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    • 5. 发明申请
    • DIGITAL POTENTIOMETER SYSTEM
    • 数字电位计系统
    • US20090134927A1
    • 2009-05-28
    • US11946614
    • 2007-11-28
    • Robert J. ThomasMichael L. Underhill
    • Robert J. ThomasMichael L. Underhill
    • H03L5/00
    • H03H19/008H03H11/24
    • A system or circuit for simulating a potentiometer, thermistor, or the like. A pulse stream, having a duty cycle which is varied as a changing pulse width or as a differing number of time slices per time period, may be input to the system. The pulse stream to a transistor or switch-like mechanism may allow a controlled connection of a fixed value resistor to a reference voltage or ground to provide various resultant values of impedance or resistance. A measuring circuit connected to the output of the system may determine a value which is of the fixed value resistor divided by the duty cycle of the pulse train effectively controlling the connection of the resistor to ground. One or more additional circuits may be connected in parallel to achieve greater accuracy.
    • 用于模拟电位计,热敏电阻等的系统或电路。 可以向系统输入具有作为变化的脉冲宽度或每个时间段的不同数量的时间片而变化的占空比的脉冲流。 到晶体管或类似开关的机构的脉冲流可以允许固定值电阻器与参考电压或接地的受控连接,以提供阻抗或电阻的各种结果值。 连接到系统的输出的测量电路可以确定固定值电阻器的值除以脉冲串的占空比,有效地控制电阻器与地的连接。 一个或多个附加电路可以并联连接以实现更高的精度。
    • 6. 发明授权
    • Assessment of sleep quality and sleep disordered breathing based on cardiopulmonary coupling
    • 基于心肺耦合评估睡眠质量和睡眠呼吸障碍
    • US07324845B2
    • 2008-01-29
    • US10846945
    • 2004-05-17
    • Joseph E. MietusChung-Kang PengRobert J. ThomasAry L. Goldberger
    • Joseph E. MietusChung-Kang PengRobert J. ThomasAry L. Goldberger
    • A61B5/04
    • A61B5/0456A61B5/0205A61B5/0476A61B5/0496A61B5/0816A61B5/4815A61B5/4818A61B5/7257A61B5/7278
    • An assessment of sleep quality and sleep disordered breathing is determined from the cardiopulmonary coupling between two physiological data series. In an embodiment, an R-R interval series is derived from an electrocardiogram (ECG) signal. The normal beats from the R-R interval series are extracted to produce a normal-to-normal (NN) interval series. The amplitude variations in the QRS complex are used to extract to a surrogate respiration signal (i.e., ECG-derived respiration (EDR)) that is associated with the NN interval series. The two series are corrected to remove outliers, and resampled. The cross-spectral power and coherence of the two resampled signals are calculated over a plurality of coherence windows. For each coherence window, the product of the coherence and cross-spectral power is used to calculate coherent cross power. Using the appropriate thresholds for the coherent cross power, the proportion of sleep spent in CAP, non-CAP, and wake and/or REM are determined.
    • 睡眠质量和睡眠呼吸紊乱的评估是从两个生理数据序列之间的心肺耦合确定的。 在一个实施例中,从心电图(ECG)信号导出R-R间期序列。 提取R-R间隔序列中的正常搏动以产生正常到正常(NN)间隔序列。 QRS复合物中的幅度变化用于提取与NN间期序列相关联的替代呼吸信号(即,ECG导出的呼吸(EDR))。 纠正这两个系列以消除异常值,并重新采样。 在多个相干窗口上计算两个重采样信号的交叉光谱功率和相干性。 对于每个相干窗口,使用相干和交叉光谱功率的乘积来计算相干交叉功率。 使用相关交叉功率的适当阈值,确定在CAP,非CAP和唤醒和/或REM中花费的睡眠比例。
    • 9. 发明授权
    • Three-dimensional flexible reflectors
    • 三维柔性反射镜
    • US4815818A
    • 1989-03-28
    • US822857
    • 1986-01-27
    • Robert J. Thomas
    • Robert J. Thomas
    • E01F9/03E01F9/04E01F9/047E01F15/14G02B5/132G02B5/122E01F9/00
    • G02B5/132E01F9/524E01F9/529E01F9/619E01F9/669
    • A reflector is provided which includes a resilient member formed of elastomeric material having embedded in at least a portion thereof a plurality of retro-reflective glass beads. At least a portion of the outer surface of the elastomeric material is removed to expose at least a portion of the glass beads thereat. The resilient member can be formed either with or without a base member. The base member can be formed either integrally or non-integrally with the resilient member to serve as a support body for the resilient member. When formed with a base member, at least the distal end of the resilient member has a surface portion of the elastomeric material forming the resilient member removed to expose at least a portion of the glass beads thereat.
    • 提供了一种反射器,其包括由弹性体材料形成的弹性构件,该弹性构件的至少一部分嵌入多个后向反射玻璃珠。 去除弹性体材料的外表面的至少一部分以暴露其中的至少一部分玻璃珠。 弹性构件可以具有或不具有基底构件。 基部构件可以与弹性构件一体地或非整体地形成,以用作弹性构件的支撑体。 当形成有基部构件时,至少弹性构件的远端具有形成弹性构件的弹性体材料的表面部分,以去除玻璃珠的至少一部分。