专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5396224A Telemetered patient location system and method 失效
标题翻译：遥测患者定位系统和方法
公开(公告)号：US5396224A
公开(公告)日：1995-03-07
申请号：US796483
申请日：1991-11-22
申请人： John N. Dukes , J. Evan Deardorff , James L. Miller
发明人： John N. Dukes , J. Evan Deardorff , James L. Miller
IPC分类号： G01S19/11 , G07C9/00 , G08B1/08 , G08B23/00 , G08B25/04 , G08B25/10 , H04Q7/34 , H04B7/00
CPC分类号： G07C9/00111
摘要： A system and method for locating patients in a hospital using M different frequency patient transmitters and N fixed location antennas within the hospital for receiving the patient signals. The received signals for each antenna are separated from the signals received by the other N-1 antennas, and the signal strength of each signal received by each antenna is measured. The received signal strength of each antenna is processed to determine which of the antennas received the strongest signals from each of the patient transmitters. Alternatively, the approximate location within the hospital of each operating patient transmitter is determined since the antennas are in fixed locations and the layout out of the hospital is known. In other embodiments, each of the antennas have a different modulation pattern to enable identification of which of the antennas receives which signals from the patient transmitters. The M signals received by the N antennas are separated by the frequencies of the patient transmitters with each of the separated signals being a composite signal having a single frequency and modulation components from each of the N antennas. Then the signal strength of each of the separated signals is measured, and the relative contribution to the measured signal strength from each of the N antennas is determined. Finally, the relative contribution information for each patient transmitter frequency from each antenna is processed to determine which of the antennas received the strongest signals from each of the patient transmitters to locate the patient relative to particular antennas.
摘要翻译：一种用于在医院内定位患者的系统和方法，其使用医院内的M个不同频率的患者发射器和N个固定位置天线来接收患者信号。每个天线的接收信号与其他N-1个天线接收的信号分离，并且测量每个天线接收的每个信号的信号强度。对每个天线的接收信号强度进行处理，以确定哪些天线从每个病人发射机接收最强的信号。或者，确定每个操作的患者发射器的医院内的大致位置，因为天线处于固定位置，并且医院外的布局是已知的。在其他实施例中，每个天线具有不同的调制模式，以能够识别哪些天线接收来自患者发射机的信号。由N个天线接收的M个信号由患者发射机的频率分开，其中每个分离的信号是具有单个频率的复合信号和来自N个天线中的每一个的调制分量。然后测量每个分离的信号的信号强度，并且确定来自每个N个天线的测量信号强度的相对贡献。最后，处理来自每个天线的每个患者发射器频率的相对贡献信息，以确定从每个患者发射器接收到的最强信号中的哪些天线相对于特定天线定位患者。

2. 发明授权

US5205296A Uterine contraction detection 失效
标题翻译：子宫收缩检测
公开(公告)号：US5205296A
公开(公告)日：1993-04-27
申请号：US885579
申请日：1992-05-19
申请人： John N. Dukes , Alan P. Greenstein
发明人： John N. Dukes , Alan P. Greenstein
IPC分类号： A61B5/03
CPC分类号： A61B5/4356 , A61B5/033
摘要： A system for tracing uterine contraction is disclosed. The system comprises a probe and an electronics module. The electronics module includes a drive circuit and an output section having a frequency counter. The output section also includes a strip-chart recorder driven by a frequency-to-voltage converter. The probe includes an electro-mehanical transducer which is driven at resonance by the action of the drive circuit. When the probe contacts the abdomen of a pregnant subject, changes in the mechanical impedance of bodily tissue during a contraction affect the resonant frequency of the probe and thus the frequency output by the drive circuit. This frequency can be read directly from the frequency counter and recorded on the strip-chart so that contractions can be traced.
摘要翻译：公开了一种追踪子宫收缩的系统。该系统包括探针和电子模块。电子模块包括驱动电路和具有频率计数器的输出部分。输出部分还包括由频率 - 电压转换器驱动的条形图记录器。探头包括一个电磁换能器，它通过驱动电路的作用在共振下被驱动。当探针接触怀孕对象的腹部时，收缩期间身体组织的机械阻抗的变化会影响探头的谐振频率，从而影响驱动电路输出的频率。该频率可以直接从频率计数器读取并记录在条形图上，从而可以跟踪收缩。

3. 发明授权

US4603301A Amplitude insensitive delay lines in a frequency modulated signal detector 失效
标题翻译：频率调制信号检测器中的幅度不敏感延迟线
公开(公告)号：US4603301A
公开(公告)日：1986-07-29
申请号：US628067
申请日：1984-07-05
申请人： John N. Dukes , Richard A. Baumgartner , Thomas A. Shoup
发明人： John N. Dukes , Richard A. Baumgartner , Thomas A. Shoup
IPC分类号： H03K9/00 , H03D3/02 , H03D3/18 , H03K5/04 , H03K9/06 , H03D1/00
CPC分类号： H03D3/02
摘要： A circuit for detecting a Frequency Modulated (FM) signal is provided. An amplitude limited FM signal is propated through a delay circuit comprising a plurality of cascaded saturating inverters. A Boolean logic "Exclusive Or" (XOR) operation is performed between the FM signal before entering the delay circuit and after exiting the delay circuit.
摘要翻译：提供了用于检测频率调制（FM）信号的电路。通过包括多个级联饱和反相器的延迟电路来提供限幅FM信号。在进入延迟电路之前和退出延迟电路之后，在FM信号之间执行布尔逻辑“异或”（XOR）操作。

