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    • 33. 发明申请
    • A MULTI-TOUCH ULTRASONIC TOUCH SCREEN
    • 多触控超声波触屏
    • WO2014081721A1
    • 2014-05-30
    • PCT/US2013/070792
    • 2013-11-19
    • THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    • KHURI-YAKUB, Butrus, T.NIKOOZADEH, AminFIROUZI, Kamyar
    • G06F3/043
    • G06F3/0436G06F2203/04104
    • A multi-touch ultrasonic touchscreen is provided that includes a solid plate, an ultrasonic transducer disposed on an edge or surface of the solid plate that is capable of transmitting and receiving dispersive acoustic Lamb waves, and an appropriately programmed computer that is capable of operating the ultrasonic transducer to transmit and receive the dispersive acoustic Lamb waves, where the solid plate is capable of reflecting the transmitted dispersive acoustic Lamb waves internally and at edges and corners of the plate in a ubiquitous distribution within the solid plate, where the internal reflections include solid plate top and bottom surface reflections of the dispersive acoustic Lamb waves, where the edge and corner reflections are physical reflection to propagation of the dispersive acoustic Lamb waves, where the appropriately programmed computer is capable of operating on the received Lamb wave to determine an occurrence and location of a touch to the solid plate.
    • 提供一种多点触摸超声波触摸屏,其包括固体板,设置在能够发射和接收分散声音兰姆波的固体板的边缘或表面上的超声波换能器,以及能够操作 超声波换能器以发射和接收分散声Lamb波,其中固体板能够在固体板内的普遍存在的分布内在内部和在板的边缘和角部处反射透射的散射声Lamb波,其中内部反射包括固体 分散声Lamb波的板顶和底面反射,其中边缘和角部反射是对分散声Lamb波的传播的物理反射,其中适当编程的计算机能够对接收的Lamb波进行操作以确定发生,并且 触摸固体板的位置。
    • 35. 发明申请
    • A METHOD FOR CALIBRATION-FREE SCANNED-WAVELENGTH MODULATION SPECTROSCOPY FOR GAS SENSING
    • 用于气体感测的无校准扫描波长调制光谱的方法
    • WO2013096396A1
    • 2013-06-27
    • PCT/US2012/070523
    • 2012-12-19
    • THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    • HANSON, Ronald, K.JEFFRIES, Jay, B.SUN, KaiSUR, RitobrataCHAO, Xing
    • G01J3/433G01N21/39
    • G01N21/39G01J3/433G01J3/4338G01N33/0062G01N2201/12
    • A method of calibration-free scanned-wavelength modulation spectroscopy (WMS) absorption sensing is provided by obtaining absorption lineshape measurements of a gas sample on a sensor using l/-normalized WMS-2/j where an injection current to an injection current-tunable diode laser (TDL) is modulated at a frequency ^ where a wavelength modulation and an intensity modulation of the TDL are simultaneously generated, extracting using a numerical lock-in program and a low-pass filter appropriate bandwidth WMS-«/ (n=l, 2,...) signals, where the WMS-«/ signals are harmonics of the f, determining a p hysical property of the gas sample according to ratios of the WMS-«/ signals, determining the zero-absorption background using scanned-wavelength WMS, and determining non-absorption losses using at least two the harmonics, where a need for a non-absorption baseline measurement is removed from measurements in environments where collision broadening has blended transition linewidths, where calibration free WMS measurements without knowledge of the transition linewidth is enabled.
    • 通过使用标准化WMS-2 / j获得传感器上的气体样品的吸收线形状测量来提供无校准扫描波长调制光谱(WMS)吸收感测的方法,其中注入电流可调 二极管激光器(TDL)以频率^调制,其中同时产生TDL的波长调制和强度调制,使用数字锁定程序和低通滤波器适当带宽提取适当带宽WMS ,2,...)信号,其中WMS-«/信号是f的谐波,根据WMS-«/信号的比率确定气体样本的物理特性,使用扫描 - 波长WMS,并且使用至少两个谐波来确定非吸收损耗,其中在碰撞加宽已经混合了过渡线宽的环境中,从非吸收基线测量的需要中去除了测量结果,其中calib 启用了不需要过渡线宽知识的自由WMS测量。