract: Provided is a pelvic inclination estimation device including a communication unit that acquires feature amount data including a feature amount to be used for estimation of a pelvic inclination, the feature amount being extracted from a gait waveform of a spatial acceleration and a spatial angular velocity included in sensor data related to movement of a foot of a subject, a storage unit that stores an estimation model that outputs an estimation value related to the pelvic inclination according to an input of the feature amount included in the feature amount data, an estimation unit that inputs a feature amount included in the acquired feature amount data to the estimation model and estimate a pelvic inclination of the subject according to the estimation value output from the estimation model, and an output unit that outputs information associated to the pelvic inclination of the subject.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: NEC CorporationInventors: Zhenwei WANG, Chenhui HUANG, Kenichiro FUKUSHI, Kazuki IHARA, Fumiyuki NIHEY, Hiroshi KAJITANI, Yoshitaka NOZAKI, Kentaro NAKAHARA
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Publication number: 20240151638Abstract: An example spectrum measurement apparatus includes: a plurality of first light emitter units, where each first light emitter unit is adapted to emit light having a first emission spectrum in a first band range, first emission spectrums emitted by any two first light emitter units are not correlated, and the plurality of first light emitter units can be operated to emit light having corresponding first emission spectrums to a to-be-measured object in a time-division manner; a first single-point photodetector, adapted to separately detect light intensity of light that is emitted by each first light emitter unit and that is reflected by the to-be-measured object; and a calculation apparatus, adapted to determine a first reflectivity spectrum of the to-be-measured object in the first band range based on the plurality of first emission spectrums and the detected corresponding light intensity.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Inventor: Zhenwei Wang
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Publication number: 20240148277Abstract: An estimation device that includes a detection unit that detects a terminal stance period from time-series data of sensor data based on a physical quantity related to movement of a foot measured by a sensor provided at a foot portion, a feature amount extraction unit that extracts a feature amount from an angular waveform in a coronal plane during the terminal stance period, and a presumption unit that estimates a degree of pronation/supination of the foot by using the feature amount extracted from the angular waveform in the coronal plane.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Kenichiro FUKUSHI, Zhenwei WANG, Hiroshi KAJITANI, Fumiyuki NIHEY, Kentaro NAKAHARA
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Publication number: 20240148276Abstract: An estimation device that includes a detection unit that detects a terminal stance period from time-series data of sensor data based on a physical quantity related to movement of a foot measured by a sensor provided at a foot portion, a feature amount extraction unit that extracts a feature amount from an angular waveform in a coronal plane during the terminal stance period, and a presumption unit that estimates a degree of pronation/supination of the foot by using the feature amount extracted from the angular waveform in the coronal plane.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Kenichiro Fukushi, Zhenwei Wang, Hiroshi Kajitani, Fumiyuki Nihey, Kentaro Nakahara
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Publication number: 20240138710Abstract: Provided is a waist swinging estimation device including a communication unit that acquires feature amount data including a feature amount extracted from a gait waveform of a spatial acceleration and a spatial angular velocity included in sensor data regarding a movement of a foot of a subject and used for estimation of waist swinging that is an index regarding a movement of a waist, a storage unit that stores an estimation model that outputs an estimated value regarding the waist swinging according to an input of a feature amount included in the feature amount data, an estimation unit that inputs a feature amount included in the acquired feature amount data to the estimation model, and estimate waist swinging of the subject according to an estimated value regarding the waist swinging output from the estimation model, and an output unit that outputs information according to waist swinging of the subject.Type: ApplicationFiled: January 11, 2024Publication date: May 2, 2024Applicant: NEC CorporationInventors: Zhenwei Wang, Chenhui Huang, Kazuki Ihara, Kenichiro Fukushi, Fumiyuki Nihey, Hiroshi Kajitani, Yoshitaka Nozaki, Kentaro Nakahara
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Publication number: 20240138777Abstract: A measurement device that includes a detection unit that detects a gait event from time-series data of sensor data related to motion of a foot, and a measurement unit that performs a measurement of lower limbs by using the sensor data for a prescribed period with a timing of the gait event as a start point, based on a geometric model on which a constraint condition related to motion of the lower limbs is imposed.Type: ApplicationFiled: December 28, 2023Publication date: May 2, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Zhenwei WANG, Kenichiro FUKUSHI
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Publication number: 20240138713Abstract: Provided is a harmonic index estimation device including a communication unit that acquires feature amount data including a feature amount used for estimation of a harmonic index related to smoothness of movement of a waist, the feature amount being extracted from a gait waveform of a spatial acceleration and a spatial angular velocity included in sensor data related to movement of a foot of a subject, a storage unit that stores an estimation model that outputs an estimation value related to the harmonic index, according to an input of the feature amount included in the feature amount data, an estimation unit that inputs the feature amount included in the feature amount data to the estimation model and estimate a harmonic index of the subject according to the estimation value output from the estimation model, and an output unit that outputs information associated to the harmonic index.Type: ApplicationFiled: January 11, 2024Publication date: May 2, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Zhenwei WANG, Fumiyuki NIHEY
