Multipurpose sensor port
    7.
    发明申请
    Multipurpose sensor port 有权
    多功能传感器端口

    公开(公告)号:US20050075548A1

    公开(公告)日:2005-04-07

    申请号:US10898680

    申请日:2004-07-23

    Abstract: A sensor port is adapted to connect to either a sensor or a data source. A reader is configured to identify which of the sensor and the data source is connected to the sensor port. A data path is configured to communicate an analog signal associated with the sensor and digital data associated with the data source to a signal processor according to the identification made by the reader.

    Abstract translation: 传感器端口适于连接到传感器或数据源。 读取器被配置为识别传感器和数据源中的哪一个连接到传感器端口。 数据路径被配置为根据读取器所做的识别将与传感器相关联的模拟信号和与数据源相关联的数字数据传送到信号处理器。

    Photoplethysmographics using component-amplitude-division multiplexing
    10.
    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

    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。

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