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公开(公告)号：US4888553A
公开(公告)日：1989-12-19
申请号：US228633
申请日：1988-08-04
申请人： Robert S. Codrington
发明人： Robert S. Codrington
IPC分类号： G01R33/28
CPC分类号： G01R33/28
摘要： Synchronous apparatus capable of a variety of operational states responds to a sequence of digital control words, each specifying a desired state and persistence time of the state. The control words are furnished to the apparatus from a self-clocked FIFO in accord with the persistence code. A selected sub-sequence of digital control words in ROM is placed in an auxiliary FIFO upon detection of a corresponding token in the main sequence and control is passed to the auxiliary FIFO to furnish the sub-sequence to the apparatus. At the conclusion of the sub-sequence control is returned to the main FIFO and the main sequence is resumed.
摘要翻译： 能够具有各种操作状态的同步装置响应一系列数字控制字，每个数字控制字指定状态的期望状态和持续时间。 根据持久性代码，控制字从自定时FIFO提供给设备。 在检测到主序列中的相应令牌时，将ROM中的数字控制字的所选子序列放置在辅助FIFO中，并且将控制传递到辅助FIFO以向该装置提供子序列。 在子序列结束时，控制返回主FIFO，并恢复主序列。
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公开(公告)号：US4764894A
公开(公告)日：1988-08-16
申请号：US136499
申请日：1987-12-28
申请人： Robert S. Codrington
发明人： Robert S. Codrington
CPC分类号： G01R33/28
摘要： Synchronous apparatus capable of a variety of operational states responds to a sequence of digital control words, each specifying a desired state and persistence time of the state. The control words are furnished to the apparatus from a self-clocked FIFO in accord with the persistence code. A selected sub-sequence of digital control words in ROM is placed in an auxiliary FIFO upon detection of a corresponding token in the main sequence and control is passed to the auxiliary FIFO to furnish the sub-sequence to the apparatus. At the conclusion of the sub-sequence control is returned to the main FIFO and the main sequence is resumed.
摘要翻译： 能够具有各种操作状态的同步装置响应一系列数字控制字，每个数字控制字指定状态的期望状态和持续时间。 根据持久性代码，控制字从自定时FIFO提供给设备。 在检测到主序列中的相应令牌时，将ROM中的数字控制字的所选子序列放置在辅助FIFO中，并且将控制传递到辅助FIFO以向该装置提供子序列。 在子序列结束时，控制返回主FIFO，并恢复主序列。
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公开(公告)号：US5166621A
公开(公告)日：1992-11-24
申请号：US603966
申请日：1990-10-26
申请人： Robert S. Codrington , Alan R. Rath
发明人： Robert S. Codrington , Alan R. Rath
CPC分类号： G01R33/3635
摘要： A saddle coil for multiple tuned response is realized by a segmented sequence of first LC elements each tuned to exhibit a low impedance at .omega..sub.1 and a second set of LC elements, each tuned to exhibit a low impedance at .omega..sub.2, at least some of said first set of LC elements having one of said second LC elements in parallel therewith.
摘要翻译： 用于多重调谐响应的鞍形线圈通过分段序列的第一LC元件实现，每个第一LC元件被调谐为在ω1处呈现低阻抗，第二组LC元件被调谐为在ω2处呈现低阻抗，至少部分 所述第一组LC元件具有与其平行的所述第二LC元件中的一个。
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公开(公告)号：US5038105A
公开(公告)日：1991-08-06
申请号：US477687
申请日：1990-02-09
申请人： Robert S. Codrington , Alan R. Rath
发明人： Robert S. Codrington , Alan R. Rath
CPC分类号： G01R33/3635
摘要： A double-tuned circuit is realized from 1/2.lambda..sub.1 transmission lines for connecting a pair of inductors in series at a first frequency and in parallel for a second frequency where said first and second frequencies are in the ratio of a power of two.
摘要翻译： 双1/2调制电路由1/2λ1传输线实现，用于将第一和第二频率串联的一对电感器以第二频率串联连接，其中所述第一和第二频率的比值为二。
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公开(公告)号：US4607224A
公开(公告)日：1986-08-19
申请号：US623746
申请日：1984-06-22
申请人： Robert S. Codrington
发明人： Robert S. Codrington
IPC分类号： G01R33/20 , G01R33/32 , G01R33/34 , G01R33/345 , G01R33/36
CPC分类号： G01R33/345 , G01R33/34046 , G01R33/34007 , G01R33/34092 , G01R33/3628
摘要： A sample cavity resonator for NMR spectroscopy contains a pair of diametrically opposed paraxial post structures approximating a single turn inductance about the axially positioned sample. The posts are separately excited in 180 degree relative phases by respective coupling loops spaced between the corresponding post and the cavity wall. A slideable piston structure capacitively couples to the posts and provides cavity tuning.
摘要翻译： 用于NMR光谱的样品空腔谐振器包含一对径向相对的近轴柱结构，其近似于轴向定位的样品的单圈电感。 通过在相应的柱和空腔壁之间间隔开的相应联接回路，柱在180度相对相中分开激励。 可滑动的活塞结构电容耦合到柱，并提供空腔调谐。
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公开(公告)号：US4572198A
公开(公告)日：1986-02-25
申请号：US621635
申请日：1984-06-18
申请人： Robert S. Codrington
发明人： Robert S. Codrington
CPC分类号： A61M25/0127 , A61B5/055 , G01R33/285 , A61B2090/3958
摘要： A magnetic resonance catheter system combining with a magnetic resonance imaging device, a catheter including a coil winding for exciting a weak magnetic field at the tip of the catheter. The location of the catheter tip is thereby obtained in cooperation with the magnetic resonance imager.
摘要翻译： 一种与磁共振成像装置组合的磁共振导管系统，包括用于激发导管末端的弱磁场的线圈绕组的导管。 因此，与磁共振成像仪协同地获得导管尖端的位置。
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公开(公告)号：US4191919A
公开(公告)日：1980-03-04
申请号：US907650
申请日：1978-05-22
CPC分类号： G01R33/28
摘要： A Fourier transform NMR spectrometer incorporates a digital acquisition processor which provides a sequence of gating states specifying properties of the excitation, decoupling, and homogeneity spoiling pulses, lock channel operation and the like. Each gating state, together with the selected persistance time for the corresponding state, occupies one of a sequence of words supplied by the acquisition processor to a FIFO buffer. Timing control means, initialized from the persistance time portion of the current FIFO word, determines the time interval during which said gating state information is available at an output port, after which the next sequential FIFO word is advanced to the output port. NMR response is accumulated and averaged in a dual port fast semiconductor memory. The semiconductor memory is independently accessible to a host computer through a direct memory port. After each data block of a predetermined number of transients has been so processed, the entire updated cumulative spectrum is copied into non-volatile storage to secure the data against loss or distortion.
摘要翻译： 傅里叶变换NMR光谱仪包括数字采集处理器，其提供指定激励，去耦和均匀性破坏脉冲的特性的门控状态序列，锁定通道操作等。 每个选通状态连同所选择的相应状态的持续时间一起占据由采集处理器提供给FIFO缓冲器的一串字。 从当前FIFO字的持续时间部分初始化的定时控制装置确定所述选通状态信息在输出端口可用的时间间隔，之后下一个顺序FIFO字提前到输出端口。 在双端口快速半导体存储器中积累和平均NMR响应。 半导体存储器可通过直接存储器端口独立地访问主计算机。 在已经如此处理预定数量的瞬变的每个数据块之后，将整个更新的累积频谱复制到非易失性存储器中以确保数据免受丢失或失真。
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