中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

1466 records (took 0.033 seconds)

    Balanced oscillator and electronic apparatus employing the same
    161.
    发明专利
    Balanced oscillator and electronic apparatus employing the same 审中-公开

    公开(公告)号：JP2004023570A

    公开(公告)日：2004-01-22

    申请号：JP2002177718

    申请日：2002-06-18

    Applicant: Murata Mfg Co Ltd ,  株式会社村田製作所

    Inventor： SATO FUMITOSHI

    IPC: H03B1/00 ,  H03B5/12

    CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B2201/0208

    Abstract: PROBLEM TO BE SOLVED: To provide a balanced oscillator that can reduce the current consumption and attain downsizing and to provide an electronic apparatus employing the same.
    SOLUTION: The balanced oscillator includes: a differential oscillation circuit 2 having two outputs; and a differential amplifier circuit 11 to two inputs of which two outputs of the differential oscillation circuit 2 are connected respectively, a DC current path of the differential amplifier circuit 11 and a DC current path of the differential oscillation circuit 2 are connected in series.
    COPYRIGHT: (C)2004,JPO

    Crystal oscillator
    164.
    发明专利
    Crystal oscillator 有权
    水晶振荡器

    公开(公告)号：JP2012156977A

    公开(公告)日：2012-08-16

    申请号：JP2011113716

    申请日：2011-05-20

    Applicant: Nippon Dempa Kogyo Co Ltd ,  日本電波工業株式会社

    Inventor： ASAMURA FUMIO

    IPC: H03B5/32 ,  H03B5/36

    CPC classification number: H03B7/06 ,  H03B5/36 ,  H03B5/364 ,  H03B2201/0208 ,  H03L1/022 ,  H03L1/028 ,  H03L1/04

    Abstract: PROBLEM TO BE SOLVED: To suppress the variation of an oscillation frequency accompanying the on/off control of output buffers, in a crystal oscillator for which a crystal piece functioning as a crystal vibrator and an IC chip provided with at least an oscillation circuit using the crystal piece are housed in a container and integrated and the plurality of output buffers are provided inside the IC chip.SOLUTION: In an IC chip 20, an oscillation circuit 22 is connected to a crystal vibrator 10 through a pair of crystal connection terminals X1, X2, and output of the oscillation circuit 22 is supplied to output buffers 31, 32. In the view from the crystal connection terminal X2 having a phase opposite to that of output of the on/off controllable output buffer 32, an output terminal of the output buffer 32 is disposed farther than an output terminal of the output buffer 31 that is not subjected to the on/off control.

    Abstract translation: 要解决的问题：为了抑制伴随着输出缓冲器的开/关控制的振荡频率的变化，在用作晶体振子的晶体片和至少具有振荡的IC芯片的晶体振荡器中 使用晶体片的电路容纳在容器中并集成，并且多个输出缓冲器设置在IC芯片的内部。 解决方案：在IC芯片20中，通过一对晶体连接端子X1，X2将振荡电路22连接到晶体振子10，并且将振荡电路22的输出提供给输出缓冲器31,32。 从具有与导通/截止可控输出缓冲器32的输出相反的相位的晶体连接端子X2的视图，输出缓冲器32的输出端子被设置为比不受影响的输出缓冲器31的输出端子 到开/关控制。 版权所有（C）2012，JPO＆INPIT

    Oscillator
    166.
    发明专利
    Oscillator 审中-公开
    振荡器

    公开(公告)号：JP2008167408A

    公开(公告)日：2008-07-17

    申请号：JP2007269544

    申请日：2007-10-16

    Applicant: Fujitsu Media Device Kk ,  富士通メディアデバイス株式会社

    Inventor： NUMATA TOSHIMASA ,  PUEL ALEJANDRO

    IPC: H03B5/02 ,  H03B5/12

    CPC classification number: H03B25/00 ,  H03B28/00 ,  H03B2201/0208 ,  H03B2201/025

    Abstract: PROBLEM TO BE SOLVED: To provide an oscillator suppressing variations in electric power and C/N ratio of output signals by oscillation frequencies.
    SOLUTION: The oscillator includes: oscillation units 11 to 1n outputting oscillation signals of different frequencies; a transmission line 15 to which outputs of the oscillation units 11 to 1n are connected, the transmission line having a characteristic impedance corresponding to an output impedance of an output terminal Tout; and a low-pass filter 18 connected between the transmission line 15 and the output terminal.
    COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 解决的问题：提供通过振荡频率抑制输出信号的电功率和C / N比的振荡的振荡器。 解决方案：振荡器包括：振荡单元11至1n输出不同频率的振荡信号; 连接振荡单元11至1n的输出的传输线15，传输线具有与输出端Tout的输出阻抗相对应的特性阻抗; 以及连接在传输线15和输出端之间的低通滤波器18。 版权所有（C）2008，JPO＆INPIT

    Oscillator and information equipment using the same, and voltage controlled oscillator and information equipment using the same
    167.
    发明专利
    Oscillator and information equipment using the same, and voltage controlled oscillator and information equipment using the same 有权
    使用其的振荡器和信息设备，以及使用其的电压控制振荡器和信息设备

    公开(公告)号：JP2007267353A

    公开(公告)日：2007-10-11

    申请号：JP2006275445

    申请日：2006-10-06

    Applicant: Renesas Technology Corp ,  株式会社ルネサステクノロジ

    Inventor： NAKAMURA TAKAHIRO ,  MASUDA TORU ,  KITAMURA TOMOMITSU ,  HAYASHI NORIO ,  MORI HIROSHI

    IPC: H03B5/08 ,  H03B5/12 ,  H03H5/12

    CPC classification number: H03J3/20 ,  H03B5/1215 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1293 ,  H03B5/1296 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03D3/007 ,  H03J2200/10

