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公开(公告)号：US20060158365A1
公开(公告)日：2006-07-20
申请号：US11316636
申请日：2005-12-21
申请人： Kent Kernahan , Xuecheng Jin , Ping Lo , Ion Opris , Sorin Spanoche
发明人： Kent Kernahan , Xuecheng Jin , Ping Lo , Ion Opris , Sorin Spanoche
IPC分类号： H03M1/12
CPC分类号： H03M1/38
摘要： Methods and devices are disclosed for performing analog to digital signal conversion in shorter time and/or with less power consumption than that of a comparable analog to digital conversion that uses a conventional sequential approximation method based on a binary search. In one embodiment, a predictive guess is supplied as a digital first signal. The digital first signal is converted (D/A) to a counterpart, analog guess signal. A comparison is made between the analog guess signal and a received, analog input sample signal. The result of the comparison is used to improve on the initially supplied guess in a next cycle. Fewer cycles and less power is consumed if the initial guess is within a certain range of the actual magnitude of the analog input sample signal. In one embodiment, a digital modeler is used to model a process underlying the analog input sample signal and to thereby provide fairly good guesses.
摘要翻译： 公开了用于在较短时间内和/或具有比使用基于二进制搜索的常规顺序近似方法的可比较模数转换的功耗更少的时间和/或执行模数转换的方法和装置。 在一个实施例中，预测猜测被提供为数字第一信号。 数字第一信号被转换（D / A）到对应的模拟猜测信号。 比较模拟猜测信号和接收的模拟输入采样信号。 比较结果用于在下一个周期中提高初始提供的猜测。 如果初始猜测在模拟输入采样信号的实际幅度的一定范围内，则消耗更少的周期和更少的功率。 在一个实施例中，数字建模器用于对模拟输入采样信号的过程进行建模，从而提供相当好的猜测。
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公开(公告)号：US07609185B2
公开(公告)日：2009-10-27
申请号：US12143708
申请日：2008-06-20
申请人： Kent Kernahan , Xuecheng Jin , Ping Lo , Ion E. Opris , Sorin Andrei Spanoche
发明人： Kent Kernahan , Xuecheng Jin , Ping Lo , Ion E. Opris , Sorin Andrei Spanoche
IPC分类号： H03M1/10
CPC分类号： H03M1/38
摘要： Methods are disclosed for performing analog to digital signal conversion in shorter time and/or with less power consumption. A predictive guess is supplied as a digital first signal. The digital first signal is converted (D/A) to a counterpart, analog guess signal. A comparison is made between the analog guess signal and a received, analog input sample signal. The result of the comparison is used to improve on the initially supplied guess in a next cycle. Fewer cycles and less power is consumed if the initial guess is within a certain range of the actual magnitude of the analog input sample signal.
摘要翻译： 公开了用于在较短时间内和/或具有较少功耗的模拟信号转换中执行的方法。 预测猜测作为数字第一信号提供。 数字第一信号被转换（D / A）到对应的模拟猜测信号。 比较模拟猜测信号和接收的模拟输入采样信号。 比较结果用于在下一个周期中提高初始提供的猜测。 如果初始猜测在模拟输入采样信号的实际幅度的一定范围内，则消耗更少的周期和更少的功率。
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公开(公告)号：US07405689B2
公开(公告)日：2008-07-29
申请号：US11316636
申请日：2005-12-21
申请人： Kent Kernahan , Xuecheng Jin , Ping Lo , Ion E. Opris , Sorin Andrei Spanoche
发明人： Kent Kernahan , Xuecheng Jin , Ping Lo , Ion E. Opris , Sorin Andrei Spanoche
IPC分类号： H03M1/12
CPC分类号： H03M1/38
摘要： Methods and devices perform analog to digital signal conversion in shorter time and/or with less power consumption than that of a comparable analog to digital conversion that uses a conventional sequential approximation method based on a binary search. A predictive guess is supplied as a digital first signal. The digital first signal is converted (D/A) to a counterpart, analog guess signal. Fewer cycles and less power is consumed if the initial guess is within a certain range of the actual magnitude of the analog input sample signal. In one embodiment, a digital modeler is used to model a process underlying the analog input sample signal to thereby provide fairly good guesses.
摘要翻译： 方法和设备在较短的时间内和/或具有比使用基于二进制搜索的常规顺序近似方法的可比较模数转换的功耗更少的时间和/或执行模数转换。 预测猜测作为数字第一信号提供。 数字第一信号被转换（D / A）到对应的模拟猜测信号。 如果初始猜测在模拟输入采样信号的实际幅度的一定范围内，则消耗更少的周期和更少的功率。 在一个实施例中，数字建模器用于对模拟输入采样信号的过程进行建模，从而提供相当好的猜测。
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公开(公告)号：US07336058B1
公开(公告)日：2008-02-26
申请号：US11671793
申请日：2007-02-06
申请人： Ping Lo , Xuecheng Jin
发明人： Ping Lo , Xuecheng Jin
IPC分类号： G05F1/40
CPC分类号： G05F1/575
摘要： A low dropout (LDO) voltage regulator having more than one LDO modules, each LDO module having a frequency response adapted to a certain range of output frequency. The LDO voltage regulator can provide a gain over a broad range of operating frequency by combining output current from each LDO module and providing the combined current at an output of the LDO voltage regulator. The LDO voltage regulator further comprises a load monitor coupled to the LDO modules for disabling some of the LDO modules to reduce power consumption of the LDO voltage regulator.
摘要翻译： 具有多于一个LDO模块的低压降（LDO）稳压器，每个LDO模块具有适应于一定范围的输出频率的频率响应。 LDO稳压器可以通过组合来自每个LDO模块的输出电流并在LDO稳压器的输出端提供组合电流，在宽范围的工作频率范围内提供增益。 LDO稳压器还包括耦合到LDO模块的负载监视器，用于禁用一些LDO模块以降低LDO电压调节器的功耗。
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公开(公告)号：US07474130B1
公开(公告)日：2009-01-06
申请号：US11671810
申请日：2007-02-06
申请人： Ping Lo , Xuecheng Jin
发明人： Ping Lo , Xuecheng Jin
摘要： A voltage-to-current converter providing an output current with compensation for process-voltage-temperature (PVT) variations of a component in the voltage-to-current converter. The voltage-to-current converter includes a first voltage-to-current converter branch, a second voltage-to-current converter branch, and a compensation current path. The first voltage-to-current converter provides a first current to the output of the voltage-to-current converter based on a variable control voltage. The second voltage-to-current converter branch provides a second current based on a fixed voltage. The compensation current path provides a compensation current from the second voltage-to-current branch to the first voltage-to-current converter branch compensating variations in the first current caused by the PVT variations of the component in the first voltage-to-current converter branch.
摘要翻译： 电压 - 电流转换器提供输出电流，补偿电压 - 电流转换器中部件的过程电压 - 温度（PVT）变化。 电压 - 电流转换器包括第一电压 - 电流转换器分支，第二电压 - 电流转换器分支和补偿电流路径。 第一电压 - 电流转换器基于可变控制电压向电压 - 电流转换器的输出提供第一电流。 第二电压 - 电流转换器分支提供基于固定电压的第二电流。 补偿电流路径提供从第二电压 - 电流分支到第一电压 - 电流转换器分支的补偿电流，补偿由第一电压 - 电流转换器中的组件的PVT变化引起的第一电流的变化 科。
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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。
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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
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。
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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
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。
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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。
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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
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。
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