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91. 发明申请

US20140266474A1 SYSTEM AND METHOD FOR IMPROVED MEMS OSCILLATOR STARTUP 有权
标题翻译：改进的MEMS振荡器启动的系统和方法
公开(公告)号：US20140266474A1
公开(公告)日：2014-09-18
申请号：US13839079
申请日：2013-03-15
申请人： Mark E. Schlarmann , Deyou Fang , Keith L. Kraver
发明人： Mark E. Schlarmann , Deyou Fang , Keith L. Kraver
IPC分类号： H03L3/00
CPC分类号： H03L3/00 , H03B5/30 , H03B2200/0094
摘要： A MEMS resonator system comprises a MEMS resonator, kick start circuitry, feedback circuitry, an oscillator, and a switch. The MEMS resonator system is configured to provide a pulsed kick-start signal having a frequency and period such that energy delivered to the MEMS resonator is optimized in a short period of time, resulting is reduced oscillator startup time. The MEMS resonator system is configured to switch out the kick-start signal when the MEMS resonator oscillation has been achieved, and switch in feedback circuitry to maintain the MEMS resonator in a state of oscillation.
摘要翻译： MEMS谐振器系统包括MEMS谐振器，脚踏启动电路，反馈电路，振荡器和开关。 MEMS谐振器系统被配置为提供具有频率和周期的脉冲启动信号，使得在短时间内优化输送到MEMS谐振器的能量，从而减少振荡器启动时间。 MEMS谐振器系统被配置为当已经实现MEMS谐振器振荡时切换启动信号，并且切换反馈电路以将MEMS谐振器保持在振荡状态。

92. 发明授权

US08729971B2 Oscillator, and clock generator, semiconductor device, and electronic device including the same 有权
标题翻译：振荡器，时钟发生器，半导体器件和包括其的电子器件
公开(公告)号：US08729971B2
公开(公告)日：2014-05-20
申请号：US13328046
申请日：2011-12-16
申请人： Shinichi Kubota
发明人： Shinichi Kubota
IPC分类号： H03B5/36
CPC分类号： H03B5/364 , H03B5/06 , H03B2200/0012 , H03B2200/0062 , H03B2200/0082 , H03B2200/0094 , H03L5/00
摘要： An oscillator includes a reference voltage generator, an oscillation element configured to oscillate by either a drive voltage or a drive current and output an oscillation signal, a peak hold element configured to detect a peak level of the oscillation signal for output; and a controller configured to increase or decrease the drive voltage or drive current in accordance with the reference voltage generated by the reference voltage generator and the peak level output from the peak hold element.
摘要翻译：振荡器包括参考电压发生器，被配置为通过驱动电压或驱动电流振荡并输出振荡信号的振荡元件，配置成检测振荡信号的峰值电平以输出的峰值保持元件; 以及控制器，被配置为根据由参考电压发生器产生的参考电压和从峰值保持元件输出的峰值电平来增大或减小驱动电压或驱动电流。

93. 发明授权

US08487709B2 Oscillator circuit 有权
标题翻译：振荡电路
公开(公告)号：US08487709B2
公开(公告)日：2013-07-16
申请号：US13122694
申请日：2010-07-22
申请人： Shinji Ishikawa , Ichiro Yamane
发明人： Shinji Ishikawa , Ichiro Yamane
IPC分类号： H03B5/32
CPC分类号： H03B5/36 , H03B5/06 , H03B2200/0046 , H03B2200/0094 , H03K3/0307 , H03L3/00
摘要： An oscillator circuit comprises a piezoelectric vibrator, an amplifier device including inverters provided in a plurality of stages, and an inverter control device. The inverters provided in the plurality of stages includes a performance-variable inverter configured which is operational in both of an initial phase of oscillation startup and a post-startup phase where the oscillation is stabilized and capable of a variable performance depending on whether the initial phase of oscillation startup or the post-startup phase where the oscillation is stabilized, and an ON/OFF inverter which is operational in the initial phase of oscillation startup and disconnected in the post-startup phase where the oscillation is stabilized. The inverter control device have the performance-variable inverter and the ON/OFF inverter both operational and lowers the performance of the performance-variable inverter in the initial phase of oscillation startup, and the inverter control device disconnects the ON/OFF inverter and increases the performance of the performance-variable inverter in the post-startup phase where the oscillation is stabilized.
摘要翻译：振荡电路包括压电振动器，包括设置在多个级中的反相器的放大器装置和逆变器控制装置。设置在多级中的逆变器包括：性能可变逆变器，其配置为在振荡启动的初始阶段和振荡稳定的后启动阶段两者中都可操作，并且能够根据初始阶段振荡启动或振荡稳定的后启动阶段，以及在振荡稳定初始阶段中振荡启动的初始阶段和断开的ON / OFF逆变器。逆变器控制装置具有性能可变的变频器和ON / OFF变频器，在起动初始阶段均可使运行性能可变变频器的性能降低，变频器控制装置断开ON / OFF变频器，性能可变的逆变器在振荡稳定的后启动阶段的性能。

