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公开(公告)号：US5045788A
公开(公告)日：1991-09-03
申请号：US499963
申请日：1990-03-27
IPC分类号： A61B5/055 , G01R33/035
CPC分类号： G01R33/0356 , Y10S505/846
摘要： A digital SQUID control system for measuring a weak magnetic flux irradiated from an object includes: a SQUID having Josephson junctions and a superconductively coil; a pick-up coil detecting the weak magnetic flux from the object and flowing a measuring current in the pick-up coil, and an input coil magnetically coupled to the superconductivity coil through the measuring current; a feedback coil magnetically coupled to the superconductivity coil through a feedback current; a feedback circuit for counting positive and negative pulses input from the SQUID, for converting count values to an analog voltage, and for converting the analog voltage to the feedback current; an alternating has current generating circuit connected to the SQUID through an injection terminal, for supplying the alternating bias current to the SQUID; and a pulse rate measuring circuit for calculating a sum of the positive and negative pulses, for converting the sum to an analog voltage, and for outputting the analog voltage to the alternating current generating circuit. Further, the alternating current generating circuit controls an amplitude of the alternating bias current in such a way that the sum of the positive and negative pulses per unit of time becomes constant, and the feedback circuit controls the feedback current under the controls of the alternating bias current amplitude in such a way that a difference between the positive pulses and the negative pulses becomes zero by flowing the feedback current through the magnetically coupled superconductivity coil.
摘要翻译： 用于测量从物体照射的弱磁通的数字SQUID控制系统包括：具有约瑟夫逊结和超导线圈的SQUID; 检测来自物体的弱磁通量和拾取线圈中的测量电流的拾取线圈，以及通过测量电流与超导线圈磁耦合的输入线圈; 通过反馈电流与超导线圈磁耦合的反馈线圈; 反馈电路，用于对从SQUID输入的正和负脉冲进行计数，用于将计数值转换为模拟电压，以及将模拟电压转换为反馈电流; 交替的电流产生电路通过注入端子连接到SQUID，用于向SQUID提供交流偏置电流; 以及脉冲率测量电路，用于计算正脉冲和负脉冲之和，用于将和转换为模拟电压，并将模拟电压输出到交流发生电路。 此外，交流发电电路以这样的方式控制交流偏置电流的振幅，使得每单位时间的正脉冲和负脉冲之和变得恒定，并且反馈电路在交流偏压的控制下控制反馈电流 电流幅度使得正脉冲和负脉冲之间的差通过使反馈电流流过磁耦合超导线圈而变为零。
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2.发明授权
公开(公告)号：US5355085A
公开(公告)日：1994-10-11
申请号：US672866
申请日：1991-03-20
申请人： Yutaka Igarashi , Takao Goto , Takehiko Hayashi , Yoshiyasu Nakashima , Norio Fujimaki , Hajime Hayashi , Kohtaro Gotoh
发明人： Yutaka Igarashi , Takao Goto , Takehiko Hayashi , Yoshiyasu Nakashima , Norio Fujimaki , Hajime Hayashi , Kohtaro Gotoh
IPC分类号： G01R33/035
CPC分类号： G01R33/0356 , Y10S505/846
摘要： A plurality of SQUID flux sensors are supplied with their respective bias currents at the same time from a bias source. A superconducting multiplexer multiplexes output signals of the SQUID flux sensors during an interval of time when the bias currents are supplied to the SQUID flux sensors. A multiplexer, placed in a room-temperature environment, distributes each of the multiplexed output signals of the SQUID flux sensors to a respective one of the output terminals which correspond to the SQUID flux sensors. Each signal which has been output to an individual output terminal is counted by a counter, so that an external magnetic flux to a corresponding SQUID flux sensor is measured.
摘要翻译： 多个SQUID磁通传感器从偏置源同时被提供有它们各自的偏置电流。 超导多路复用器在偏置电流被提供给SQUID磁通传感器的时间间隔期间复用SQUID磁通传感器的输出信号。 放置在室温环境中的多路复用器将SQUID通量传感器的多路复用输出信号中的每一个分配给与SQUID通量传感器相对应的输出端子中的相应一个。 已经输出到各个输出端子的每个信号被计数器计数，从而测量到相应的SQUID磁通量传感器的外部磁通量。
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3.发明授权Digital magnetic flux measuring apparatus using superconducting quantum interference device with flux trapping prevention features 失效使用超导量子干涉装置的数字磁通量测量装置，具有防止流量的特征
公开(公告)号：US5287058A
公开(公告)日：1994-02-15
申请号：US887669
申请日：1992-05-26
IPC分类号： G01R33/035 , G01R33/02
CPC分类号： G01R33/0356 , Y10S505/846
摘要： A digital superconducting quantum interference device type fluxmeter includes a flux sensor unit which detects external magnetic flux to be measured using a SQUID ring, and outputs pulse signals of corresponding directions and numbers, and a counter unit which counts the number of pulse signals output by the flux sensor unit inclusive of the directions thereof, in order to measure the external magnetic flux based on the counted result of the counter unit. The fluxmeter further includes an offset detection unit which detects the offset quantity of the counter unit generated by the magnetic flux trapped by the SQUID ring, and a feedback unit that feeds back to the flux sensor unit a signal that is obtained based on the detected offset quantity and the counted result of the counter unit.
