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18 条记录 (耗时 0.028 秒)

    PORTABLE AUDIO SYSTEM HAVING WAVEGUIDE STRUCTURE
    4.
    发明申请
    PORTABLE AUDIO SYSTEM HAVING WAVEGUIDE STRUCTURE 有权
    具有波形结构的便携式音响系统

    公开(公告)号：US20110150259A1

    公开(公告)日：2011-06-23

    申请号：US13033893

    申请日：2011-02-24

    申请人： Robert Preston Parker ,  Roman Litovsky ,  Jacky Chi-Hung Chan ,  Todd Charter Brown ,  Lino A. Pucci

    发明人： Robert Preston Parker ,  Roman Litovsky ,  Jacky Chi-Hung Chan ,  Todd Charter Brown ,  Lino A. Pucci

    IPC分类号： H04R1/20

    CPC分类号： H04R1/02 ,  G06F3/165 ,  H03G3/02 ,  H04R1/2857 ,  H04R2205/021 ,  H04R2430/01

    摘要： An apparatus includes a housing. A waveguide is located within the housing. The waveguide includes a first subsection that bends around a first axis and has a first cross-sectional area with an aspect ratio that is substantially different from unity. A second subsection bends around a second axis that is non-parallel to the first axis and includes a second cross-sectional area with an aspect ratio that is substantially different from unity. A third subsection acoustically couples the first subsection to the second subsection. The third subsection includes a third cross-sectional area with an aspect ratio that varies between the first aspect ratio and the second aspect ratio.

    摘要翻译： 一种装置包括壳体。 波导位于壳体内。 波导包括第一子部分，该第一子部分围绕第一轴线弯曲并且具有第一横截面积，纵横比基本上不同于单位。 第二部分围绕不平行于第一轴线的第二轴线弯曲并且包括具有与单位基本不同的纵横比的第二横截面区域。 第三部分将第一部分声学地耦合到第二部分。 第三子部分包括具有在第一纵横比和第二纵横比之间变化的纵横比的第三横截面区域。

    PASSIVE ACOUSTICAL RADIATING
    5.
    发明申请
    PASSIVE ACOUSTICAL RADIATING 审中-公开
    无源声学雷达

    公开(公告)号：US20070092096A1

    公开(公告)日：2007-04-26

    申请号：US11562480

    申请日：2006-11-22

    申请人： Roman Litovsky

    发明人： Roman Litovsky

    IPC分类号： H04R25/00

    CPC分类号： H04R1/2834 ,  H04R1/227 ,  H04R1/2873 ,  H04R2209/027 ,  H04S1/002

    摘要： An audio device has passive radiators that are driven by acoustic drivers. The passive radiators are arranged so that the net mechanical vibration is minimized.

    摘要翻译： 音频设备具有由声学驱动器驱动的无源辐射器。 无源辐射器被布置成使得机械振动的网络最小化。

    Controlling a power converter
    7.
    发明授权
    Controlling a power converter 有权
    控制电源转换器

    公开(公告)号：US07880330B2

    公开(公告)日：2011-02-01

    申请号：US11771785

    申请日：2007-06-29

    申请人： Roman Litovsky ,  Hal P. Greenberger

    发明人： Roman Litovsky ,  Hal P. Greenberger

    IPC分类号： H02J1/12 ,  H02J3/00 ,  H02J5/00 ,  H03K19/00

    CPC分类号： H02M3/155 ,  H02J7/345 ,  H02M3/156 ,  H02M2001/0019 ,  Y10T307/511 ,  Y10T307/516

    摘要： A load is powered by a power source and a capacitive element in series such that the voltage provided to the load is the sum of the voltages of the power source and the capacitive element. A power converter imposing a limit on a flow of current through at least a portion of the power converter is coupled to the power source and the capacitive element, and selectively causes the capacitive element to either be charged or to discharge depending on the amount of current drawn by the load. As the capacitor discharges, the power source is permitted to supply a relatively higher amount of current to the load.