94. 发明申请

US20130141171A1 Method to Shorten Crystal Oscillator's Startup Time 有权
标题翻译：缩短晶体振荡器启动时间的方法
公开(公告)号：US20130141171A1
公开(公告)日：2013-06-06
申请号：US13519733
申请日：2010-12-28
申请人： Shuiwen Huang , Lin Huang
发明人： Shuiwen Huang , Lin Huang
IPC分类号： H03L7/00 , H03L3/00
CPC分类号： H03L7/00 , H03B5/364 , H03B2200/0094 , H03L3/00
摘要： An oscillator circuit includes an amplifier including at least two terminals for receiving a crystal and an automatic amplitude control loop coupled to the amplifier including biasing circuitry switched between a first operational mode and a second operational mode. The first operational mode occurs during an initial time period and the second operational mode occurs after the initial time period is expired. The biasing circuitry includes first and second PMOS transistor circuits, each transistor circuit including an unswitched PMOS transistor and a switched PMOS transistor. Alternatively, the biasing circuitry can include first and second NMOS transistor circuits, each transistor circuit including an unswitched NMOS transistor and a switched NMOS transistor. The biasing circuitry is under control of an internally generated control signal.
摘要翻译：振荡器电路包括放大器，其包括用于接收晶体的至少两个端子和耦合到放大器的自动幅度控制环路，该放大器包括在第一操作模式和第二操作模式之间切换的偏置电路。第一操作模式在初始时间段期间发生，并且在初始时间段到期之后发生第二操作模式。偏置电路包括第一和第二PMOS晶体管电路，每个晶体管电路包括非开关PMOS晶体管和开关PMOS晶体管。或者，偏置电路可以包括第一和第二NMOS晶体管电路，每个晶体管电路包括非开关NMOS晶体管和开关NMOS晶体管。偏置电路在内部产生的控制信号的控制下。

95. 发明授权

US08120439B2 Fast start-up crystal oscillator 有权
标题翻译：快速启动晶体振荡器
公开(公告)号：US08120439B2
公开(公告)日：2012-02-21
申请号：US12540367
申请日：2009-08-13
申请人： Aatmesh Shrivastava , Rajesh Yadav , Parvinder Kumar Rana
发明人： Aatmesh Shrivastava , Rajesh Yadav , Parvinder Kumar Rana
IPC分类号： H03B5/32 , H03L5/00
CPC分类号： H03B5/06 , H03B2200/0094
摘要： An exemplary fast start-up crystal oscillator with reduced start-up time. The exemplary oscillator reduces the start-up time (i.e., the time taken to attain sustained stable oscillations after the power is turned on) by increasing the negative resistance of a circuit. Increasing the negative resistance increases the rate of growth of the oscillations, thereby reducing start-up time. The exemplary crystal oscillator includes a gain stage with negative resistance. A crystal with shunt capacitance is placed in the feedback loop of the gain stage. A buffer is coupled to the gain stage such that it blocks the crystal shunt capacitance from loading the gain stage, effectively increasing the negative resistance of the gain stage. Further, an oscillation detection and control circuit is coupled between the crystal and the gain stage. The oscillation detection and control circuit connects the buffer during start-up, and disconnects the buffer once an oscillation signal attains sustained stable oscillations.
摘要翻译：具有降低启动时间的示例性快速启动晶体振荡器。示例性振荡器通过增加电路的负电阻来减小启动时间（即，在电源接通之后获得持续的稳定振荡所花费的时间）。增加负电阻会增加振荡的增长率，从而减少启动时间。示例性晶体振荡器包括具有负电阻的增益级。具有并联电容的晶体放置在增益级的反馈环路中。缓冲器耦合到增益级，使得其阻止晶体分流电容加载增益级，有效地增加增益级的负电阻。此外，振荡检测和控制电路耦合在晶体和增益级之间。振荡检测和控制电路在启动期间连接缓冲器，一旦振荡信号达到持续的稳定振荡，就断开缓冲器。

