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    OPTICAL TRANSCEIVER USING HETERODYNE DETECTION AND A TRANSMITTED REFERENCE CLOCK
    4.
    发明申请
    OPTICAL TRANSCEIVER USING HETERODYNE DETECTION AND A TRANSMITTED REFERENCE CLOCK 失效
    光学收发器使用异常检测和发送的参考时钟

    公开(公告)号：US20080145063A1

    公开(公告)日：2008-06-19

    申请号：US12014019

    申请日：2008-01-14

    申请人： Ji Li ,  Laurence J. Newell ,  Tin Vo ,  Ting K. Yee ,  Peter H. Chang ,  Robert K. McElheny

    发明人： Ji Li ,  Laurence J. Newell ,  Tin Vo ,  Ting K. Yee ,  Peter H. Chang ,  Robert K. McElheny

    IPC分类号： H04B10/00

    CPC分类号： H04B10/64 ,  H04B10/40 ,  H04B10/6165

    摘要： A heterodyne communication system uses coherent data modulation that is resistant to phase noise. In particular, a pilot tone and reference clock signal are transmitted along with the modulated data to form the basis of an electrical demodulation local oscillator at the receiver. The pilot tone and/or reference clock signal carry phase noise which is correlated with the phase noise in the data signal. At the receiver, the local oscillator is generated from the pilot tone and reference clock signal in a manner so that the local oscillator also has phase noise which is correlated with the phase noise in the data signal. Thus, the two noise components can be used to cancel each other during demodulation of the data signal using the local oscillator.

    摘要翻译： 外差通信系统使用耐相位噪声的相干数据调制。 特别地，导频和参考时钟信号与调制数据一起发送，以形成接收机处的电解调本地振荡器的基础。 导频音和/或参考时钟信号携带与数据信号中的相位噪声相关的相位噪声。 在接收器处，本地振荡器以导频和参考时钟信号的方式产生，使得本地振荡器也具有与数据信号中的相位噪声相关的相位噪声。 因此，使用本地振荡器在解调数据信号期间可以使用两个噪声分量来相互抵消。

    Optical transceiver using heterodyne detection and a transmitted reference clock
    5.
    发明授权
    Optical transceiver using heterodyne detection and a transmitted reference clock 有权
    使用外差检测和发送参考时钟的光收发器

    公开(公告)号：US07346279B1

    公开(公告)日：2008-03-18

    申请号：US10107085

    申请日：2002-03-25

    申请人： Ji Li ,  Laurence J. Newell ,  Tin Vo ,  Ting K. Yee ,  Peter H. Chang ,  Robert K. McElheny

    发明人： Ji Li ,  Laurence J. Newell ,  Tin Vo ,  Ting K. Yee ,  Peter H. Chang ,  Robert K. McElheny

    IPC分类号： H04B10/08 ,  H04B10/00

    CPC分类号： H04B10/64 ,  H04B10/40 ,  H04B10/6165

    摘要： A heterodyne communication system uses coherent data modulation that is resistant to phase noise. In particular, a pilot tone and reference clock signal are transmitted along with the modulated data to form the basis of an electrical demodulation local oscillator at the receiver. The pilot tone and/or reference clock signal carry phase noise which is correlated with the phase noise in the data signal. At the receiver, the local oscillator is generated from the pilot tone and reference clock signal in a manner so that the local oscillator also has phase noise which is correlated with the phase noise in the data signal. Thus, the two noise components can be used to cancel each other during demodulation of the data signal using the local oscillator.

    摘要翻译： 外差通信系统使用耐相位噪声的相干数据调制。 特别地，导频和参考时钟信号与调制数据一起发送，以形成接收机处的电解调本地振荡器的基础。 导频音和/或参考时钟信号携带与数据信号中的相位噪声相关的相位噪声。 在接收器处，本地振荡器以导频和参考时钟信号的方式产生，使得本地振荡器也具有与数据信号中的相位噪声相关的相位噪声。 因此，使用本地振荡器在解调数据信号期间可以使用两个噪声分量来相互抵消。

    Optical transceiver using heterodyne detection and a transmitted reference clock
    6.
    发明授权
    Optical transceiver using heterodyne detection and a transmitted reference clock 失效
    使用外差检测和发送参考时钟的光收发器

    公开(公告)号：US07620318B2

    公开(公告)日：2009-11-17

    申请号：US12014019

    申请日：2008-01-14

    申请人： Ji Li ,  Laurence J. Newell ,  Tin Vo ,  Ting K. Yee ,  Peter H. Chang ,  Robert K. McElheny

    发明人： Ji Li ,  Laurence J. Newell ,  Tin Vo ,  Ting K. Yee ,  Peter H. Chang ,  Robert K. McElheny

    IPC分类号： H04B10/08 ,  H04B10/00

    CPC分类号： H04B10/64 ,  H04B10/40 ,  H04B10/6165

    摘要： A heterodyne communication system uses coherent data modulation that is resistant to phase noise. In particular, a pilot tone and reference clock signal are transmitted along with the modulated data to form the basis of an electrical demodulation local oscillator at the receiver. The pilot tone and/or reference clock signal carry phase noise which is correlated with the phase noise in the data signal. At the receiver, the local oscillator is generated from the pilot tone and reference clock signal in a manner so that the local oscillator also has phase noise which is correlated with the phase noise in the data signal. Thus, the two noise components can be used to cancel each other during demodulation of the data signal using the local oscillator.

