专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08441199B2 Method and apparatus for an intelligent light emitting diode driver having power factor correction capability 有权
标题翻译：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。

2. 发明授权

US08217887B2 System and method for backlight control for an electronic display 有权
标题翻译：用于电子显示器的背光控制系统和方法
公开(公告)号：US08217887B2
公开(公告)日：2012-07-10
申请号：US12018399
申请日：2008-01-23
申请人： Dilip Sangam , Hendrik Santo , Tushar Dhayagude , Klen Vi , Sean Chen
发明人： Dilip Sangam , Hendrik Santo , Tushar Dhayagude , Klen Vi , Sean Chen
IPC分类号： G09G3/36
CPC分类号： G09G3/3426 , G09G3/3413 , G09G2310/0237 , G09G2310/024 , G09G2320/0633 , G09G2320/0666 , G09G2360/144
摘要： The present invention discloses apparatus and techniques relating to the intelligent control of a display's backlight LED strings. The present invention provides for controlling the display intensity on a region-by-region basis and for adjusting the intensity multiple times within the duration of a frame. The present invention also provides backlight adjustment in a manner that emphasizes certain colors and deemphasizes certain colors. The present invention also provides for adjustment of the backlight based on the ambient temperature.
摘要翻译：本发明公开了与显示器的背光LED串的智能控制相关的装置和技术。本发明提供了在逐帧的基础上控制显示强度并且在帧的持续时间内多次调整强度。本发明还以强调某些颜色并且强调某些颜色的方式提供背光调整。本发明还提供了基于环境温度来调节背光。

3. 发明授权

US08314572B2 Apparatus and methodology for enhancing efficiency of a power distribution system having power factor correction capability by using a self-calibrating controller 有权
标题翻译：通过使用自校准控制器来提高具有功率因数校正能力的配电系统的效率的装置和方法
公开(公告)号：US08314572B2
公开(公告)日：2012-11-20
申请号：US12409088
申请日：2009-03-23
申请人： Matthew Schindler , Tushar Dhayagude , Hendrik Santo , Dilip Sangam
发明人： Matthew Schindler , Tushar Dhayagude , Hendrik Santo , Dilip Sangam
IPC分类号： H05B37/02
CPC分类号： G09G3/342
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。

4. 发明授权

US08476965B2 Method and circuit for an operating area limiter 有权
标题翻译：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。

5. 发明授权

US08536933B2 Method and circuit for an operating area limiter 有权
公开(公告)号：US08536933B2
公开(公告)日：2013-09-17
申请号：US13426322
申请日：2012-03-21
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.

6. 发明授权

US08373364B2 Smart monitoring of light emitting diode strings 有权
标题翻译：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。

7. 发明申请

US20130193859A1 Apparatus, Circuit and Method for Automatic Phase-Shifting Pulse Width Modulated Signal Generation 有权
标题翻译：用于自动移相脉宽调制信号生成的装置，电路和方法
公开(公告)号：US20130193859A1
公开(公告)日：2013-08-01
申请号：US13724649
申请日：2012-12-21
申请人： Zhiyu Yang , Dilip Sangam , Tushar Dhayagude
发明人： Zhiyu Yang , Dilip Sangam , Tushar Dhayagude
IPC分类号： H05B33/08 , H03K3/012
CPC分类号： H05B33/0809 , H03K3/012 , H03K7/08 , H05B33/0842
摘要： Systems, circuits and methods for phase-shifting pulse width modulated signal generation are disclosed. In some embodiments, a phase-shifting pulse width modulation circuit is configured to output pulses based on an input pulse width modulated signal. The pulses are staggered relative to one another, and can be received by a light-emitting diode driver for driving a light-emitting diode string at one or more time periods. The phase-shifting pulse width modulation circuit can include a counter-based programmable delay subcircuit consisting of two counter-based programmable delay blocks.
摘要翻译：公开了用于相移脉宽调制信号产生的系统，电路和方法。在一些实施例中，移相脉宽调制电路被配置为基于输入脉宽调制信号输出脉冲。脉冲相对于彼此交错，并且可以由用于在一个或多个时间段驱动发光二极管串的发光二极管驱动器接收。相移脉宽调制电路可以包括由两个基于计数器的可编程延迟块组成的基于计数器的可编程延迟子电路。

8. 发明授权

US08378961B2 Control of light-emitting-diode backlight illumination through frame insertion 有权
标题翻译：通过框架插入控制发光二极管背光照明
公开(公告)号：US08378961B2
公开(公告)日：2013-02-19
申请号：US12688742
申请日：2010-01-15
申请人： Dilip Sangam , Balaji Venugopal Virajpet , Tushar Dhayagude
发明人： Dilip Sangam , Balaji Venugopal Virajpet , Tushar Dhayagude
IPC分类号： G09G3/36
CPC分类号： G09G3/3406 , G09G3/2022 , G09G3/342 , G09G3/3426 , G09G2310/0237 , G09G2310/061 , G09G2320/0247 , G09G2320/0261 , G09G2320/062 , G09G2320/064 , H05B33/086
摘要： System(s) and method(s) are provided to regulate backlighting in a light emitting diode (LED)-based display through a sequence of alternate pulse-width-modulation (PWM) frame or sub-frame insertions. Alternate PWM frames or sub-frames can be black or non-black. A plurality of pixels in the display is partitioned into at least one zone including one or more rows of pixels; the at least one zone determines sub-frame period based on refresh frequency of the display. A sequence of alternate PWM sub-frames includes at least one alternate sub-frame and at least one normal sub-frame. Alternate PWM frames or alternate PWM sub-frames include a phase delay during which a backlight unit is turned off, and a PWM sequence in which the backlight unit is turned on with a finite duty cycle for the remainder of the PWM frame or sub-frame. A sequence of alternate PWM sub-frames can be configured internally or externally. Internal configuration can be synchronous with a reference signal whereas external configuration relies on external reference signal.
摘要翻译：提供系统和方法以通过一系列交替的脉冲宽度调制（PWM）帧或子帧插入来调节基于发光二极管（LED）的显示器中的背光。备用的PWM帧或子帧可以是黑色或非黑色。显示器中的多个像素被分割成包括一行或多行像素的至少一个区域; 所述至少一个区域基于显示器的刷新频率确定子帧周期。交替PWM子帧的序列包括至少一个备用子帧和至少一个正常子帧。替代的PWM帧或交替的PWM子帧包括在其中关闭背光单元的相位延迟以及其中背光单元以PWM帧或子帧的其余部分的有限占空比导通的PWM序列。可以在内部或外部配置一系列备用PWM子帧。内部配置可以与参考信号同步，而外部配置依赖于外部参考信号。

