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1. 发明授权

US07382300B1 System-on-chip (SoC) integrated circuit including interleaved delta-sigma analog-to-digital converter (ADC) 有权
标题翻译：系统级芯片（SoC）集成电路，包括交错式Δ-Σ模数转换器（ADC）
公开(公告)号：US07382300B1
公开(公告)日：2008-06-03
申请号：US11564331
申请日：2006-11-29
申请人： Kartik Nanda , John L. Melanson , Timothy Thomas Rueger
发明人： Kartik Nanda , John L. Melanson , Timothy Thomas Rueger
IPC分类号： H03M3/00
CPC分类号： H03M3/346 , H03M3/332 , H03M3/334 , H03M3/43 , H03M3/438 , H03M3/474
摘要： A system-on-chip (SoC) integrated circuit including an interleaved delta-sigma analog to digital converter (ADC) provides for reduced noise in the ADC conversions. The ADC is operated intermittently and the balance of the digital circuits forming the system are halted while the conversions take place. The halted portion of the system may include an output low-pass filter of the ADC. The system may include a processor core or other logic having a clock frequency unrelated to the ADC modulator clock frequency that is not otherwise clock-managed to reduce noise induced in the converter output by the operation of the core or other logic.
摘要翻译：包括交错式Δ-Σ模数转换器（ADC）的片上系统（SoC）集成电路可提供ADC转换中的降低的噪声。 ADC间歇性运行，形成系统的数字电路的平衡在转换发生时停止。系统的暂停部分可以包括ADC的输出低通滤波器。该系统可以包括处理器核心或具有与ADC调制器时钟频率无关的时钟频率的其它逻辑，否则不是由时钟管理以便通过核心或其他逻辑的操作来减少在转换器输出中感应的噪声。

2. 发明授权

US07317411B1 Delta-sigma modulator having quantizer code pattern detection controlled dither 有权
标题翻译：具有量化器码模式检测的Delta-sigma调制器控制抖动
公开(公告)号：US07317411B1
公开(公告)日：2008-01-08
申请号：US11534195
申请日：2006-09-21
申请人： Kartik Nanda , Timothy Thomas Rueger
发明人： Kartik Nanda , Timothy Thomas Rueger
IPC分类号： H03M3/00
CPC分类号： H03M3/334 , H03M3/332 , H03M3/43 , H03M3/452
摘要： A delta-sigma having quantizer code pattern detection controlled dither reduces the probability of “stuck” code sequences that occur when the input signal and feedback signal are equal and thus no quantizer output change occurs. In particular, in modulators that are periodically reset, the pattern detection and dither control reduce the probability of a stuck code sequence at startup. A pattern detection circuit detects a sequence of unchanging quantizer output values and injects a signal at the quantizer input to cause the quantizer to change levels. The injected signal may be a dither signal that is increased in amplitude in response to the detection of unchanging code sequences and then decreased when the quantizer output changes.
摘要翻译：具有量化器码模式检测控制抖动的Δ-sigma降低了当输入信号和反馈信号相等时发生的“卡”码序列的概率，因此不会发生量化器输出变化。特别地，在周期性复位的调制器中，模式检测和抖动控制降低了在启动时卡片代码序列的概率。模式检测电路检测不变量化器输出值的序列，并在量化器输入端注入信号，使量化器变化电平。注入的信号可以是响应于不变代码序列的检测而在幅度上增加的抖动信号，然后当量化器输出改变时减小。

3. 发明授权

US07298308B1 Delta-sigma modulator having predictive-controlled power consumption 有权
标题翻译：具有预测控制功率消耗的Δ-Σ调制器
公开(公告)号：US07298308B1
公开(公告)日：2007-11-20
申请号：US11465468
申请日：2006-09-11
申请人： Timothy Thomas Rueger , John L. Melanson
发明人： Timothy Thomas Rueger , John L. Melanson
IPC分类号： H03M3/00
CPC分类号： H03M3/32 , H03M3/452
摘要： A delta-sigma modulator having predictive-controlled power consumption provides for reduced power consumption in analog-to-digital converters. The initial integrator stage of the delta-sigma modulator has a bias control input, which controls the level of power consumed by the integrator. The bias control input is coupled to a predictor circuit that predicts the level of change at the output of the integrator for the sample cycle. The predictor circuit may use changes in the output of the modulator quantizer alone or in combination with measured changes in the input signal in order to predict the level of change in the integrator output. The quantizer output may be differentiated to remove low frequency components and thereby provide the predictive input from the quantizer. Alternatively, steps in the quantizer output computed by differences may be used directly.
摘要翻译：具有预测控制功率消耗的Δ-Σ调制器提供了模数转换器中的降低的功耗。 Δ-Σ调制器的初始积分器级具有偏置控制输入，其控制积分器消耗的功率电平。偏置控制输入耦合到预测器电路，该预测器电路预测用于采样周期的积分器的输出的变化水平。预测器电路可以单独使用调制器量化器的输出或与输入信号中测量的变化相结合的改变，以便预测积分器输出的变化水平。量化器输出可以被区分以去除低频分量，从而提供来自量化器的预测输入。或者，可以直接使用通过差分计算的量化器输出中的步骤。

