利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

29 条记录 (耗时 0.038 秒)

    Radio frequency coil for nuclear magnetic resonance imaging
    1.
    发明授权
    Radio frequency coil for nuclear magnetic resonance imaging 失效
    射频线圈用于核磁共振成像

    公开(公告)号：US4755756A

    公开(公告)日：1988-07-05

    申请号：US13901

    申请日：1987-02-12

    申请人： Susumu Nishihara ,  Kiyoshi Yoda

    发明人： Susumu Nishihara ,  Kiyoshi Yoda

    IPC分类号： G01R33/343 ,  G01R33/36 ,  G01R33/20

    CPC分类号： G01R33/3628 ,  G01R33/343

    摘要： A radio frequency coil for nuclear magnetic resonance imaging comprises at least one pair of arcuate H-shaped members which are disposed about a longitudinal axis so as to form a tube. A variable capacitor means for adjusting the resonant frequency of the coil is connected across the feeding points of the coil. A balanced feed circuit comprising a balanced impedance matching circuit and a balanced-to-unbalanced converter is connected across the feeding points. An unbalanced current from a transceiver is converted into balanced currents which are fed to the feeding points.

    摘要翻译： 用于核磁共振成像的射频线圈包括至少一对弓形H形构件，其围绕纵向轴线设置以形成管。 用于调节线圈的谐振频率的可变电容器装置连接在线圈的馈电点上。 包括平衡阻抗匹配电路和平衡不平衡转换器的平衡馈电电路连接在馈电点上。 来自收发器的不平衡电流被转换成馈送到馈电点的平衡电流。

    Radio frequency coil for nuclear magnetic resonance imaging
    2.
    发明授权
    Radio frequency coil for nuclear magnetic resonance imaging 失效
    射频线圈用于核磁共振成像

    公开(公告)号：US4837515A

    公开(公告)日：1989-06-06

    申请号：US26891

    申请日：1987-03-17

    申请人： Susumu Nishihara ,  Kiyoshi Yoda

    发明人： Susumu Nishihara ,  Kiyoshi Yoda

    IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/34

    CPC分类号： G01R33/34046

    摘要： A radio frequency coil for nuclear magnetic resonance imaging comprises two annular conductors which are coaxially disposed at opposite ends of a prescribed axis and at least one pair of longitudinal conductor groups which are symmetrically disposed in parallel to the prescribed axis and extend longitudinally from one annular conductor to the other. Each longitudinal conductor group comprises a plurality of longitudinally-extending electrical conductors whose ends are secured and electrically connected to the annular conductors. The longitudinal conductors are preferably in the form of electrically conducting wires, tubes, or plates. The annular conductors can be in the form of one-piece rings or in the form of one or more pairs of arcuate plates which are electrically connected with one another and disposed about the prescribed axis in the form of a ring. Electrically conducting guard rings which are electrically insulated form the inner surface of the coil may be coaxially disposed inside the annular conductors.

    摘要翻译： 用于核磁共振成像的射频线圈包括同轴地设置在规定轴线的相对端的两个环形导体和至少一对纵向导体组，其对称地设置成与规定轴线平行并且从一个环形导体 到另一个 每个纵向导体组包括多个纵向延伸的电导体，其端部被固定并电连接到环形导体。 纵向导体优选为导电线，管或板的形式。 环形导体可以是一体式环形的形式，也可以是一对或多对弧形板的形式，它们彼此电连接并以环的形式围绕规定的轴设置。 从线圈的内表面电绝缘的导电保护环可以同轴地设置在环形导体的内部。

    Adjustable radio frequency coil for nuclear magnetic resonance imaging
    3.
    发明授权
    Adjustable radio frequency coil for nuclear magnetic resonance imaging 失效
    用于核磁共振成像的可调射频线圈

