公开(公告)号：US20130246000A1

公开(公告)日：2013-09-19

申请号：US13877180

申请日：2011-10-17

申请人： Xuecheng Jin ,  Haohao Wang ,  Zhuxiang Yao ,  Taishan Xu ,  Genhua Zou ,  Bijun Li ,  Jianhua Xiong ,  Wei Xu ,  Feng Wen ,  Huimin Peng

发明人： Xuecheng Jin ,  Haohao Wang ,  Zhuxiang Yao ,  Taishan Xu ,  Genhua Zou ,  Bijun Li ,  Jianhua Xiong ,  Wei Xu ,  Feng Wen ,  Huimin Peng

IPC分类号： G06F17/18

CPC分类号： G06F17/18 ,  G05B23/0289 ,  G06Q10/06

摘要： A method of power system preventive control candidate measures identification self-adaptive to external environment, which is applicable to dynamic identification of stations and power equipment under the effect of calamity, and judgment of preventive control measures that lose or restore control capability, and those for which control range or cost has changed. Automatic online identification of set of preventive control candidate measures includes two tasks: identification of stations and power equipment under the effect of calamity, and adjustment of the space of preventive control measures. According to information of power transmission line fault probability due to calamity, online dynamic quantitative assessment of stations and equipment is performed under the effect of external environment, and automatically correct control range and control cost of the measures according to the effect on equipment, so that the result of preventive control adapts to real-time external environment, ensuring feasibility and economy of auxiliary decision making.

摘要翻译： 电力系统预防控制候选措施识别方法自适应外部环境，适用于灾害影响下电站和电力设备的动态识别，判断失控或恢复控制能力的预防控制措施; 哪个控制范围或成本有所改变。 自动在线识别一套预防控制候选措施包括两个任务：在灾害影响下识别车站和动力设备，调整预防控制措施的空间。 根据输电线故障概率信息，在外部环境影响下进行站点设备的在线动态定量评估，并根据对设备的影响自动纠正措施的控制范围和控制成本， 预防控制的结果适应实时外部环境，确保辅助决策的可行性和经济性。

公开(公告)号：US09239816B2

公开(公告)日：2016-01-19

申请号：US13877180

申请日：2011-10-17

申请人： Xuecheng Jin ,  Haohao Wang ,  Zhuxiang Yao ,  Taishan Xu ,  Genhua Zou ,  Bijun Li ,  Jianhua Xiong ,  Wei Xu ,  Feng Wen ,  Huimin Peng

发明人： Xuecheng Jin ,  Haohao Wang ,  Zhuxiang Yao ,  Taishan Xu ,  Genhua Zou ,  Bijun Li ,  Jianhua Xiong ,  Wei Xu ,  Feng Wen ,  Huimin Peng

IPC分类号： G06F17/18 ,  G05B23/02 ,  G06Q10/06

CPC分类号： G06F17/18 ,  G05B23/0289 ,  G06Q10/06

摘要： A method of power system preventive control candidate measures identification self-adaptive to external environment, which is applicable to dynamic identification of stations and power equipment under the effect of calamity, and judgment of preventive control measures that lose or restore control capability, and those for which control range or cost has changed. Automatic online identification of set of preventive control candidate measures includes two tasks: identification of stations and power equipment under the effect of calamity, and adjustment of the space of preventive control measures. According to information of power transmission line fault probability due to calamity, online dynamic quantitative assessment of stations and equipment is performed under the effect of external environment, and automatically correct control range and control cost of the measures according to the effect on equipment, so that the result of preventive control adapts to real-time external environment, ensuring feasibility and economy of auxiliary decision making.

摘要翻译： 电力系统预防控制候选措施识别方法自适应外部环境，适用于灾害影响下电站和电力设备的动态识别，判断失控或恢复控制能力的预防控制措施; 哪个控制范围或成本有所改变。 自动在线识别一套预防控制候选措施包括两个任务：在灾害影响下识别车站和动力设备，调整预防控制措施的空间。 根据输电线故障概率信息，在外部环境影响下进行站点设备的在线动态定量评估，并根据对设备的影响自动纠正措施的控制范围和控制成本， 预防控制的结果适应实时外部环境，确保辅助决策的可行性和经济性。

公开(公告)号：US08710753B2

公开(公告)日：2014-04-29

申请号：US13314103

申请日：2011-12-07

申请人： Minjong Kim ,  Enzhu Liang ,  Xuecheng Jin

发明人： Minjong Kim ,  Enzhu Liang ,  Xuecheng Jin

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0824 ,  H05B37/02

摘要： An LED driver controls current through an LED string. The LED driver generates a boosted PWM signal to drive a PWM transistor in the LED current path such that the PWM transistor maintains a substantially constant VGS, thus minimizing turn-on impedance of the PWM transistor. A current mirror circuit controls peak LED current when the PWM transistor is on. A trimming circuit includes a set of programmable switches to couple or decouple trimming transistor from the LED current path, and allowing for fine calibration of the LED current. By maintaining a low resistance and compensating for current mismatch in the LED current path, the LED driver provides efficient power performance and robustness that is particularly beneficial in high current applications.

