公开(公告)号：US06745077B1

公开(公告)日：2004-06-01

申请号：US09975042

申请日：2001-10-09

申请人： Glen A. Griffith ,  Tae W. Hahn

发明人： Glen A. Griffith ,  Tae W. Hahn

IPC分类号： A61N108

CPC分类号： A61N1/08

摘要： A fixed frequency external power source having an external coil is inductively coupled with an implanted coil of an implanted medical device. The implant device has an electronic impedance transformer as part of its load circuit. Such electronic impedance transformer sets a proper voltage and current ratio (impedance) so that the coil set, i.e., the external coil and the implanted coil, are loaded with an optimal load. Such optimal loading, in turn, significantly minimizes any mismatch loss from the inductive link between the external coil and the implant coil, and allows wide ranges in the voltage and load resistance and coil separation, while at the same time maintaining an optimal load condition. The impedance transformer is especially applicable to fully implantable cochlear stimulation systems wherein, during one mode of operation, a relatively large power level must be transferred for charging the implanted power storage element, e.g., a rechargeable battery, but wherein another mode of operation, the implant is operated and powered from an external unit and a relatively small power level is transferred to the implant device. The ratio of these power levels may be large, e.g., about 30 to 1, and unless the coil set, i.e., the external coil and implanted coil, are altered between these different load conditions, a huge mismatch loss may occur, which mismatch greatly reduces the power transfer efficiency. The impedance transformer of the invention minimizes such a mismatch loss.

摘要翻译： 具有外部线圈的固定频率外部电源与注入的医疗装置的植入线圈感应耦合。 植入装置具有作为其负载电路的一部分的电子阻抗变压器。 这种电子阻抗变压器设置适当的电压和电流比（阻抗），使得线圈组，即外部线圈和植入线圈被加载有最佳负载。 这样的最佳负载又显着地使来自外部线圈和植入线圈之间的电感链路的任何失配损耗最小化，并允许电压和负载电阻以及线圈间隔的宽范围，同时保持最佳的负载状态。 阻抗变换器特别适用于完全可植入的耳蜗刺激系统，其中在一种操作模式中，必须传送相对较大的功率电平以对植入的电力存储元件（例如可再充电电池）进行充电，但是另一种操作模式 植入物由外部单元操作和供电，相对小的功率水平传递到植入装置。 这些功率电平的比例可能很大，例如大约30比1，除非线圈组，即外部线圈和注入的线圈在这些不同的负载条件之间被改变，否则可能发生巨大的失配损耗， 降低功率传输效率。 本发明的阻抗变换器使这种失配损失最小化。

公开(公告)号：US5751425A

公开(公告)日：1998-05-12

申请号：US777498

申请日：1996-12-30

申请人： Donald A. Frederick ,  John G. Mark ,  Daniel A. Tazartes ,  David B. Hall ,  Tae W. Hahn

发明人： Donald A. Frederick ,  John G. Mark ,  Daniel A. Tazartes ,  David B. Hall ,  Tae W. Hahn

IPC分类号： G01C19/66 ,  G01C19/64

CPC分类号： G01C19/66

摘要： A ring laser gyroscope having an alternating Faraday bias includes mode combining apparatus arranged to cause interference between the modes that propagate within the cavity. Signal separating apparatus separates a signal indicative of rotation of the frame from other components of the combined intensity signal. The signal separating apparatus produces two signals indicative of the light intensity in the interference pattern of the combined modes. These two signals have a 180.degree. phase difference in corresponding components that are dependent upon the geometric bias caused by the non-planar optical path to produce a rotation signal that is independent of the spatially uniform interference fringes caused by the geometric bias.

摘要翻译： 具有交替法拉第偏置的环形激光陀螺仪包括布置成在腔内传播的模式之间产生干涉的模式组合装置。 信号分离装置将表示帧的旋转的信号与组合强度信号的其他分量分离。 信号分离装置产生指示组合模式的干涉图案中的光强度的两个信号。 这两个信号在对应的分量中具有180°的相位差，其取决于由非平面光路引起的几何偏置，以产生独立于由几何偏差引起的空间均匀干涉条纹的旋转信号。

公开(公告)号：US5527036A

公开(公告)日：1996-06-18

申请号：US366888

申请日：1994-12-30

申请人： Thomas J. Hutchings ,  Tae W. Hahn

发明人： Thomas J. Hutchings ,  Tae W. Hahn

IPC分类号： A63B69/36

CPC分类号： A63B69/3614 ,  A63B2220/805

摘要： An electro-optic device is used to detect the position and speed of a golf club head as it passes in front of the device. This information triggers a short optical pulse of light to illuminate the club head, allowing a golfer to see the club head at a desired position as an after-image, and to read the displayed club head speed.

