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1. 发明授权

US08279144B2 LED driver with frame-based dynamic power management 有权
标题翻译： LED驱动器采用基于帧的动态电源管理
公开(公告)号：US08279144B2
公开(公告)日：2012-10-02
申请号：US12183492
申请日：2008-07-31
申请人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
发明人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
IPC分类号： G09G3/32
CPC分类号： H05B33/0815 , H05B33/0827 , H05B33/086
摘要： Disclosed are example techniques for frame-based power management in a light emitting diode (LED) system having a plurality of LED strings. A voltage source provides an output voltage to drive the LED strings. An LED driver generates a frame timing reference representative of the frame rate or display timing of a series of image frames to be displayed via the LED system. An update reference is generated from the frame timing reference. The LED driver monitors one or more operating parameters of the LED system. In response to update triggers marked by the update reference, the LED driver adjusts the output voltage of the voltage source based on the status of each of the one or more monitored operating parameters (either from the previous update period or determined in response to the update trigger), thereby synchronizing the updating of the output voltage to the frame rate (or a virtual approximation of the frame rate) of the video being displayed.
摘要翻译：公开了具有多个LED串的发光二极管（LED）系统中用于基于帧的电源管理的示例技术。电压源提供输出电压来驱动LED串。 LED驱动器生成表示要通过LED系统显示的一系列图像帧的帧速率或显示定时的帧定时参考。从帧定时参考生成更新参考。 LED驱动器监视LED系统的一个或多个操作参数。响应于由更新参考标记的更新触发器，LED驱动器基于一个或多个监视的操作参数中的每一个的状态来调节电压源的输出电压（从先前的更新周期或响应于更新确定）触发），从而将输出电压的更新同步于正在显示的视频的帧速率（或帧速率的虚拟近似）。

2. 发明申请

US20100156315A1 LED DRIVER WITH FEEDBACK CALIBRATION 有权
标题翻译：带反馈校准的LED驱动器
公开(公告)号：US20100156315A1
公开(公告)日：2010-06-24
申请号：US12340985
申请日：2008-12-22
申请人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
发明人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
IPC分类号： H05B41/36
CPC分类号： H05B33/0818 , H05B33/0827 , H05B33/0851
摘要： Power management in a light emitting diode (LED) system having a plurality of LED strings is disclosed. A voltage source provides an output voltage to drive a plurality of LED strings. An LED driver implements a feedback mechanism to monitor the tail voltages of the active LED strings to identify the minimum tail voltage and adjust the output voltage of the voltage source based on the lowest tail voltage. A loop calibration module of the LED driver calibrates the feedback mechanism of the LED driver based on a relationship between a digital code value used to generate a particular output voltage and another digital code value generated based on the minimum tail voltage resulting from the particular output voltage.
摘要翻译：公开了具有多个LED串的发光二极管（LED）系统中的电源管理。电压源提供输出电压以驱动多个LED串。 LED驱动器实现反馈机制来监测有源LED串的尾部电压以识别最小尾电压，并且基于最低的尾部电压来调节电压源的输出电压。 LED驱动器的回路校准模块基于用于产生特定输出电压的数字代码值与基于由特定输出电压产生的最小尾部电压产生的另一数字代码值之间的关系来校准LED驱动器的反馈机制。

3. 发明申请

US20100026203A1 LED DRIVER WITH FRAME-BASED DYNAMIC POWER MANAGEMENT 有权
标题翻译： LED驱动器与基于动态功率管理的框架
公开(公告)号：US20100026203A1
公开(公告)日：2010-02-04
申请号：US12183492
申请日：2008-07-31
申请人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
发明人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
IPC分类号： H05B33/00
CPC分类号： H05B33/0815 , H05B33/0827 , H05B33/086
摘要： Disclosed are example techniques for frame-based power management in a light emitting diode (LED) system having a plurality of LED strings. A voltage source provides an output voltage to drive the LED strings. An LED driver generates a frame timing reference representative of the frame rate or display timing of a series of image frames to be displayed via the LED system. An update reference is generated from the frame timing reference. The LED driver monitors one or more operating parameters of the LED system. In response to update triggers marked by the update reference, the LED driver adjusts the output voltage of the voltage source based on the status of each of the one or more monitored operating parameters (either from the previous update period or determined in response to the update trigger), thereby synchronizing the updating of the output voltage to the frame rate (or a virtual approximation of the frame rate) of the video being displayed.
摘要翻译：公开了具有多个LED串的发光二极管（LED）系统中用于基于帧的电源管理的示例技术。电压源提供输出电压来驱动LED串。 LED驱动器生成表示要通过LED系统显示的一系列图像帧的帧速率或显示定时的帧定时参考。从帧定时参考生成更新参考。 LED驱动器监视LED系统的一个或多个操作参数。响应于由更新参考标记的更新触发器，LED驱动器基于一个或多个监视的操作参数中的每一个的状态来调节电压源的输出电压（从先前的更新周期或响应于更新确定）触发），从而将输出电压的更新同步于正在显示的视频的帧速率（或帧速率的虚拟近似）。

