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31. 发明授权

US09634676B2 Circuits and methods providing clock frequency adjustment in response to supply voltage changes 有权
公开(公告)号：US09634676B2
公开(公告)日：2017-04-25
申请号：US14789095
申请日：2015-07-01
申请人： QUALCOMM Incorporated
发明人： Ashok Swaminathan , Christian Venerus , Marzio Pedrali-Noy
IPC分类号： H03L7/06 , H03L7/099 , H03B5/04 , H03L1/00
CPC分类号： H03L7/099 , H03B5/04 , H03B2202/042 , H03B2202/06 , H03L1/00
摘要： Methods, systems, and circuits for providing compensation for voltage variation are disclosed. A system includes: a voltage comparator configured to assert a control signal in response to detecting that one or more of power supply voltages droops below a threshold amount; a phase locked loop (PLL) configured to divide an output frequency for the PLL in response to the assertion of the control signal; a plurality of voltage sensors corresponding to the plurality of power supply voltages, the voltage sensors configured to output respective digital signals indicative of a voltage level of its corresponding power supply voltage; and a control circuit configured to control an oscillator frequency in the PLL during the open-loop mode responsive to the respective digital signals.

32. 发明授权

US09520886B2 Methods and devices for error correction of a signal using delta sigma modulation 有权
标题翻译：用于使用Δ-Σ调制的信号纠错的方法和装置
公开(公告)号：US09520886B2
公开(公告)日：2016-12-13
申请号：US14907596
申请日：2013-11-28
申请人： Smart Energy Instruments Inc.
发明人： Donald Jeffrey Dionne , Brian Leonard William Howse , Jennifer Marie McCann
IPC分类号： H03L7/085 , H03L7/099 , H03L7/095 , G06F17/10 , G06F1/02 , H03L1/00 , H03L7/081 , H03M3/00
CPC分类号： H03L7/0994 , G06F1/02 , G06F17/10 , H03L1/00 , H03L7/081 , H03L7/095 , H03M3/30
摘要： A method for correcting long-term phase drift of a crystal oscillator in a numerically-controlled oscillator is described. The method includes determining the phase error in an oscillator signal in comparison with an external time base; delta-sigma modulating the phase error to generate a delta-sigma error bitstream; conditionally adding or subtracting an error correction step size from a phase increment value in each clock cycle based on the delta-sigma error bitstream, to create a modulated phase increment value; and adding the modulated phase increment value to a phase accumulator to generate an error-corrected output digital signal. The delta-sigma-based error correction method avoids the use of multipliers. The same delta-sigma error signal can be used in multiple numerically-controlled oscillators configured to different output frequency if driven by the same reference oscillator.
摘要翻译：描述了用于校正数控振荡器中的晶体振荡器的长期相位漂移的方法。该方法包括：与外部时基相比确定振荡器信号中的相位误差; delta-sigma调制相位误差以产生Δ-Σ误差比特流; 基于Δ-Σ误差比特流，有条件地从每个时钟周期的相位增量值中增加或减去误差校正步长，以产生调制相位增量值; 并将调制相位增量值相加到相位累加器以产生经纠错的输出数字信号。基于delta-sigma的纠错方法避免了乘法器的使用。如果由相同的参考振荡器驱动，则可以在配置为不同输出频率的多个数控振荡器中使用相同的delta-sigma误差信号。

33. 发明授权

US09503098B1 Current-feedback operational amplifier-based sinusoidal oscillator 有权
标题翻译：电流反馈运算放大器的正弦振荡器
公开(公告)号：US09503098B1
公开(公告)日：2016-11-22
申请号：US15092591
申请日：2016-04-06
申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
发明人： Muhammad Taher Abuelma'Atti , Eyas Saleh Alsuhaibani
IPC分类号： H03B5/20 , H03L1/00 , H03K4/56 , H03B28/00 , H03K4/71
CPC分类号： H03K4/71 , H03B5/20 , H03B28/00 , H03K4/56
摘要： The current-feedback operational amplifier-based sinusoidal oscillator circuit includes a pair of CFOAs connected to each other using five resistors and two capacitors. The condition and the frequency of oscillation are fully coupled, and thus none of them can be controlled without disturbing the other. The oscillator circuit provides a high impedance output current and two low impedance output voltages.
摘要翻译：基于电流反馈运算放大器的正弦振荡器电路包括使用五个电阻器和两个电容器彼此连接的一对CFOAs。振荡的条件和频率是完全耦合的，因此它们都不能被控制而不会干扰另一个。振荡器电路提供高阻抗输出电流和两个低阻抗输出电压。