摘要翻译： 电光装置用于检测高尔夫球杆头在穿过装置前方的位置和速度。 该信息触发光的短脉冲以照亮球杆头，允许高尔夫球手将球杆头作为后置图像看到期望的位置，并且读取所显示的球杆头速度。

公开(公告)号：US5374990A

公开(公告)日：1994-12-20

申请号：US45905

申请日：1993-04-12

申请人： Tae W. Hahn ,  Daniel A. Tazartes ,  John G. Mark

发明人： Tae W. Hahn ,  Daniel A. Tazartes ,  John G. Mark

IPC分类号： G01C19/66 ,  H01S3/139 ,  G01C19/64

CPC分类号： G01C19/665 ,  H01S3/139

摘要： Dispersion in a multi-oscillator cavity is equalized by processing information extracted from the laser beams within the cavity to generate an error signal representative of dispersion bias, and applying a bias control signal to the cavity in such a way as to null the error signal. The bias control signal is preferably a magnetic field applied to the gain medium of the cavity by passing a corresponding current through a coil surrounding the medium. In exemplary embodiments, the laser beams are modulated by modulating the applied magnetic field and/or the path length of the cavity.

摘要翻译： 通过处理从空腔内的激光束提取的信息来产生表示色散偏差的误差信号并将偏置控制信号以使得误差信号无效的方式施加到空腔中来均衡多谐振腔中的色散。 偏置控制信号优选地是通过使相应的电流通过围绕介质的线圈施加到空腔的增益介质的磁场。 在示例性实施例中，通过调制施加的磁场和/或腔的路径长度来调制激光束。

公开(公告)号：US5196905A

公开(公告)日：1993-03-23

申请号：US517644

申请日：1990-04-06

申请人： Tae W. Hahn ,  Salim N. Jabr

发明人： Tae W. Hahn ,  Salim N. Jabr

IPC分类号： G01C19/66 ,  H01S3/038 ,  H01S3/083 ,  H01S3/0975

CPC分类号： G01C19/661 ,  H01S3/038 ,  H01S3/083 ,  H01S3/0975

摘要： A radio frequency excitation system is disclosed for use in conjunction with a ring laser gyroscope. The radio frequency excitation system is comprised of a closed resonant cavity which surrounds a helical coil driven at a high radio frequency at a range of 5 to 550 megahertz. This closed resonant coil surrounds one leg of a ring laser gyroscope which is carved out and exposed so that it may be surrounded by the resonant cavity. Using such a radio frequency excitation system eliminates the need for high power DC discharge components such as cathodes and anodes, as well as problems inherent with properly sealing the cathodes and anodes to the monolithic frame of the ring laser gyroscope.

摘要翻译： 公开了一种与环形激光陀螺仪结合使用的射频激励系统。 射频激励系统包括一个封闭的谐振腔，该谐振腔围绕以5至550兆赫的范围的高射频驱动的螺旋线圈。 该闭合谐振线圈围绕环形激光陀螺仪的一条腿，该环形激光陀螺仪被雕刻出并暴露，使得其可被谐振腔包围。 使用这种射频激励系统消除了对诸如阴极和阳极的高功率DC放电元件的需要，以及将阴极和阳极适当地密封到环形激光陀螺仪的单片框架所固有的问题。

公开(公告)号：US4963026A

公开(公告)日：1990-10-16

申请号：US167512

申请日：1988-03-14

申请人： Tae W. Hahn

发明人： Tae W. Hahn

IPC分类号： G01C19/64 ,  G01C19/66 ,  H01S3/083 ,  H01S3/139

CPC分类号： G01C19/667

摘要： An apparatus and method for controlling the length of a multioscillator cavity. A photodiode mixes a pair of beams rotating in the same direction, one of said beams being substantially left circularly polarized, and the other beam being substantially right circularly polarized. A local oscillator causes the mixed beams to be modulated. An amplitude demodulator demodulates the modulated beams. An error detecting device responds to the amplitude demodulators, and an active integrator integrates the detected error. A piezotransducer responds to the output of the integrator for controlling the length of the multioscillator cavity.

摘要翻译： 一种用于控制多腔镜腔长度的装置和方法。 光电二极管混合沿相同方向旋转的一对光束，所述光束中的一个基本上被左旋圆偏振，另一个光束基本上是正交的圆偏振光。 本地振荡器使混合光束被调制。 幅度解调器解调调制束。 误差检测装置响应幅度解调器，并且有源积分器将检测到的误差进行积分。 压电传感器响应积分器的输出来控制多腔镜腔的长度。

公开(公告)号：US06212431B1

公开(公告)日：2001-04-03

申请号：US09376881

申请日：1999-08-18

申请人： Tae W. Hahn ,  Glen A. Griffith

发明人： Tae W. Hahn ,  Glen A. Griffith

IPC分类号： A61N1378

CPC分类号： A61N1/3787 ,  A61N1/36036

摘要： An external power transfer circuit (12) couples ac power having a fixed frequency into an implantable electrical circuit (14), e.g., an implantable tissue stimulator, while automatically maintaining optimum power transfer conditions. Optimum power transfer conditions exist when there is an impedance match between the external and implanted circuits. The external transfer circuit includes a directional coupler (42) and an impedance matching circuit (44). The directional coupler senses the forward power being transferred to the implant device, as well as the reverse power being reflected form the implant device (as a result of an impedance mismatch). The impedance matching circuit includes at least one variable element controlled by a control signal. The sensed reverse power is used as a feedback signal to automatically adjust the variable element in the impedance matching circuit, and hence the output impedance of the external power transfer circuit, so that it matches the input impedance of the implant device, despite variations that occur in the input impedance of the implant device due to variations in implant distance and implant load.

