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    Signal processing apparatus and method
    21.
    发明授权
    Signal processing apparatus and method 有权
    信号处理装置及方法

    公开(公告)号：US07489958B2

    公开(公告)日：2009-02-10

    申请号：US11417858

    申请日：2006-05-03

    Applicant: Mohamed K. Diab ,  Rex McCarthy

    Inventor： Mohamed K. Diab ,  Rex McCarthy

    IPC: A61B5/1455 ,  A61B5/02

    CPC classification number: A61B5/7257 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/02433 ,  A61B5/1455 ,  A61B5/14551 ,  A61B5/14552 ,  A61B5/6826 ,  A61B5/7203 ,  A61B5/7214 ,  A61B5/7225 ,  A61B5/726 ,  A61B5/7278 ,  A61B5/742 ,  G06K9/0051

    Abstract: A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain. The pulserate is found by identifying the largest spectral peak in the second spectral domain.

    Abstract translation: 一种用于分析被建模为包含期望和不期望的部分（例如噪声，FM和AM调制）的两个测量信号的方法和装置。 系数根据根据本发明定义的模型关联两个信号。 在一个实施例中，使用变换来评估两个测量信号的比率以找到适当的系数。 然后将测量的信号馈送到信号洗涤器中，该信号洗涤器使用系数去除不需要的部分。 信号擦除在时域或频域中进行。 该方法和装置对于血氧饱和度测量和脉动测量是特别有利的。 在另一个实施例中，通过将一组规则应用于经擦除的信号的频谱变换来获得脉冲发生器的估计。 在另一个实施例中，通过将擦除的信号从第一光谱域变换成第二光谱域来获得脉冲发生器的估计。 通过识别第二个光谱域中最大的光谱峰值来发现脉冲发生器。

    Signal processing apparatus and method
    22.
    发明授权
    Signal processing apparatus and method 有权
    信号处理装置及方法

    公开(公告)号：US07471971B2

    公开(公告)日：2008-12-30

    申请号：US10791683

    申请日：2004-03-02

    Applicant: Mohamed K. Diab ,  Rex McCarthy

    Inventor： Mohamed K. Diab ,  Rex McCarthy

    IPC: A61B5/1455 ,  A61B5/02

    CPC classification number: A61B5/7257 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/02433 ,  A61B5/1455 ,  A61B5/14551 ,  A61B5/14552 ,  A61B5/6826 ,  A61B5/7203 ,  A61B5/7214 ,  A61B5/7225 ,  A61B5/726 ,  A61B5/7278 ,  A61B5/742 ,  G06K9/0051

    Abstract: A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain. The pulserate is found by identifying the largest spectral peak in the second spectral domain.

    Abstract translation: 一种用于分析被建模为包含期望和不期望的部分（例如噪声，FM和AM调制）的两个测量信号的方法和装置。 系数根据根据本发明定义的模型关联两个信号。 在一个实施例中，使用变换来评估两个测量信号的比率以找到适当的系数。 然后将测量的信号馈送到信号洗涤器中，该信号洗涤器使用系数去除不需要的部分。 信号擦除在时域或频域中进行。 该方法和装置对于血氧饱和度测量和脉动测量是特别有利的。 在另一个实施例中，通过将一组规则应用于经擦除的信号的频谱变换来获得脉冲发生器的估计。 在另一个实施例中，通过将擦除的信号从第一光谱域变换成第二光谱域来获得脉冲发生器的估计。 通过识别第二个光谱域中最大的光谱峰值来发现脉冲发生器。

    Signal processing apparatus and method
    23.
    发明授权
    Signal processing apparatus and method 失效

    公开(公告)号：US6067462A

    公开(公告)日：2000-05-23

    申请号：US081539

    申请日：1998-05-19

    Applicant: Mohamed K. Diab ,  Rex McCarthy

    Inventor： Mohamed K. Diab ,  Rex McCarthy

    IPC: A61B5/00 ,  A61B5/02 ,  A61B5/024 ,  A61B5/04

    CPC classification number: A61B5/14552 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/14551 ,  A61B5/7203 ,  A61B5/7214 ,  G06K9/0051 ,  A61B5/02433 ,  A61B5/1455 ,  A61B5/7257 ,  A61B5/726

    Abstract: A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain. The pulserate is found by identifying the largest spectral peak in the second spectral domain.

    Photoplethysmographics using component-amplitude-division multiplexing
    24.
    发明授权
    Photoplethysmographics using component-amplitude-division multiplexing 失效
    Photoplethysmographics使用分量幅度复用

    公开(公告)号：US5349953A

    公开(公告)日：1994-09-27

    申请号：US665595

    申请日：1991-03-05

    Applicant: Rex McCarthy ,  Robert Smith

    Inventor： Rex McCarthy ,  Robert Smith

    IPC: A61B5/00

    CPC classification number: A61B5/417 ,  A61B5/1455

    Abstract: A plurality of carrier signals, distinguishable by amplitudes of signal components (e.g., frequency components), are respectively applied to a plurality of energy emitters (e.g., infrared and red light emitters). A detector receives the sum of the energy after modulation at each emitter wavelength, e.g. by blood tissue of a patient. An output of the detector is then demultiplexed, whereby a component of modulation at each emitter wavelength may be determined. The carrier signals may comprise time-varying periodic signals with identical frequency and frequency components, such as mixtures of identical sets of pure sine waves. When the number of signal components exceeds the number of emitter wavelengths, sufficient information is provided during demultiplexing to detect and correct errors introduced by ambient light sources and other interference.

