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    • 2. 发明授权
    • Clock level shifting circuit
    • 时钟电平移位电路
    • US4164716A
    • 1979-08-14
    • US908284
    • 1978-05-22
    • George I. DagueLawrence E. Murphy
    • George I. DagueLawrence E. Murphy
    • H03F3/45H03K5/02H03K19/018
    • H03K19/01831H03F3/45071H03K5/02
    • A level shifting circuit for binary signals comprises a pair of equal value resistors connecting a common input signal to a pair of input terminals of a differential amplifier. A capacitor from one input terminal to ground stores the long term average input signal level for comparison with the instantaneous input signal level on the other input terminal. In another embodiment the range of input signal levels is modified by connecting equal value resistors from the input terminals to a voltage source. The invention provides amplification with minimum propagation delay, symmetrical propagation delay, a conventional logic level output signal and only requires a single power supply source for the amplifier circuit over a large range of input signal levels.
    • 用于二进制信号的电平移位电路包括将公共输入信号连接到差分放大器的一对输入端的一对等电阻器。 从一个输入端子到地面的电容器存储长期平均输入信号电平,用于与另一个输入端子上的瞬时输入信号电平进行比较。 在另一个实施例中,通过将等值电阻器从输入端子连接到电压源来修改输入信号电平的范围。 本发明提供了具有最小传播延迟,对称传播延迟,常规逻辑电平输出信号的放大,并且仅需要在大范围的输入信号电平上用于放大器电路的单个电源。
    • 4. 发明授权
    • Interior alignment light for open magnet MRI
    • 用于开放磁体MRI的内部对准灯
    • US06294915B1
    • 2001-09-25
    • US09274374
    • 1999-03-23
    • Lawrence E. MurphyBobby Glenn Keen
    • Lawrence E. MurphyBobby Glenn Keen
    • G01V300
    • G01R33/28A61B5/0555G01R33/3806
    • A patient alignment device is disclosed for use in open magnet MRI having a movable patient table to move a patient within the open magnet MRI in order to position a desired patient scan area accurately within the field-of-view (FOV) of the open magnet MRI. A first alignment light is placed on the outer periphery of the upper magnetic structure of the open MRI to emit a light beam in longitudinal alignment with a center point of the FOV. A second alignment light is positioned to emit a second light beam downwardly from the upper magnetic structure to indicate an interior reference point of the FOV. The second alignment light is then used to reposition a patient within the open magnet MRI without having to withdraw the patient from the open magnet MRI.
    • 公开了一种用于开放磁体MRI的患者对准装置,其具有可移动的患者台,用于使开放磁体MRI内的患者移动,以将所需患者扫描区域准确地定位在开放磁体的视场(FOV)内 MRI。 第一对准光放置在开放MRI的上部磁性结构的外周上,以与FOV的中心点纵向对准地发射光束。 第二对准光被定位成从上磁结构向下发射第二光束以指示FOV的内部参考点。 然后使用第二对准光来重新定位开放磁体MRI内的患者,而不必从开放磁体MRI中撤出患者。
    • 9. 发明申请
    • DEFIBRILLATOR DEVICE WITH STATUS INDICATING TRANSPORT HANDLE
    • 具有指示运输手柄状态的减速器装置
    • US20120123491A1
    • 2012-05-17
    • US12945955
    • 2010-11-15
    • William Tom HunterLawrence E. Murphy
    • William Tom HunterLawrence E. Murphy
    • A61N1/39
    • A61N1/3993A61N1/39
    • A device and method for automatically indicating an operating status of a defibrillator is provided. A defibrillator device includes a housing and a handle attached to the housing constructed at least partially of a light-transmitting material. A user interface is positioned within the housing that includes a plurality of controls thereon, with the plurality of controls enabling a user to control an operating status of the defibrillator device. A light source is positioned within the housing that is configured to illuminate the handle in one of a plurality of colors. The defibrillator device also includes a processor configured to determine the operating status of the defibrillator device and selectively control the light source to illuminate the handle in one of the plurality of colors based on the determined operating status of the defibrillator device.
    • 提供一种用于自动指示除颤器的操作状态的装置和方法。 除颤器装置包括壳体和附接到至少部分由透光材料构成的壳体的手柄。 用户界面位于壳体内,其中包括多个控制,多个控制使得用户能够控制除颤器装置的操作状态。 光源位于壳体内,其构造成以多种颜色之一照亮手柄。 除颤器装置还包括处理器,其被配置为基于所确定的去纤颤器装置的运行状态来确定除颤器装置的运行状态并选择性地控制光源以使多个颜色中的一个照亮手柄。