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1. 发明授权

US08103120B2 Method and apparatus of local contrast enhancement 有权
标题翻译：局部对比度增强的方法和装置
公开(公告)号：US08103120B2
公开(公告)日：2012-01-24
申请号：US12234895
申请日：2008-09-22
申请人： Wai Pak Choi , Stephen Wai-Yan Lai , Wing Chi Stephen Chan
发明人： Wai Pak Choi , Stephen Wai-Yan Lai , Wing Chi Stephen Chan
IPC分类号： G06K9/40
CPC分类号： G09G3/36 , G09G3/3406 , G09G2320/0271 , G09G2320/0646 , G09G2320/066 , G09G2330/021 , G09G2360/16
摘要： Methods and apparatuses of contrast enhancement on an image are disclosed. The method performs local shading of fine contrast variations in an image, with particular advantage in tone mapping applications. The amounts of shading are determined by the preferred degree of increased image contrast 810, including compensation for subsequent tone mapping, and the difference between a profile signal 803 and the image signal 801 conditional on the signal profile level being higher than the original image signal level, wherein avoiding boosting of brightness level to obtain contrast enhancement. The profile signal 803 is calculated by the weighted sum of the image signal and the absolute signal variation which is the absolute value of the variation between the brightness of two neighbor pixels. This amount of shading is reduced to zero when the profile signal 803 is lower than the original image signal 801 for avoiding the overshooting problem at sharp edges in an image. Uniform RGB scaling is applied to preserve original color tones.
摘要翻译：公开了对图像进行对比度增强的方法和装置。该方法执行图像中精细对比度变化的局部阴影，在色调映射应用中特别有利。阴影量由增加的图像对比度810的优选程度确定，包括对随后的色调映射的补偿，以及条件信号803与图像信号801之间的差异，其信号简档级别高于原始图像信号电平，其中避免提高亮度水平以获得对比度增强。通过图像信号和作为两个相邻像素的亮度之间的变化的绝对值的绝对信号变化的加权和计算分布信号803。当轮廓信号803低于原始图像信号801时，这个阴影量减少到零，以避免在图像中的尖锐边缘处的过冲问题。应用均匀的RGB缩放以保留原始色调。

2. 发明申请

US20120212145A1 ILLUMINATION BRIGHTNESS CONTROL APPARATUS AND METHOD 有权
标题翻译：照明亮度控制装置和方法
公开(公告)号：US20120212145A1
公开(公告)日：2012-08-23
申请号：US13032486
申请日：2011-02-22
申请人： Wing Chi Stephen CHAN , Hing Mo Jeff Lam , Jun Pan , Stephen Wai-Yan Lai , Xiaolong He , Wai Kin Josh Cheng
发明人： Wing Chi Stephen CHAN , Hing Mo Jeff Lam , Jun Pan , Stephen Wai-Yan Lai , Xiaolong He , Wai Kin Josh Cheng
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , Y02B20/346
摘要： An illumination brightness control apparatus receives an input voltage from a light dimmer and produces a control signal to regulate a drive signal to a power conversion switch of a switching mode power converter. The apparatus includes a voltage conditioning circuit to condition the dimmer input voltage to provide a conditioned voltage signal; an ADC circuit to sample analog data of the conditioned voltage signal at a sampling rate that is high relative to a nominal variation rate of the dimmer input voltage and to provide digital data corresponding to the sampled analog data; a digital signal processing circuit to produce a running data average of the digital data; and a controller to produce a signal corresponding to the running data average as the control signal to regulate the drive signal.
摘要翻译：照明亮度控制装置从光调光器接收输入电压，并产生控制信号以调节到开关模式功率转换器的功率转换开关的驱动信号。该装置包括用于调节调光器输入电压以提供调节电压信号的电压调节电路; ADC电路，以相对于调光器输入电压的标称变化率为高的采样率对经调节的电压信号的模拟数据进行采样，并提供对应于采样的模拟数据的数字数据; 数字信号处理电路，用于产生数字数据的运行数据平均; 以及控制器，用于产生对应于运行数据平均值的信号作为控制信号以调节驱动信号。