摘要翻译： LED驱动器通过LED灯串控制电流。 LED驱动器产生升高的PWM信号以驱动LED电流路径中的PWM晶体管，使得PWM晶体管保持基本上恒定的VGS，从而最小化PWM晶体管的导通阻抗。 当PWM晶体管导通时，电流镜电路控制峰值LED电流。 修整电路包括一组可编程开关，用于将修整晶体管与LED电流路径耦合或去耦，并允许精确校准LED电流。 通过保持低电阻并补偿LED电流路径中的电流失配，LED驱动器提供了有效的功率性能和鲁棒性，这在大电流应用中特别有益。

公开(公告)号：US08184762B2

公开(公告)日：2012-05-22

申请号：US12266383

申请日：2008-11-06

申请人： John W. Kesterson ,  Carrie Seim ,  Selcuk Sen ,  Xuecheng Jin

发明人： John W. Kesterson ,  Carrie Seim ,  Selcuk Sen ,  Xuecheng Jin

IPC分类号： H03D3/24 ,  H03L7/00 ,  H03L7/06

CPC分类号： H03L7/07 ,  H03L7/081 ,  H03L7/085 ,  H03L7/0994 ,  H03L2207/50

摘要： A digital phase lock loop circuit provides an output with reduced jitter. The digital phase lock loop circuit includes a phase frequency detector that determines a phase difference between a feedback signal and a reference frequency signal to generate an error signal indicative of the phase difference. A numerically controlled oscillator generates a first oscillator output signal with a frequency proportional to the error signal and a second oscillator output signal indicative of jitter of the first oscillator output signal in reference to the reference frequency signal. A phase accuracy extender determines a delay amount from the second oscillator output signal and delays the first oscillator output signal by the delay amount to generate a phase-enhanced output signal with edges aligned with one of a plurality of reference clock signals.

摘要翻译： 数字锁相环电路提供具有减少的抖动的输出。 数字锁相环电路包括相位频率检测器，其确定反馈信号和参考频率信号之间的相位差，以产生指示相位差的误差信号。 数控振荡器产生与误差信号成比例的频率的第一振荡器输出信号和指示参考频率信号的第一振荡器输出信号的抖动的第二振荡器输出信号。 相位精度延长器确定来自第二振荡器输出信号的延迟量，并将第一振荡器输出信号延迟延迟量，以产生具有与多个参考时钟信号之一对准的相位增强输出信号。

公开(公告)号：US09224340B2

公开(公告)日：2015-12-29

申请号：US13479071

申请日：2012-05-23

申请人： Xuecheng Jin

发明人： Xuecheng Jin

IPC分类号： G09G5/00 ,  G09G3/34 ,  H02M1/14 ,  H02M3/07 ,  H02J7/00

CPC分类号： G09G3/3406 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2360/16 ,  H02J7/00 ,  H02M1/14 ,  H02M3/07

摘要： A Predictive Power Control (PPC) device within a TCON Bias IC that addresses an overdesign inefficiency and enables a low cost solution. A PPC block utilizes the next frame image data and interacts with a pulse width modulation (PWM) control block of internal regulators to proactively prepare the output voltages of a power regulator for the power requirements in one or more future frames, for example.

摘要翻译： TCON偏置IC内的预测功率控制（PPC）器件，可以满足设计效率不高的需求，并实现低成本解决方案。 PPC块利用下一帧图像数据并与内部调节器的脉冲宽度调制（PWM）控制块进行交互，以主动准备功率调节器的输出电压，用于例如一个或多个未来帧中的功率需求。

公开(公告)号：US08791647B2

公开(公告)日：2014-07-29

申请号：US13339196

申请日：2011-12-28

申请人： John William Kesterson ,  Xiaoyan Wang ,  Xuecheng Jin ,  Enzhu Liang ,  Selcuk Sen

发明人： John William Kesterson ,  Xiaoyan Wang ,  Xuecheng Jin ,  Enzhu Liang ,  Selcuk Sen

IPC分类号： G05F1/00

CPC分类号： H05B33/0815 ,  Y02B20/346

摘要： A system controls a switching power converter to power LED strings using a predictive feedforward control mechanism. An LED controller determines programmed current levels and duty cycles for driving LED strings. The LED controller determines a predicted load for a subsequent cycle of a switching power converter driving the LED strings based on the programmed current levels and duty cycles. A power conversion controller uses the predicted load information to control switching of the switching power converter. This improves the dynamic response of the switching converter to changing load conditions, thereby improving overall power efficiency and performance of the system.

