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    • 1. 发明授权
    • Chopper-stabilized analog-to-digital converter
    • 斩波稳定的模数转换器
    • US07714757B2
    • 2010-05-11
    • US11861939
    • 2007-09-26
    • Timothy J. DenisonJoel A. AndersonMichael W. Heinks
    • Timothy J. DenisonJoel A. AndersonMichael W. Heinks
    • H03M3/00
    • A61B5/7203A61B5/04012A61B5/7217A61B5/7228A61B5/7242H03M3/34H03M3/39
    • This disclosure describes a chopper-stabilized sigma-delta analog-to-digital converter (ADC). The ADC is configured to provide accurate output at low frequency with relatively low power. The chopper-stabilized ADC substantially reduces or eliminates noise and offset from an output signal produced by the mixer amplifier. Dynamic limitations, i.e., glitching that result from chopper stabilization at low power are substantially eliminated or reduced through a combination of chopping at low impedance nodes within the mixer amplifier and feedback. The signal path of the ADC operates as a continuous time system, providing minimal aliasing of noise or external signals entering the signal pathway at the chop frequency or its harmonics. In this manner, the chopper-stabilized ADC can be used in a low power system, such as an implantable medical device (IMD), to provide a stable, low-noise output signal.
    • 本公开描述了斩波稳定的Σ-Δ模数转换器(ADC)。 ADC配置为以较低功率提供低频精确输出。 斩波稳定的ADC大大减少或消除了由混频放大器产生的输出信号的噪声和偏移。 通过在混频放大器和反馈中的低阻抗节点处的斩波的组合,基本上消除或减少动态限制,即,在低功率下由斩波器稳定产生的啁啾。 ADC的信号路径作为连续时间系统工作,在斩波频率或其谐波处提供噪声或进入信号通道的外部信号的最小混叠。 以这种方式,斩波稳定的ADC可以用在诸如可植入医疗设备(IMD)的低功率系统中,以提供稳定的低噪声输出信号。
    • 2. 发明申请
    • CHOPPER-STABILIZED ANALOG-TO-DIGITAL CONVERTER
    • CHOPPER稳定的模拟数字转换器
    • US20090079607A1
    • 2009-03-26
    • US11861939
    • 2007-09-26
    • Timothy J. DenisonJoel A. AndersonMichael W. Heinks
    • Timothy J. DenisonJoel A. AndersonMichael W. Heinks
    • H03M1/12H03M3/00
    • A61B5/7203A61B5/04012A61B5/7217A61B5/7228A61B5/7242H03M3/34H03M3/39
    • This disclosure describes a chopper-stabilized sigma-delta analog-to-digital converter (ADC). The ADC is configured to provide accurate output at low frequency with relatively low power. The chopper-stabilized ADC substantially reduces or eliminates noise and offset from an output signal produced by the mixer amplifier. Dynamic limitations, i.e., glitching that result from chopper stabilization at low power are substantially eliminated or reduced through a combination of chopping at low impedance nodes within the mixer amplifier and feedback. The signal path of the ADC operates as a continuous time system, providing minimal aliasing of noise or external signals entering the signal pathway at the chop frequency or its harmonics. In this manner, the chopper-stabilized ADC can be used in a low power system, such as an implantable medical device (IMD), to provide a stable, low-noise output signal.
