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    Smart monitoring of light emitting diode strings
    1.
    发明授权
    Smart monitoring of light emitting diode strings 有权
    智能监控发光二极管串

    公开(公告)号：US08373364B2

    公开(公告)日：2013-02-12

    申请号：US12648610

    申请日：2009-12-29

    申请人： Hendrik Santo ,  Dilip Sangam ,  Timothy James Herklots ,  Kien Vi ,  Ronald William Young ,  Matthew D. Schindler

    发明人： Hendrik Santo ,  Dilip Sangam ,  Timothy James Herklots ,  Kien Vi ,  Ronald William Young ,  Matthew D. Schindler

    IPC分类号： H05B37/02

    CPC分类号： G01R31/2635

    摘要： System(s) and method(s) are provide to efficiently assess performance of a set of light emitting diode (LED) strings in an illumination system. A multiplexer component collects input signal from the one or more LED strings via a first set of one or more monitoring pins, processes the collected input signal, and extracts at least one output signal. The at least one output signal is conveyed to a demultiplexer component through a second set of one or more monitoring pins, wherein the number of elements in the second set of monitoring pins is equal to or smaller than the number of monitoring pins in the first set. The collected input signal is processed in accordance with at least one mode of operation of the multiplexer component, the mode of operation autonomously configured by the demultiplexer component. The multiplexer component can autonomously generate intelligence on operating status of the set of LED strings.

    摘要翻译： 提供系统和方法以有效地评估照明系统中的一组发光二极管（LED）串的性能。 复用器部件经由第一组一个或多个监视引脚从一个或多个LED串收集输入信号，处理所收集的输入信号，并提取至少一个输出信号。 所述至少一个输出信号经由第二组一个或多个监视引脚传送到解复用器组件，其中第二组监视引脚中的元件数量等于或小于第一组中监视引脚的数量 。 所收集的输入信号根据复用器组件的至少一种操作模式进行处理，即由解复用器组件自主配置的操作模式。 多路复用器组件可以自主地生成关于该组LED串的操作状态的智能。

    SMART MONITORING OF LIGHT EMITTING DIODE STRINGS
    2.
    发明申请
    SMART MONITORING OF LIGHT EMITTING DIODE STRINGS 有权
    智能监测发光二极管

    公开(公告)号：US20110156600A1

    公开(公告)日：2011-06-30

    申请号：US12648610

    申请日：2009-12-29

    申请人： Hendrik Santo ,  Dilip S ,  Timothy James Herklots ,  Kien Vi ,  Ronald William Young ,  Matthew D. Schindler

    发明人： Hendrik Santo ,  Dilip S ,  Timothy James Herklots ,  Kien Vi ,  Ronald William Young ,  Matthew D. Schindler

    IPC分类号： H05B37/00 ,  G01R31/00

    CPC分类号： G01R31/2635

    摘要： System(s) and method(s) are provide to efficiently assess performance of a set of light emitting diode (LED) strings in an illumination system. A multiplexer component collects input signal from the one or more LED strings via a first set of one or more monitoring pins, processes the collected input signal, and extracts at least one output signal. The at least one output signal is conveyed to a demultiplexer component through a second set of one or more monitoring pins, wherein the number of elements in the second set of monitoring pins is equal to or smaller than the number of monitoring pins in the first set. The collected input signal is processed in accordance with at least one mode of operation of the multiplexer component, the mode of operation autonomously configured by the demultiplexer component. The multiplexer component can autonomously generate intelligence on operating status of the set of LED strings.

    摘要翻译： 提供系统和方法以有效地评估照明系统中的一组发光二极管（LED）串的性能。 复用器部件经由第一组一个或多个监视引脚从一个或多个LED串收集输入信号，处理所收集的输入信号，并提取至少一个输出信号。 所述至少一个输出信号经由第二组一个或多个监视引脚传送到解复用器组件，其中第二组监视引脚中的元件数量等于或小于第一组中监视引脚的数量 。 所收集的输入信号根据复用器组件的至少一种操作模式进行处理，即由解复用器组件自主配置的操作模式。 多路复用器组件可以自主地生成关于该组LED串的操作状态的智能。

    Method and circuit for an operating area limiter
    3.
    发明授权
    Method and circuit for an operating area limiter 有权
    操作区域限制器的方法和电路

    公开(公告)号：US08476965B2

    公开(公告)日：2013-07-02

    申请号：US12045588

    申请日：2008-03-10

    申请人： Hendrik Santo ,  Dilip Sangam ,  Kien Vi ,  Ranajit Ghoman ,  Matthew D. Schindler

    发明人： Hendrik Santo ,  Dilip Sangam ,  Kien Vi ,  Ranajit Ghoman ,  Matthew D. Schindler

    IPC分类号： G05F1/10 ,  G05F3/02

    CPC分类号： G05F1/561

    摘要： The present invention relates to circuits and methods for limiting the operating area of a transistor in a constant current source. The circuits and methods use a detector and a driver to limit the operating area of a transistor. The detector and driver have parameters selected so that, when the voltage at the drain of the transistor satisfies a reference condition, the driver causes drain current of the transistor to decrease. The reference condition is determined relative to the maximum safe drain-to-source voltage at the design drain current of the constant current source.