3. 发明授权

US08471501B2 Illumination brightness control apparatus and method 有权
标题翻译：照明亮度控制装置及方法
公开(公告)号：US08471501B2
公开(公告)日：2013-06-25
申请号：US13032486
申请日：2011-02-22
申请人： Wing Chi Stephen Chan , Hing Mo Jeff Lam , Jun Pan , Stephen Wai-Yan Lai , Xiaolong He , Wai Kin Josh Cheng
发明人： Wing Chi Stephen Chan , Hing Mo Jeff Lam , Jun Pan , Stephen Wai-Yan Lai , Xiaolong He , Wai Kin Josh Cheng
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , Y02B20/346
摘要： An illumination brightness control apparatus receives an input voltage from a light dimmer and produces a control signal to regulate a drive signal to a power conversion switch of a switching mode power converter. The apparatus includes a voltage conditioning circuit to condition the dimmer input voltage to provide a conditioned voltage signal; an ADC circuit to sample analog data of the conditioned voltage signal at a sampling rate that is high relative to a nominal variation rate of the dimmer input voltage and to provide digital data corresponding to the sampled analog data; a digital signal processing circuit to produce a running data average of the digital data; and a controller to produce a signal corresponding to the running data average as the control signal to regulate the drive signal.
摘要翻译：照明亮度控制装置从光调光器接收输入电压，并产生控制信号以调节到开关模式功率转换器的功率转换开关的驱动信号。该装置包括用于调节调光器输入电压以提供调节电压信号的电压调节电路; ADC电路，以相对于调光器输入电压的标称变化率为高的采样率对经调节的电压信号的模拟数据进行采样，并提供对应于采样的模拟数据的数字数据; 数字信号处理电路，用于产生数字数据的运行数据平均; 以及控制器，用于产生对应于运行数据平均值的信号作为控制信号以调节驱动信号。

4. 发明授权

US07400098B2 Method and apparatus for applying adaptive precharge to an electroluminescence display 有权
标题翻译：将自适应预充电应用于电致发光显示器的方法和装置
公开(公告)号：US07400098B2
公开(公告)日：2008-07-15
申请号：US10747224
申请日：2003-12-30
申请人： Chung Yee Ricky Ng , Stephen Wai-Yan Lai , Wai Yu Felix Wong , Cheung Fai Lee
发明人： Chung Yee Ricky Ng , Stephen Wai-Yan Lai , Wai Yu Felix Wong , Cheung Fai Lee
IPC分类号： G09G3/10
CPC分类号： G09G3/3216 , G09G3/3283 , G09G2310/0248
摘要： According to the present invention, a display driver includes a voltage and current source that drive pixels and compensate for parasitic voltage to produce row pixels having intensities that are relatively uncorrelated to the number of “ON” pixels in a given row. The voltage source that provides the pre-charge for each pixel includes a constant value and a compensation voltage determined based on the number of “ON” pixels in each row. The compensation voltage is also determined based on the characteristics of the diodes associated with each pixel and the resistance associated the common ground of each row.
摘要翻译：根据本发明，显示驱动器包括驱动像素并补偿寄生电压以产生具有与给定行中的“ON”像素的数量相对不相关的强度的行像素的电压和电流源。为每个像素提供预充电的电压源包括恒定值和基于每一行中的“ON”像素数确定的补偿电压。补偿电压还根据与每个像素相关联的二极管的特性以及与每行的公共地相关联的电阻来确定。

5. 发明授权

US07239117B2 Programmable inductor current control for DC-DC converters 有权
标题翻译：用于DC-DC转换器的可编程电感电流控制
公开(公告)号：US07239117B2
公开(公告)日：2007-07-03
申请号：US11029336
申请日：2005-01-06
申请人： Cheung Fai Lee , Stephen Wai-Yan Lai , Alvin Chit-Sang Chan , David Chin-Tung Or
发明人： Cheung Fai Lee , Stephen Wai-Yan Lai , Alvin Chit-Sang Chan , David Chin-Tung Or
IPC分类号： G05F1/40
CPC分类号： H02M3/156 , H02M2001/0009
摘要： A DC-DC converter circuit includes an inductor having an inductor current, an inductor current emulation circuit for producing an emulated inductor current, and a control circuit coupled with the emulation circuit for receiving the emulated inductor current and determining a peak inductor current for the DC-DC converter.
摘要翻译： DC-DC转换器电路包括具有电感器电流的电感器，用于产生仿真电感器电流的电感器电流仿真电路，以及与仿真电路耦合的控制电路，用于接收仿真电感器电流并确定DC的峰值电感器电流 -DC转换器。

