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1. 发明申请

WO2009042749A3 DETECTING OVERLOADING OF AN ANALOG-TO-DIGITAL CONVERTER OF AN IMPLANTABLE MEDICAL DEVICE 审中-公开
标题翻译：检测可移植医疗设备的模拟数字转换器的过载
公开(公告)号：WO2009042749A3
公开(公告)日：2009-09-17
申请号：PCT/US2008077631
申请日：2008-09-25
申请人： MEDTRONIC INC , TAN WENXIAO , ANDERSON JOEL A , HEINKS MICHAEL W
发明人： TAN WENXIAO , ANDERSON JOEL A , HEINKS MICHAEL W
IPC分类号： A61N1/37 , H03M1/12
CPC分类号： H03M3/366 , A61N1/3706 , A61N1/3718 , H03M3/434
摘要： In general, this disclosure is related to detecting overload within an analog-to-digital converter (ADC) of an implantable medical device (IMD). The IMD may include an overload detection module that determines whether the ADC is operating in an overload condition. When the overload detection module determines the ADC is operating in the overload condition for a particular period of time, the ADC may send an overload signal to a processor that processes the output of the ADC. The overload signal notifies the processor that the ADC is operating in or is close to operating in the overload condition. In response to the indication from the ADC, the processor of the IMD may disregard the output of the ADC. The processor may continue to disregard the output of the ADC until the overload signal is deactivated, thereby indicating that the ADC is no longer in an overloaded condition.
摘要翻译：通常，本公开涉及检测可植入医疗装置（IMD）的模数转换器（ADC）中的过载。 IMD可以包括一个过载检测模块，用于确定ADC是否工作在过载状态。当过载检测模块确定ADC在特定时间段内处于过载状态时，ADC可能会向处理ADC输出的处理器发送过载信号。过载信号通知处理器ADC正在运行或接近工作在过载状态。响应于ADC的指示，IMD的处理器可能会忽略ADC的输出。处理器可以继续忽略ADC的输出，直到过载信号被去激活，从而指示ADC不再处于过载状态。

2. 发明申请

WO2008112828A3 SWITCHED CAPACITOR NOTCH FILTER CIRCUITS 审中-公开
标题翻译：开关电容器滤波电路
公开(公告)号：WO2008112828A3
公开(公告)日：2008-11-20
申请号：PCT/US2008056748
申请日：2008-03-12
申请人： TEXAS INSTRUMENTS INC , TAN WENXIAO
发明人： TAN WENXIAO
IPC分类号： H03B1/00 , G01N27/04 , H03K3/45 , H03K3/59 , H03K5/00 , H03K17/80 , H03K17/90 , H04B1/10
CPC分类号： H03H19/004
摘要： Switched capacitor notch filter circuits are disclosed. An example switched capacitor notch filter circuit (200) described herein includes a switched capacitor amplifier (202) to receive an input signal and a first feedback signal, to amplify the input signal and the first feedback signal, and to output an output signal, a first integrator (206) to receive the output signal and a second feedback signal, to integrate the output signal and the second feedback signal, and to output the first feedback signal, a second integrator (208) to receive the first feedback signal, to integrate the first feedback signal, and to output the second feedback signal, a sample and hold (204) to receive the output signal, to periodically store a value of the output signal, and to output the value of the output signal, and a first switch (PH2B6) to couple the sample and hold to the output signal when the sample and hold is to store the value of the output signal and to isolate the sample and hold from the output signal when the sample and hold is to output the value of the output signal.
摘要翻译：公开了开关电容器陷波滤波器电路。本文所述的示例性开关电容器陷波滤波器电路（200）包括接收输入信号和第一反馈信号的开关电容放大器（202），以放大输入信号和第一反馈信号，并输出输出信号，第一积分器（206），用于接收输出信号和第二反馈信号，以对输出信号和第二反馈信号进行积分，并输出第一反馈信号;第二积分器（208），用于接收第一反馈信号，第一反馈信号，并输出第二反馈信号，采样和保持（204）以接收输出信号，周期性地存储输出信号的值，并输出输出信号的值，以及第一开关（PH2B6）将采样和保持连接到输出信号，当采样和保持将存储输出信号的值，并在采样和保持输出v时将采样和保持与输出信号隔离输出信号。

3. 发明申请

WO2008112828A2 SWITCHED CAPACITOR NOTCH FILTER CIRCUITS 审中-公开
标题翻译：开关电容器缺口滤波器电路
公开(公告)号：WO2008112828A2
公开(公告)日：2008-09-18
申请号：PCT/US2008/056748
申请日：2008-03-12
申请人： TEXAS INSTRUMENTS INCORPORATED , TAN, Wenxiao
发明人： TAN, Wenxiao
IPC分类号： H03K5/00
CPC分类号： H03H19/004
摘要： Switched capacitor notch filter circuits are disclosed. An example switched capacitor notch filter circuit (200) described herein includes a switched capacitor amplifier (202) to receive an input signal and a first feedback signal, to amplify the input signal and the first feedback signal, and to output an output signal, a first integrator (206) to receive the output signal and a second feedback signal, to integrate the output signal and the second feedback signal, and to output the first feedback signal, a second integrator (208) to receive the first feedback signal, to integrate the first feedback signal, and to output the second feedback signal, a sample and hold (204) to receive the output signal, to periodically store a value of the output signal, and to output the value of the output signal, and a first switch (PH2B6) to couple the sample and hold to the output signal when the sample and hold is to store the value of the output signal and to isolate the sample and hold from the output signal when the sample and hold is to output the value of the output signal.
摘要翻译：公开了开关电容器陷波滤波器电路。本文描述的示例开关电容器陷波滤波器电路（200）包括开关电容放大器（202），用于接收输入信号和第一反馈信号，放大输入信号和第一反馈信号，并输出输出信号，第一积分器（206），用于接收输出信号和第二反馈信号;积分输出信号和第二反馈信号并输出第一反馈信号;第二积分器（208），用于接收第一反馈信号;积分器第一反馈信号并且输出第二反馈信号;采样和保持（204），用于接收输出信号，周期性地存储输出信号的值，并且输出输出信号的值;以及第一开关（PH2B6）在采样和保持要存储输出信号的值时将采样耦合到输出信号，并在采样和保持要输出v时隔离采样和保持输出信号输出信号的一部分。

