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    Nuclear magnetic resonance apparatus having a controllable detector
    2.
    发明申请
    Nuclear magnetic resonance apparatus having a controllable detector 失效
    具有可控检测器的核磁共振装置

    公开(公告)号：US20050099182A1

    公开(公告)日：2005-05-12

    申请号：US10919327

    申请日：2004-08-17

    Applicant: Minseok Park ,  Michiya Okada ,  Hiroshi Morita

    Inventor： Minseok Park ,  Michiya Okada ,  Hiroshi Morita

    IPC: G01R33/32 ,  G01R33/36 ,  G01V3/00

    CPC classification number: G01R33/3621

    Abstract: In an NMR apparatus having an analog-to-digital converter for converting the voltage signal V(t) to a digital signal, a reference signal generator for generating reference waves which are digital signals, and a quadrature detector for performing a quadrature detection operation, a detection controller for changing a frequency of or of the reference waves or a time interval of A which is a time interval between data points of digitized NMR signals and also a time interval between data points of the reference waves during detection is installed and furthermore, a storage device for preserving the voltage signal V(t) converted to a digital amount at least until the quadrature detector or the reference signal generator changes the frequency or of the reference waves or the time interval A is installed between the analog-digital converter and the quadrature detector.

    Abstract translation: 在具有用于将电压信号V（t）转换为数字信号的模拟 - 数字转换器的NMR装置中，用于产生作为数字信号的参考波的参考信号发生器和用于执行正交检测操作的正交检测器， 用于改变参考波的频率的检测控制器或作为数字化NMR信号的数据点之间的时间间隔的A的时间间隔以及检测期间参考波的数据点之间的时间间隔的安装， 至少直到正交检测器或参考信号发生器改变频率或参考波，或者将时间间隔A安装在模拟数字转换器和 正交检测器。

    Nuclear magnetic resonance apparatus having a controllable detector
    8.
    发明授权
    Nuclear magnetic resonance apparatus having a controllable detector 失效
    具有可控检测器的核磁共振装置

    公开(公告)号：US07126336B2

    公开(公告)日：2006-10-24

    申请号：US10919327

    申请日：2004-08-17

    Applicant: Minseok Park ,  Michiya Okada ,  Hiroshi Morita

    Inventor： Minseok Park ,  Michiya Okada ,  Hiroshi Morita

    IPC: G01V3/00

    CPC classification number: G01R33/3621

    Abstract: In an NMR apparatus having an analog-to-digital converter for converting the voltage signal V(t) to a digital signal, a reference signal generator for generating reference waves which are digital signals, and a quadrature detector for performing a quadrature detection operation, a detection controller for changing a frequency of ωr of the reference waves or a time interval of Δ which is a time interval between data points of digitized NMR signals and also a time interval between data points of the reference waves during detection is installed and furthermore, a storage device for preserving the voltage signal V(t) converted to a digital amount at least until the quadrature detector or the reference signal generator changes the frequency ωr of the reference waves or the time interval Δ is installed between the analog-digital converter and the quadrature detector.

    Abstract translation: 在具有用于将电压信号V（t）转换为数字信号的模拟 - 数字转换器的NMR装置中，用于产生作为数字信号的参考波的参考信号发生器和用于执行正交检测操作的正交检测器， 用于改变参考波的ω的频率的检测控制器或作为数字化NMR信号的数据点之间的时间间隔的Delta以及检测期间的参考波的数据点之间的时间间隔的Delta的时间间隔，此外， 至少直到正交检测器或参考信号发生器改变参考波的频率ω或时间间隔Delta为止，保持转换成数字量的电压信号V（t）的存储装置，其中，模数转换器和 正交检测器。

    Direct Digital Synthesizer and Nuclear Magnetic Resonance Instrument Using the Same
    10.
    发明申请
    Direct Digital Synthesizer and Nuclear Magnetic Resonance Instrument Using the Same 失效
    直接数字合成器和使用它的核磁共振仪器

    公开(公告)号：US20080284470A1

    公开(公告)日：2008-11-20

    申请号：US12120385

    申请日：2008-05-14

    Applicant: Minseok Park ,  Michiya Okada ,  Shuya Hagiwara ,  Hideki Tanaka

    Inventor： Minseok Park ,  Michiya Okada ,  Shuya Hagiwara ,  Hideki Tanaka

    IPC: H03B21/00 ,  G01V3/14

    CPC classification number: G01R33/3607

    Abstract: A DDS (direct digital synthesizer) remarkably increased in the number of frequencies which can be output while maintaining the phase coherency, and an NMR instrument using such a DDS are provided. A DDS including phase accumulators and a phase-to-amplitude modulator is provided with a plurality of phase accumulators operating with fixed phase implements which are equal to powers of 2, a controller for outputting each bit of a frequency tuning word as control data, a plurality of switches for outputting an output of an associated one of the phase accumulators when an associated one of the control data supplied from the controller is 1 and outputting 0 when the associated one of the control data is 0, and an adder for adding up outputs of the switches.

    Abstract translation: DDS（直接数字合成器）在保持相位一致性的同时可以输出的频率数量显着增加，并且提供使用这种DDS的NMR仪器。 包括相位累加器和相位到幅度调制器的DDS设置有多个相位累加器，其以等于2的功率的固定相位工具操作;控制器，用于输出频率调谐字的每个位作为控制数据; 多个开关，用于当从所述控制器提供的所述控制数据中的相关一个之一输出相关联的一个所述相位累加器的输出，并且当所述控制数据中的相关一个为0时输出0;以及加法器， 的开关。

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