4. 发明授权

US06946890B1 Low noise level shifting circuits and methods and systems using the same 有权
标题翻译：低噪声电平移位电路及其使用方法和系统
公开(公告)号：US06946890B1
公开(公告)日：2005-09-20
申请号：US10798661
申请日：2004-03-11
申请人： Tom Gong Lei , Timothy Thomas Rueger , Stephen Timothy Hodapp
发明人： Tom Gong Lei , Timothy Thomas Rueger , Stephen Timothy Hodapp
IPC分类号： H03F3/45 , H03L5/00
CPC分类号： H03F3/45946
摘要： A driver circuit includes an operational amplifier having an input and an output coupled by a feedback element. A voltage level shifter generates a voltage drop from the operational amplifier output to the operational amplifier input with a current source transistor setting a current controlling the voltage drop across the feedback element. A chopper circuit shifts flicker noise generated by the current source transistor to a higher frequency spectrum.
摘要翻译：驱动器电路包括具有由反馈元件耦合的输入和输出的运算放大器。电压电平移位器利用电流源晶体管产生从运算放大器输出到运算放大器输入的电压降，该电流源晶体管设置控制跨反馈元件的电压降的电流。斩波电路将由电流源晶体管产生的闪烁噪声转换到更高的频谱。

5. 发明授权

US07068200B1 Methods and circuit for suppressing transients in an output driver and data conversion systems using the same 有权
标题翻译：用于抑制输出驱动器和使用其的数据转换系统中的瞬变的方法和电路
公开(公告)号：US07068200B1
公开(公告)日：2006-06-27
申请号：US10868329
申请日：2004-06-15
申请人： Stephen Timothy Hodapp , Timothy Thomas Rueger , Bruce Eliot Duewer
发明人： Stephen Timothy Hodapp , Timothy Thomas Rueger , Bruce Eliot Duewer
IPC分类号： H03M1/66
CPC分类号： H03M1/0881 , H03M1/66
摘要： A driver circuit with power-down transient suppression includes an amplifier for driving a load coupled to an output of the amplifier, a ramp-down voltage generator having a capacitor and a resistor for generating a ramp-down voltage during power-down of the amplifier, and a differential transistor pair responsive to the ramp-down voltage for pulling-down current at the output of the amplifier during power-down of the amplifier.
摘要翻译：具有掉电瞬变抑制的驱动器电路包括用于驱动耦合到放大器的输出的负载的放大器，具有电容器的降压电压发生器和用于在放大器掉电期间产生斜坡下降电压的电阻器以及在放大器断电期间响应于用于在放大器的输出处的下拉电流的降压电压的差分晶体管对。

6. 发明授权

US08913051B2 LCD controller with oscillator prebias control 有权
标题翻译： LCD控制器具有振荡器prebias控制
公开(公告)号：US08913051B2
公开(公告)日：2014-12-16
申请号：US12495600
申请日：2009-06-30
申请人： Douglas Piasecki , Thomas S. David , Timothy Thomas Rueger , Stefan Mastovich , Jia-Hau Liu
发明人： Douglas Piasecki , Thomas S. David , Timothy Thomas Rueger , Stefan Mastovich , Jia-Hau Liu
IPC分类号： G06F3/038 , G06F3/041 , G06F3/044 , G09G3/36 , G09G3/18
CPC分类号： G09G3/18 , G06F3/0412 , G06F3/044 , G09G3/3611 , G09G3/3696 , G09G2310/0278 , G09G2330/02 , G09G2330/022
摘要： An LCD controller includes a charge pump circuit for generating a charge voltage responsive to an external voltage and a clock signal. An oscillator generates the clock signal responsive to at least one bias voltage. The oscillator has a high power mode of operation and a low power mode of operation. Bias circuitry for applies the at least one bias voltage to the oscillator. The at least one bias voltage is applied to the oscillator from an external source in the high power mode of operation and the at least one bias voltage is applied to the oscillator from a source within the oscillator in the low power mode of operation. An LCD driver voltage circuit generates a plurality of LCD driver voltages for driving segments of an LCD display responsive to the charge voltage.
摘要翻译： LCD控制器包括用于产生响应于外部电压和时钟信号的充电电压的电荷泵电路。振荡器响应于至少一个偏置电压产生时钟信号。振荡器具有高功率工作模式和低功耗工作模式。用于将至少一个偏置电压施加到振荡器的偏置电路。在高功率工作模式下，至少一个偏置电压从外部源施加到振荡器，并且至少一个偏置电压在低功耗工作模式下从振荡器内的源施加到振荡器。 LCD驱动器电压电路响应于充电电压产生用于驱动LCD显示器段的多个LCD驱动器电压。

7. 发明授权

US09058761B2 System and method for LCD loop control 有权
标题翻译： LCD环路控制系统及方法
公开(公告)号：US09058761B2
公开(公告)日：2015-06-16
申请号：US12495564
申请日：2009-06-30
申请人： Douglas Piasecki , Thomas S. David , Timothy Thomas Rueger , Stefan Mastovich , Jia-Hau Liu
发明人： Douglas Piasecki , Thomas S. David , Timothy Thomas Rueger , Stefan Mastovich , Jia-Hau Liu
IPC分类号： G06F3/038 , G09G3/04
CPC分类号： G09G3/04 , G09G2330/021
摘要： An LCD controller includes a charge pump for generating a charge voltage responsive to an external voltage and a clock signal. The controller further includes an oscillator for generating the clock signal responsive to an oscillator control signal. An LCD driver voltage circuit generates a plurality of LCD driver voltages for driving segments of an associated LCD display. A loop control circuit within the LCD controller monitors an LCD driver voltage from the LCD driver voltage circuit and generates the oscillator control signal responsive thereto to enable and disable the oscillator.
摘要翻译： LCD控制器包括用于产生响应于外部电压和时钟信号的充电电压的电荷泵。所述控制器还包括用于响应于振荡器控制信号产生时钟信号的振荡器。 LCD驱动器电压电路产生用于驱动相关LCD显示器的段的多个LCD驱动器电压。 LCD控制器内的环路控制电路监视来自LCD驱动器电压电路的LCD驱动器电压，并响应于此产生振荡器控制信号以启用和禁用振荡器。

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