34. 发明授权

US09467148B2 Oscillation circuit, oscillator, electronic device, moving object, and control method of oscillator 有权
标题翻译：振荡电路，振荡器，电子器件，移动物体和振荡器的控制方法
公开(公告)号：US09467148B2
公开(公告)日：2016-10-11
申请号：US14842000
申请日：2015-09-01
申请人： Seiko Epson Corporation
发明人： Nobutaka Shiozaki , Yuichi Toriumi
IPC分类号： H03L1/00 , H03B5/32
CPC分类号： H03L1/00 , H03B5/32
摘要： In order to reduce the possibility of erroneous switching of an operation mode, an oscillation circuit, an oscillator, an electronic device and a moving object including: a power source detecting section that detects a power supply state; a determining section that determines an input state of a predetermined signal; and a control section that switches a operation mode when the determining section determines that input of the predetermined signal is detected within a predetermined time after it is detected that power is supplied, and a control method of the oscillator are provided.
摘要翻译：为了减少操作模式，振荡电路，振荡器，电子设备和移动物体的错误切换的可能性，包括：电源检测部分，其检测供电状态; 确定部分，确定预定信号的输入状态; 以及控制部，其在确定部确定在检测到所述电力被提供之后的预定时间内检测到所述预定信号的输入并且提供所述振荡器的控制方法时，切换操作模式。

35. 发明申请

US20160164460A1 OSCILLATOR REGULATION CIRCUITRY AND METHOD 有权
标题翻译：振荡器调节电路和方法
公开(公告)号：US20160164460A1
公开(公告)日：2016-06-09
申请号：US14560788
申请日：2014-12-04
申请人： THE REGENTS OF THE UNIVERSITY OF MICHIGAN
发明人： Taekwang JANG , Dennis Michael Sylvester , David Theodore Blaauw
IPC分类号： H03B5/12 , H03L1/00 , H03L7/099
CPC分类号： H03B5/1265 , H03B5/1271 , H03L1/00 , H03L7/00 , H03L7/099 , H03L7/18 , H03L7/187 , H03L7/193
摘要： Oscillator regulation circuitry is provided for regulating a frequency of an output signal generated by an oscillator. Oscillator regulation circuitry has frequency sensing circuitry for sensing the frequency of the output signal and generating a first signal depending on the frequency, and control circuitry which generates the oscillator control signal based on the comparison between the first signal and a non-oscillating reference signal. The frequency sensing circuitry includes at least one switched capacitor. This approach provides improved noise reduction, less sensitivity to process, temperature and voltage variations, and a more linear scaling of the frequency with the reference signal, compared to previous techniques.
摘要翻译：提供振荡器调节电路用于调节由振荡器产生的输出信号的频率。振荡器调节电路具有用于感测输出信号的频率并根据频率产生第一信号的频率感测电路，以及基于第一信号和非振荡参考信号之间的比较产生振荡器控制信号的控制电路。频率感测电路包括至少一个开关电容器。与以前的技术相比，该方法提供了改进的噪声降低，对过程的敏感性，温度和电压变化以及频率与参考信号的更线性缩放。