9. 发明授权

US08547323B2 Control of light-emitting-diode backlight illumination through frame insertion 有权
标题翻译：通过框架插入控制发光二极管背光照明
公开(公告)号：US08547323B2
公开(公告)日：2013-10-01
申请号：US13429277
申请日：2012-03-23
申请人： Dilip Sangam , Balaji Venugopal Virajpet , Tushar Dhayagude
发明人： Dilip Sangam , Balaji Venugopal Virajpet , Tushar Dhayagude
IPC分类号： G09G3/36
CPC分类号： G09G3/3406 , G09G3/2022 , G09G3/342 , G09G3/3426 , G09G2310/0237 , G09G2310/061 , G09G2320/0247 , G09G2320/0261 , G09G2320/062 , G09G2320/064 , H05B33/086
摘要： System(s) and methode s) are provided to regulate backlighting in a light emitting diode (LED)-based display through a sequence of alternate pulse-width-modulation (PWM) frame or sub-frame insertions. Alternate PWM frames or sub-frames can be black or non-black. A plurality of pixels in the display is partitioned into at least one zone including one or more rows of pixels; the at least one zone determines sub-frame period based on refresh frequency of the display. A sequence of alternate PWM sub-frames includes at least one alternate sub-frame and at least one normal sub-frame. Alternate PWM frames or alternate PWM sub-frames include a phase delay during which a backlight unit is turned off, and a PWM sequence in which the backlight unit is turned on with a finite duty cycle for the remainder of the PWM frame or sub-frame.
摘要翻译：提供系统和方法以通过一系列交替的脉冲宽度调制（PWM）帧或子帧插入来调节基于发光二极管（LED）的显示器中的背光。备用的PWM帧或子帧可以是黑色或非黑色。显示器中的多个像素被分割成包括一行或多行像素的至少一个区域; 所述至少一个区域基于显示器的刷新频率确定子帧周期。交替PWM子帧的序列包括至少一个备用子帧和至少一个正常子帧。替代的PWM帧或交替的PWM子帧包括在其中关闭背光单元的相位延迟以及其中背光单元以PWM帧或子帧的其余部分的有限占空比导通的PWM序列。

10. 发明申请

US20120306944A1 CONTROL OF LIGHT-EMITTING-DIODE BACKLIGHT ILLUMINATION THROUGH FRAME INSERTION 有权
标题翻译：通过框架插入控制发光二极管背光照明
公开(公告)号：US20120306944A1
公开(公告)日：2012-12-06
申请号：US13429277
申请日：2012-03-23
申请人： Dilip Sangam , Balaji Venugopal Virajpet , Tushar Dhayagude
发明人： Dilip Sangam , Balaji Venugopal Virajpet , Tushar Dhayagude
IPC分类号： G09G5/10
CPC分类号： G09G3/3406 , G09G3/2022 , G09G3/342 , G09G3/3426 , G09G2310/0237 , G09G2310/061 , G09G2320/0247 , G09G2320/0261 , G09G2320/062 , G09G2320/064 , H05B33/086
摘要： System(s) and methode s) are provided to regulate backlighting in a light emitting diode (LED)-based display through a sequence of alternate pulse-width-modulation (PWM) frame or sub-frame insertions. Alternate PWM frames or sub-frames can be black or non-black. A plurality of pixels in the display is partitioned into at least one zone including one or more rows of pixels; the at least one zone determines sub-frame period based on refresh frequency of the display. A sequence of alternate PWM sub-frames includes at least one alternate sub-frame and at least one normal sub-frame. Alternate PWM frames or alternate PWM sub-frames include a phase delay during which a backlight unit is turned off, and a PWM sequence in which the backlight unit is turned on with a finite duty cycle for the remainder of the PWM frame or sub-frame.
摘要翻译：提供系统和方法以通过一系列交替的脉冲宽度调制（PWM）帧或子帧插入来调节基于发光二极管（LED）的显示器中的背光。备用的PWM帧或子帧可以是黑色或非黑色。显示器中的多个像素被分割成包括一行或多行像素的至少一个区域; 所述至少一个区域基于显示器的刷新频率确定子帧周期。交替PWM子帧的序列包括至少一个备用子帧和至少一个正常子帧。替代的PWM帧或交替的PWM子帧包括在其中关闭背光单元的相位延迟以及其中背光单元以PWM帧或子帧的其余部分的有限占空比导通的PWM序列。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式