    公开(公告)号：US4720680A

    公开(公告)日：1988-01-19

    申请号：US012446

    申请日：1987-02-09

    申请人： Susumu Nishihara ,  Kiyoshi Yoda

    发明人： Susumu Nishihara ,  Kiyoshi Yoda

    IPC分类号： G01R33/34 ,  G01R33/36 ,  G01R33/20

    CPC分类号： G01R33/34046 ,  G01R33/3628

    摘要： A radio frequency coil for a nuclear magnetic resonance imaging apparatus comprises a plurality of arcuate, plate-like H-shaped members which are disposed about a common axis so as to form a tube. The flanges of adjacent H-shaped members are electrically connected. The web of at least one of the H-shaped members is cut in two at its midportion to form two T-shaped plates, and the legs of the T-shaped plates are connected by capacitive coupling in a manner which allows the capacitance to be varied. A conventional variable capacitor can be used to vary the capacitance. Alternatively, each H-shaped member is divided into two T-shaped plates with overlapping legs. A dielectric material is provided between the overlapping portions, and the capacitance is varied by moving the T-shaped plates with respect to one another in the longitudinal direction of the tube so as to vary the size of the overlapping portions.

    摘要翻译： 用于核磁共振成像装置的射频线圈包括围绕公共轴设置以形成管的多个弓形的板状H形构件。 相邻H形构件的凸缘电连接。 H形构件中的至少一个的腹板在其中部切割成两个，以形成两个T形板，并且T形板的腿通过电容耦合以允许电容为 多变。 可以使用常规的可变电容器来改变电容。 或者，每个H形构件被分成具有重叠腿的两个T形板。 电介质材料设置在重叠部分之间，电容通过沿着管的纵向方向相对于彼此移动T形板来改变，以便改变重叠部分的尺寸。

    Facsimile transmission system, facsimile receiving device, and facsimile receiving method
    4.
    发明申请
    Facsimile transmission system, facsimile receiving device, and facsimile receiving method 有权
    传真传输系统，传真接收设备和传真接收方式

    公开(公告)号：US20080117475A1

    公开(公告)日：2008-05-22

    申请号：US11906735

    申请日：2007-10-02

    申请人： Takao Ozawa ,  Kosuke Matsunaga ,  Teruhito Kojima ,  Toshifumi Sakai ,  Katsunori Nagao ,  Kiyoshi Yoda ,  Masanobu Nishitani ,  Eiji Kubota

    发明人： Takao Ozawa ,  Kosuke Matsunaga ,  Teruhito Kojima ,  Toshifumi Sakai ,  Katsunori Nagao ,  Kiyoshi Yoda ,  Masanobu Nishitani ,  Eiji Kubota

    IPC分类号： H04N1/00

    CPC分类号： H04N1/00214 ,  H04N1/00217 ,  H04N1/33376 ,  H04N2201/0015 ,  H04N2201/0068 ,  H04N2201/33314 ,  H04N2201/33321

    摘要： A facsimile transmission system transmitting an image from a sending device to a receiving device via a network, includes:a status information reply unit which replies to a notification request of status information from the sending device by transmitting the status information representing status of the receiving-device to the sending device via the network,in which the status information reply unit includes:a transmission source classifying portion which determines a class of the sending device by classifying sending devices into a plurality of classes on the basis of a message transmitted by the sending devices via the network upon the notification request, anda selected-status information transmitting portion which transmits the status information to the sending device via the network, the status information being selected according to the class of the sending-side device, which is classified by the transmission source classifying portion among a plurality of status information representing the status of the receiving device.

    摘要翻译： 一种通过网络将图像从发送装置发送到接收装置的传真传输系统包括：状态信息应答单元，其通过发送表示接收装置的状态的状态信息来回复来自发送装置的状态信息的通知请求， 设备经由网络发送到发送设备，其中状态信息应答单元包括：发送源分类部分，其通过基于由发送者发送的消息将发送设备分类为多个类别来确定发送设备的类别 根据通知请求通过网络的设备，以及经由网络向发送设备发送状态信息的选择状态信息发送部，根据发送侧设备的类别来选择状态信息，该状态信息被分类为 多个状态信息中的发送源分类部 代表接收设备的状态。

    Transmitting and receiving-apparatus for vehicle, having mode setting means
    5.
    发明授权
    Transmitting and receiving-apparatus for vehicle, having mode setting means 失效
    用于车辆的发送和接收装置，具有模式设置装置