4. 发明授权

US5016642A Slow motion cardiac imaging 失效
标题翻译：慢动作心脏成像
公开(公告)号：US5016642A
公开(公告)日：1991-05-21
申请号：US508377
申请日：1990-04-11
申请人： John N. Dukes , Paul Lum , John D. Larson
发明人： John N. Dukes , Paul Lum , John D. Larson
IPC分类号： A61B8/08 , G01S7/52
CPC分类号： A61B8/08 , G01S7/52055
摘要： Apparatus and method for representing slow motion of an oscillating heart by forming strobed images of the heart at a sequence of uniformly spaced times with controllable time interval lengths that are related to, but not identical to, the primary oscillation period T of the heart. The heart images may be formed at a sequence of times t=t.sub.0 +kMT.sub.h /N where t.sub.0 is an initial time, N is a positive integer, k=1,2, . . . , N-1 and M is a positive integer. Alternatively, the heart images may be formed at a sequence of times determined in part by the current oscillation cycle of the heart.
摘要翻译：通过以与心脏的主振荡周期T相关而不是相同的可控时间间隔长度以均匀间隔的顺序形成心脏的选通图像来表示振荡心脏的慢动作的装置和方法。心脏图像可以以时间序列t = t0 + kMTh / N形成，其中t0是初始时间，N是正整数，k = 1,2。。。，N-1和M是正整数。或者，可以以部分由心脏的当前振荡周期确定的时间序列形成心脏图像。

5. 发明授权

US4633308A Amplitude insensitive delay lines in an accoustic imaging system 失效
标题翻译：声学成像系统中的幅度不敏感延迟线
公开(公告)号：US4633308A
公开(公告)日：1986-12-30
申请号：US628063
申请日：1984-07-05
申请人： John N. Dukes , Richard A. Baumgartner , Ian Bennett , Richard D. Pering , George A. Fisher
发明人： John N. Dukes , Richard A. Baumgartner , Ian Bennett , Richard D. Pering , George A. Fisher
IPC分类号： G01S15/04 , A61B8/00 , A61B8/14 , G01N29/06 , G01S7/52 , G01S7/523 , G01S15/89 , H03H11/26 , H03K5/00 , H03K5/13 , H03K7/06 , H03K7/08 , H04N7/18
CPC分类号： G01S7/52003 , H03H11/26 , H03K5/131 , H03K7/06 , H03K7/08 , H03K2005/00195
摘要： A delay circuit for providing signal delay within an acoustic imaging system is provided. Reflected acoustic signals are transformed into electrical signals and are used to reproduce images of objects. Delay lines along the electrical signal path are used to focus the images compensating for asynchronism of electrical signals caused by variations in the length of acoustic signal paths.
摘要翻译：提供了一种用于在声学成像系统内提供信号延迟的延迟电路。反射的声信号被转换成电信号，并用于再现对象的图像。沿着电信号路径的延迟线被用于对补偿由声信号路径的长度变化引起的电信号异步的图像进行聚焦。

6. 发明授权

US4638191A Amplitude insensitive delay line 失效
标题翻译：幅度不敏感的延迟线
公开(公告)号：US4638191A
公开(公告)日：1987-01-20
申请号：US628069
申请日：1984-07-05
申请人： Richard A. Baumgartner , John N. Dukes , George A. Fisher
发明人： Richard A. Baumgartner , John N. Dukes , George A. Fisher
IPC分类号： H01L21/8234 , G01S7/52 , H01L27/06 , H01L27/088 , H03H11/26 , H03K5/00 , H03K5/13 , H03K7/06 , H03K7/08 , H03K17/284 , H03K17/693
CPC分类号： G01S7/52003 , H03H11/26 , H03K5/131 , H03K7/06 , H03K7/08 , H03K2005/00195
摘要： A delay circuit comprising a plurality of cascaded saturating circuit elements is provided. The delay circuit may be incorporated in such circuits as modulators and demodulators to provide signal delay.
摘要翻译：提供包括多个级联饱和电路元件的延迟电路。延迟电路可以结合在诸如调制器和解调器的电路中以提供信号延迟。