    Abstract translation: 分别由多个能量发射器（例如红外和红光发射器）施加可由信号分量的幅度（例如，频率分量）区分的多个载波信号。 检测器在每个发射波长处接收调制后的能量之和，例如， 通过患者的血液组织。 然后将检测器的输出解复用，从而可以确定每个发射波长处的调制分量。 载波信号可以包括具有相同频率和频率分量的时变周期信号，例如同一组纯正弦波的混合。 当信号分量的数量超过发射波长数时，在解复用期间提供足够的信息来检测和纠正环境光源引入的误差和其他干扰。

    Signal processing apparatus and method
    25.
    发明授权
    Signal processing apparatus and method 有权

    公开(公告)号：US07499741B2

    公开(公告)日：2009-03-03

    申请号：US10839276

    申请日：2004-05-04

    Applicant: Mohamed K. Diab ,  Rex McCarthy

    Inventor： Mohamed K. Diab ,  Rex McCarthy

    IPC: A61B5/1455 ,  A61B5/024

    CPC classification number: A61B5/7257 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/02433 ,  A61B5/1455 ,  A61B5/14551 ,  A61B5/14552 ,  A61B5/6826 ,  A61B5/7203 ,  A61B5/7214 ,  A61B5/7225 ,  A61B5/726 ,  A61B5/7278 ,  A61B5/742 ,  G06K9/0051

    Abstract: A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain. The pulserate is found by identifying the largest spectral peak in the second spectral domain.

    SIGNAL PROCESSING APPARATUS AND METHOD
    26.
    发明申请
    SIGNAL PROCESSING APPARATUS AND METHOD 有权
    信号处理装置和方法

    公开(公告)号：US20080036752A1

    公开(公告)日：2008-02-14

    申请号：US11842128

    申请日：2007-08-20

    Applicant: Mohamed Diab ,  Rex McCarthy

    Inventor： Mohamed Diab ,  Rex McCarthy

    IPC: G09G5/00

    CPC classification number: A61B5/7257 ,  A61B5/0205 ,  A61B5/02416 ,  A61B5/02433 ,  A61B5/1455 ,  A61B5/14551 ,  A61B5/14552 ,  A61B5/6826 ,  A61B5/7203 ,  A61B5/7214 ,  A61B5/7225 ,  A61B5/726 ,  A61B5/7278 ,  A61B5/742 ,  G06K9/0051

    Abstract: A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain. The pulserate is found by identifying the largest spectral peak in the second spectral domain.

    Abstract translation: 一种用于分析被建模为包含期望和不期望的部分（例如噪声，FM和AM调制）的两个测量信号的方法和装置。 系数根据根据本发明定义的模型关联两个信号。 在一个实施例中，使用变换来评估两个测量信号的比率以找到适当的系数。 然后将测量的信号馈送到信号洗涤器中，该信号洗涤器使用系数去除不需要的部分。 信号擦除在时域或频域中进行。 该方法和装置对于血氧饱和度测量和脉动测量是特别有利的。 在另一个实施例中，通过将一组规则应用于经擦除的信号的频谱变换来获得脉冲发生器的估计。 在另一个实施例中，通过将擦除的信号从第一光谱域变换成第二光谱域来获得脉冲发生器的估计。 通过识别第二个光谱域中最大的光谱峰值来发现脉冲发生器。

    Non-invasive oximeter and method
    29.
    发明授权
    Non-invasive oximeter and method 失效
    非侵入性血氧计和方法

    公开(公告)号：US4824242A

    公开(公告)日：1989-04-25

    申请号：US912993

    申请日：1986-09-26

    Applicant: Gene Frick ,  Rex McCarthy

    Inventor： Gene Frick ,  Rex McCarthy

    IPC: A61B5/00 ,  G01N21/31 ,  G01N33/49 ,  G01N21/35

    CPC classification number: A61B5/14551 ,  G01N21/3151 ,  G01N2021/3144 ,  G01N2021/3181

    Abstract: The present invention relates to an oximeter for monitoring oxygen saturation of arterial blood. Light of two wavelengths is transmitted through a specimen. Detectors measure the attenuation of light through the specimen to produce two modulating data streams. The data streams are thereafter processed, evaluated, and compared to determine oxygen saturation. A novel method to process, evaluate and compare the two data streams is disclosed.

    Abstract translation: 本发明涉及一种用于监测动脉血氧饱和度的血氧计。 两个波长的光透过一个样本。 检测器通过样本测量光的衰减，产生两个调制数据流。 之后处理，评估和比较数据流以确定氧饱和度。 公开了一种处理，评估和比较两个数据流的新方法。

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