4. 发明申请

WO2009042749A2 DETECTING OVERLOADING OF AN ANALOG-TO-DIGITAL CONVERTER OF AN IMPLANTABLE MEDICAL DEVICE 审中-公开
标题翻译：检测可植入医疗设备的模拟数字转换器的超载
公开(公告)号：WO2009042749A2
公开(公告)日：2009-04-02
申请号：PCT/US2008/077631
申请日：2008-09-25
申请人： MEDTRONIC, INC , TAN, Wenxiao , ANDERSON, Joel A. , HEINKS, Michael W.
发明人： TAN, Wenxiao , ANDERSON, Joel A. , HEINKS, Michael W.
IPC分类号： A61N1/37 , H03M1/12
CPC分类号： H03M3/366 , A61N1/3706 , A61N1/3718 , H03M3/434
摘要： In general, this disclosure is related to detecting overload within an analog-to-digital converter (ADC) of an implantable medical device (IMD). The IMD may include an overload detection module that determines whether the ADC is operating in an overload condition. When the overload detection module determines the ADC is operating in the overload condition for a particular period of time, the ADC may send an overload signal to a processor that processes the output of the ADC. The overload signal notifies the processor that the ADC is operating in or is close to operating in the overload condition. In response to the indication from the ADC, the processor of the IMD may disregard the output of the ADC. The processor may continue to disregard the output of the ADC until the overload signal is deactivated, thereby indicating that the ADC is no longer in an overloaded condition.
摘要翻译：通常，本公开涉及检测可植入医疗设备（IMD）的模数转换器（ADC）内的过载。 IMD可以包括过载检测模块，该过载检测模块确定ADC是否在过载条件下操作。当过载检测模块确定ADC在过载条件下工作了特定的时间段时，ADC可能会向处理ADC输出的处理器发送过载信号。过载信号通知处理器ADC正在或接近在过载条件下运行。响应来自ADC的指示，IMD的处理器可忽略ADC的输出。处理器可能会继续忽视ADC的输出，直到过载信号被禁用，从而表明ADC不再处于过载状态。

5. 发明申请

WO2009042012A1 CAPACITIVE DIGITAL-TO-ANALOG CONVERTER RESET IN AN IMPLANTABLE MEDICAL DEVICE ANALOG-TO DIGITAL CONVERTER 审中-公开
标题翻译：可移植医疗设备中的数字到模拟转换器复位模拟数字转换器
公开(公告)号：WO2009042012A1
公开(公告)日：2009-04-02
申请号：PCT/US2008/009080
申请日：2008-07-25
申请人： MEDTRONIC, INC. , HEINKS, Michael, W. , ANDERSON, Joel, A. , TAN, Wenxiao
发明人： HEINKS, Michael, W. , ANDERSON, Joel, A. , TAN, Wenxiao
IPC分类号： H03M1/00 , H03M3/00 , A61N1/32
CPC分类号： A61N1/3704 , H03M3/382 , H03M3/39
摘要： In general, this disclosure describes techniques for capacitive digit-to-analog converter (CAPDAC) resetting in an implantable medical device (IMD) analog-to-digital converter (ADC). The CAPDAC of an IMD ADC may occasionally be reset to increase the accuracy of its output. The output of the CAPDAC may be disconnected from a negative feedback input of an integrator and connected to a pseudo load during the reset. Disconnecting the CAPDAC from the negative feedback input of the integrator reduces the affect of the reset on the integrator. During the reset of the CAPDAC, the negative feedback input of integrator is coupled to a sample and hold capacitor, which temporarily provides a input approximately equal to a previous, e.g., immediate, value of the output of CAPDAC prior to the reset. Thus, the resetting of the CAPDAC is done in such a manner that the affect of the reset on integrator is substantially reduced or eliminated.
摘要翻译：通常，本公开描述了用于可植入医疗设备（IMD）模数转换器（ADC）中的电容性数模转换器（CAPDAC）复位的技术。 IMD ADC的CAPDAC可能偶尔被复位以提高其输出的精度。 CAPDAC的输出可能与积分器的负反馈输入断开，并在复位期间连接到伪负载。将CAPDAC与积分器的负反馈输入断开，降低了积分器上复位的影响。在CAPDAC的复位期间，积分器的负反馈输入耦合到采样和保持电容器，其在复位之前临时提供近似等于CAPDAC的输出的先前（例如）立即值的输入。因此，CAPDAC的复位以这样的方式完成，使得积分器上的复位的影响被显着地减少或消除。

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