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    Partial modification of a nominal impedance using digital impedance synthesis
    31.
    发明授权
    Partial modification of a nominal impedance using digital impedance synthesis 失效
    使用数字阻抗合成部分修改标称阻抗

    公开(公告)号：US06456665B1

    公开(公告)日：2002-09-24

    申请号：US09321957

    申请日：1999-05-28

    Applicant: Sprio Poulis ,  Shayne Messerly ,  John Evans

    Inventor： Sprio Poulis ,  Shayne Messerly ,  John Evans

    IPC: H04B308

    CPC classification number: H04L27/0002

    Abstract: A circuit is provided for creating a termination impedance which matches a characteristic impedance. The characteristic impedance of a system or network is matched by placing a nominal impedance across the transmission line. The difference between the nominal impedance and the characteristic impedance is synthesized such that the synthesized or generated impedance is in parallel with the nominal impedance. The parallel combination of the nominal impedance and the generated impedance produces a termination impedance which substantially matches the characteristic impedance. The generated impedance is created by sensing a voltage and scaling that voltage by a factor related to the nominal and characteristic impedances. The scaled voltage controls a current source which produces a current having a value related to the inverse of the impedance. The ration of the sensed voltage and the generated current is the impedance which, when combined with the nominal impedance, produces the desired termination impedance. In this manner, the characteristic impedance of the source is matched by the altered nominal impedance.

    Abstract translation: 提供一个电路用于产生匹配特性阻抗的终端阻抗。 通过在传输线路上放置标称阻抗来匹配系统或网络的特性阻抗。 合成标称阻抗和特性阻抗之间的差异，使得合成或产生的阻抗与标称阻抗并联。 标称阻抗和产生的阻抗的并联组合产生基本匹配特性阻抗的终端阻抗。 产生的阻抗是通过感测电压和将该电压缩放与标称和特性阻抗相关的因子来产生的。 缩放电压控制电流源，其产生具有与阻抗的反相关的值的电流。 感测电压和产生的电流的比例是当与标称阻抗组合时产生期望的终端阻抗的阻抗。 以这种方式，源的特性阻抗通过改变的标称阻抗匹配。

    Method and system for externally incorporating automatic switching between voice and data communications
    32.
    发明授权
    Method and system for externally incorporating automatic switching between voice and data communications 失效
    用于外部融合语音和数据通信之间自动切换的方法和系统

    公开(公告)号：US06307880B1

    公开(公告)日：2001-10-23

    申请号：US08957711

    申请日：1997-10-24

    Applicant: John P. Evans ,  Shayne Messerly

    Inventor： John P. Evans ,  Shayne Messerly

    IPC: H04B144

    CPC classification number: H04M11/066

    Abstract: A method and apparatus for automatically switching between voice and data communications as directed by a voice and data capable modem via a cable assembly incorporating a switching means for facilitating and inhibiting the routing of voice information to a voice telephone. A voice and data capable modem incorporates the software functionality associated with a voice and data capable protocol with minimal impact to the form factor associated with the modem, To reduce the impact to the form factor associated with integrated modem designs, the switching hardware associated with voice and data capability is incorporated into a cable assembly used to interconnect the voice and data capable modem with the voice telephone. Additional means for identifying the cable assembly as having the requisite switching functionality is also provided.

    Abstract translation: 一种用于通过包含用于促进和禁止语音信息到语音电话的路由的切换装置的电缆组件由语音和数据能力调制解调器指导的语音和数据通信之间自动切换的方法和装置。 具有语音和数据能力的调制解调器包含与语音和数据能力协议相关联的软件功能，对与调制解调器相关联的形式影响的影响最小。为了减少与集成调制解调器设计相关联的形式因素的影响，与语音相关联的交换硬件 并且数据能力被并入用于将具有语音和数据的调制解调器与语音电话相互连接的电缆组件中。 还提供了用于将电缆组件识别为具有必要的切换功能的附加装置。

    SYSTEMS AND METHODS FOR POSITIONING A CATHETER
    35.
    发明申请
    SYSTEMS AND METHODS FOR POSITIONING A CATHETER 有权
    用于定位导管的系统和方法

