公开(公告)号：US5287058A

公开(公告)日：1994-02-15

申请号：US887669

申请日：1992-05-26

申请人： Takao Goto ,  Yutaka Igarashi ,  Takehiko Hayashi ,  Yoshiyasu Nakashima

发明人： Takao Goto ,  Yutaka Igarashi ,  Takehiko Hayashi ,  Yoshiyasu Nakashima

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。

公开(公告)号：US5045788A

公开(公告)日：1991-09-03

申请号：US499963

申请日：1990-03-27

申请人： Hajime Hayashi ,  Yutaka Igarashi ,  Takehiko Hayashi ,  Takao Goto ,  Shinichi Amemiya

发明人： Hajime Hayashi ,  Yutaka Igarashi ,  Takehiko Hayashi ,  Takao Goto ,  Shinichi Amemiya

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。

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。

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.

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。

公开(公告)号：US5285385A

公开(公告)日：1994-02-08

申请号：US495801

申请日：1990-03-16

申请人： Yutaka Igarashi ,  Takaki Shimura ,  Takehiko Hayashi

发明人： Yutaka Igarashi ,  Takaki Shimura ,  Takehiko Hayashi

IPC分类号： A61B5/04 ,  A61B5/05 ,  G06F15/00

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。

公开(公告)号：US5113136A

公开(公告)日：1992-05-12

申请号：US468360

申请日：1990-01-22

申请人： Hajime Hayashi ,  Yutaka Igarashi ,  Takehiko Hayashi ,  Takaki Shimura ,  Kenji Kawabe

发明人： Hajime Hayashi ,  Yutaka Igarashi ,  Takehiko Hayashi ,  Takaki Shimura ,  Kenji Kawabe

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.

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

IPC分类号： H04B1/06 ,  H04B1/28

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。

公开(公告)号：US07255479B2

公开(公告)日：2007-08-14

申请号：US11378352

申请日：2006-03-20

申请人： Toru Tsukada ,  Yutaka Igarashi ,  Soichiro Kato ,  Toshikazu Yabe ,  Fumio Ueki

发明人： Toru Tsukada ,  Yutaka Igarashi ,  Soichiro Kato ,  Toshikazu Yabe ,  Fumio Ueki

IPC分类号： F16C29/06

CPC分类号： F16C29/086 ,  F16C29/0642 ,  F16C33/6611 ,  F16C33/6622 ,  F16C33/6648

摘要： In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.

摘要翻译： 在包括轴向延伸的导轨，与导轨接合的滑块以及装载到滑块中的多个滚动元件的线性引导装置中，线性引导装置还包括固定到滑块的与导向件滑动接触的密封装置 用于密封存在于导轨和滑块之间的间隙的导轨，其中密封装置包括：由含有润滑剂的合成树脂形成的含润滑剂的聚合物构件，并且具有与导轨接触以包围引导件的接触部分 轨道，两个翼部，将翼部基本上连接成C形的连接部以及形成在各翼部中的一对第一凹部，用于将含润滑剂的聚合物构件固定到滑块; 安装在与滑块相对的含润滑剂的聚合物构件上的第一板构件; 以及插入到各个第一凹部中的一对第一圆柱形构件。

公开(公告)号：US20060165322A1

公开(公告)日：2006-07-27

申请号：US11378352

申请日：2006-03-20

申请人： Toru Tsukada ,  Yutaka Igarashi ,  Soichiro Kato ,  Toshikazu Yabe ,  Fumio Ueki

发明人： Toru Tsukada ,  Yutaka Igarashi ,  Soichiro Kato ,  Toshikazu Yabe ,  Fumio Ueki

IPC分类号： F16C33/10

CPC分类号： F16C29/086 ,  F16C29/0642 ,  F16C33/6611 ,  F16C33/6622 ,  F16C33/6648

摘要： In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, in which the sealing device includes: a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.

摘要翻译： 在包括轴向延伸的导轨，与导轨接合的滑块以及装载到滑块中的多个滚动元件的线性引导装置中，线性引导装置还包括固定到滑块的与导向件滑动接触的密封装置 用于密封存在于导轨和滑块之间的间隙的导轨，其中密封装置包括：由含有润滑剂的合成树脂形成的含润滑剂的聚合物构件，并且具有与导轨接触以包围引导件的接触部分 轨道，两个翼部，将翼部基本上连接成C形的连接部以及形成在各翼部中的一对第一凹部，用于将含润滑剂的聚合物构件固定到滑块; 安装在与滑块相对的含润滑剂的聚合物构件上的第一板构件; 以及插入到各个第一凹部中的一对第一圆柱形构件。