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64 条记录 (耗时 0.017 秒)

    Circuit apparatus and oscillator
    1.
    发明授权
    Circuit apparatus and oscillator 有权

    公开(公告)号：US11728771B2

    公开(公告)日：2023-08-15

    申请号：US17732902

    申请日：2022-04-29

    申请人： Seiko Epson Corporation

    发明人： Kohei Beppu ,  Takehiro Yamamoto

    IPC分类号： H03B5/32 ,  H03K3/03 ,  G06F1/04 ,  H03B5/36

    CPC分类号： H03B5/323 ,  G06F1/04 ,  H03B5/364 ,  H03K3/03

    摘要： A circuit apparatus includes an oscillation circuit that generates an oscillation signal, a first buffer circuit that outputs a first clock signal based on the oscillation signal, a second buffer circuit that outputs a second clock signal based on the first clock signal, a first terminal electrically couplable to a first node via which the first buffer circuit outputs the first clock signal, and a second terminal electrically coupled to a second node via which the second buffer circuit outputs the second clock signal, and the rise period of the first clock signal is shorter than the rise period of the second clock signal.

    Semiconductor circuit device, oscillator, electronic apparatus, and moving object
    5.
    发明授权
    Semiconductor circuit device, oscillator, electronic apparatus, and moving object 有权
    半导体电路器件，振荡器，电子设备和移动物体

    公开(公告)号：US09484926B2

    公开(公告)日：2016-11-01

    申请号：US14993473

    申请日：2016-01-12

    申请人： SEIKO EPSON CORPORATION

    发明人： Takehiro Yamamoto

    IPC分类号： H03B5/04 ,  H03L1/02 ,  H03B5/32

    CPC分类号： H03L1/02 ,  H03B5/04 ,  H03B5/323 ,  H03B5/362 ,  H03B5/368 ,  H03B2200/0038 ,  H03L1/026

    摘要： A semiconductor circuit device includes an oscillation circuit, an output circuit that outputs a signal output from the oscillation circuit, a temperature sensing element, a characteristic adjustment circuit that adjusts characteristics of the oscillation circuit on the basis of a signal output from the temperature sensing element, a first wiring via which power is supplied to the output circuit, and a second wiring via which a reference voltage is supplied to the output circuit in which at least one of the first wiring and the second wiring overlaps the temperature sensing element in a plan view.

    摘要翻译： 半导体电路装置包括振荡电路，输出从振荡电路输出的信号的输出电路，温度感测元件，特性调整电路，其根据从感温元件输出的信号调整振荡电路的特性 ，向输出电路供给电力的第一布线，以及第二布线，通过该第二布线，将参考电压提供给输出电路，其中第一布线和第二布线中的至少一个在计划中与温度感测元件重叠 视图。

    Microelectromechanical resonators with passive frequency tuning using variable impedance circuits
    6.
    发明授权
    Microelectromechanical resonators with passive frequency tuning using variable impedance circuits 失效
    使用可变阻抗电路进行无源频率调谐的微机电谐振器

    公开(公告)号：US08350633B1

    公开(公告)日：2013-01-08

    申请号：US13175445

    申请日：2011-07-01

    申请人： Reza Abdolvand ,  Mohsen Shahmohammadi Ghahsareh ,  Mohammad J. Modarres-Zadeh

    发明人： Reza Abdolvand ,  Mohsen Shahmohammadi Ghahsareh ,  Mohammad J. Modarres-Zadeh

    IPC分类号： H03B5/32 ,  H01L41/047

    CPC分类号： H03B5/323

    摘要： Periodic signal generators include an oscillator circuit, which is configured to generate a first periodic signal at an output thereof, and a piezoelectric-based microelectromechanical resonator. The resonator is configured to generate a second periodic signal at a first electrode thereof, which is electrically coupled to the oscillator circuit. A variable impedance circuit is provided, which is electrically coupled to a second electrode of the piezoelectric-based microelectromechanical resonator. The variable impedance circuit is configured to passively modify a frequency of the second periodic signal by changing an induced electromechanical stiffness in at least a portion of the piezoelectric-based microelectromechanical resonator.