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Publication number: 20240138757Abstract: Provided is a pelvic inclination estimation device including a communication unit that acquires feature amount data including a feature amount to be used for estimation of a pelvic inclination, the feature amount being extracted from a gait waveform of a spatial acceleration and a spatial angular velocity included in sensor data related to movement of a foot of a subject, a storage unit that stores an estimation model that outputs an estimation value related to the pelvic inclination according to an input of the feature amount included in the feature amount data, an estimation unit that inputs a feature amount included in the acquired feature amount data to the estimation model and estimate a pelvic inclination of the subject according to the estimation value output from the estimation model, and an output unit that outputs information associated to the pelvic inclination of the subject.Type: ApplicationFiled: January 11, 2024Publication date: May 2, 2024Applicant: NEC CorporationInventors: Zhenwei WANG, Chenhui HUANG, Kenichiro FUKUSHI, Kazuki IHARA, Fumiyuki NIHEY, Hiroshi KAJITANI, Yoshitaka NOZAKI, Kentaro NAKAHARA
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Publication number: 20240130691Abstract: A measurement device that includes a detection unit that detects a gait event from time-series data of sensor data related to motion of a foot, and a measurement unit that performs a measurement of lower limbs by using the sensor data for a prescribed period with a timing of the gait event as a start point, based on a geometric model on which a constraint condition related to motion of the lower limbs is imposed.Type: ApplicationFiled: December 28, 2023Publication date: April 25, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Zhenwei WANG, Kenichiro FUKUSHI
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Publication number: 20240138250Abstract: A walking index calculation device that includes a waveform generation unit configured to generate a walking waveform by using sensor data regarding motion of a foot acquired by a sensor installed in footwear; a detection unit configured to detect a timing at which a clearance of a toe is minimized from the walking waveform; and a calculation unit configured to calculate a minimum value of the clearance of the toe by using a walking parameter at the timing at which the clearance of the toe is minimized.Type: ApplicationFiled: December 26, 2023Publication date: April 25, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Fumiyuki Nihey, Kenichiro Fukushi, Zhenwei Wang
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Publication number: 20240127964Abstract: A data processing device that includes a classification unit that classifies at least one piece of living-body information data into at least one group based on an attribute of at least one user, the at least one piece of living-body information data including a sensor value relating to a living body of the user, and a measurement time and a measurement position of the sensor value, and a learning unit that generates, for each of the group, a model for estimating interpolation data for interpolating a deficit of the living-body information data using a correlation among the sensor value included in the living-body information data, the measurement time, and the measurement position.Type: ApplicationFiled: December 18, 2023Publication date: April 18, 2024Applicant: NEC CorporationInventors: Kenichiro Fukushi, Chenhui Huang, Zhenwei Wang, Fumiyuki Nihey, Kentaro Nakahara
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Publication number: 20240127486Abstract: A walking index calculation device that includes a waveform generation unit configured to generate a walking waveform by using sensor data regarding motion of a foot acquired by a sensor installed in footwear; a detection unit configured to detect a timing at which a clearance of a toe is minimized from the walking waveform; and a calculation unit configured to calculate a minimum value of the clearance of the toe by using a walking parameter at the timing at which the clearance of the toe is minimized.Type: ApplicationFiled: December 26, 2023Publication date: April 18, 2024Applicant: NEC CorporationInventors: Chenhui HUANG, Fumiyuki NIHEY, Kenichiro FUKUSHI, Zhenwei WANG
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Publication number: 20240127965Abstract: A data processing device that includes a classification unit that classifies at least one piece of living-body information data into at least one group based on an attribute of at least one user, the at least one piece of living-body information data including a sensor value relating to a living body of the user, and a measurement time and a measurement position of the sensor value, and a learning unit that generates, for each of the group, a model for estimating interpolation data for interpolating a deficit of the living-body information data using a correlation among the sensor value included in the living-body information data, the measurement time, and the measurement position.Type: ApplicationFiled: December 18, 2023Publication date: April 18, 2024Applicant: NEC CorporationInventors: Kenichiro Fukushi, Chenhui Huang, Zhenwei Wang, Fumiyuki Nihey, Kentaro Nakahara
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Publication number: 20240122531Abstract: 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.Type: ApplicationFiled: December 26, 2023Publication date: April 18, 2024Applicant: NEC CorporationInventors: Kazuki IHARA, Kenichiro FUKUSHI, Zhenwei WANG, Chenhui HUANG, Hiroshi KAJITANI, Fumiyuki NIHEY, Yoshitaka NOZAKI, Kentaro NAKAHARA