36. 发明授权

US09325323B2 CMOS oscillator having stable frequency with process, temperature, and voltage variation 有权
标题翻译：具有稳定频率的CMOS振荡器，具有过程，温度和电压变化
公开(公告)号：US09325323B2
公开(公告)日：2016-04-26
申请号：US14474091
申请日：2014-08-30
申请人： STMICROELECTRONICS INTERNATIONAL N.V.
发明人： Vikas Rana , Ganesh Raj R
IPC分类号： H03K3/03 , H03L1/00 , H03L7/14 , H03L7/18 , H03L7/093 , H03L7/089 , H03L7/081 , H03L7/099
CPC分类号： H03L1/00 , H03K3/011 , H03K3/0315 , H03K3/0322 , H03K3/354 , H03L1/022 , H03L7/0812 , H03L7/0891 , H03L7/0895 , H03L7/093 , H03L7/0995 , H03L7/0997 , H03L7/148 , H03L7/18
摘要： A clock signal generation circuit configured to generate the clock signal having a frequency that is maintained across variations in a number of operating conditions, such as changes in supply voltage, temperature and processing time. In an embodiment, the frequency spread of the generated clock signal of a PVT-compensated CMOS ring oscillator is configured to compensate for variations in the supply voltage, as well as for variations in process and temperature via a process and temperature compensation circuit. The PVT-compensated CMOS ring oscillator includes a regulated voltage supply circuit to generate a supply voltage that is resistant to variations due to changes in the overall supply voltage.
摘要翻译：时钟信号生成电路，被配置为生成具有在诸如电源电压，温度和处理时间的变化的操作条件的数量的变化中保持的频率的时钟信号。在一个实施例中，PVT补偿的CMOS环形振荡器的所产生的时钟信号的频率扩展被配置为补偿电源电压的变化，以及通过处理和温度补偿电路对工艺和温度的变化。 PVT补偿的CMOS环形振荡器包括一个稳压电源，用于产生一个电源电压，该电源电压抵抗由于整个电源电压的变化引起的变化。

37. 发明授权

US09314632B2 Pulse-by-pulse compliance voltage generation for an implantable stimulator 有权
标题翻译：针对可植入式刺激器的逐脉冲顺应电压产生
公开(公告)号：US09314632B2
公开(公告)日：2016-04-19
申请号：US13861079
申请日：2013-04-11
申请人： Boston Scientific Neuromodulation Corporation
发明人： Goran Marnfeldt , Jess Shi
IPC分类号： A61N1/36 , A61N1/378 , A61N1/08 , A61N1/37 , H03L1/00 , A61N1/02
CPC分类号： A61N1/36153 , A61N1/025 , A61N1/08 , A61N1/3605 , A61N1/36146 , A61N1/37 , A61N1/378 , H03L1/00
摘要： Circuitry for generating a compliance voltage (V+) for the current sources and/or sinks in an implantable stimulator device in disclosed. The circuitry assesses whether V+ is optimal for a given pulse, and if not, adjusts V+ for the next pulse. The circuitry uses amplifiers to measure the voltage drop across active PDACs (current sources) and NDAC (current sinks) at an appropriate time during the pulse. The measured voltages are assessed to determine whether they are high or low relative to optimal values. If low, a V+ regulator is controlled to increase V+ for the next pulse; if not, the V+ regulator is controlled to decrease V+ for the next pulse. Through this approach, gradual changes that may be occurring in the implant environment can be accounted for, with V+ adjusted on a pulse-by-pulse basis to keep the voltage drops at or near optimal levels for efficient DAC operation.
摘要翻译：用于在所公开的可植入刺激器装置中产生电流源和/或汇的顺应性电压（V +）的电路。电路评估V +对于给定脉冲是否是最佳的，如果不是，则调整下一个脉冲的V +。该电路使用放大器在脉冲期间的适当时间测量有源PDAC（电流源）和NDAC（电流吸收）之间的电压降。评估测量的电压以确定它们相对于最佳值是高还是低。如果低电平，则控制V +调节器以增加下一个脉冲的V +; 如果不是，则控制V +调节器以降低下一个脉冲的V +。通过这种方法，可以考虑在种植体环境中可能发生的逐渐变化，V +在逐脉冲的基础上进行调整，以保持电压降至或接近最佳水平，以实现高效的DAC操作。