    • 本公开描述了斩波稳定的Σ-Δ模数转换器(ADC)。 ADC配置为以较低功率提供低频精确输出。 斩波稳定的ADC大大减少或消除了由混频放大器产生的输出信号的噪声和偏移。 通过在混频放大器和反馈中的低阻抗节点处的斩波的组合,基本上消除或减少动态限制,即,在低功率下由斩波器稳定产生的啁啾。 ADC的信号路径作为连续时间系统工作,在斩波频率或其谐波处提供噪声或进入信号通道的外部信号的最小混叠。 以这种方式,斩波稳定的ADC可以用在诸如可植入医疗设备(IMD)的低功率系统中,以提供稳定的低噪声输出信号。
    • 5. 发明授权
    • Hybrid rectification for recharging an implantable medical device
    • 用于为可植入医疗设备再充电的混合整流
    • US08271089B2
    • 2012-09-18
    • US12418291
    • 2009-04-03
    • David A. DinsmoorTodd A. KallmyerJoel A. AndersonTimothy J. Denison
    • David A. DinsmoorTodd A. KallmyerJoel A. AndersonTimothy J. Denison
    • A61N1/378
    • A61N1/3787H02J7/025H02J50/10
    • A charging system is disclosed. In one embodiment, the system includes a charging unit having a primary coil, and an implantable medical device comprising a secondary coil to receive charge from the primary coil. The implantable medical device further includes a half-wave voltage-doubling rectifier coupled to the secondary coil, a full-wave rectifier coupled to the secondary coil, and a rechargeable power source. Control logic is provided to periodically configure the rechargeable power source to receive charge from a selected one of the voltage-doubling circuit and the full-wave rectifier in a manner that increases rate at which charge is transferred from the secondary coil to the rechargeable power source. The control logic may configure the rechargeable power source to receive charge based on one or more monitored conditions which may include, for example, an indication of a current, a voltage, a coupling coefficient, back-scatter, and temperature.
    • 公开了一种充电系统。 在一个实施例中,系统包括具有初级线圈的充电单元和包括用于接收来自初级线圈的电荷的次级线圈的可植入医疗装置。 可植入医疗装置还包括耦合到次级线圈的半波倍压整流器,耦合到次级线圈的全波整流器和可再充电电源。 提供控制逻辑以周期性地配置可再充电电源,以便以增加电荷从次级线圈传递到可再充电电源的速率的方式从所选倍压电路和全波整流器中接收电荷 。 控制逻辑可以配置可再充电电源以基于一个或多个监视的条件来接收电荷,这些状态可以包括例如电流,电压,耦合系数,反向散射和温度的指示。
    • 6. 发明申请
    • HYBRID RECTIFICATION FOR RECHARGING AN IMPLANTABLE MEDICAL DEVICE
    • 用于补充可植入医疗器械的混合整流器
    • US20100256710A1
    • 2010-10-07
    • US12418291
    • 2009-04-03
    • David A. DinsmoorTodd A. KallmyerJoel A. AndersonTimothy J. Denison
    • David A. DinsmoorTodd A. KallmyerJoel A. AndersonTimothy J. Denison
    • A61N1/02H02J7/00
    • A61N1/3787H02J7/025H02J50/10
    • A charging system is disclosed. In one embodiment, the system includes a charging unit having a primary coil, and an implantable medical device comprising a secondary coil to receive charge from the primary coil. The implantable medical device further includes a half-wave voltage-doubling rectifier coupled to the secondary coil, a full-wave rectifier coupled to the secondary coil, and a rechargeable power source. Control logic is provided to periodically configure the rechargeable power source to receive charge from a selected one of the voltage-doubling circuit and the full-wave rectifier in a manner that increases rate at which charge is transferred from the secondary coil to the rechargeable power source. The control logic may configure the rechargeable power source to receive charge based on one or more monitored conditions which may include, for example, an indication of a current, a voltage, a coupling coefficient, back-scatter, and temperature.
    • 公开了一种充电系统。 在一个实施例中,系统包括具有初级线圈的充电单元和包括用于接收来自初级线圈的电荷的次级线圈的可植入医疗装置。 可植入医疗装置还包括耦合到次级线圈的半波倍压整流器,耦合到次级线圈的全波整流器和可再充电电源。 提供控制逻辑以周期性地配置可再充电电源,以便以增加电荷从次级线圈传递到可再充电电源的速率的方式从所选倍压电路和全波整流器中接收电荷 。 控制逻辑可以配置可再充电电源以基于一个或多个监视的条件来接收电荷,这些状态可以包括例如电流,电压,耦合系数,反向散射和温度的指示。