摘要翻译： 数字超导量子干涉装置型通量计包括：磁通传感器单元，其使用SQUID环检测待测量的外部磁通量，并输出相应方向和数字的脉冲信号;以及计数单元，其计数由 磁通传感器单元包括其方向，以便基于计数器单元的计数结果来测量外部磁通量。 磁通计进一步包括偏移检测单元，该偏移检测单元检测由SQUID环所捕获的磁通产生的计数器单元的偏移量，以及反馈单元，其将基于检测到的偏移获得的信号反馈到通量传感器单元 数量和计数器的计数结果。
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公开(公告)号：US5093618A
公开(公告)日：1992-03-03
申请号：US550171
申请日：1990-07-09
申请人： Takao Goto , Yutaka Igarashi , Takehiko Hayashi
发明人： Takao Goto , Yutaka Igarashi , Takehiko Hayashi
IPC分类号： G01R33/035
CPC分类号： G01R33/0354 , Y10S505/846
摘要： In a multi-channel SQUID fluxmeter for detecting magnetic flux signals by use of an array of SQUID flux sensors each comprising a digital SQUID for providing a pulse output, multiplexers and the like are appropriately used to allow pulse signals output from the SQUID flux sensors to be switched on a time series basis in order to obtain a magnetic flux signal for each channel. Thus, only one processing circuit need to be provided for a large number of SQUID flux sensors, thus reducing the scale of the fluxmeter and making the device small.
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5.发明授权Pick-up coil assemblies and system for use in a multi-channel squid magnetometer 失效拾取线圈组件和系统用于多通道鱿鱼磁强计
公开(公告)号：US5451871A
公开(公告)日：1995-09-19
申请号：US550691
申请日：1990-07-10
申请人： Yutaka Igarashi , Takao Goto , Takehiko Hayashi
发明人： Yutaka Igarashi , Takao Goto , Takehiko Hayashi
IPC分类号： G01R33/022 , G01R33/035
CPC分类号： G01R33/022 , G01R33/0358 , Y10S336/01
摘要： A pick-up coil assembly for a multi-channel SQUID magnetometer. The assembly includes a base plate, a plurality of support bars fixedly mounted on the base plate so as to form a matrix, and a plurality of pick-up coil units fixedly mounted on the support bars, each pick-up coil unit having a first and second pick-up coil block. Each of the pick-up coil blocks has a support body, a pair of pick-up coils, connection pads and connection lines. The pair of pick-up coils, the connection pads and the connection lines are formed by a lithography technique on the support body.
摘要翻译： 用于多通道SQUID磁力计的拾取线圈组件。 组件包括基板，固定地安装在基板上以形成矩阵的多个支撑杆和固定地安装在支撑杆上的多个拾取线圈单元，每个拾取线圈单元具有第一 和第二拾取线圈块。 每个拾取线圈块具有支撑体，一对拾取线圈，连接垫和连接线。 一对拾取线圈，连接焊盘和连接线通过光刻技术形成在支撑体上。
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6.发明授权
公开(公告)号：US5113136A
公开(公告)日：1992-05-12
申请号：US468360
申请日：1990-01-22
IPC分类号： G01R33/025
CPC分类号： G01R33/025
摘要： An apparatus is provided for measuring a very weak magnetic field generated by a human body, etc. External magnetic noise components coming from other magnetic sources and existing around an object whose magnetic field is to be measured are detected by compensation coils of the apparatus. The compensation coils are oriented in multiple dimensional directions. The detected noise components are weighted and added to each other to correctly find the noise components. Thereafter, the noise components mixed in the objective very weak magnetic field are removed, thereby correctly measuring the very weak magnetic field.
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公开(公告)号：US5285385A
公开(公告)日：1994-02-08
申请号：US495801
申请日：1990-03-16
CPC分类号： A61B5/04005
摘要： An estimated current dipole displaying system in which a weak magnetic field generated from the heart or brain is measured to estimate the position, direction, magnitude and depth from a body surface of a current dipole which is equivalent to a heart current or a current flowing in a nerve and the estimated current dipole is displayed on a two-dimensional display. A parameter, other than that used to indicate the magnitude and those inappropriate for combined use with the magnitude indicating parameter, is used as a depth indicating parameter and the current dipole is thus displayed.
