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1.发明授权Active guarding for reduction of resistive and capacitive signal loading with adjustable control of compensation level 有权主动防护用于减少电阻和电容信号负载，并可调整补偿电平公开(公告)号：US08487686B2
公开(公告)日：2013-07-16
申请号：US12594075
申请日：2008-03-31
Applicant: Joel Ironstone , David Wang , Frank Zhang , Chung Shing Fan , Morrie Altmejd , Kenneth Carless Smith
Inventor： Joel Ironstone , David Wang , Frank Zhang , Chung Shing Fan , Morrie Altmejd , Kenneth Carless Smith
IPC: H03L5/00
Abstract: In various embodiments, applicants' teachings are related to an active guarding circuit and method for reducing parasitic impedance signal loading on a signal-transmission channel that is shunted by a parasitic impedance. The presence of an electrical signal on the signal-transmission channel causes a leakage current to flow through the parasitic impedance. In various embodiments, the circuit comprises an amplifier and an impedance, one terminal of the impedance is coupled to the signal-transmission channel. The input of the amplifier is coupled to the signal-transmission channel and the output is coupled to the other terminal of the impedance so as to cause a compensation current to flow through the impedance. The gain of the amplifier and the value of the impedance are selected so that the compensation current has a magnitude substantially equal to the leakage current magnitude.
Abstract translation: 在各种实施例中，申请人的教导涉及用于减少由寄生阻抗分流的信号传输通道上的寄生阻抗信号负载的主动防护电路和方法。 在信号传输通道上存在电信号会导致漏电流流过寄生阻抗。 在各种实施例中，电路包括放大器和阻抗，阻抗的一个端子耦合到信号传输通道。 放大器的输入耦合到信号传输通道，输出耦合到阻抗的另一端，以使补偿电流流过阻抗。 选择放大器的增益和阻抗的值，使得补偿电流的幅度基本上等于泄漏电流大小。
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公开(公告)号：US09585593B2
公开(公告)日：2017-03-07
申请号：US13508655
申请日：2010-11-18
Applicant: Chung Shing Fan , Joel Ironstone , Kenneth Carless Smith
Inventor： Chung Shing Fan , Joel Ironstone , Kenneth Carless Smith
CPC classification number: A61B5/053 , A61B5/0537 , A61B5/4869 , A61B5/4875 , A61B5/4878 , A61B5/6843 , A61B5/6885 , A61B5/7203 , G01R1/30 , G01R27/02 , G01R31/00 , H03F3/50 , H03F3/602 , H03F2200/261
Abstract: Apparatus for electrically connecting measurement apparatus to a biological subject, the apparatus including a signal delivery circuit including a current buffer having a current buffer input for receiving a signal from a signal source and a current buffer output for supplying a current to an electrode attached to the biological subject, and a voltage buffer having a voltage buffer input coupled to the current buffer output and a voltage buffer output for providing a voltage signal indicative of a voltage at the electrode, to a sensor.
Abstract translation: 一种用于将测量装置电连接到生物学对象的装置，该装置包括信号传递电路，该信号传送电路包括具有用于从信号源接收信号的当前缓冲器输入端和用于向连接到 生物学对象，以及具有耦合到当前缓冲器输出的电压缓冲器输入的电压缓冲器和用于将指示电极处的电压的电压信号提供给传感器的电压缓冲器输出。
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3.发明申请ACTIVE GUARDING FOR REDUCTION OF RESISTIVE AND CAPACITIVE SIGNAL LOADING WITH ADJUSTABLE CONTROL OF COMPENSATION LEVEL 有权用于减少电阻和电容信号的主动保护与补偿水平的可调控制公开(公告)号：US20100109739A1
公开(公告)日：2010-05-06
申请号：US12594075
申请日：2008-03-31
Applicant: Joel Ironstone , David Wang , Frank Zhang , Chung Shing Fan , Morrie Altmejd , Kenneth Carless Smith
Inventor： Joel Ironstone , David Wang , Frank Zhang , Chung Shing Fan , Morrie Altmejd , Kenneth Carless Smith
IPC: H03L5/00
Abstract: In various embodiments, applicants' teachings are related to an active guarding circuit and method for reducing parasitic impedance signal loading on a signal-transmission channel that is shunted by a parasitic impedance. The presence of an electrical signal on the signal-transmission channel causes a leakage current to flow through the parasitic impedance. In various embodiments, the circuit comprises an amplifier and an impedance, one terminal of the impedance is coupled to the signal-transmission channel. The input of the amplifier is coupled to the signal-transmission channel and the output is coupled to the other terminal of the impedance so as to cause a compensation current to flow through the impedance. The gain of the amplifier and the value of the impedance are selected so that the compensation current has a magnitude substantially equal to the leakage current magnitude.
Abstract translation: 在各种实施例中，申请人的教导涉及用于减少由寄生阻抗分流的信号传输通道上的寄生阻抗信号负载的主动防护电路和方法。 在信号传输通道上存在电信号会导致漏电流流过寄生阻抗。 在各种实施例中，电路包括放大器和阻抗，阻抗的一个端子耦合到信号传输通道。 放大器的输入耦合到信号传输通道，输出耦合到阻抗的另一端，以使补偿电流流过阻抗。 选择放大器的增益和阻抗的值，使得补偿电流的幅度基本上等于泄漏电流大小。
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4.发明申请SYSTEM AND CIRCUIT FOR DISTRIBUTION OF PRECISE CURRENTS TO NUMEROUS PATIENT ELECTRODES AND FOR NON-INVASIVE PATIENT-ELECTRODE VOLTAGE MEASUREMENTS 审中-公开用于分配精细电流到病人电极的系统和电路以及用于非入侵患者电极电压测量的系统和电路公开(公告)号：US20130102920A1
公开(公告)日：2013-04-25
申请号：US13508655
申请日：2010-11-18
Applicant: Chung Shing Fan , Joel Ironstone , Kenneth Carless Smith
Inventor： Chung Shing Fan , Joel Ironstone , Kenneth Carless Smith
IPC: A61B5/053
CPC classification number: A61B5/053 , A61B5/0537 , A61B5/4869 , A61B5/4875 , A61B5/4878 , A61B5/6843 , A61B5/6885 , A61B5/7203 , G01R1/30 , G01R27/02 , G01R31/00 , H03F3/50 , H03F3/602 , H03F2200/261
Abstract: Apparatus for electrically connecting measurement apparatus to a biological subject, the apparatus including a signal delivery circuit including a current buffer having a current buffer input for receiving a signal from a signal source and a current buffer output for supplying a current to an electrode attached to the biological subject, and a voltage buffer having a voltage buffer input coupled to the current buffer output and a voltage buffer output for providing a voltage signal indicative of a voltage at the electrode, to a sensor.
Abstract translation: 一种用于将测量装置电连接到生物学对象的装置，该装置包括信号传递电路，该信号传送电路包括具有用于从信号源接收信号的当前缓冲器输入端和用于向连接到 生物学对象，以及具有耦合到当前缓冲器输出的电压缓冲器输入的电压缓冲器和用于将指示电极处的电压的电压信号提供给传感器的电压缓冲器输出。
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