    公开(公告)号：US20090203989A1

    公开(公告)日：2009-08-13

    申请号：US12369625

    申请日：2009-02-11

    Applicant: Eddie K. Burnside ,  Shayne Messerly ,  Robert N. Golden ,  Rand W. Lee

    Inventor： Eddie K. Burnside ,  Shayne Messerly ,  Robert N. Golden ,  Rand W. Lee

    IPC: A61B5/05

    CPC classification number: A61B5/062 ,  A61B1/00158 ,  A61B5/05 ,  A61B5/06 ,  A61B5/6851 ,  A61B5/6852 ,  A61B5/72 ,  A61B5/742

    Abstract: A method for displaying a position of a medical device, such as a catheter, during insertion of the medical device into a patient is disclosed. In one example embodiment, the method includes obtaining a first set of detected position data relating to a location marker, then determining a possible first position of the location marker. A first confidence level relating to a match between the first set of detected position data and a first set of predicted position data is assigned. A determination is made whether the first confidence level meets or exceeds a first threshold. If the first confidence level meets or exceeds the first threshold, a determination is then made whether the first position of the location marker is within a first detection zone. If the first position of the location marker is within the first detection zone, the first position of the location marker is displayed.

    Abstract translation: 公开了一种用于在将医疗装置插入患者体内时显示诸如导管的医疗装置的位置的方法。 在一个示例性实施例中，该方法包括获得与位置标记相关的第一组检测到的位置数据，然后确定位置标记的可能的第一位置。 分配与第一组检测位置数据和第一组预测位置数据之间的匹配相关的第一置信水平。 确定第一置信度是否满足或超过第一阈值。 如果第一置信度达到或超过第一阈值，则确定位置标记的第一位置是否在第一检测区内。 如果位置标记的第一位置在第一检测区域内，则显示位置标记的第一位置。

    LOW POWER ULTRASOUND SYSTEM
    36.
    发明申请
    LOW POWER ULTRASOUND SYSTEM 有权
    低功率超声系统

    公开(公告)号：US20080255451A1

    公开(公告)日：2008-10-16

    申请号：US12100983

    申请日：2008-04-10

    Applicant: Ben Cohen ,  Dylan K. Robles ,  Shayne Messerly

    Inventor： Ben Cohen ,  Dylan K. Robles ,  Shayne Messerly

    IPC: A61B8/00

    CPC classification number: A61B8/145 ,  A61B8/4472 ,  A61B8/4483 ,  A61B8/461 ,  A61B8/5207 ,  A61B8/56 ,  G01S7/003 ,  G01S7/52017 ,  G01S7/5208 ,  G01S7/52082 ,  G01S7/52085 ,  G01S7/52096 ,  G01S15/8909

    Abstract: A low power ultrasound system for use in sonography applications, including vascular imaging, is disclosed. In one embodiment, the low power ultrasound system comprises a base unit that includes an image processor and a display. An ultrasound probe is operably connected to the base unit. The probe includes a head portion including an array of crystal transducers. A plurality of pulser/receiver modules that cause the transducers to emit ultrasonic transmit pulses are also included in the probe. The pulser/receiver modules are further configured to receive analog signals relating to ultrasonic echo receive pulses detected by the transducers. The probe includes a singular low noise amplifier that amplifies the analog signals, and an analog-to-digital converter that converts the analog signals to a digital signal. A wireless interface is included for enabling the digital signal to be wirelessly transmitted from the probe to the image processor of the base unit.

    Abstract translation: 公开了一种用于超声波应用的低功率超声系统，包括血管成像。 在一个实施例中，低功率超声系统包括包括图像处理器和显示器的基本单元。 超声探头可操作地连接到基座单元。 探头包括包括晶体换能器阵列的头部。 导致换能器发射超声波发射脉冲的多个脉冲发生器/接收器模块也包括在探头中。 脉冲发生器/接收器模块还被配置为接收与由换能器检测到的超声回波接收脉冲有关的模拟信号。 该探头包括放大模拟信号的单个低噪声放大器，以及将模拟信号转换为数字信号的模数转换器。 包括无线接口，用于使数字信号从探头无线传输到基本单元的图像处理器。

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