摘要翻译： 测量从心脏或大脑产生的弱磁场的估计的当前偶极显示系统，以估计来自当前偶极子的体表的位置，方向，大小和深度，其相当于心电流或流过的电流 神经和估计的电流偶极显示在二维显示器上。 除了用于指示大小的参数和与幅度指示参数组合使用的不合适的参数被用作深度指示参数，并且因此显示当前偶极子。
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公开(公告)号：US4757715A
公开(公告)日：1988-07-19
申请号：US16472
申请日：1987-02-17
申请人： Hirohide Miwa , Keiichi Murakami , Takaki Shimura , Yutaka Igarashi , Akira Shiba , Hajime Hayashi
发明人： Hirohide Miwa , Keiichi Murakami , Takaki Shimura , Yutaka Igarashi , Akira Shiba , Hajime Hayashi
CPC分类号： G01S7/52025 , G01N29/343 , G01N29/348 , G01N29/4463 , G01S15/895
摘要： The present invention relates to a signal processing apparatus for quantitatively measuring ultrasonic characteristics of a medium, such as a human body and realizes the high speed quantitative measurement by processing all signals in the time domain. In the processing for eliminating an error, produced by a degree of convergence of the ultrasonic beam, a correcting function that is a function of the depth and frequency is employed. The correcting function is measured in a no-attenuation medium and converted into a form suited to the time domain processing. The function is stored and such frequency characteristics of the function are sequentially read during an actual medium measurement to control the characteristic of a variable characteristic filter to correct the received signal.
摘要翻译： 本发明涉及一种用于定量测量诸如人体之类的介质的超声波特性的信号处理装置，并通过处理时域中的所有信号来实现高速定量测量。 在消除由超声波束的收敛程度产生的误差的处理中，采用作为深度和频率的函数的校正函数。 校正功能在无衰减介质中测量并转换为适合于时域处理的形式。 存储该功能，并且在实际介质测量期间依次读取功能的这种频率特性，以控制可变特征滤波器的特性以校正接收的信号。
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公开(公告)号：US4655228A
公开(公告)日：1987-04-07
申请号：US675869
申请日：1984-11-28
申请人： Takaki Shimura , Keiichi Murakami , Yutaka Igarashi , Akira Shiba , Hajime Hayashi , Hirohide Miwa , Michitoshi Inoue , Masayuki Matsumoto
发明人： Takaki Shimura , Keiichi Murakami , Yutaka Igarashi , Akira Shiba , Hajime Hayashi , Hirohide Miwa , Michitoshi Inoue , Masayuki Matsumoto
CPC分类号： G01S15/8977 , G01S7/52025 , G01S7/52036
摘要： A diagnosis apparatus for discriminating a property of the tissue to be observed from the reflected ultrasonic wave uses the nature of the fine structure of the tissue, and more practically uses the interval of small reflecting bodies dispersely distributed in the tissue as the parameters. The intervals flucatuate. Therefore, an average value and/or a degree of fluctuation is calculated and is displayed. For obtaining the average interval, a method of using the cepstrum of the received signal or a method of using the self-correlation of the received signal can be used.
摘要翻译： 用于从反射的超声波中区分要观察的组织的性质的诊断装置使用组织的精细结构的性质，更实际上使用分散在组织中的小反射体的间隔作为参数。 间隔流血。 因此，计算平均值和/或波动程度并显示。 为了获得平均间隔，可以使用使用接收信号的倒频谱的方法或使用接收信号的自相关的方法。
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10.发明申请Semiconductor integrated circuit and semiconductor integrated circuit for radio communication 有权半导体集成电路和无线电通信半导体集成电路公开(公告)号：US20070190961A1
公开(公告)日：2007-08-16
申请号：US11585996
申请日：2006-10-25
申请人： Yutaka Igarashi , Yusaku Katsube , Akio Yamamoto
发明人： Yutaka Igarashi , Yusaku Katsube , Akio Yamamoto
CPC分类号： H04B1/30
摘要： In a signal receiving circuit of a direct conversion system applied with a semiconductor integrated circuit for radio communication having a PLL requiring a clock signal, an LNA requiring low-noise receiving characteristics, and others, a variable coupling line is provided between clock signal buffers and at an input stage of the PLL, so that coupling between the variable coupling line and an input terminal of the LNA and coupling between the variable coupling line and a GND terminal of the LNA are made equal to each other at frequencies of higher harmonic waves of a clock signal. When the input terminal and the GND terminal of the LNA are excited at the same phase, since no output occurs at an output terminal of the LNA, an output of the LNA does not contain any higher harmonic wave of a clock signal.
摘要翻译： 在应用于具有需要时钟信号的PLL的无线电通信用半导体集成电路的直接转换系统的信号接收电路中，需要低噪声接收特性的LNA等，在时钟信号缓冲器和 在PLL的输入级，使得可变耦合线与LNA的输入端之间的耦合以及可变耦合线与LNA的GND端之间的耦合使得在高次谐波的频率处彼此相等 一个时钟信号。 当LNA的输入端子和GND端子在相同相位被激励时，由于在LNA的输出端子处没有输出，所以LNA的输出不包含时钟信号的任何高次谐波。
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