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Patent Agency Ranking
公开(公告)号：US11622693B2
公开(公告)日：2023-04-11
申请号：US17363857
申请日：2021-06-30
Inventor： Jenshan Lin , Changyu Wei
IPC: A61B5/0205 , A61B5/00 , A61B5/05 , A61B5/113 , A61B8/02 , A61B8/08 , G01S7/41 , G01S7/35 , G01S13/58 , G01S13/88 , A61B5/11
Abstract: Various examples are provided for non-contact vital sign acquisition. Information can be provided regarding vibrations of a target using a radar signal such as, e.g., non-contact vital sign measurement. Examples include estimation of heart rate, change in heart rate, respiration rate, and/or change in respiration rate, for a human or other animal. Implementations can produce one or both rates of vibration and/or change in one or both rates of vibration for a target other than an animal or human experiencing two vibrations at the same time, such as a motor, a vehicle incorporating a motor, or another physical object. Some implementations can estimate the respiration movement in the radar baseband output signal. The estimated respiration signal can then be subtracted from radar signals in the time domain and, optionally, can be further enhanced using digital signal processing techniques, to produce an estimate of the heartbeat pulses.
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公开(公告)号：US11129576B2
公开(公告)日：2021-09-28
申请号：US16093846
申请日：2017-04-14
Inventor： Jenshan Lin , Linda Frances Hayward , Tien-yu Haung
IPC: A61B5/0205 , A61B5/00 , A61B5/024 , G01S13/88 , A61B5/08 , A61B5/113 , G01S7/41 , G01S13/536
Abstract: Various examples are provided for accurate heart rate measurement. In one example, a method includes determining a respiratory rate (RR) and respiration displacement from radar-measured cardiorespiratory motion data; adjusting notch depths of a harmonics comb notch digital filter (HCNDF) based upon the respiration displacement; generating filtered cardiorespiratory data by filtering the radar-measured cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data. In another example, a system includes radar circuitry configured to receive a cardiorespiratory motion signal reflected from a monitored subject; and signal processing circuitry configured to determine a respiration displacement based upon the cardiorespiratory motion signal; adjust notch depths of a HCNDF based upon the respiration displacement; filter the cardiorespiratory motion data with the HCNDF; and identifying a heart rate (HR) from the filtered cardiorespiratory data.
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公开(公告)号：US11051702B2
公开(公告)日：2021-07-06
申请号：US15517214
申请日：2015-10-08
Inventor： Jenshan Lin , Changyu Wei
IPC: A61B5/0205 , A61B5/00 , A61B5/05 , A61B5/113 , A61B8/02 , A61B8/08 , G01S7/41 , G01S7/35 , G01S13/58 , G01S13/88 , A61B5/11
Abstract: Various examples are provided for non-contact vital sign acquisition. Information can be provided regarding vibrations of a target using a radar signal such as, e.g., non-contact vital sign measurement. Examples include estimation of heart rate, change in heart rate, respiration rate, and/or change in respiration rate, for a human or other animal. Implementations can produce one or both rates of vibration and/or change in one or both rates of vibration for a target other than an animal or human experiencing two vibrations at the same time, such as a motor, a vehicle incorporating a motor, or another physical object. Some implementations can estimate the respiration movement in the radar baseband output signal. The estimated respiration signal can then be subtracted from radar signals in the time domain and, optionally, can be further enhanced using digital signal processing techniques, to produce an estimate of the heartbeat pulses.
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公开(公告)号：US10401477B2
公开(公告)日：2019-09-03
申请号：US14631532
申请日：2015-02-25
Inventor： Jenshan Lin , Te-yu Kao
Abstract: Method and apparatus for detecting a movement, such as two or more periodic vibrations, of a target, by sending a radar signal, e.g., near 60 GHz, at the target and processing the signal reflected by the target. One or more components of the movement can have a predominant frequency, such as a frequency of vibration, and two or more components can have different frequencies and, optionally, different magnitudes. A quadrature receiver processes the received signal to produce a base band output signal having in-phase (I) and quadrature-phase (Q) outputs. The in-phase (I) and quadrature-phase (Q) outputs are cross-referenced and real target movement frequency recovered directly in the time domain. System nonlinearity, which does not occur simultaneously on the I and Q channels, is identified and removed. Radar signals having wavelengths near one or more of the target movement magnitudes can be used.
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公开(公告)号：US09774239B2
公开(公告)日：2017-09-26
申请号：US14368217
申请日：2012-12-24
Inventor： Raul Andres Chinga , Karl R. Zawoy , Subrata Roy , Jenshan Lin
CPC classification number: H02M1/08 , H01J37/32348 , H02M7/44 , H02M7/53803 , H02M2001/0003 , H02M2007/4815 , H05H1/46 , H05H2001/4682 , Y02B70/1441 , Y10T307/406
Abstract: Embodiments of the subject invention are drawn to power supply units and systems for supplying power to loads. Specific embodiments relate to systems incorporating the loads. The power supply units and systems can include a feedback mechanism for monitoring the system and maintaining a parameter of interest at or near a desired value (e.g., for maintaining the frequency of operation at or near resonance). The feedback mechanism is configured such that, if the at least one parameter indicates that the frequency of operation is away from a resonant frequency of the power amplifier, the feedback mechanism adjusts the frequency of operation closer to the resonant frequency of the power amplifier. The at least one load can have a variable impedance, though embodiments are not limited thereto.
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