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    • 5. 发明授权
    • Providing thermal compensation for topographic measurement at an elevated temperature using a non-contact vibration transducer
    • 使用非接触式振动传感器,在高温下提供对地形测量的热补偿
    • US08705050B2
    • 2014-04-22
    • US12898783
    • 2010-10-06
    • Arvind K. Sinha
    • Arvind K. Sinha
    • G01B11/30
    • G01B11/24
    • A mechanism for providing thermal compensation when measuring surface topography at an elevated temperature using a non-contact vibration transducer, such as a laser Doppler vibrometer (LDV). Thermal compensation is provided to a detector output signal to correct for thermal diffraction of a reflected portion of a beam of radiant energy directed at a surface of a test object. The thermal compensation is based on a calculated deviation between the detector output signal r2 at an elevated temperature and the detector output signal r1 at approximately room temperature. In one embodiment, the thermal compensation mechanism calculates a stationary signal r3(t) which represents the detector output signal without noise and corrected for thermal diffraction at the elevated temperature according to the following equation: r 3 ⁡ ( t ) = lim T → ∞ ⁢ 1 / T ⁢ ∫ - t / 2 + t / 2 ⁢ r 2 * ⁡ ( t ) * r 2 * ⁡ ( t + Δ ⁢ ⁢ t ) ⁢ ⁢ ⅆ t , wherein T represents the total number of spectrums measured at the elevated temperature at multiple times upon which the compensation is based, and wherein r2*=r2−r2(baseline).
    • 使用诸如激光多普勒振动计(LDV)的非接触式振动传感器在高温测量表面形貌时提供热补偿的机构。 将热补偿提供给检测器输出信号,以校正指向测试对象表面的辐射能束的反射部分的热衍射。 热补偿基于在升高的温度下的检测器输出信号r2与大约室温下的检测器输出信号r1之间的计算偏差。 在一个实施例中,热补偿机构根据以下等式计算表示无噪声的检测器输出信号的稳定信号r3(t),并根据以下等式对升高的温度下的热衍射进行校正:r 3⁡(t)= lim T→∞ 1 /T∫-t / 2 + t / 2r 2 *⁡(t)* r 2 *⁡(t +&Dgr;⁢t)⁢ⅆt,其中T表示测量的光谱总数 在补偿所基于的多次的高温下,其中r2 * = r2-r2(基线)。
    • 9. 发明申请
    • Providing Thermal Compensation for Topographic Measurement at an Elevated Temperature Using a Non-Contact Vibration Transducer
    • 使用非接触式振动传感器在高温下提供用于地形测量的热补偿
    • US20120086952A1
    • 2012-04-12
    • US12898783
    • 2010-10-06
    • Arvind K. Sinha
    • Arvind K. Sinha
    • G01B11/24
    • G01B11/24
    • A mechanism for providing thermal compensation when measuring surface topography at an elevated temperature using a non-contact vibration transducer, such as a laser Doppler vibrometer (LDV). Thermal compensation is provided to a detector output signal to correct for thermal diffraction of a reflected portion of a beam of radiant energy directed at a surface of a test object. The thermal compensation is based on a calculated deviation between the detector output signal r2 at an elevated temperature and the detector output signal r1 at approximately room temperature. In one embodiment, the thermal compensation mechanism calculates a stationary signal r3 (t) which represents the detector output signal without noise and corrected for thermal diffraction at the elevated temperature according to the following equation: r 3  ( t ) = lim T → ∞  1 / T  ∫ - t / 2 + t / 2  r 2 *  ( t ) * r 2 *  ( t + Δ   t )    t , wherein T represents the total number of spectrums measured at the elevated temperature at multiple times upon which the compensation is based, and wherein r2*=r2−r2 (baseline).
    • 使用诸如激光多普勒振动计(LDV)的非接触式振动传感器在高温测量表面形貌时提供热补偿的机构。 将热补偿提供给检测器输出信号,以校正指向测试对象表面的辐射能束的反射部分的热衍射。 热补偿基于在升高的温度下的检测器输出信号r2与大约室温下的检测器输出信号r1之间的计算偏差。 在一个实施例中,热补偿机构根据以下等式计算表示无噪声的检测器输出信号的稳定信号r3(t),并根据以下等式对高温下的热衍射进行校正:r 3(t)= lim T→∞ 其中T表示测量的光谱总数,其中T表示测量的光谱总数,其中T表示测量的光谱总数 在补偿所基于的多次的高温下,其中r2 * = r2-r2(基线)。
    • 10. 发明申请
    • Motherboard Assembly for Interconnecting and Distributing Signals and Power
    • 用于互连和分配信号和电源的主板组件
    • US20110085313A1
    • 2011-04-14
    • US12579051
    • 2009-10-14
    • John L. ColbertArvind K. SinhaRoger D. Weekly
    • John L. ColbertArvind K. SinhaRoger D. Weekly
    • H05K1/11G06F17/50
    • H05K1/144G11C5/025H05K1/113H05K1/114H05K1/141H05K3/0058H05K3/325H05K2201/044H05K2201/10378H05K2201/10545H05K2201/10719H05K2201/2009
    • A system, method, and motherboard assembly are described for interconnecting and distributing signals and power between co-planar boards that function as a single motherboard. The motherboard assembly includes a multilayered first printed circuit board having opposed parallel first and second surfaces, each having at least one land grid array (LGA) disposed thereon. The assembly further includes at least one wiring layer (Y) designed to only electrically interconnect components on or within the first PCB, and at least one wiring layer (X) designed to only electrically connect the components on the first PCB to a multilayered second PCB. The multilayered second PCB has opposed parallel first and second surfaces, the first surface having at least one LGA disposed thereon. It further includes at least one wiring layer (V) designed to only electrically interconnect components on or within the second PCB, and at least one layer (X) designed to only electrically interconnect the components on the second PCB with the components on the first PCB. A first LGA interposer couples to the LGA disposed on the first surface of the first PCB, and electrically connects at least one component to the first PCB. A second LGA interposer is sandwiched between and couples to the LGA disposed on the second surface of the first PCB and to the LGA disposed on the first surface of the second PCB. It electrically connects the first PCB to components on the second PCB.
    • 描述了用于在用作单个主板的共面板之间互连和分配信号和功率的系统,方法和主板组件。 主板组件包括具有相对的平行的第一和第二表面的多层第一印刷电路板,每个具有设置在其上的至少一个焊盘格栅阵列(LGA)。 组件还包括至少一个布线层(Y),其被设计成仅电连接第一PCB上或其内部的部件,以及至少一个布线层(X),其设计成仅将第一PCB上的部件电连接到多层第二PCB 。 所述多层第二PCB具有相对的平行的第一和第二表面,所述第一表面具有设置在其上的至少一个LGA。 它还包括至少一个被设计成仅电连接第二PCB上或第二PCB内的组件的布线层(V),以及设计成仅将第二PCB上的部件与第一PCB上的部件电互连的至少一个层(X) 。 第一LGA插入器耦合到布置在第一PCB的第一表面上的LGA,并且将至少一个部件电连接到第一PCB。 第二LGA插入件夹在布置在第一PCB的第二表面上的LGA之间并耦合到布置在第二PCB的第一表面上的LGA。 它将第一个PCB电连接到第二个PCB上的组件。