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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。
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公开(公告)号：US20110243437A1
公开(公告)日：2011-10-06
申请号：US13093364
申请日：2011-04-25
IPC分类号： G06K9/36
CPC分类号： G06T9/008
摘要： A method for compressing image data into a sequence of codes, the image data being represented by a plurality of input color vectors. The method includes a repetitive processing of one color vector at a time with the following steps: receiving one of the input color vectors; comparing the received input color vector with codebook words in a codebook, the codebook words being expressed as color vectors; compressing the received input color vector to generate a code based on the comparison; updating the codebook with a color vector, the color vector being generated by decoding the code; and outputting the code before receiving a next one of the input color vectors; wherein the updating may include rearranging the order of the codebook words based on the comparison.
摘要翻译： 一种用于将图像数据压缩成代码序列的方法，所述图像数据由多个输入颜色矢量表示。 该方法包括一次一个颜色矢量的重复处理，具有以下步骤：接收输入颜色矢量之一; 将接收到的输入颜色矢量与码本中的码本字进行比较，将码本字表示为彩色矢量; 压缩接收到的输入颜色矢量以生成基于该比较的代码; 用彩色矢量更新码本，通过对码进行解码生成彩色矢量; 以及在接收所述输入颜色矢量中的下一个之前输出所述代码; 其中所述更新可以包括基于所述比较重新排列所述码本字的顺序。
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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。
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公开(公告)号：US20100214232A1
公开(公告)日：2010-08-26
申请号：US12390637
申请日：2009-02-23
申请人： Wing Chi Stephen CHAN , Wai Pak CHOI , Wai Kin CHENG , Kwok Wah CHU , Siu Hong LUI , Yao LU , Wai Hon NG
发明人： Wing Chi Stephen CHAN , Wai Pak CHOI , Wai Kin CHENG , Kwok Wah CHU , Siu Hong LUI , Yao LU , Wai Hon NG
IPC分类号： G06F3/041
CPC分类号： G06F3/044 , G06F3/04883 , G06F2203/04808
摘要： A controller for detection of touches by a single finger or multiple fingers on a touch panel, the touch panel including a first group of electrodes arranged in a first direction and a second group of electrodes arranged in a second direction, thereby forming a plurality of crossover points. The controller includes: a plurality of signal drivers coupled to the first group of electrodes and configured to excite the first group of electrodes sequentially using a spread spectrum signal; a plurality of signal sensors coupled to the second group of electrodes and configured to detect peaks and troughs of capacitive coupled signals at the second group of electrodes, the detecting being performed simultaneously for the crossover points along a current one of the first group of electrodes that is being excited; and a signal processing device configured to detect the touches on the touch panel and to determine touch positions and touch movements, based on the detected peaks and troughs of the capacitive coupled signals.
摘要翻译： 一种用于在触摸面板上检测单个手指或多个手指触摸的控制器，所述触摸面板包括沿第一方向布置的第一组电极和沿第二方向布置的第二组电极，由此形成多个交叉 积分 所述控制器包括：多个信号驱动器，其耦合到所述第一组电极并且被配置为使用扩频信号顺序地激励所述第一组电极; 多个信号传感器，其耦合到所述第二组电极并且被配置为检测所述第二组电极处的电容耦合信号的峰值和谷值，所述检测同时对于沿着所述第一组电极中的当前电极的交叉点执行， 正在兴奋 以及信号处理装置，被配置为基于检测到的电容耦合信号的峰值和谷来检测触摸面板上的触摸并确定触摸位置和触摸移动。
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公开(公告)号：US08102360B2
公开(公告)日：2012-01-24
申请号：US12116739
申请日：2008-05-07
IPC分类号： G09G3/36
CPC分类号： G09G3/3406 , G09G2320/0646 , G09G2330/021 , G09G2360/16
摘要： A method of adjusting image intensity to compensate backlight dimming in dynamic backlight control, the method including estimating distortion of an image that corresponds to different mapping index values 204 selected from the intensity levels 202 of an image. The estimated distortion of image represents factors including the quantity of pixels 205 that have intensity exceeding a mapping index value 204; and the amount 206 that the intensity of each pixel exceeds the corresponding mapping index value. The method further includes selecting from a plurality of schemes 301 for adjusting image intensity to minimize the estimated distortion obtained from the estimating.
