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42 条记录 (耗时 0.019 秒)

    Linear receiver having dual automatic gain control loops
    31.
    发明授权
    Linear receiver having dual automatic gain control loops 失效
    具有双自动增益控制回路的线性接收器

    公开(公告)号：US5722062A

    公开(公告)日：1998-02-24

    申请号：US456342

    申请日：1995-06-01

    申请人： Eiichi Nakanishi ,  Tetsuo Onodera

    发明人： Eiichi Nakanishi ,  Tetsuo Onodera

    IPC分类号： H03G3/20 ,  H03G3/30 ,  H03G5/16 ,  H04B1/16 ,  H04B1/26 ,  H04B7/26

    CPC分类号： H03G3/3068 ,  H04B1/26

    摘要： A linear receiver is disclosed which includes a linear receiver having: a preamplifier for amplifying linearly a modulated carrier signal (RF signal) having a first frequency trapped by an antenna; a mixer for converting the RF signal into an intermediate frequency signal having a second frequency less than the first frequency in accordance with a local oscillation signal; an IF stage for analogue delivering a demodulated output signal by saturatedly amplifying the intermediate frequency signal and for outputting an RSSI signal which indicates a level of the RF signal; an IF stage for digital incorporating therein an AGC input terminal for controlling an amplitude gain thereof for outputting an in-phase (I) signal and a quadrate (Q) signal, respectively, with the intermediate frequency signal by linearly amplifying the intermediate frequency signal; a first feed back loop circuit for providing a first feed back control signal to the AGC input terminal so as to keep demodulation levels of the I signal and the Q signal constant and not to be saturated; and a second feed back loop circuit for providing a second feed back control signal to the preamplifier and/or the mixer so as to keep the preamplifier and/or the mixer not to be saturated.

    摘要翻译： 公开了一种线性接收机，其包括：线性接收机，具有：前置放大器，用于线性地放大具有由天线捕获的第一频率的调制载波信号（RF信号）; 混频器，用于根据本地振荡信号将RF信号转换成具有小于第一频率的第二频率的中频信号; IF阶段，用于通过饱和放大中频信号并输出​​指示RF信号的电平的RSSI信号来模拟传送解调的输出信号; 用于数字并入其中的用于控制其幅度增益的AGC输入端的IF级，用于通过线性放大中频信号分别输出同相（I）信号和正交（Q）信号与中频信号; 第一反馈回路电路，用于向AGC输入端提供第一反馈控制信号，以保持I信号和Q信号的解调电平恒定且不饱和; 以及用于向前置放大器和/或混频器提供第二反馈控制信号以便保持前置放大器和/或混频器不饱和的第二反馈回路电路。

    Portable electronic device and method for supplying current to different loads
    32.
    发明授权
    Portable electronic device and method for supplying current to different loads 失效
    便携式电子设备和用于向不同负载供电的方法

    公开(公告)号：US5701597A

    公开(公告)日：1997-12-23

    申请号：US436921

    申请日：1995-05-09

    申请人： Eiichi Nakanishi ,  Tetsuo Onodera

    发明人： Eiichi Nakanishi ,  Tetsuo Onodera

    IPC分类号： H04B1/40 ,  H02J7/00 ,  H04B1/16 ,  H04B1/44 ,  H04B1/56 ,  H04B7/26 ,  H04M1/00 ,  H02J7/34 ,  H04B1/38

    CPC分类号： H04B1/56 ,  H02J7/0024 ,  H02J7/0031 ,  H04B1/1615 ,  H04B1/44

    摘要： According to a first aspect, a portable electronic device has at least two load circuits which are independently powered by different batteries. According to a second aspect, the load circuits are powered by the same battery, but their power lines are branched from a node located close to the battery, thereby reducing common impedance. According to a third aspect, two power lines are coupled through switches to two independent batteries, and are mutually coupled through a third switch. The switches are controlled according to the discharge states of the batteries. According to a fourth aspect, a battery charger charges two or more batteries by supplying current to them for short intervals in turn, so that all batteries reach full charge at substantially the same time.

    摘要翻译： 根据第一方面，便携式电子设备具有由不同电池独立供电的至少两个负载电路。 根据第二方面，负载电路由相同的电池供电，但是它们的电力线从位于电池附近的节点分支，从而降低公共阻抗。 根据第三方面，两个电源线通过开关耦合到两个独立的电池，并且通过第三开关相互耦合。 开关根据电池的放电状态进行控制。 根据第四方面，电池充电器通过依次向它们短时间间隔地供给两个或更多个电池来充电，从而所有的电池在大致相同的时间达到完全充电。

    Magnetic eyeglass hinge
    33.
    发明授权
    Magnetic eyeglass hinge 失效
    磁性眼镜铰链

    公开(公告)号：US08177360B2

    公开(公告)日：2012-05-15

    申请号：US12880300

    申请日：2010-09-13

    申请人： Diana Sierra ,  Eiichi Nakanishi

    发明人： Diana Sierra ,  Eiichi Nakanishi

    IPC分类号： G02C5/22

    CPC分类号： G02C5/2209 ,  G02C2200/02 ,  Y10T16/526

    摘要： The present invention provides eyeglasses including a frame and an arm connectable to the frame. The eyeglasses include a magnetic hinge connecting the arm to the frame. The magnetic hinge includes a first housing having an first inner cavity and a first outer protruding edge having a plurality of extending flanges disposed thereon, a first magnet disposed inside the first housing, a central washer including at least a portion of the central washer having magnetic attraction capabilities, a second housing having a second inner cavity and an inner lip portion radially disposed within the second inner cavity and a second magnet disposed inside the second housing. The magnetic hinge is magnetically held in place by the magnetic attraction between the first magnet and the second magnet via the central washer and the engagement of the extending flanges within the inner lip portion.