    摘要翻译： 负载由电源和串联的电容元件供电，使得提供给负载的电压是电源和电容元件的电压之和。 对通过功率转换器的至少一部分的电流流限制的功率转换器耦合到电源和电容元件，并且根据电流量选择性地使电容元件充电或放电 由负载绘制。 当电容器放电时，允许电源向负载提供相对较大量的电流。

    Contactless testing of electronic materials and devices using microwaves
    9.
    发明授权
    Contactless testing of electronic materials and devices using microwaves 失效
    使用微波的电子材料和器件的非接触式测试

    公开(公告)号：US5417494A

    公开(公告)日：1995-05-23

    申请号：US877468

    申请日：1992-05-01

    申请人： Krzysztof Kempa ,  Roman Litovsky

    发明人： Krzysztof Kempa ,  Roman Litovsky

    IPC分类号： G01N25/72

    CPC分类号： G01N25/72

    摘要： A method and system for probing a volume of material by detecting local conductivity in the material using microwave radiation. The probed volume of material is exposed to microwave radiation of a wavelength selected to excite the carriers of electrical current and induce localized heating in regions of the volume of material which is an electronic material or a device. A thermographic imaging system detects size and distribution of the locally heated regions, and a processing system determines a selected property of the material by analyzing the size and distribution of the locally heated regions. The thermographic imaging system can be an infra-red imaging system which detects infra-red radiation emitted from the locally heated region, or it can be a system which deposits a thermally sensitive film onto a surface of the material and detects thermally induced changes in the deposited film caused by the transferred heat. The testing system can be also used in conjunction with a light source to probe distribution of photoexcited carriers, or with an electronic testing system to examine local conductivity and performance of devices in an active or passive state.

    摘要翻译： 通过使用微波辐射检测材料中的局部电导率来探测材料体积的方法和系统。 材料的探测体积暴露于选定的波长的微波辐射以激发载流子的电流并且在作为电子材料或器件的材料体积的区域中引起局部加热。 热成像系统检测局部加热区域的尺寸和分布，并且处理系统通过分析局部加热区域的尺寸和分布来确定材料的选定性质。 热成像系统可以是红外成像系统，其检测从局部加热区域发射的红外辐射，或者其可以是将热敏膜沉积到材料的表面上并检测热诱导的变化 沉积膜由转移的热量引起。 测试系统还可以与光源一起使用以探测光激发载波的分布，或者与电子测试系统一起检查主动或被动状态的设备的局部电导率和性能。

    Controlling a Power Converter
    10.
    发明申请
    Controlling a Power Converter 有权
    控制电源转换器

    公开(公告)号：US20080048499A1

    公开(公告)日：2008-02-28

    申请号：US11771785

    申请日：2007-06-29

    申请人： Roman Litovsky ,  Hal Greenberger

    发明人： Roman Litovsky ,  Hal Greenberger

    IPC分类号： H02J1/12

    CPC分类号： H02M3/155 ,  H02J7/345 ,  H02M3/156 ,  H02M2001/0019 ,  Y10T307/511 ,  Y10T307/516

    摘要： A load is powered by a power source and a capacitive element in series such that the voltage provided to the load is the sum of the voltages of the power source and the capacitive element. A power converter imposing a limit on a flow of current through at least a portion of the power converter is coupled to the power source and the capacitive element, and selectively causes the capacitive element to either be charged or to discharge depending on the amount of current drawn by the load. As the capacitor discharges, the power source is permitted to supply a relatively higher amount of current to the load.

    摘要翻译： 负载由电源和串联的电容元件供电，使得提供给负载的电压是电源和电容元件的电压之和。 对通过功率转换器的至少一部分的电流流限制的功率转换器耦合到电源和电容元件，并且根据电流量选择性地使电容元件充电或放电 由负载绘制。 当电容器放电时，允许电源向负载提供相对较大量的电流。