6. 发明申请

US20090251391A1 Method and apparatus for power recycling in a display system 审中-公开
标题翻译：显示系统中电力回收的方法和装置
公开(公告)号：US20090251391A1
公开(公告)日：2009-10-08
申请号：US12080297
申请日：2008-04-02
申请人： Ricky Chung Yee Ng , Felix Wai Yu Wong , Kenneth Chi Wai Lee , Stephen Wai-Yan Lai , Johnkid Lo
发明人： Ricky Chung Yee Ng , Felix Wai Yu Wong , Kenneth Chi Wai Lee , Stephen Wai-Yan Lai , Johnkid Lo
IPC分类号： G09G3/30
CPC分类号： G09G3/3216 , G09G2320/0209 , G09G2320/0233 , G09G2330/021 , G09G2330/023
摘要： A power recycling method and apparatus for driving capacitive display elements are described. The driving process involves charging and discharging the display elements. More particularly, the method effectively reuses some of the energy during the discharging process. Energy in display elements flows back from the panel to a power supply and other optionally to devices like RAM, MCU directly during the discharging process. Diodes between one or more power supplies and the display elements ensure that the discharge paths are disconnected when the voltage of display elements drops below the voltage of the power supply. A resistor path from the display elements to ground or a power supply lower than the display threshold voltage of the display elements guarantees that elements are turned OFF after the discharge process.
摘要翻译：描述用于驱动电容式显示元件的电力回收方法和装置。驱动过程涉及对显示元件进行充电和放电。更具体地说，该方法在放电过程中有效地重新使用一些能量。在放电过程中，显示元件的能量从面板流向电源，另外还可以直接从RAM，MCU等设备流出。一个或多个电源和显示元件之间的二极管确保当显示元件的电压降到电源电压以下时，放电路径断开。从显示元件到地的电阻路径或比显示元件的显示阈值电压低的电源保证在放电过程之后元件被关闭。

7. 发明授权

US07791575B2 Circuit for driving display panel with transition control 有权
标题翻译：用于驱动具有转换控制的显示面板的电路
公开(公告)号：US07791575B2
公开(公告)日：2010-09-07
申请号：US11181913
申请日：2005-07-15
申请人： Yuen Pat Lau , Wai Hon Ng , Stephen Wai-Yan Lai
发明人： Yuen Pat Lau , Wai Hon Ng , Stephen Wai-Yan Lai
IPC分类号： G09G3/36
CPC分类号： G09G3/3696 , G09G3/3688 , G09G2320/0252 , G09G2340/16
摘要： A driving circuit for driving a display panel including a plurality of pixels. The driving circuit includes a selecting signal generator to generate a plurality of selecting signals according to a first and a second pixel data, a voltage divider to provide a plurality of sub-transition voltages, and a voltage selector coupled to receive the plurality of sub-transition voltages and the selecting signal, and to selectively output a plurality of sub-transition voltages serially according to the selecting signals. A drive buffer is coupled to receive the outputted sub-transition voltages serially and to serially generate a plurality of sub-transition driving voltages according to the outputted sub-transition voltages during a transition time period.
摘要翻译：一种用于驱动包括多个像素的显示面板的驱动电路。驱动电路包括：选择信号发生器，用于根据第一和第二像素数据产生多个选择信号;分压器，用于提供多个次跃迁电压;以及电压选择器，耦合以接收多个子转换电压，转换电压和选择信号，并且根据选择信号有选择地输出多个副跃迁电压。驱动缓冲器被耦合以串行地接收输出的副跃迁电压，并且在转换时段期间根据输出的次级跃迁电压串行地产生多个子跃迁驱动电压。

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