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    • 3. 发明授权
    • Acoustic tracking system
    • 声学跟踪系统
    • US5410519A
    • 1995-04-25
    • US155950
    • 1993-11-19
    • John D. HallBruce GordonClarence E. Miller
    • John D. HallBruce GordonClarence E. Miller
    • G01S3/808G01S5/28G01S11/14G01S3/80
    • G01S3/8083G01S11/14G01S5/28
    • An acoustic tracking system designed to allow scientists and fishermen to follow dolphins and whales without harming or harassing them. The system utilizes six flow shielded hydrophones mounted on the bottom of a vessel in two arrays of three hydrophones in each array. Acoustic signals of interest (dolphin calls) which strike the hydrophone piezo-electric elements are transmitted to a receiver-display device which determines and displays both the bearing to the signal of interest and the relative range from the vessel to that signal. The receiver-display device utilizes digital microprocessors to determine the difference in signal arrival time of an incoming signal at pairs of hydrophones. The resulting computed bearing to the dolphin call is displayed as a lighted indicator on an electronic heading display. In addition, the digital microprocessors compare the received sound pressure level of incoming signals of interest and display the relative range as a series of lighted LED's on the electronic heading indicator.
    • 一种声学跟踪系统,旨在允许科学家和渔民跟随海豚和鲸鱼,而不会伤害或骚扰他们。 该系统在每个阵列中使用安装在容器底部的六个流动屏蔽水听器,其具有三个水听器的两个阵列。 撞击水听器压电元件的感兴趣的声信号(海豚呼叫)被传送到接收机显示设备,该接收器显示设备确定并显示所关注的信号和从容器到该信号的相对范围。 接收器显示装置利用数字微处理器来确定输入信号在水听器对处的信号到达时间的差异。 所得到的计算的对海豚呼叫的承载在电子航标显示器上显示为点亮的指示符。 此外,数字微处理器将感兴趣的输入信号的接收声压级进行比较,并将相对范围显示为电子航标指示灯上的一系列点亮的LED。
    • 7. 发明授权
    • System and method for obtaining a volume of influence based on non-uniform tissue conductivity data
    • 基于非均匀组织电导率数据获得影响体积的系统和方法
    • US07680526B2
    • 2010-03-16
    • US12008760
    • 2008-01-14
    • Cameron C. McIntyreChristopher R. ButsonJohn D. HallJaimie M. Henderson
    • Cameron C. McIntyreChristopher R. ButsonJohn D. HallJaimie M. Henderson
    • G06T17/20
    • G06F19/3437A61B90/37A61B2090/364A61N1/0534A61N1/0539A61N1/36082A61N1/36135A61N1/36146G06F19/00G06F19/321G16H50/50
    • This document discusses, among other things, brain stimulation models, systems, devices, and methods, such as for deep brain stimulation (DBS) or other electrical stimulation. A model computes a volume of influence region for a simulated electrical stimulation using certain stimulation parameters, such as amplitude, pulsewidth, frequency, pulse morphology, electrode contact selection or location, return path electrode selection, pulse polarity, etc. The model uses a non-uniform tissue conductivity. This accurately represents brain tissue, which has highly directionally conductive neuron pathways yielding a non-homogeneous and anisotropic tissue medium. In one example, the non-uniform tissue conductivity is obtained from diffusion tensor imaging (DTI) data. In one example, a second difference of an electric potential distribution is used to define a volume of activation (VOA) or similar volume of influence. In another example, a neuron or axon model is used to calculate the volume of influence without computing the second difference of the electric potential distribution.
    • 本文件还讨论了脑刺激模型,系统,设备和方法,例如深部脑刺激(DBS)或其他电刺激。 模型使用某些刺激参数(如幅度,脉冲宽度,频率,脉冲形态,电极接触选择或位置,返回路径电极选择,脉冲极性等)来计算模拟电刺激的影响区域的体积。该模型使用非 - 组织电导率不均匀。 这准确地表示脑组织,其具有产生非均匀和各向异性的组织培养基的高度定向导电的神经元途径。 在一个示例中,从扩散张量成像(DTI)数据获得非均匀组织电导率。 在一个示例中,电位分布的第二差异用于定义激活量(VOA)或类似的影响体积。 在另一个例子中,使用神经元或轴突模型来计算影响的体积,而不计算电势分布的第二差异。