96. 发明授权

US07849744B2 Driving device, physical quantity measurement device, and electronic instrument 有权
标题翻译：驱动装置，物理量测量装置和电子仪器
公开(公告)号：US07849744B2
公开(公告)日：2010-12-14
申请号：US11882203
申请日：2007-07-31
申请人： Masahiro Kanai , Eitaro Otsuka , Naoki Yoshida
发明人： Masahiro Kanai , Eitaro Otsuka , Naoki Yoshida
IPC分类号： G01P15/09
CPC分类号： H03B5/36 , G01C19/5649 , G01P15/097 , H03B5/06 , H03B5/364 , H03B2200/0094
摘要： An oscillation driver circuit includes a gain control amplifier which causes a vibrator to produce driving vibrations by controlling an oscillation amplitude in an oscillation loop, and a comparator which generates a synchronous detection reference signal based on a signal in the oscillation loop. The oscillation driver circuit sets a gain in a first oscillation loop including the vibrator and the comparator to be larger than unity using an output from the comparator, and then causes the vibrator to produce the driving vibrations by controlling an oscillation amplitude in a second oscillation loop including the vibrator and the gain control amplifier in at least one of an oscillation startup state and a sleep mode.
摘要翻译：振荡驱动器电路包括增益控制放大器，其通过控制振荡回路中的振荡幅度使振动器产生驱动振动;以及比较器，其基于振荡回路中的信号产生同步检测参考信号。振荡驱动电路使用比较器的输出，将包括振子和比较器在内的第一振荡回路的增益设定为大于1，然后通过控制第二振荡回路中的振荡振幅来使振动器产生驱动振动包括在振荡启动状态和睡眠模式中的至少一个中的振动器和增益控制放大器。

97. 发明授权

US07848709B2 Multi-mode crystal oscillator 有权
标题翻译：多模晶体振荡器
公开(公告)号：US07848709B2
公开(公告)日：2010-12-07
申请号：US11849954
申请日：2007-09-04
申请人： Michael Steven Kappes
发明人： Michael Steven Kappes
IPC分类号： H04B1/04 , H04B1/15
CPC分类号： H03B5/366 , G06F1/3203 , G06F1/324 , H03B5/06 , H03B2200/0046 , H03B2200/005 , H03B2200/0052 , H03B2200/0094 , H03K3/0307 , H03K3/3545 , H04W52/029 , Y02D10/126 , Y02D70/122 , Y02D70/142 , Y02D70/144
摘要： In one embodiment of the present invention, two crystal oscillator circuits are coupled in parallel to provide differing performance according to mode. Generally, a first circuit provides low phase noise and high accuracy while a second circuit provides greater phase noise within an acceptable tolerance while consuming significantly less power in a low power mode of operation. The second circuit includes an entirely separate amplifier for the low power operation that tolerates a relatively smaller input signal swing but that consumes even less power. The first circuit, which comprises selectable amplification elements, and the second circuit are coupled in parallel with selectable resistive elements and capacitive elements to provide varying amounts of amplification and filtering according to whether an operational mode is in a startup mode, a normal mode, or a low power mode of operation.
摘要翻译：在本发明的一个实施例中，两个晶体振荡器电路并联耦合以根据模式提供不同的性能。通常，第一电路提供低相位噪声和高精度，而第二电路在可接受的容限内提供更大的相位噪声，同时在低功率工作模式下消耗明显更低的功率。第二电路包括用于低功率操作的完全分离的放大器，其容许相对较小的输入信号摆幅，但是消耗更少的功率。包括可选放大元件的第一电路和第二电路与可选择的电阻元件和电容元件并联耦合，以根据操作模式是处于启动模式，正常模式还是在正常模式下提供不同量的放大和滤波低功耗操作模式。