摘要翻译： 系统使用预测前馈控制机制控制开关功率转换器为LED串供电。 LED控制器确定用于驱动LED串的编程电流电平和占空比。 LED控制器基于编程的电流电平和占空比确定驱动LED串的开关功率转换器的后续周期的预测负载。 电力转换控制器使用预测负载信息来控制开关功率转换器的开关。 这改善了开关转换器对变化的负载条件的动态响应，从而提高了系统的整体功率效率和性能。

公开(公告)号：US20130314391A1

公开(公告)日：2013-11-28

申请号：US13479071

申请日：2012-05-23

申请人： Xuecheng Jin

发明人： Xuecheng Jin

IPC分类号： G09G5/00 ,  G09G3/36

CPC分类号： G09G3/3406 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2360/16 ,  H02J7/00 ,  H02M1/14 ,  H02M3/07

摘要： A Predictive Power Control (PPC) device within a TCON Bias IC that addresses an overdesign inefficiency and enables a low cost solution. A PPC block utilizes the next frame image data and interacts with a pulse width modulation (PWM) control block of internal regulators to proactively prepare the output voltages of a power regulator for the power requirements in one or more future frames, for example.

摘要翻译： TCON偏置IC内的预测功率控制（PPC）器件，可以满足设计效率不高的需求，并实现低成本解决方案。 PPC块利用下一帧图像数据并与内部调节器的脉冲宽度调制（PWM）控制块进行交互，以主动准备功率调节器的输出电压，用于例如一个或多个未来帧中的功率需求。

公开(公告)号：US20120223648A1

公开(公告)日：2012-09-06

申请号：US13040229

申请日：2011-03-03

申请人： Xuecheng Jin ,  Minjong Kim ,  Enzhu Liang ,  John William Kesterson ,  Xiaoyan Wang

发明人： Xuecheng Jin ,  Minjong Kim ,  Enzhu Liang ,  John William Kesterson ,  Xiaoyan Wang

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  H05B33/0851

摘要： A system that provides an intelligent approach to driving multiple strings of LEDs. A processing device determines an optimal current level for each LED string from a limited set of allowed currents. The processing device also determines a PWM duty cycle for driving the LEDs in each LED string to provide precise brightness control over the LED string. The settings for the current level and duty cycle are transmitted to an LED driver for regulating the current and on-off times of the LED strings. Beneficially, the system reduces the size of the LED driver while leveraging existing resources available in the processing device to operate the LEDs in a power efficient manner.

摘要翻译： 提供智能方法来驱动多串LED的系统。 处理装置从有限的允许电流集合确定每个LED串的最佳电流电平。 处理装置还确定用于驱动每个LED串中的LED的PWM占空比，以提供对LED串的精确亮度控制。 当前电平和占空比的设置被传送到LED驱动器，用于调节LED串的电流和开关时间。 有利的是，该系统在利用处理装置中可利用的现有资源以功率有效的方式来操作LED的同时减小了LED驱动器的尺寸。

公开(公告)号：US08710752B2

公开(公告)日：2014-04-29

申请号：US13040229

申请日：2011-03-03

申请人： Xuecheng Jin ,  Minjong Kim ,  Enzhu Liang ,  John William Kesterson ,  Xiaoyan Wang

发明人： Xuecheng Jin ,  Minjong Kim ,  Enzhu Liang ,  John William Kesterson ,  Xiaoyan Wang

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0827 ,  H05B33/0851

摘要： A system that provides an intelligent approach to driving multiple strings of LEDs. A processing device determines an optimal current level for each LED string from a limited set of allowed currents. The processing device also determines a PWM duty cycle for driving the LEDs in each LED string to provide precise brightness control over the LED string. The settings for the current level and duty cycle are transmitted to an LED driver for regulating the current and on-off times of the LED strings. Beneficially, the system reduces the size of the LED driver while leveraging existing resources available in the processing device to operate the LEDs in a power efficient manner.

摘要翻译： 提供智能方法来驱动多串LED的系统。 处理装置从有限的允许电流集合确定每个LED串的最佳电流电平。 处理装置还确定用于驱动每个LED串中的LED的PWM占空比，以提供对LED串的精确亮度控制。 当前电平和占空比的设置被传送到LED驱动器，用于调节LED串的电流和开关时间。 有利的是，该系统在利用处理装置中可利用的现有资源以功率有效的方式来操作LED的同时减小了LED驱动器的尺寸。

公开(公告)号：US20100207655A1

公开(公告)日：2010-08-19

申请号：US12772803

申请日：2010-05-03

申请人： Xuecheng Jin ,  Andrey B. Malinin ,  John W. Kesterson

发明人： Xuecheng Jin ,  Andrey B. Malinin ,  John W. Kesterson

IPC分类号： G01R31/26

CPC分类号： G06F17/5045 ,  G06F2217/78

摘要： A method and system of system-on-chip design that provides the benefits of reduced design time, a smaller die size, lower power consumption, and reduced costs in chip design and production. The process seeks to remove the worst performance and worst power case scenarios from the design and application phases. This is accomplished by planning the power supply voltage in the design phase along with its tolerance with process corner and temperature combinations. The established plan is then applied with communications between power supply integrated circuits and load system-on-chip.

摘要翻译： 系统级芯片设计的方法和系统提供减少设计时间，更小的芯片尺寸，更低的功耗以及降低芯片设计和生产成本的优势。 该过程旨在从设计和应用阶段中消除最差的性能和最坏的功耗情况。 这是通过在设计阶段规划电源电压以及其与过程角和温度组合的公差来实现的。 然后将已建立的计划应用于电源集成电路和负载片上系统之间的通信。