摘要翻译： 外部功率传输电路（12）将具有固定频率的交流电力耦合到例如可植入组织刺激器的可植入电路（14）中，同时自动保持最佳功率传输条件。 当外部和注入电路之间存在阻抗匹配时，存在最佳功率传输条件。 外部传送电路包括定向耦合器（42）和阻抗匹配电路（44）。 定向耦合器感测被传送到植入装置的正向功率，以及从植入装置反射的反向功率（由于阻抗失配）。 阻抗匹配电路包括由控制信号控制的至少一个可变元件。 感测到的反向功率用作反馈信号，以自动调整阻抗匹配电路中的可变元件，从而使外部功率传输电路的输出阻抗匹配，尽管发生了变化，但它与植入装置的输入阻抗相匹配 在植入装置的输入阻抗中，由于植入物距离和植入物负载的变化。

公开(公告)号：US20100292759A1

公开(公告)日：2010-11-18

申请号：US11089171

申请日：2005-03-24

申请人： Tae W. Hahn ,  Richard C. Ross

发明人： Tae W. Hahn ,  Richard C. Ross

IPC分类号： A61F11/04 ,  A61N1/375

CPC分类号： A61N1/375 ,  A61N1/0541 ,  A61N1/36036

摘要： Disclosed is a cochlear stimulation system and associated methods that utilizes a magnetic field sensor to determine the status of magnetically-coupled components. The cochlear stimulation system includes an implantable portion positionable beneath the skin of a patient and an external portion positionable outside the skin of the patient. The implantable portion includes a multi-electrode array having a plurality of electrodes configured to be placed in cochlear duct of a patient and an internal magnet. The external portion includes a speech processor configured to generate control signals in response to received sound signals and an external magnet. The external magnet and the internal magnet generate an attractive magnetic force that maintains the external portion in position relative to the internal portion against the scalp of the patient. The cochlear stimulation system further includes a magnetic field sensor configured to sense the value of a magnetic field generated by the external magnet and the internal magnet in order to monitor changes in the magnetic field.

摘要翻译： 公开了一种使用磁场传感器来确定磁耦合部件的状态的人工耳蜗刺激系统和相关方法。 耳蜗刺激系统包括可定位在患者皮肤下方的可植入部分和可定位在患者皮肤外部的外部部分。 可植入部分包括具有多个电极的多电极阵列，其被配置为放置在患者的耳蜗管内和内部磁体中。 外部部分包括被配置为响应于接收到的声音信号和外部磁体产生控制信号的语音处理器。 外部磁体和内部磁体产生吸引力的磁力，其将外部部分相对于内部部分保持在与患者头皮相对的位置上。 耳蜗刺激系统还包括磁场传感器，其被配置为感测由外部磁体和内部磁体产生的磁场的值，以便监视磁场的变化。

公开(公告)号：US5208653A

公开(公告)日：1993-05-04

申请号：US741291

申请日：1991-08-06

申请人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

发明人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

IPC分类号： G01C19/66 ,  H01S3/139

CPC分类号： H01S3/139 ,  G01C19/665

摘要： Disclosed herein is a Digitally Controlled Cavity Length Control System comprising, in a preferred embodiment, an adaptive servo-loop for cavity length, modulation depth and amplitude control, and of the multioscillator ring laser gyroscope; thereby, permitting the simultaneous control of these elements. The cavity length control of the multioscillator, by including a variable RF detector gain, allows the operation of the gyroscope in a slightly detuned fashion to minimize magnetic sensitivity. In this manner, the multioscillator gyroscope may be maintained at a stable operating point suitable for modeling.

摘要翻译： 本文公开了一种数字控制腔长度控制系统，在优选实施例中，包括用于腔长度，调制深度和幅度控制的自适应伺服回路以及多振荡器环形激光陀螺仪; 从而允许同时控制这些元件。 通过包括可变RF检测器增益，多谐振荡器的腔长度控制允许陀螺仪以稍微失谐的方式操作以最小化磁敏感度。 以这种方式，多谐振荡器陀螺仪可以保持在适于建模的稳定工作点。

公开(公告)号：US5189487A

公开(公告)日：1993-02-23

申请号：US796567

申请日：1991-11-21

申请人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

发明人： John G. Mark ,  Daniel A. Tazartes ,  Tae W. Hahn

IPC分类号： G01C19/66

CPC分类号： G01C19/667

摘要： A rotational sensing system for a Multioscillator ring laser gyroscope is disclosed herein that can operate with a simple upright symmetric optics mechanism, where the required signal separation is performed fully electronically, with the use of a local oscillator. The technique allows for rotational rate and direction detection, as well as cavity length control, with a minimum of cross-talk.

摘要翻译： 本文公开了一种用于多振荡器环形激光陀螺仪的旋转感测系统，其可以使用简单的直立对称光学机构来操作，其中使用本地振荡器完全电子地执行所需的信号分离。 该技术允许旋转速率和方向检测以及腔长度控制，具有最小的串扰。