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公开(公告)号：US20110022123A1
公开(公告)日：2011-01-27
申请号：US12507976
申请日：2009-07-23
申请人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
发明人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
CPC分类号： A61N1/37223 , A61N1/3718 , H03H1/0007 , H03H7/06 , H03H7/175
摘要： This disclosure describes techniques for reducing, and possibly eliminating, adverse effects caused by signals induced on an inductive antenna of an implanted medical device by varying magnetic fields from a source of interference, such as the gradient magnetic fields applied during an MRI procedure. For example, the implantable medical device includes an inductive antenna that receives signals via inductive coupling, a filter circuit that attenuates signals induced on the inductive antenna by varying magnetic fields generated from a source of interference and substantially passes signals induced on the inductive antenna by varying magnetic fields generated by an expected source and a telemetry module that processes the signals from the filter circuit.
摘要翻译： 本公开描述了通过改变来自干扰源的磁场（例如在MRI过程中施加的梯度磁场）来减少并且可能消除由植入的医疗装置的感应天线上感应的信号引起的不利影响的技术。 例如，可植入医疗装置包括通过电感耦合接收信号的感应天线，通过改变从干扰源产生的磁场来衰减在感应天线上感应的信号的滤波器电路，并通过改变 由预期源产生的磁场和处理来自滤波器电路的信号的遥测模块。
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公开(公告)号：US08428744B2
公开(公告)日：2013-04-23
申请号：US12507976
申请日：2009-07-23
申请人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
发明人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
IPC分类号： A61N1/00
CPC分类号： A61N1/37223 , A61N1/3718 , H03H1/0007 , H03H7/06 , H03H7/175
摘要： This disclosure describes techniques for reducing, and possibly eliminating, adverse effects caused by signals induced on an inductive antenna of an implanted medical device by varying magnetic fields from a source of interference, such as the gradient magnetic fields applied during an MRI procedure. For example, the implantable medical device includes an inductive antenna that receives signals via inductive coupling, a filter circuit that attenuates signals induced on the inductive antenna by varying magnetic fields generated from a source of interference and substantially passes signals induced on the inductive antenna by varying magnetic fields generated by an expected source and a telemetry module that processes the signals from the filter circuit.
摘要翻译： 本公开描述了通过改变来自干扰源的磁场（例如在MRI过程中施加的梯度磁场）来减少并且可能消除由植入的医疗装置的感应天线上感应的信号引起的不利影响的技术。 例如，可植入医疗装置包括通过电感耦合接收信号的感应天线，通过改变从干扰源产生的磁场来衰减在感应天线上感应的信号的滤波器电路，并通过改变 由预期源产生的磁场和处理来自滤波器电路的信号的遥测模块。
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公开(公告)号：US20110191053A1
公开(公告)日：2011-08-04
申请号：US13084544
申请日：2011-04-11
申请人： John David Hamre , Peng Li , Steven J. Fraasch
发明人： John David Hamre , Peng Li , Steven J. Fraasch
IPC分类号： G06F19/00
CPC分类号： G01R13/0254 , G01R29/26
摘要： A system, method, and apparatus for obtaining a record of logic level transitions within a signal, and for accurately determining a voltage-time pair exhibited by the signal. To achieve these ends, a front-end device may be mated to a real-time sampling system, such as an oscilloscope. The front-end device effectively permits the oscilloscope to observe signals exhibiting greater data rates than otherwise possible without the front-end device.
摘要翻译： 一种用于获得信号内的逻辑电平转换记录的系统，方法和装置，并用于精确地确定信号所显示的电压 - 时间对。 为了实现这些目的，前端设备可以配合到诸如示波器的实时采样系统。 前端设备有效地允许示波器在没有前端设备的情况下观察显示更高数据速率的信号。
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公开(公告)号：US07688927B2
公开(公告)日：2010-03-30
申请号：US11314728
申请日：2005-12-20
CPC分类号： H03D13/004
摘要： A clock recovery system includes a rough clock generator, which yields a rough clock signal, based upon logic level transitions exhibited by a data signal. The rough clock signal is supplied to a phase locked loop having an adjustable order of frequency response, an adjustable corner frequency, an adjustable natural frequency, and/or an adjustable damping factor. The clock recovery system includes control parameters that, when properly adjusted, suppress non-ideal effects of components within the clock recovery system, and also permit the frequency response of the phase locked loop to be returned to a desired response.
摘要翻译： 时钟恢复系统包括粗略的时钟发生器，其基于由数据信号显示的逻辑电平转换产生粗略的时钟信号。 粗略的时钟信号被提供给具有可调节频率响应次序，可调转角频率，可调整固有频率和/或可调整阻尼因子的锁相环。 时钟恢复系统包括控制参数，当被适当地调整时，抑制时钟恢复系统内的组件的非理想效应，并且还允许锁相环的频率响应返回到期望的响应。
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公开(公告)号：US07305312B2
公开(公告)日：2007-12-04
申请号：US11329962
申请日：2006-01-10
申请人： John David Hamre , Peng Li , Steven J. Fraasch
发明人： John David Hamre , Peng Li , Steven J. Fraasch
CPC分类号： G01R13/0254 , G01R29/26
摘要： A system, method, and apparatus for obtaining a record of logic level transitions within a signal, and for accurately determining a voltage-time pair exhibited by the signal. To achieve these ends, a front-end device may be mated to a real-time sampling system, such as an oscilloscope. The front-end device effectively permits the oscilloscope to observe signals exhibiting greater data rates than otherwise possible without the front-end device.
摘要翻译： 一种用于获得信号内的逻辑电平转换记录的系统，方法和装置，并用于精确地确定信号所显示的电压 - 时间对。 为了实现这些目的，前端设备可以配合到诸如示波器的实时采样系统。 前端设备有效地允许示波器在没有前端设备的情况下观察显示更高数据速率的信号。
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