    摘要翻译： 本发明涉及用于限制恒流源中的晶体管的工作面积的电路和方法。 电路和方法使用检测器和驱动器来限制晶体管的工作面积。 检测器和驱动器具有选择的参数，使得当晶体管的漏极处的电压满足参考条件时，驱动器使晶体管的漏极电流减小。 参考条件是相对于恒流源设计漏极电流的最大安全漏极 - 源极电压来确定的。

    Architecture and technique for inter-chip communication
    5.
    发明授权
    Architecture and technique for inter-chip communication 有权

    公开(公告)号：US08493300B2

    公开(公告)日：2013-07-23

    申请号：US12046280

    申请日：2008-03-11

    申请人： Hendrik Santo ,  Ranajit Ghoman ,  Dilip Sangam ,  Kien Vi

    发明人： Hendrik Santo ,  Ranajit Ghoman ,  Dilip Sangam ,  Kien Vi

    IPC分类号： G09G3/36

    CPC分类号： H05B33/0842

    摘要： The present invention involves an electrical system in which an analog signal channel passes through various integrated circuit chips (ICs). The channel can carry one or more analog signals. Each IC can modify the signal(s) passing through it and pass it on to another IC or system component. The channel can be programmable. Each IC can include a comparator or a multiplexor to receive the channel signal from another IC or system component and to modify the received signal before transmitting it to another IC or system component. The comparator or the multiplexor can be programmable and can be selectively configured to compare the incoming signal from the channel with a variety of other signals and thresholds, or to simply act as a flow through gate and allow the signal to pass without any modification. The comparison can determine the output of the comparator. The operation and programming of the comparators, the multiplexors and the channel can be centrally controlled by a system controller, can be independently controlled by the ICs, or a combination thereof.

    Hybrid analog and digital architecture for controlling backlight light emitting diodes of an electronic display
    7.
    发明授权
    Hybrid analog and digital architecture for controlling backlight light emitting diodes of an electronic display 有权
    用于控制电子显示器的背光发光二极管的混合模拟和数字架构

    公开(公告)号：US08049708B2

    公开(公告)日：2011-11-01

    申请号：US11652739

    申请日：2007-01-12

    申请人： Hendrik Santo ,  Dilip Sangam ,  Gurjit Thandi ,  Kien Vi

    发明人： Hendrik Santo ,  Dilip Sangam ,  Gurjit Thandi ,  Kien Vi

    IPC分类号： G09G3/36

    CPC分类号： H05B33/0827 ,  G09G3/3406 ,  G09G3/342 ,  G09G2320/0626

    摘要： The present invention provides a controller for controlling strings of LEDs in a liquid crystal display. The hybrid controller uses both analog and digital circuit components. Error amplifiers are used to compare analog feedback signals received from the LED strings with reference signals. The results of those comparisons are converted to digital data and processed by a digital signal processor (DSP). The DSP calculates the drive voltages for the LED strings based on the deviation between the actual current flows (represented by feedback signals) and the desired current flows (represented by reference signals) through the LED strings. Analog drivers provide the drive voltages to the LED strings.

    摘要翻译： 本发明提供一种用于控制液晶显示器中的LED串的控制器。 混合控制器使用模拟和数字电路组件。 误差放大器用于将从LED串接收的模拟反馈信号与参考信号进行比较。 这些比较的结果被转换成数字数据并由数字信号处理器（DSP）处理。 DSP根据通过LED串的实际电流（由反馈信号表示）与期望的电流（由参考信号表示）之间的偏差来计算LED串的驱动电压。 模拟驱动器为LED串提供驱动电压。

    Method and apparatus for an intelligent light emitting diode driver having power factor correction capability
    8.
    发明授权
    Method and apparatus for an intelligent light emitting diode driver having power factor correction capability 有权
    具有功率因数校正能力的智能发光二极管驱动器的方法和装置