    摘要翻译： 本发明提供了一种眼镜，其包括可连接到框架的框架和臂。 眼镜包括将臂连接到框架的磁性铰链。 磁性铰链包括具有第一内腔的第一壳体和设置在其上的多个延伸凸缘的第一外突出边缘，设置在第一壳体内部的第一磁体，包括至少一部分具有磁性的中心垫圈的中心垫圈 具有第二内腔和径向设置在第二内腔内的内唇部分的第二壳体和设置在第二壳体内的第二磁体。 磁性铰链通过中心垫圈的第一磁体和第二磁体之间的磁吸引力被磁力保持在适当位置，并且延伸凸缘与内唇部分内的接合。

    Antenna with fixed and movable elements
    39.
    发明授权
    Antenna with fixed and movable elements 失效
    天线固定和可移动元件

    公开(公告)号：US5818392A

    公开(公告)日：1998-10-06

    申请号：US557808

    申请日：1995-11-14

    申请人： Shinji Oka ,  Eiichi Nakanishi ,  Tetsuo Onodera ,  Hiroshi Shimizu

    发明人： Shinji Oka ,  Eiichi Nakanishi ,  Tetsuo Onodera ,  Hiroshi Shimizu

    IPC分类号： H01Q21/28 ,  H01Q1/24 ,  H01Q1/27 ,  H01Q9/32 ,  H04B1/38

    CPC分类号： H01Q1/244

    摘要： In a mobile radio transceiver, an antenna has a fixed element and a movable element. When the movable element is in an extended state, the movable element functions. On the other hand, when the movable element is in a retracted state, the fixed element functions. An impedance matching circuit preferentially performs impedance matching relative to the fixed element. A reactance element is further provided which is connected to the movable element when the movable element is in the extended state. On the other hand, the reactance element is out of connection to the movable element when the movable element is in the retracted state. With this arrangement, the impedance matching circuit and the reactance element cooperatively achieve impedance matching relative to the movable element when the movable element functions. Alternatively, if the impedance matching circuit preferentially performs impedance matching relative to the movable element, the reactance element is connected to the fixed element when the fixed element functions.

    摘要翻译： 在移动无线电收发机中，天线具有固定元件和可移动元件。 当可移动元件处于伸展状态时，可移动元件起作用。 另一方面，当可动元件处于缩回状态时，固定元件起作用。 阻抗匹配电路优先执行相对于固定元件的阻抗匹配。 还提供了一个电抗元件，当可移动元件处于伸出状态时，该电抗元件连接到可移动元件。 另一方面，当可移动元件处于缩回状态时，电抗元件与可移动元件不连接。 利用这种布置，当可移动元件起作用时，阻抗匹配电路和电抗元件协调地实现相对于可移动元件的阻抗匹配。 或者，如果阻抗匹配电路相对于可动元件优先进行阻抗匹配，则当固定元件起作用时，电抗元件连接到固定元件。

    Mechanism for machining and grinding tool for converting rotational movement into reciprocating movement
    40.
    发明授权
    Mechanism for machining and grinding tool for converting rotational movement into reciprocating movement 失效
    用于将旋转运动转换为往复运动的机械加工和磨削工具

    公开(公告)号：US5617759A

    公开(公告)日：1997-04-08

    申请号：US489218

    申请日：1995-06-12

    申请人： Eiichi Nakanishi

    发明人： Eiichi Nakanishi

    IPC分类号： B23Q5/027 ,  B23D51/16 ,  F16H21/50 ,  F16H21/22

    CPC分类号： B23D51/16 ,  F16H21/50 ,  Y10T74/18208

    摘要： A mechanism for a cutting or grinding tool for converting rotational movement into reciprocating movement contains a casing, a reciprocating member mounted within the casing for receiving and securing a tool to be inserted into a tool receiving opening of the reciprocating member, a shaft member rotatably mounted within the casing for rotation by a rotational driving force, a bearing member for rotatably carrying the shaft member, and a support member for carrying the reciprocating member for enabling reciprocating movement thereon. The reciprocating member and the shaft member are spaced apart so that a center axis of the reciprocating member and a center axis of the shaft member are offset. A connecting member is provided between the shaft member and the reciprocating member for interconnecting the shaft and reciprocating members for converting rotational movement of the shaft member into reciprocating movement of the reciprocating member. One end of the connecting member is slidably received and mounted in the shaft member at a position offset from the axis of the shaft member and the other end of the connecting member is slidably received and mounted in the reciprocating member at a position offset from the axis of the shaft member.

    摘要翻译： 用于将旋转运动转换成往复运动的切割或研磨工具的机构包括壳体，安装在壳体内的往复运动构件，用于接收和固定待插入到往复运动构件的工具接收开口中的工具，轴构件可旋转地安装 在壳体内通过旋转驱动力旋转，用于可旋转地承载轴构件的支承构件和用于承载往复运动构件的支撑构件以使其能够往复运动。 往复运动件和轴件间隔开，以使往复运动件的中心轴线和轴件的中心轴线偏移。 连接构件设置在轴构件和往复运动构件之间，用于互连轴和往复运动构件，用于将轴构件的旋转运动转换成往复运动构件的往复运动。 连接构件的一端可滑动地接收并安装在轴构件中偏离轴构件的轴线的位置处，并且连接构件的另一端可滑动地容纳并安装在往复运动构件中偏离轴线的位置 的轴构件。