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    • 106. 发明授权
    • Card reading device having a multi-functional connector
    • 具有多功能连接器的读卡装置
    • US06681991B1
    • 2004-01-27
    • US10201900
    • 2002-07-25
    • Ming Li
    • Ming Li
    • G06K700
    • G06K7/0052
    • A card reading device includes a multi-functional connector capable of connecting to one of a variety of portable electronic devices and a control circuit of the card reading device respectively, wherein the control circuit has a detection circuit. Once a portable electronic device is connected to the cad reading device, the detection circuit is automatically activated to detect an identification (ID) of the electronic device. In response, one of second drivers is activated to drive the electronic device for electrically connecting the electronic device and reading data from the memory cards connected thereto.
    • 卡读取装置包括能够分别连接到各种便携式电子设备中的一种和卡读取装置的控制电路的多功能连接器,其中控制电路具有检测电路。 一旦便携式电子设备连接到读卡器,检测电路就被自动激活,以检测电子设备的识别(ID)。 作为响应,第二驱动器中的一个被激活以驱动用于电连接电子设备的电子设备和从连接到其的存储卡读取数据。
    • 108. 发明授权
    • Selective intensity modulation of channels in a multiplexed optical communication system
    • 复用光通信系统中信道的选择性强度调制
    • US06529307B1
    • 2003-03-04
    • US09874474
    • 2001-06-04
    • Song PengMing Li
    • Song PengMing Li
    • G02F103
    • H04B10/2569H04B10/532
    • A method and apparatus for achieving dynamic intensity modulation of the channels in a wavelength-division multiplexed optical communication system is presented. Wavelengths are spatially separated into a plurality of channels, the polarization states of which are individually modulated. The channels can be combined or filtered by polarization states to achieve the desired intensity in the output signal. An exemplary embodiment includes at least a polarization modulator, a birefringent wedge, a lens, and a dispersive element (e.g., diffraction grating) arranged in various order. Each segment of the polarization modulator can be made to rotate the polarization direction of an incident channel by a specified angle. A half-wave plate may be inserted between the second dispersive element and the second birefringent wedge to eliminate polarization-dependent loss. Optionally, a parallel birefringent plate may be inserted after the second birefringent wedge to reduce polarization mode dispersion.
    • 提出了一种用于实现波分复用光通信系统中的信道的动态强度调制的方法和装置。 波长在空间上分成多个通道,其偏振状态被单独调制。 可以通过极化状态组合或滤波通道,以在输出信号中达到所需的强度。 示例性实施例至少包括以各种顺序布置的偏振调制器,双折射楔形,透镜和分散元件(例如,衍射光栅)。 可以使偏振调制器的每个段使入射通道的偏振方向旋转指定的角度。 可以在第二分散元件和第二双折射楔之间插入半波片,以消除偏振相关损耗。 可选地,可以在第二双折射楔之后插入平行双折射板以降低偏振模色散。
    • 109. 发明授权
    • Protection switch in a two-fiber optical channel shared protection ring
    • 保护开关在双光纤通道共享保护环
    • US06414765B1
    • 2002-07-02
    • US09799374
    • 2001-03-05
    • Ming LiMark SoulliereRichard Wagner
    • Ming LiMark SoulliereRichard Wagner
    • H04B1008
    • H04Q11/0062H04B10/032H04J14/0212H04J14/0283H04J14/0295H04Q2011/0081H04Q2011/0083H04Q2011/0092
    • A protection switch for use in a two-fiber optical channel shared protection ring is disclosed. It includes an electrical switching circuit coupled to an optical signal monitor. The electrical switching circuit includes modular switching fabrics that respond to fault condition alarms provided by the optical signal monitor. Each modular switching fabric is versatile in that it includes a ring switch mode responsive to the multi-wavelength channel failures, and a span switch mode responsive to the single wavelength channel failures. Because the switching fabric of the electrical switching circuit is comprised of the plurality of small modular switching fabrics, the possibility of incurring a single-point switching failure in the switching fabric is virtually eliminated. Further, each modular switching fabric can be easily replaced in the event of failure, without affecting the operation of other switch fabrics within the protection switch.
    • 公开了一种用于双光纤通道共享保护环的保护开关。 它包括耦合到光信号监视器的电开关电路。 电气开关电路包括响应由光信号监视器提供的故障状况报警的模块化交换结构。 每个模块化交换结构都是通用的,因为它包括响应于多波长信道故障的环形开关模式,以及响应单波长通道故障的量程开关模式。 由于电切换电路的交换结构由多个小型模块化交换结构组成,所以实际上消除了在交换结构中导致单点切换故障的可能性。 此外,每个模块化交换结构可以在发生故障的情况下容易地更换,而不会影响保护交换机内其他交换结构的操作。
    • 110. 发明授权
    • Free-space time-domain method for measuring thin film dielectric
properties
    • 用于测量薄膜介电性质的自由空间时域法
    • US6057928A
    • 2000-05-02
    • US333596
    • 1999-06-15
    • Ming LiXi-Cheng ZhangGyu Cheon Cho
    • Ming LiXi-Cheng ZhangGyu Cheon Cho
    • G01N21/35G01N21/41G01N21/55
    • G01N21/41G01N21/3563G01N21/3586
    • A non-contact method for determining the index of refraction or dielectric constant of a thin film on a substrate at a desired frequency in the GHz to THz range having a corresponding wavelength larger than the thickness of the thin film (which may be only a few microns). The method comprises impinging the desired-frequency beam in free space upon the thin film on the substrate and measuring the measured phase change and the measured field reflectance from the reflected beam for a plurality of incident angles over a range of angles that includes the Brewster's angle for the thin film. The index of refraction for the thin film is determined by applying Fresnel equations to iteratively calculate a calculated phase change and a calculated field reflectance at each of the plurality of incident angles, and selecting the index of refraction that provides the best mathematical curve fit with both the dataset of measured phase changes and the dataset of measured field reflectances for each incident angle. The dielectric constant for the thin film can be calculated as the index of refraction squared.
    • 一种非接触式方法,用于在GHz至THz范围内以期望的频率确定衬底上的薄膜的折射率或介电常数,其具有大于薄膜厚度的相应波长(其可能仅为少数几个 微米)。 该方法包括将自由空间中的期望频率光束照射到衬底上的薄膜上,并且在包括布鲁斯特角度的角度范围内测量测量的相位变化和来自反射光束的多个入射角的测量的场反射率 为薄膜。 通过应用菲涅尔方程来迭代地计算多个入射角中的每一个处的相位变化和计算的场​​反射率来确定薄膜的折射率,并且选择提供最佳数学曲线拟合的折射率 测量相位变化的数据集和每个入射角的测量场反射数据集。 可以计算薄膜的介电常数作为折射率平方。