38. 发明授权

US09313057B2 Target signal determination method and associated apparatus 有权
标题翻译：目标信号确定方法及相关装置
公开(公告)号：US09313057B2
公开(公告)日：2016-04-12
申请号：US12912200
申请日：2010-10-26
申请人： Ching-Hsiang Chuang , Shao-Ping Hung , Tien-Hsin Ho
发明人： Ching-Hsiang Chuang , Shao-Ping Hung , Tien-Hsin Ho
IPC分类号： G01R1/04 , G01R1/40 , G06F3/01 , G06F3/03 , H04L25/06 , H03L1/00 , G10L25/06
CPC分类号： H04L25/065 , G10L25/06 , H03L1/00
摘要： A method and associated apparatus using delay correlation for determining whether an input signal is a target signal is provided. The method includes sampling the input signal to generate 2N sample values, the sample values having a period N, where N is a positive integer; calculating the 2N sample values to obtain a first value according to a first operation method; calculating the 2N sample values to obtain a second value according to a second operation method; obtaining a determination value according to the first value and the second value; and determining whether the input signal is the target signal according to the determination value and a threshold.
摘要翻译：提供了一种使用延迟相关来确定输入信号是否是目标信号的方法和相关装置。该方法包括采样输入信号以产生2N个采样值，采样值具有周期N，其中N是正整数; 根据第一操作方法计算2N个样本值以获得第一值; 根据第二操作方法计算2N个样本值以获得第二值; 根据第一值和第二值获得确定值; 以及根据所述确定值和阈值确定所述输入信号是所述目标信号。

39. 发明授权

US09287880B2 Integrated circuit device having an injection-locked oscillator 有权
标题翻译：具有注入锁定振荡器的集成电路装置
公开(公告)号：US09287880B2
公开(公告)日：2016-03-15
申请号：US13988615
申请日：2011-11-10
申请人： Marko Aleksic , Brian S. Leibowitz
发明人： Marko Aleksic , Brian S. Leibowitz
IPC分类号： H03L7/24 , H03L1/00 , H03K3/03 , H03L7/083
CPC分类号： H03L1/00 , H03K3/0315 , H03L7/083 , H03L7/24
摘要： A variable injection-strength injection-locked oscillator (ILO) is described. The variable injection-strength ILO can output an output clock signal based on an input clock signal. The variable injection-strength ILO can pause, restart, slow down, or speed up the output clock signal synchronously with respect to the input clock signal in response to receiving power mode information. Specifically, the variable injection-strength ILO can be operated under relatively strong injection when the input clock signal is paused, restarted, slowed down, or sped up.
摘要翻译：描述了可变注射强度注射锁定振荡器（ILO）。可变注入强度ILO可以基于输入时钟信号输出输出时钟信号。响应于接收功率模式信息，可变注入强度ILO可以相对于输入时钟信号同步地暂停，重新启动，减慢或加速输出时钟信号。具体地说，当输入时钟信号被暂停，重新启动，减速或加速时，可变注入强度ILO可以在相对强的注入下操作。

40. 发明授权

US09252709B2 Apparatuses and methods for providing oscillation signals 有权
公开(公告)号：US09252709B2
公开(公告)日：2016-02-02
申请号：US13882144
申请日：2012-10-19
申请人： MICRON TECHNOLOGY, INC.
发明人： Jun Wu , Bin Liu
IPC分类号： H03K3/02 , H03K4/502 , H03B9/14 , H03L1/00 , H03L7/089
CPC分类号： H03B5/24 , H03B5/04 , H03B9/141 , H03L1/00 , H03L7/0891
摘要： Apparatuses and methods are disclosed for oscillators that are substantially insensitive to supply voltage variations. In one such example apparatus, a capacitance circuit is configured to be charged and discharged. Charging and discharging circuits are coupled to the capacitance circuit and configured to charge and discharge, respectively, the capacitance circuit by charging and discharging currents responsive to charge and discharge signals. A control circuit is coupled to the charging circuit and the discharging circuit, and is configured to provide the charge and discharge signals responsive to a voltage of the capacitance circuit, and is further configured to provide an oscillation signal responsive to the voltage of the capacitance circuit. The charging current, the discharging current, or both the charging and discharging currents are proportional to a difference between a first reference voltage and a second reference voltage.

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