    公开(公告)号：US08441199B2

    公开(公告)日：2013-05-14

    申请号：US12649057

    申请日：2009-12-29

    申请人： Hendrik Santo ,  Matthew D. Schindler ,  Dilip Sangam ,  Tushar Dhayagude

    发明人： Hendrik Santo ,  Matthew D. Schindler ,  Dilip Sangam ,  Tushar Dhayagude

    IPC分类号： H05B41/36

    CPC分类号： H05B33/0851 ,  G09G3/342 ,  H05B33/0842

    摘要： The present invention relates to circuits and methods for controlling one or more LED strings. The circuit comprises a programmable controller coupled to one or more detectors, wherein the one or more detectors are configured to detect one or more measurable parameters of one or more LEDs or LED drivers. The controller is configured to receive information from the one or more detectors related to the one or more measurable parameters and use that information to determine the desired drive voltage for the LED strings. The controller is associated with a power supply having power factor correction (PFC) capability. The controller provides the power supply with a control signal indicative of the desired drive voltage for one or more LED strings. The power supply also receives ac voltage and current waveforms as inputs and performs power factor correction and rectified waveforms related to the ac waveforms. The power supply generates the desired drive voltage based on the control signal.

    摘要翻译： 本发明涉及用于控制一个或多个LED串的电路和方法。 电路包括耦合到一个或多个检测器的可编程控制器，其中所述一个或多个检测器被配置为检测一个或多个LED或LED驱动器的一个或多个可测量的参数。 控制器被配置为从与一个或多个可测量参数相关的一个或多个检测器接收信息，并使用该信息来确定LED串所需的驱动电压。 控制器与具有功率因数校正（PFC）能力的电源相关联。 控制器为电源提供指示一个或多个LED串的期望驱动电压的控制信号。 电源还接收交流电压和电流波形作为输入，并进行与交流波形相关的功率因数校正和整流波形。 电源根据控制信号产生所需的驱动电压。

    METHOD AND CIRCUIT FOR AN OPERATING AREA LIMITER
    9.
    发明申请
    METHOD AND CIRCUIT FOR AN OPERATING AREA LIMITER 有权
    操作区域的方法和电路

    公开(公告)号：US20120176184A1

    公开(公告)日：2012-07-12

    申请号：US13426322

    申请日：2012-03-21

    申请人： Hendrik Santo ,  Dilip S ,  Kien Vi ,  Ranajit Ghoman ,  Matthew D. Schindler

    发明人： Hendrik Santo ,  Dilip S ,  Kien Vi ,  Ranajit Ghoman ,  Matthew D. Schindler

    IPC分类号： G05F1/10

    CPC分类号： G05F1/561

    摘要： The present invention relates to circuits and methods for limiting the operating area of a transistor in a constant current source. The circuits and methods use a detector and a driver to limit the operating area of a transistor. The detector and driver have parameters selected so that, when the voltage at the drain of the transistor satisfies a reference condition, the driver causes drain current of the transistor to decrease. The reference condition is determined relative to the maximum safe drain-to-source voltage at the design drain current of the constant current source.

    摘要翻译： 本发明涉及用于限制恒流源中的晶体管的工作面积的电路和方法。 电路和方法使用检测器和驱动器来限制晶体管的工作面积。 检测器和驱动器具有选择的参数，使得当晶体管的漏极处的电压满足参考条件时，驱动器使晶体管的漏极电流减小。 参考条件是相对于恒流源设计漏极电流的最大安全漏极 - 源极电压来确定的。

    METHOD AND CIRCUIT FOR AN OPERATING AREA LIMITER
    10.
    发明申请
    METHOD AND CIRCUIT FOR AN OPERATING AREA LIMITER 有权
    操作区域的方法和电路

    公开(公告)号：US20090224736A1

    公开(公告)日：2009-09-10

    申请号：US12045588

    申请日：2008-03-10

    申请人： Hendrik Santo ,  Dilip S. ,  Kien Vi ,  Ranajit Ghoman ,  Matthew D. Schindler

    发明人： Hendrik Santo ,  Dilip S. ,  Kien Vi ,  Ranajit Ghoman ,  Matthew D. Schindler

    IPC分类号： G05F1/10

    CPC分类号： G05F1/561

    摘要： The present invention relates to circuits and methods for limiting the operating area of a transistor in a constant current source. The circuits and methods use a detector and a driver to limit the operating area of a transistor. The detector and driver have parameters selected so that, when the voltage at the drain of the transistor satisfies a reference condition, the driver causes drain current of the transistor to decrease. The reference condition is determined relative to the maximum safe drain-to-source voltage at the design drain current of the constant current source.

    摘要翻译： 本发明涉及用于限制恒流源中的晶体管的工作面积的电路和方法。 电路和方法使用检测器和驱动器来限制晶体管的工作面积。 检测器和驱动器具有选择的参数，使得当晶体管的漏极处的电压满足参考条件时，驱动器使晶体管的漏极电流减小。 参考条件是相对于恒流源设计漏极电流的最大安全漏极 - 源极电压来确定的。