    摘要翻译： 周期性信号发生器包括振荡器电路，其被配置为在其输出处产生第一周期性信号，以及基于压电的微机电谐振器。 谐振器被配置为在其第一电极处产生电耦合到振荡器电路的第二周期性信号。 提供可变阻抗电路，其电耦合到基于压电的微机电谐振器的第二电极。 可变阻抗电路被配置为通过改变基于压电的微机电谐振器的至少一部分中的感应机电刚度来无源地修改第二周期信号的频率。

    SWITCHABLE ELECTRODE FOR POWER HANDLING
    7.
    发明申请
    SWITCHABLE ELECTRODE FOR POWER HANDLING 有权
    用于电源处理的可切换电极

    公开(公告)号：US20130002364A1

    公开(公告)日：2013-01-03

    申请号：US13173815

    申请日：2011-06-30

    申请人： Emmanuel P. Quevy ,  Manu Seth ,  Mehrnaz Motiee

    发明人： Emmanuel P. Quevy ,  Manu Seth ,  Mehrnaz Motiee

    IPC分类号： H03B5/30

    CPC分类号： H03B5/06 ,  H03B5/323 ,  H03B2200/0082 ,  H03H9/02259 ,  H03H9/2457 ,  H03H2009/02496 ,  H03H2009/02511

    摘要： A MEMS oscillator includes a resonator body and primary and secondary drive electrodes to electrostatically drive the resonator body. Primary and secondary sense electrodes sense motion of the resonator body. The primary and secondary drive and sense electrodes are configured to be used together during start-up of the MEMS oscillator. The secondary drive electrode and secondary sense electrode are disabled after start-up, while the primary drive and sense electrodes remain enabled to maintain oscillation.

    摘要翻译： MEMS振荡器包括谐振器体和用于静电驱动谐振器体的初级和次级驱动电极。 初级和次级感测电极感测谐振器体的运动。 主驱动和感测电极被配置为在MEMS振荡器启动期间一起使用。 辅助驱动电极和次级感测电极在启动后被禁用，而主驱动电极和感测电极保持启用以保持振荡。

    Resonant device with improved features
    8.
    发明授权
    Resonant device with improved features 有权
    具有改进功能的共振器件

    公开(公告)号：US08115556B2

    公开(公告)日：2012-02-14

    申请号：US12710678

    申请日：2010-02-23

    申请人： Laurent Duraffourg ,  Philippe Andreucci ,  Eric Colinet ,  Sebastien Hentz ,  Eric Ollier

    发明人： Laurent Duraffourg ,  Philippe Andreucci ,  Eric Colinet ,  Sebastien Hentz ,  Eric Ollier

    IPC分类号： H03L7/00

    CPC分类号： H03B5/323

    摘要： The device resonant comprises a plurality of synchronized oscillators. Each oscillator comprises a resonator which comprises detection means providing detection signals representative of oscillation of the resonator to a feedback loop connected to an excitation input of the resonator. The detection signals control the conductivity of the feedback loop of the oscillator. The excitation inputs of all the resonators are connected to a common point which constitutes the output of the resonant device. A capacitive load is connected between said common point and a reference voltage.

    摘要翻译： 器件谐振包括多个同步振荡器。 每个振荡器包括谐振器，该谐振器包括检测装置，其将表示谐振器的振荡的检测信号提供给连接到谐振器的激励输入的反馈环路。 检测信号控制振荡器的反馈回路的电导率。 所有谐振器的激励输入连接到构成谐振装置的输出的公共点。 电容性负载连接在所述公共点和参考电压之间。

    Beat frequency time standard
    9.
    发明授权
    Beat frequency time standard 失效
    BEAT FREQUENCY时间标准

    公开(公告)号：US3636469A

    公开(公告)日：1972-01-18

    申请号：US3636469D

    申请日：1969-11-10

    申请人： BUNKER RAMO

    发明人： REEFMAN WILLIAM E

    IPC分类号： G04C3/10 ,  G04C3/12 ,  G04F5/04 ,  H03B5/32 ,  H03B5/30

    CPC分类号： H03B5/323 ,  G04C3/107 ,  G04C3/12 ,  G04F5/04

    摘要： Two tuning forks, each resonant at a different frequency, are connected to generate a beat-frequency signal for a time standard. Each tuning fork is incorporated within the feedback loop of an electromechanical oscillator, the separate outputs of which are applied to a modulator. The difference or beatfrequency output signal of the modulator is used to drive an electric force transducer which, in turn, drives a clockwork. The present invention relates to improvements in generating time standard signals for clockworks and more particularly to a two tuning fork system for generating a stable, low-beat frequency signal. Advantageously, the present invention utilizes the structural and physical characteristics of high ''''Q'''' tuning forks as described in my copending application, Ser. No. 843,923, filed July 23, 1969, for ''''Tuning Forks and Oscillators Embodying the Same.