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    METHOD AND CIRCUIT FOR AN OPERATING AREA LIMITER
    1.
    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
    2.
    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。

    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。

    SMART MONITORING OF LIGHT EMITTING DIODE STRINGS
    5.
    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。

    Architecture and technique for inter-chip communication
    6.
    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.

    Smart monitoring of light emitting diode strings
    7.
    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。

    Method and circuit for an efficient and scalable constant current source for an electronic display
    8.
    发明授权
    Method and circuit for an efficient and scalable constant current source for an electronic display 有权
    用于电子显示器的高效且可扩展的恒流源的方法和电路

    公开(公告)号：US07598800B2

    公开(公告)日：2009-10-06

    申请号：US11805523

    申请日：2007-05-22

    申请人： Gurjit S. Thandi ,  Dilip S ,  Hendrik Santo ,  Kien Vi

    发明人： Gurjit S. Thandi ,  Dilip S ,  Hendrik Santo ,  Kien Vi

    IPC分类号： G05F1/10

    CPC分类号： G05F3/205

    摘要： The present invention uses two transistors instead of a sensing resistor to provide a constant current source for a load such as an array of light emitting diodes (“LEDs”). In the present invention, a bias current is applied to a branch of the circuit. The drain-to-source voltages of two transistors are matched. The voltage at the gate of both transistors is controlled based on the bias current and the drain-to-source current of the first of the two transistors. The second of the two transistors is sized such that source current of the second transistor is a multiple of the source current of the first transistor for a given gate voltage. By the techniques of this invention, the load current in a circuit is efficiently kept constant at a multiple of the input bias current.

    摘要翻译： 本发明使用两个晶体管代替感测电阻器来为诸如发光二极管阵列（“LED”）的负载提供恒定电流源。 在本发明中，偏置电流被施加到电路的支路。 两个晶体管的漏极 - 源极电压匹配。 基于两个晶体管中的第一个的偏置电流和漏极 - 源极电流来控制两个晶体管的栅极处的电压。 两个晶体管中的第二个的尺寸使得第二晶体管的源电流对于给定的栅极电压是第一晶体管的源极电流的倍数。 通过本发明的技术，电路中的负载电流被有效地保持恒定在输入偏置电流的倍数。

    Methods and circuits for triode region detection
    9.
    发明授权
    Methods and circuits for triode region detection 有权
    三极管区域检测方法与电路

    公开(公告)号：US08378957B2

    公开(公告)日：2013-02-19

    申请号：US12111114

    申请日：2008-04-28

    申请人： Hendrik Santo ,  Kien Vi ,  Dilip S

    发明人： Hendrik Santo ,  Kien Vi ,  Dilip S

    IPC分类号： G09G3/36

    CPC分类号： H03K17/18

    摘要： The present invention relates to circuits and methods for detecting transistor operation in the triode region including a circuit for a transistor in a constant current source. The circuit comprises a detector having a first input, a second input, and an output. The first input of the detector is coupled to the source of the transistor and the second input of the detector is coupled to the set point terminal of the constant current source. The circuit also comprises a flag coupled to the detector output. The detector has parameters selected so that, when the voltage at the source of the transistor satisfies a reference condition, the output of the detector sets the flag. The reference condition is established relative to the voltage at the set point terminal of the constant current source and relative to the triode transition voltage of the transistor at a selected drain-source current.

    摘要翻译： 本发明涉及用于检测三极管区域中的晶体管工作的电路和方法，包括恒流源中的晶体管的电路。 电路包括具有第一输入，第二输入和输出的检测器。 检测器的第一输入耦合到晶体管的源极，并且检测器的第二输入端耦合到恒流源的设定点端子。 电路还包括耦合到检测器输出的标志。 检测器具有选择的参数，使得当晶体管的源极处的电压满足参考条件时，检测器的输出设置标志。 相对于恒定电流源的设定点端子处的电压并且相对于所选择的漏极 - 源极电流下的晶体管的三极管转换电压，建立参考条件。