4. 发明授权

US08035315B2 LED driver with feedback calibration 有权
标题翻译： LED驱动器带反馈校准
公开(公告)号：US08035315B2
公开(公告)日：2011-10-11
申请号：US12340985
申请日：2008-12-22
申请人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
发明人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Jan Krellner , Kenneth C. Kwok , Victor K. Lee , Weizhuang W. Xin
IPC分类号： H05B37/02 , G09G5/00
CPC分类号： H05B33/0818 , H05B33/0827 , H05B33/0851
摘要： Power management in a light emitting diode (LED) system having a plurality of LED strings is disclosed. A voltage source provides an output voltage to drive a plurality of LED strings. An LED driver implements a feedback mechanism to monitor the tail voltages of the active LED strings to identify the minimum tail voltage and adjust the output voltage of the voltage source based on the lowest tail voltage. A loop calibration module of the LED driver calibrates the feedback mechanism of the LED driver based on a relationship between a digital code value used to generate a particular output voltage and another digital code value generated based on the minimum tail voltage resulting from the particular output voltage.
摘要翻译：公开了具有多个LED串的发光二极管（LED）系统中的电源管理。电压源提供输出电压以驱动多个LED串。 LED驱动器实现反馈机制来监测有源LED串的尾部电压以识别最小尾电压，并且基于最低的尾部电压来调节电压源的输出电压。 LED驱动器的回路校准模块基于用于产生特定输出电压的数字代码值与基于由特定输出电压产生的最小尾部电压产生的另一数字代码值之间的关系来校准LED驱动器的反馈机制。

5. 发明授权

US08106604B2 LED driver with dynamic power management 有权
标题翻译： LED驱动器具有动态电源管理功能
公开(公告)号：US08106604B2
公开(公告)日：2012-01-31
申请号：US12504335
申请日：2009-07-16
申请人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Kenneth C. Kwok , Victor K. Lee
发明人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Kenneth C. Kwok , Victor K. Lee
IPC分类号： H05B37/02
CPC分类号： H05B33/0827 , G09G3/342 , G09G2320/064 , H05B33/0815 , H05B33/0818
摘要： A light emitting diode (LED) system implements a LED driver to drive a set of one or more LED strings. The LED driver includes a voltage source to provide an adjustable output voltage to a head end of each LED string of the set for a first duration and a second duration following the first duration. The LED driver further includes a feedback controller to control the voltage source to adjust the output voltage for the second duration based on a digital code value generated from a minimum tail voltage of one or more tail voltages of the set at a sample point of the first duration. The LED driver further includes a power controller to temporarily enable one or more components of the feedback controller for a sample period of the first duration, the sample period comprising the sample point.
摘要翻译：发光二极管（LED）系统实现LED驱动器以驱动一组或多个LED串。 LED驱动器包括电压源，以在第一持续时间和第一持续时间之后的第一持续时间和第二持续时间内向组的每个LED串的头端提供可调节的输出电压。所述LED驱动器还包括反馈控制器，用于控制所述电压源，以基于在所述第一持续时间内的所述第一持续时间的采样点从所述组的一个或多个尾部电压的最小尾部电压产生的数字代码值来调整所述输出电压持续时间 LED驱动器还包括功率控制器，用于临时使得反馈控制器的一个或多个部件在第一持续时间的采样周期内，该采样周期包括采样点。

6. 发明申请

US20090273288A1 LED DRIVER WITH DYNAMIC POWER MANAGEMENT 有权
标题翻译： LED驱动器与动态电源管理
公开(公告)号：US20090273288A1
公开(公告)日：2009-11-05
申请号：US12504335
申请日：2009-07-16
申请人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Kenneth C. Kwok , Victor K. Lee
发明人： Bin Zhao , Jack W. Cornish , Brian B. Horng , Andrew M. Kameya , Kenneth C. Kwok , Victor K. Lee
IPC分类号： H05B37/02
CPC分类号： H05B33/0827 , G09G3/342 , G09G2320/064 , H05B33/0815 , H05B33/0818
摘要： A light emitting diode (LED) system implements a LED driver to drive a set of one or more LED strings. The LED driver includes a voltage source to provide an adjustable output voltage to a head end of each LED string of the set for a first duration and a second duration following the first duration. The LED driver further includes a feedback controller to control the voltage source to adjust the output voltage for the second duration based on a digital code value generated from a minimum tail voltage of one or more tail voltages of the set at a sample point of the first duration. The LED driver further includes a power controller to temporarily enable one or more components of the feedback controller for a sample period of the first duration, the sample period comprising the sample point.
摘要翻译：发光二极管（LED）系统实现LED驱动器以驱动一组或多个LED串。 LED驱动器包括电压源，以在第一持续时间和第一持续时间之后的第一持续时间和第二持续时间内向组的每个LED串的头端提供可调节的输出电压。所述LED驱动器还包括反馈控制器，用于控制所述电压源，以基于在所述第一持续时间内的所述第一持续时间的采样点从所述组的一个或多个尾部电压的最小尾部电压产生的数字代码值来调整所述输出电压持续时间 LED驱动器还包括功率控制器，用于临时使得反馈控制器的一个或多个部件在第一持续时间的采样周期内，该采样周期包括采样点。

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