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    Feature selection for cardiac arrhythmia classification and screening
    1.
    发明授权
    Feature selection for cardiac arrhythmia classification and screening 有权

    公开(公告)号：US11311201B2

    公开(公告)日：2022-04-26

    申请号：US16672176

    申请日：2019-11-01

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yelei Li ,  Xin Sui

    IPC: A61B5/024 ,  G16H50/20 ,  A61B5/00 ,  A61B5/316 ,  A61B5/363

    Abstract: A method of measuring biological signals of a person including obtaining physiological signals; converting the physiological signals to an energy entropy signal, determining one or more statistical features based on the energy entropy signal, and selecting and combining two or more of the features. The features include two or more of: Shannon entropy of power spectral density (PSD) of energy entropy; minimum envelopes of three axis signals; minimum Shannon entropy of PSD of three axis entropies; standard deviation of interbeat intervals (IBIs); differences of median filtered IBIs; determinism of recurrence plot of energy entropy; Kurtosis of energy entropy; minimum peak-to-peak amplitude three axis signals; peak-to-peak amplitude of energy entropy; laminarity of recurrence plot of energy entropy; Shannon entropy of horizontal structures in recurrence plot of energy entropy; standard deviation of time-averaged spectrogram; minimum standard deviation of peak positions in spectrogram; and minimum standard deviation of peak widths in spectrogram.

    SELF-POWERED WEARABLE FOR CONTINUOUS BIOMETRICS MONITORING
    4.
    发明申请
    SELF-POWERED WEARABLE FOR CONTINUOUS BIOMETRICS MONITORING 审中-公开

    公开(公告)号：US20190000332A1

    公开(公告)日：2019-01-03

    申请号：US15888853

    申请日：2018-02-05

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yelei Li ,  Matthew C. Wiggins

    IPC: A61B5/024 ,  A61B5/00 ,  A61B5/053 ,  G01P15/14 ,  H01M10/46 ,  H01M10/04

    Abstract: A user-wearable device utilizes energy harvesting technology to lengthen battery life or eliminates the need to charge the wearable device. In one embodiment, a user-wearable device combines energy harvesting technology with low power sensors and high efficiency processing methods to realize a self-charging or battery-less biometric monitoring system. The wearable biometric monitoring system provides accurate biometric measurements while enhancing user experience by extending the battery life or completely eliminating the need for the user to charge the device.

    Method for low-power-consumption, robust estimation of cardiovascular periodicity, contour analysis, and heart rate
    6.
    发明授权
    Method for low-power-consumption, robust estimation of cardiovascular periodicity, contour analysis, and heart rate 有权

    公开(公告)号：US10405803B2

    公开(公告)日：2019-09-10

    申请号：US14928072

    申请日：2015-10-30

    Applicant: Samsung Electronics Co., LTD

    Inventor： Yelei Li ,  Asif Khalak

    IPC: A61B5/00 ,  A61B5/024 ,  A61B5/0402 ,  A61B5/08 ,  A61B5/1455 ,  G01N33/483

    Abstract: A computer-implemented method for estimating a cardiovascular feature, such as heart interbeat intervals, using time-delay embedding includes receiving a quasiperiodic observational data stream from a biophysiological sensor, selecting a first delay value, and generating a first vector with a first dimensionality in a multidimensional coordinate space from the observational data stream through time-delay embedding. The method also includes selecting a first plane with a second dimensionality equal to one less than the first dimensionality and which passes through an origin of the coordinate space, identifying a plurality of crossings of the first vector through the first plane in one direction, and correlating a time value corresponding to each of the crossings. The method further includes calculating a plurality of periods between the time values corresponding to consecutive crossings, where the periods represent a stream of interbeat intervals.

    CONTACTLESS BIOMETRICS MONITORING SYSTEM AND METHOD
    8.
    发明申请
    CONTACTLESS BIOMETRICS MONITORING SYSTEM AND METHOD 有权

    公开(公告)号：US20210374399A1

    公开(公告)日：2021-12-02

    申请号：US16942692

    申请日：2020-07-29

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Chor Hei Ernest Cheung ,  Yelei Li ,  Lin Sun ,  Caleb J. Li

    IPC: G06K9/00

    Abstract: A contactless biometrics monitoring system includes: a first device to transmit a modulated signal into an environment, the modulated signal being modulated to amplify one or more biometric patterns of a user located within the environment; and a second device to receive a reflection of the modulated signal off the user located within the environment. The reflection includes a vibration component, and the vibration component indicates biometric information of the user corresponding to the one or more biometric patterns amplified by the modulated signal.

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