    摘要翻译： 外差通信系统使用耐相位噪声的相干数据调制。 特别地，导频和参考时钟信号与调制数据一起发送，以形成接收机处的电解调本地振荡器的基础。 导频音和/或参考时钟信号携带与数据信号中的相位噪声相关的相位噪声。 在接收器处，本地振荡器以导频和参考时钟信号的方式产生，使得本地振荡器也具有与数据信号中的相位噪声相关的相位噪声。 因此，使用本地振荡器在解调数据信号期间可以使用两个噪声分量来相互抵消。

    Ultrasound apparatus and method for amplifying transmit signals
    9.
    发明授权
    Ultrasound apparatus and method for amplifying transmit signals 失效
    用于放大发射信号的超声装置和方法

    公开(公告)号：US6028484A

    公开(公告)日：2000-02-22

    申请号：US21083

    申请日：1998-02-10

    申请人： Christopher R. Cole ,  Laurence J. Newell

    发明人： Christopher R. Cole ,  Laurence J. Newell

    IPC分类号： G01S7/523 ,  G01S7/534 ,  H03F3/21 ,  H03F3/68 ,  H03F3/04 ,  H03F3/45

    CPC分类号： H03F3/211 ,  G01S7/523 ,  G01S7/534

    摘要： A method and system for amplifying an ultrasonic transmit signal is provided. A first amplifier stage has a first supply voltage input and receives transmit signals. A second amplifier stage has a second supply voltage input and receives transmit signals in parallel with the first amplifier stage. Amplified transmit signals are output from one of the first and second amplifier stages. The supply voltage inputs are supplied with fixed voltages. The first amplifier stage is associated with PW operation and a higher supply voltage than the second amplifier stage. The second amplifier stage is associated with CW operation.

    摘要翻译： 提供了一种用于放大超声波发射信号的方法和系统。 第一放大器级具有第一电源电压输入并接收发送信号。 第二放大器级具有第二电源电压输入并且接收与第一放大器级并联的发送信号。 放大的发射信号从第一和第二放大器级之一输出。 电源电压输入端提供固定电压。 第一放大器级与PW操作相关联，并且具有比第二放大器级更高的电源电压。 第二放大器级与CW操作相关联。

    Method and apparatus for sensing field strength signals to estimate location of a wireless implantable marker
    10.
    发明授权
    Method and apparatus for sensing field strength signals to estimate location of a wireless implantable marker 有权
    用于感测场强信号以估计无线可植入标记的位置的方法和装置

    公开(公告)号：US07926491B2

    公开(公告)日：2011-04-19

    申请号：US10382123

    申请日：2003-03-04

    申请人： J. Nelson Wright ,  Laurence J. Newell

    发明人： J. Nelson Wright ,  Laurence J. Newell

    IPC分类号： A61B19/00

    CPC分类号： G01V15/00 ,  A61B34/20 ,  A61B90/36 ,  A61B90/39 ,  A61B90/98 ,  A61B2034/2051 ,  Y10T29/49826

    摘要： Embodiments of the invention are directed to an apparatus for use in a system that senses an excitable wireless target capable of being implanted in a body or tissue. The apparatus includes multiple electromagnetic field sensors arranged approximately in a common plane, and multiple sense signal output paths coupled to the sensors. Each one of the sensors and corresponding output paths is configured to provide an output signal representing at least a portion of an electromagnetic field provided by the marker, where the output signal is proportional to a component of the field at the sensor, where that component is substantially perpendicular to the plane. Various other configurations regarding this apparatus, as well as the overall system and methods of exciting and receiving signals from wireless markers, are also disclosed.

    摘要翻译： 本发明的实施例涉及一种用于感测能够植入身体或组织中的可兴奋无线目标的系统中的装置。 该装置包括大致在公共平面上布置的多个电磁场传感器，以及耦合到传感器的多个感测信号输出路径。 传感器和对应的输出路径中的每一个被配置为提供表示由标记提供的电磁场的至少一部分的输出信号，其中输出信号与传感器处的场的分量成比例，其中该分量是 基本上垂直于该平面。 还公开了关于该装置的各种其它配置，以及来自无线标记的激励和接收信号的整体系统和方法。