98. 发明申请

US20090184777A1 METHOD AND APPARATUS FOR GENERATING OSCILLATING SIGNALS 有权
标题翻译：用于产生振荡信号的方法和装置
公开(公告)号：US20090184777A1
公开(公告)日：2009-07-23
申请号：US12411278
申请日：2009-03-25
申请人： Russell John Fagg , Charles E. Wheatley, III
发明人： Russell John Fagg , Charles E. Wheatley, III
IPC分类号： H03L5/00
CPC分类号： H03L1/022 , H03B5/06 , H03B5/1265 , H03B2200/0066 , H03B2200/0094 , H03L3/00 , H04B2001/6908
摘要： An apparatus for generating an oscillating signal that includes a circuit to accelerate the time in which an oscillating signal reaches a defined steady-state condition from a cold start. The apparatus includes an oscillating circuit to generate an oscillating signal; a first circuit to supply a first current to the oscillating circuit; and a second circuit to supply a second current to the oscillating circuit, wherein the first and second currents are adapted to reduce the time duration for the oscillating signal to reach a defined steady-state condition. The apparatus may be useful in communication systems that use low duty cycle pulse modulation to establish one or more communications channels, whereby the apparatus begins generating an oscillating signal at approximately the beginning of the pulse and terminates the oscillating signal at approximately the end of the pulse.
摘要翻译：一种用于产生振荡信号的装置，其包括用于加速从冷启动振荡信号达到确定的稳态状态的时间的电路。该装置包括产生振荡信号的振荡电路; 向振荡电路提供第一电流的第一电路; 以及向振荡电路提供第二电流的第二电路，其中第一和第二电流适于减小振荡信号达到所定义的稳态条件的持续时间。该装置在使用低占空比脉冲调制以建立一个或多个通信信道的通信系统中可能是有用的，由此该装置在大约开始的脉冲处开始产生振荡信号，并在脉冲的大致末端终止振荡信号。

99. 发明申请

US20090102568A1 VOLTAGE CONTROLLED OSCILLATOR WITH CASCADED EMITTER FOLLOWER BUFFER STAGES 有权
标题翻译：电压控制振荡器，带有发光二极管缓冲器级
公开(公告)号：US20090102568A1
公开(公告)日：2009-04-23
申请号：US11873793
申请日：2007-10-17
申请人： Yumin Lu , Ian Gresham
发明人： Yumin Lu , Ian Gresham
IPC分类号： H03B5/12 , H03B1/00
CPC分类号： H03L7/099 , H03B5/04 , H03B5/1218 , H03B5/1231 , H03B5/1243 , H03B2200/0094 , H03L1/022
摘要： A voltage controlled oscillator (VCO) is provided that includes an output buffer having a first buffer stage including a first transistor and a second buffer stage including a second transistor. The first and second transistors are connected in a cascaded emitter follower buffer arrangement.
摘要翻译：提供了一种压控振荡器（VCO），其包括具有包括第一晶体管的第一缓冲级和包括第二晶体管的第二缓冲级的输出缓冲器。第一和第二晶体管连接在级联射极跟随器缓冲器装置中。

100. 发明申请

US20070298729A1 MULTI-MODE CRYSTAL OSCILLATOR 有权
标题翻译：多模式水晶振荡器
公开(公告)号：US20070298729A1
公开(公告)日：2007-12-27
申请号：US11849954
申请日：2007-09-04
申请人： Michael Kappes
发明人： Michael Kappes
IPC分类号： H04B1/40
CPC分类号： H03B5/366 , G06F1/3203 , G06F1/324 , H03B5/06 , H03B2200/0046 , H03B2200/005 , H03B2200/0052 , H03B2200/0094 , H03K3/0307 , H03K3/3545 , H04W52/029 , Y02D10/126 , Y02D70/122 , Y02D70/142 , Y02D70/144
摘要： In one embodiment of the present invention, two crystal oscillator circuits are coupled in parallel to provide differing performance according to mode. Generally, a first circuit provides low phase noise and high accuracy while a second circuit provides greater phase noise within an acceptable tolerance while consuming significantly less power in a low power mode of operation. The second circuit includes an entirely separate amplifier for the low power operation that tolerates a relatively smaller input signal swing but that consumes even less power. The first circuit, which comprises selectable amplification elements, and the second circuit are coupled in parallel with selectable resistive elements and capacitive elements to provide varying amounts of amplification and filtering according to whether an operational mode is in a startup mode, a normal mode, or a low power mode of operation.
摘要翻译：在本发明的一个实施例中，两个晶体振荡器电路并联耦合以根据模式提供不同的性能。通常，第一电路提供低相位噪声和高精度，而第二电路在可接受的容限内提供更大的相位噪声，同时在低功率工作模式下消耗明显更低的功率。第二电路包括用于低功率操作的完全分离的放大器，其容许相对较小的输入信号摆幅，但是消耗更少的功率。包括可选放大元件的第一电路和第二电路与可选择的电阻元件和电容元件并联耦合，以根据操作模式是处于启动模式，正常模式还是在正常模式下提供不同量的放大和滤波低功耗操作模式。

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