    Abstract: PROBLEM TO BE SOLVED: To provide an LC resonant circuit for an oscillator with reduced fluctuation of a frequency conversion gain, and an oscillator and information equipment using the same. SOLUTION: The LC resonant circuit of the oscillator includes a parallel circuit of an inductor L1, a first fine adjustable capacitor and a first capacitor bank, and a series capacitor of a second fine adjustable capacitor and a second capacitor bank. A frequency conversion gain of the oscillator is the sum of a frequency conversion gain of the oscillator based upon the first fine adjustable capacitor which decreases according to increase of a capacitance value of the first capacitor bank, and a frequency conversion gain based upon the second fine adjustable capacitor which increases according to increase of a capacitance value of the second capacitor bank. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种具有降低的变频增益波动的振荡器的LC谐振电路，以及使用该谐振电路的振荡器和信息设备。 解决方案：振荡器的LC谐振电路包括电感器L1，第一微调电容器和第一电容器组的并联电路，以及第二精细可调电容器和第二电容器组的串联电容器。 振荡器的变频增益是基于根据第一电容器组的电容值的增加而减小的第一微细可调电容器的振荡器的变频增益之和和基于第二微调的频率转换增益 可调电容器根据第二电容器组的电容值的增加而增加。 版权所有（C）2008，JPO＆INPIT

    Variable capacity circuit and control method for the same
    168.
    发明专利
    Variable capacity circuit and control method for the same 有权
    可变容量电路及其控制方法

    公开(公告)号：JP2006279524A

    公开(公告)日：2006-10-12

    申请号：JP2005095482

    申请日：2005-03-29

    Applicant: Fujitsu Ltd ,  富士通株式会社

    Inventor： MORINOBE TAKESHI ,  KISHI MASAKI ,  KAMIYA YOSHIHARU ,  YAMAMOTO MASAHIRO

    IPC: H03B5/12 ,  H03H5/12

    CPC classification number: H03B5/1231 ,  H03B5/1215 ,  H03B5/1253 ,  H03B5/1293 ,  H03B2201/0208

    Abstract: PROBLEM TO BE SOLVED: To provide a variable capacity circuit capable of maximizing the variable capacity width of a varactor without increasing the element area of the varactor nor converting the level of a control voltage even at a low source voltage, and a control method for variable capacity.
    SOLUTION: The variable capacity circuit 2 is equipped with a capacity value control circuit 11, varactors VA1 and VA2, and resistance elements R1 and R2. The capacity value control circuit 11 outputs a variable output voltage CNTOUT according to an input control voltage VT to control potentials at both ends of the varactors at the same time. The output voltage CNTOUT is variably adjusted to have negative correlation with the control voltage VT. The variation width of the voltage VD between terminals can be expanded from a variation width SA1 to a variation width SA1a (a range of ±(Vcc1)). Consequently, the variation area of the varactor capacity value CV can be widened from a variation area CA1 to a variation area CA1a as shown in lower Fig. 5B in Fig. 5.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种可变容量电路，其能够在不增加变容二极管的元件面积的情况下最大化变容二极管的可变容量宽度，或者即使在低源电压下也转换控制电压的电平，以及控制 可变容量的方法。 解决方案：可变容量电路2配备有容量值控制电路11，变容二极管VA1和VA2以及电阻元件R1和R2。 容量值控制电路11根据输入控制电压VT输出可变输出电压CNTOUT，以同时控制变容二极管的两端的电位。 输出电压CNTOUT可变地调整为与控制电压VT呈负相关。 端子之间的电压VD的变化宽度可以从变化宽度SA1扩展到变化宽度SA1a（±（Vcc1）的范围）。 因此，如下图所示，可变容量值CV的变化面积可以从变化区域CA1变宽到变化区域CA1a。 5B。 5.版权所有（C）2007，JPO＆INPIT

    Oscillator
    169.
    发明专利
    Oscillator 审中-公开
    振荡器

    公开(公告)号：JP2005160076A

    公开(公告)日：2005-06-16

    申请号：JP2004336472

    申请日：2004-11-19

    Applicant: Fujitsu Media Device Kk ,  富士通メディアデバイス株式会社

    Inventor： MATSUO NOBUAKI ,  PUEL ALEJANDRO

    IPC: H03B5/02 ,  H03B1/00 ,  H03B5/12 ,  H03B5/18

    CPC classification number: H03B5/1847 ,  H03B2201/0208

    Abstract: PROBLEM TO BE SOLVED: To provide an oscillator capable of outputting an oscillation signal efficiently.
    SOLUTION: The oscillator includes: a resonant circuit 31 for generating a resonant signal; a drive circuit 32 that feeds back the resonant signal to the resonant circuit, and an output terminal 37 connected to a given node of the resonant circuit, an oscillation signal of the oscillator outputted via the output terminal. The resonance circuit includes an inductor 33, and the output terminal 37 is connected to one end of the inductor 33. Or the output terminal 37 is connected to an intermediate node of the inductor located between both ends of the inductor 33.
    COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 要解决的问题：提供能够有效地输出振荡信号的振荡器。 解决方案：振荡器包括：用于产生谐振信号的谐振电路31; 将谐振信号反馈到谐振电路的驱动电路32和连接到谐振电路的给定节点的输出端37，经由输出端子输出的振荡器的振荡信号。 谐振电路包括电感器33，并且输出端子37连接到电感器33的一端。或者输出端子37连接到位于电感器33两端之间的电感器的中间节点。 （C）2005，JPO＆NCIPI

Patent Agency Ranking