知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

74 条记录 (耗时 0.055 秒)

    Signal processing apparatus
    4.
    发明授权
    Signal processing apparatus 失效
    信号处理装置

    公开(公告)号：US07469157B2

    公开(公告)日：2008-12-23

    申请号：US10779033

    申请日：2004-02-13

    申请人： Mohamed K. Diab ,  Esmaiel Kiani-Azarbayjany ,  Walter M. Weber

    发明人： Mohamed K. Diab ,  Esmaiel Kiani-Azarbayjany ,  Walter M. Weber

    IPC分类号： A61B5/1455

    CPC分类号： G06K9/0051 ,  A61B5/14551 ,  A61B5/7214 ,  A61B5/726 ,  H04B1/123

    摘要： A signal processor which acquires a first signal, including a first primary signal portion and a first secondary signal portion, and a second signal, including a second primary signal portion and a second secondary signal portion, wherein the first and second primary signal portions are correlated. The signals may be acquired by propagating energy through a medium and measuring an attenuated signal after transmission or reflection. Alternatively, the signals may be acquired by measuring energy generated by the medium. A processor of the present invention generates a primary or secondary reference signal which is a combination, respectively, of only the primary or secondary signal portions. The secondary reference signal is then used to remove the secondary portion of each of the first and second measured signals via a correlation canceler, such as an adaptive noise canceler, preferably of the joint process estimator type. The primary reference signal is used to remove the primary portion of each of the first and second measured signals via a correlation canceler. The processor of the present invention may be employed in conjunction with a correlation canceler in physiological monitors wherein the known properties of energy attenuation through a medium are used to determine physiological characteristics of the medium. Many physiological conditions, such as the pulse, or blood pressure of a patient or the concentration of a constituent in a medium, can be determined from the primary or secondary portions of the signal after other signal portion is removed.

    摘要翻译： 一种信号处理器，其获取包括第一主信号部分和第一辅助信号部分的第一信号和包括第二主信号部分和第二辅信号部分的第二信号，其中第一和第二主信号部分相关 。 信号可以通过传播能量通过介质并在透射或反射之后测量衰减信号来获取。 或者，可以通过测量由介质产生的能量来获取信号。 本发明的处理器分别产生主要或次要参考信号，其仅是主要信号部分或次要信号部分的组合。 然后，辅助参考信号用于经由相关消除器（例如自适应噪声消除器）去除第一和第二测量信号中的每一个的次级部分，优选地是联合过程估计器类型。 主要参考信号用于通过相关消除器去除第一和第二测量信号中的每一个的主要部分。 本发明的处理器可以与生理监视器中的相关消除器一起使用，其中通过介质的能量衰减的已知特性用于确定介质的生理特性。 可以从消除其他信号部分之后的信号的主要部分或次要部分确定许多生理条件，例如患者的脉搏或血压或培养基中成分的浓度。

    Active pulse blood constituent monitoring
    7.
    发明申请
    Active pulse blood constituent monitoring 有权
    有源脉搏血液成分监测

    公开(公告)号：US20050272987A1

    公开(公告)日：2005-12-08

    申请号：US11204585

    申请日：2005-08-16

    申请人： Esmaiel Kiani-Azarbayjany ,  Mohamed Diab ,  James Lepper

    发明人： Esmaiel Kiani-Azarbayjany ,  Mohamed Diab ,  James Lepper

    IPC分类号： A61B5/00 ,  E02B11/00

    CPC分类号： E02B11/005 ,  Y10S248/903

    摘要： A blood constituent monitoring method for inducing an active pulse in the blood volume of a patient. The induction of an active pulse results in a cyclic, and periodic change in the flow of blood through a fleshy medium under test. By actively inducing a change of the blood volume, modulation of the volume of blood can be obtained to provide a greater signal to noise ratio. This allows for the detection of constituents in blood at concentration levels below those previously detectable in a non-invasive system. Radiation which passes through the fleshy medium is detected by a detector which generates a signal indicative of the intensity of the detected radiation. Signal processing is performed on the electrical signal to isolate those optical characteristics of the electrical signal due to the optical characteristics of the blood.

    摘要翻译： 一种用于在患者的血液体积中诱导活性脉冲的血液成分监测方法。 活性脉冲的诱导导致血液通过待测肉质培养基的循环和周期性变化。 通过积极地引起血液量的变化，可以获得血液体积的调节以提供更大的信噪比。 这允许以非侵入性系统中先前可检测的浓度水平检测血液中的成分。 通过肉质培养基的辐射由产生指示检测到的辐射强度的信号的检测器检测。 对电信号执行信号处理，以隔离由于血液的光学特性引起的电信号的这些光学特性。

    Signal processing apparatus and method
    10.
    发明授权
    Signal processing apparatus and method 失效
    信号处理装置及方法

    公开(公告)号：US06206830B1

    公开(公告)日：2001-03-27

    申请号：US09441736

    申请日：1999-11-17

    申请人： Mohamed Kheir Diab ,  Esmaiel Kiani-Azarbayjany

    发明人： Mohamed Kheir Diab ,  Esmaiel Kiani-Azarbayjany

    IPC分类号： A61B502

    CPC分类号： G06K9/0051 ,  A61B5/14551 ,  A61B5/7214 ,  A61B5/7228 ,  H04B1/123

    摘要： A signal processor which acquires a first signal, including a first desired signal portion and a first undesired signal portion, and a second signal, including a second desired signal portion and a second undesired signal portion, wherein the first and second desired signal portions are correlated. The signals may be acquired by propagating energy through a sodium and measuring an attenuated signal after transmission or reflection. Alternatively, the signals may be acquired by measuring energy generated by the medium. A processor of the present invention generates a noise reference signal which is a combination of only the undesired signal portions and is correlated to both the first and second undesired signal portions. The noise reference signal is then used to remove the undesired portion of each of the first and second measured signals via an adaptive noise canceler, preferably of the joint process estimator type. The processor of the present invention may be employed in conjunction with an adaptive noise canceler in physiological monitors wherein the known properties of energy attenuation through a medium are used to determine physiological characteristics of the medium. Many physiological conditions, such as the pulse of a patient or the concentration of a constituent in a medium, can be determined from the desired portion of the signal after undesired signal portions, such as those caused by erratic notion, are removed.

    摘要翻译： 一种信号处理器，其获取包括第一期望信号部分和第一不期望信号部分的第一信号，以及包括第二期望信号部分和第二非期望信号部分的第二信号，其中所述第一和第二期望信号部分相关 。 可以通过传播能量通过钠并在透射或反射之后测量衰减的信号来获取信号。 或者，可以通过测量由介质产生的能量来获取信号。 本发明的处理器产生噪声参考信号，噪声参考信号是仅有不需要的信号部分的组合，并且与第一和第二不期望信号部分相关。 然后，噪声参考信号用于经由自适应噪声消除器，优选地由联合过程估计器类型去除第一和第二测量信号中每一个的不希望的部分。 本发明的处理器可以与生理监视器中的自适应噪声消除器一起使用，其中通过介质的能量衰减的已知特性用于确定介质的生理特性。 可以从去除不期望的信号部分（例如由不规则的概念引起的那些）之后的信号的期望部分确定许多生理条件，例如患者的脉搏或介质中成分的浓度。