    公开(公告)号：US5677680A

    公开(公告)日：1997-10-14

    申请号：US273299

    申请日：1994-07-11

    申请人： Kiyoshi Yoda

    发明人： Kiyoshi Yoda

    IPC分类号： B60R25/04 ,  G07C9/00 ,  H04Q1/00

    CPC分类号： B60R25/24 ,  B60R25/04 ,  G07C9/00182 ,  G07C2009/00222 ,  G07C2009/00793 ,  G07C2009/00825

    摘要： A security apparatus for a vehicle including a transmitting device and a receiving device either of which is mounted on the vehicle, the security apparatus including a control section for altering a processing mode of one of the transmitting device and the receiving device when an operation switch mounted on the vehicle is operated in an abnormal fashion. The operation switch may be a radio ON/OFF switch or an ignition switch, and the abnormal operation may be turning on and off the switch a predetermined number of times within a predetermined period. When this abnormal operation is detected by the control section, the control section permits the identification code of the security apparatus to be rewritten with a new identification code transmitted from the other of the transmitting device and the receiving device.

    摘要翻译： 一种用于车辆的安全装置，包括发送装置和安装在车辆上的接收装置，所述安全装置包括控制部分，用于当安装的操作开关时改变发送装置和接收装置之一的处理模式 在车辆上以异常的方式操作。 操作开关可以是无线电开/关开关或点火开关，并且异常操作可以在预定时间段内将开关接通和断开预定次数。 当由控制部检测到这种异常操作时，控制部分允许用从发送装置和接收装置中的另一个发送的新的识别码重写安全装置的识别码。

    Magnetic resonance imaging method and apparatus therefor
    8.
    发明授权
    Magnetic resonance imaging method and apparatus therefor 失效
    磁共振成像方法及其装置

    公开(公告)号：US4868502A

    公开(公告)日：1989-09-19

    申请号：US152622

    申请日：1988-02-05

    申请人： Kazushi Hanakawa ,  Kiyoshi Yoda

    发明人： Kazushi Hanakawa ,  Kiyoshi Yoda

    IPC分类号： G01R33/54

    CPC分类号： G01R33/482

    摘要： A magnetic resonance imaging method and apparatus for obtaining images of slices of a body placed in a static magnetic field. During the sampling of one NMR signal, an additional second gradient magnetic field is impressed on the body to acquire data. These data are additionally sampled during each sampling. This enables the number of data to be increased and the number of repetitions to be reduced, thereby accomplishing a Fourier transformation at a higher speed.

    摘要翻译： 一种磁共振成像方法和装置，用于获得放置在静态磁场中的身体的切片的图像。 在一个NMR信号的采样期间，在身体上施加另外的第二梯度磁场以获取数据。 这些数据在每个采样期间被附加采样。 这使得能够增加数据的数量和减少的重复次数，从而以更高的速度完成傅里叶变换。

    RF field generator and detector
    9.
    发明授权
    RF field generator and detector 失效
    射频场发生器和探测器

    公开(公告)号：US4725780A

    公开(公告)日：1988-02-16

    申请号：US789040

    申请日：1985-10-18

    申请人： Kiyoshi Yoda ,  Satoshi Fujimura

    发明人： Kiyoshi Yoda ,  Satoshi Fujimura

    IPC分类号： G01R33/36 ,  G01R33/20

    CPC分类号： G01R33/3628

    摘要： An RF field generator and detector comprising an RF coil having an inductance and at least one conductor which includes at least first and second separated parts arranged to form stray capacitance between them, capacitors for impedance matching which are connected to the RF coil, and a balanced-to-unbalanced transformer by which a balanced load composed of the RF coil and the capacitors is coupled to an unbalanced RF transmitter and receiver, the stray capacitance being adjusted thereby to equivalently reduce the inductance of the RF coil.

    摘要翻译： 一种RF场发生器和检测器，其包括具有电感的RF线圈和至少一个导体，所述至少一个导体至少包括第一和第二分离部分，其布置成在它们之间形成寄生电容，用于阻抗匹配的电容器连接到RF线圈， 不平衡变压器，由RF线圈和电容器组成的平衡负载耦合到不平衡的RF发射器和接收器，由此调整寄生电容从而等效地降低RF线圈的电感。