7. 发明授权

US4716363A Exponential decay time constant measurement using frequency of offset phase-locked loop: system and method 失效
标题翻译：使用偏移锁相环频率的指数衰减时间常数测量：系统和方法
公开(公告)号：US4716363A
公开(公告)日：1987-12-29
申请号：US47818
申请日：1987-05-08
申请人： John N. Dukes , William F. Carlsen, Jr. , Richard J. Pittaro
发明人： John N. Dukes , William F. Carlsen, Jr. , Richard J. Pittaro
IPC分类号： G04F10/06 , A61B5/145 , A61B5/1459 , A61B10/00 , G01N21/31 , G01N21/64 , G01N25/00 , G01R23/00 , G06Q50/00 , G01R23/16
CPC分类号： G01R23/00 , G01N21/6408 , G01N25/00 , G01N2021/3144 , G01N21/6428 , Y10T436/207497 , Y10T436/209163
摘要： Oxygen determination based on luminescence quenching of fluorescent dye is effected by using the frequency output of an offset-phase locked loop to calculate the time constant for the exponential decay of fluorescence. An offset phase angle between a periodic stimulus signal used to excite the dye and a response signal based on fluorescence detection is predetermined to optimize signal-to-noise ratio for a wide range of time constants. An offset-phase locked loop is used to vary the frequency of a periodic stimulus signal until the predetermined phase relationship is established. Where the stimulus and response signals are substantially sinusoidal, the offset phase angle is ideally about 49.3.degree., although substantially optimal performance is achieved using a more conveniently generated 45.degree.. The 45.degree. angle offset can also be used with a square-wave stimulus signal.

8. 发明授权

US4703251A Testing and calibrating of amplitude insensitive delay lines 失效
标题翻译：振幅不敏感延迟线的测试和校准
公开(公告)号：US4703251A
公开(公告)日：1987-10-27
申请号：US902995
申请日：1986-09-02
申请人： Richard A. Baumgartner , John N. Dukes , George A. Fisher
发明人： Richard A. Baumgartner , John N. Dukes , George A. Fisher
IPC分类号： G01S7/52 , H03H11/26 , H03K5/00 , H03K5/13 , H03K7/06 , H03K7/08 , G01R27/28 , H03K5/06
CPC分类号： H03K5/131 , G01S7/52003 , H03H11/26 , H03K7/06 , H03K7/08 , H03K2005/00195
摘要： A delay circuit comprising a plurality of cascaded saturating circuit elements is provided. The delay circuit may be incorporated in such circuits as modulators and demodulators to provide signal delay.
摘要翻译：提供包括多个级联饱和电路元件的延迟电路。延迟电路可以结合在诸如调制器和解调器的电路中以提供信号延迟。

9. 发明授权

US4658225A Amplitude insensitive delay lines in a transversal filter 失效
标题翻译：横向滤波器中的幅度不敏感延迟线
公开(公告)号：US4658225A
公开(公告)日：1987-04-14
申请号：US628066
申请日：1984-07-05
申请人： John N. Dukes , Richard A. Baumgartner
发明人： John N. Dukes , Richard A. Baumgartner
IPC分类号： H03H11/26 , H03H15/00 , H04B3/04 , H03H17/06 , H03C1/36
CPC分类号： H03H15/00 , H03H11/26
摘要： A transversal filter is provided which includes a delay circuit comprising a plurality of cascaded saturating circuit elements. The delay circuit has a series of taps from which signals with varying delays are obtained. The obtained signals are combined to form filtered signal(s).
摘要翻译：提供了一种横向滤波器，其包括包括多个级联饱和电路元件的延迟电路。延迟电路具有一系列抽头，从中获得具有变化的延迟的信号。获得的信号被组合以形成滤波信号。

10. 发明授权

US4573475A Receiving radiation from loops in a common plane for monitoring hospital patients leadlessly 失效
标题翻译：在公共飞机上接收辐射，无障碍地监测医院病人
公开(公告)号：US4573475A
公开(公告)日：1986-03-04
申请号：US671399
申请日：1984-11-15
申请人： John N. Dukes , Edwin B. Merrick
发明人： John N. Dukes , Edwin B. Merrick
IPC分类号： A61B10/00 , A61B5/00 , A61B5/055 , H04B5/00 , A61N5/00
CPC分类号： A61B5/0002 , Y10S128/903
摘要： Output signals from a set of Faraday loops located in a common plane are combined selectively to simulate the output signals from a set of mutually orthogonal antennas. This arrangement and use of Faraday loops are especially suitable in a hospital environment for monitoring patients. Because of the availability of output signals from a set of equivalent orthogonal antennas, any danger of a gap in the monitoring of the patient is greatly minimized; the patient can be monitored regardless of the changing orientation of the patient with regards to the monitoring antennas.
摘要翻译：来自位于公共平面中的一组法拉第回路的输出信号被选择性地组合以模拟来自一组相互正交的天线的输出信号。法拉第环路的安排和使用特别适用于医院监测患者环境。由于来自一组等效正交天线的输出信号的可用性，对患者监测中的间隙的任何危险被大大减小; 可以监视患者，而不管患者关于监测天线的取向如何。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式