摘要翻译： 一种调整图像强度以补偿动态背光控制中的背光调光的方法，所述方法包括估计对应于从图像的强度级202选择的不同映射索引值204的图像的失真。 图像的估计失真表示包括强度超过映射指标值204的像素205的数量的因素; 以及每个像素的强度超过相应的映射索引值的量206。 该方法还包括从多个方案301中选择用于调整图像强度以最小化从估计获得的估计失真。
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公开(公告)号：US20100104207A1
公开(公告)日：2010-04-29
申请号：US12257788
申请日：2008-10-24
IPC分类号： G06K9/00
摘要： A method for compressing image data into a sequence of codes, the image data being represented by a plurality of input color vectors. The method includes a repetitive processing of one color vector at a time with the following steps: receiving one of the input color vectors; comparing the received input color vector with codebook words in a codebook, the codebook words being expressed as color vectors; compressing the received input color vector to generate a code based on the comparison; updating the codebook with a color vector, the color vector being generated by decoding the code; and outputting the code before receiving a next one of the input color vectors; wherein the updating may include rearranging the order of the codebook words based on the comparison.
摘要翻译： 一种用于将图像数据压缩成代码序列的方法，所述图像数据由多个输入颜色矢量表示。 该方法包括一次一个颜色矢量的重复处理，具有以下步骤：接收输入颜色矢量之一; 将接收到的输入颜色矢量与码本中的码本字进行比较，将码本字表示为彩色矢量; 压缩接收到的输入颜色矢量以生成基于该比较的代码; 用彩色矢量更新码本，通过对码进行解码生成彩色矢量; 以及在接收所述输入颜色矢量中的下一个之前输出所述代码; 其中所述更新可以包括基于所述比较重新排列所述码本字的顺序。
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公开(公告)号：US08314779B2
公开(公告)日：2012-11-20
申请号：US12390637
申请日：2009-02-23
申请人： Wing Chi Stephen Chan , Wai Pak Choi , Wai Kin Cheng , Kwok Wah Chu , Siu Hong Lui , Yao Lu , Wai Hon Ng
发明人： Wing Chi Stephen Chan , Wai Pak Choi , Wai Kin Cheng , Kwok Wah Chu , Siu Hong Lui , Yao Lu , Wai Hon Ng
IPC分类号： G06F3/045
CPC分类号： G06F3/044 , G06F3/04883 , G06F2203/04808
摘要： A controller for detection of touches by a single finger or multiple fingers on a touch panel, the touch panel including a first group of electrodes arranged in a first direction and a second group of electrodes arranged in a second direction, thereby forming a plurality of crossover points. The controller includes: a plurality of signal drivers coupled to the first group of electrodes and configured to excite the first group of electrodes sequentially using a spread spectrum signal; a plurality of signal sensors coupled to the second group of electrodes and configured to detect peaks and troughs of capacitive coupled signals at the second group of electrodes, the detecting being performed simultaneously for the crossover points along a current one of the first group of electrodes that is being excited; and a signal processing device configured to detect the touches on the touch panel and to determine touch positions and touch movements, based on the detected peaks and troughs of the capacitive coupled signals.
摘要翻译： 一种用于在触摸面板上检测单个手指或多个手指触摸的控制器，所述触摸面板包括沿第一方向布置的第一组电极和沿第二方向布置的第二组电极，由此形成多个交叉 积分 所述控制器包括：多个信号驱动器，其耦合到所述第一组电极并且被配置为使用扩频信号顺序地激励所述第一组电极; 多个信号传感器，其耦合到所述第二组电极并且被配置为检测所述第二组电极处的电容耦合信号的峰值和谷值，所述检测同时对于沿着所述第一组电极中的当前电极的交叉点执行， 正在兴奋 以及信号处理装置，被配置为基于检测到的电容耦合信号的峰值和谷来检测触摸面板上的触摸并确定触摸位置和触摸移动。
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公开(公告)号：US08103120B2
公开(公告)日：2012-01-24
申请号：US12234895
申请日：2008-09-22
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。
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