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1. 发明授权

US07443454B2 Method for treating inter-frame motion in a composite video signal 有权
标题翻译：在复合视频信号中处理帧间运动的方法
公开(公告)号：US07443454B2
公开(公告)日：2008-10-28
申请号：US11240718
申请日：2005-10-01
申请人： Ramesh M. Chandrasekaran , Weider Peter Chang , Karl Renner
发明人： Ramesh M. Chandrasekaran , Weider Peter Chang , Karl Renner
IPC分类号： H04N9/78 , H04N5/21
CPC分类号： H04N5/144
摘要： A method for treating inter-frame motion in a series of consecutive signal frames of a composite video signal includes the steps of, for an evaluation pixel position in each frame of a test frame-set including three successive signal frames: (a) determining whether there is at least a predetermined difference in chroma component or in luma component signals at the evaluation pixel; (b) if in step (a) there is not a predetermined difference in chroma component signals or in luma component signals, determining whether a first and third frame of the test frame-set are substantially identical; (c) determining whether at least a first predetermined number of the luma or chroma component signals in the test frame-set present at least one false color; and (d) determining whether at least a second predetermined number of high frequency luma component signals exist in the test frame-set.
摘要翻译：一种用于处理复合视频信号的一系列连续信号帧中的帧间运动的方法包括以下步骤：对于包括三个连续信号帧的测试帧集合的每个帧中的评估像素位置：（a）确定是否评估像素处的色度分量或亮度分量信号中至少存在预定的差异; （b）如果在步骤（a）中色度分量信号或亮度分量信号中没有预定的差异，则确定测试帧组的第一和第三帧是否基本相同; （c）确定测试帧组中至少第一预定数量的亮度或色度分量信号是否存在至少一种假色; 和（d）确定在测试帧组中是否存在至少第二预定数量的高频亮度分量信号。

2. 发明授权

US07453525B2 Motion detector for a video display system 有权
标题翻译：用于视频显示系统的运动检测器
公开(公告)号：US07453525B2
公开(公告)日：2008-11-18
申请号：US11135799
申请日：2005-05-24
申请人： Karl Renner , Weider Peter Chang , Ramesh M. Chandrasekaran
发明人： Karl Renner , Weider Peter Chang , Ramesh M. Chandrasekaran
IPC分类号： H04N9/78 , H04N5/14
CPC分类号： H04N11/146 , H04N5/145 , H04N9/66 , H04N9/77 , H04N9/78 , H04N11/165
摘要： Systems and methods are provided for detecting motion within a composite video signal. A first chroma difference element compares an in-phase chroma component of the composite video signal to a delayed representation of the in-phase chroma component to produce a first chroma difference value for a given pixel. A second chroma difference element compares a quadrature chroma component of the composite video signal to a delayed representation of the quadrature chroma component to produce a second chroma difference value for the pixel. A parameter mapping component maps the first and second difference values to respective first and second motion parameters that indicates the degree of change in the chroma properties of the pixel. A parameter selector determines a composite motion parameter for the pixel from the first and second motion parameters.
摘要翻译：提供用于检测复合视频信号内的运动的系统和方法。第一色差元件将复合视频信号的同相色度分量与同相色度分量的延迟表示进行比较，以产生给定像素的第一色度差值。第二色差元件将复合视频信号的正交色度分量与正交色度分量的延迟表示进行比较，以产生像素的第二色度差值。参数映射组件将第一和第二差分值映射到指示像素的色度特性的变化程度的相应的第一和第二运动参数。参数选择器从第一和第二运动参数确定像素的复合运动参数。

3. 发明授权

US07355655B2 Systems and methods for separating luma and chroma information in a composite video signal 有权
标题翻译：用于在复合视频信号中分离亮度和色度信息的系统和方法
公开(公告)号：US07355655B2
公开(公告)日：2008-04-08
申请号：US11135758
申请日：2005-05-24
申请人： Weider Peter Chang , Karl Renner , Ramesh M. Chandrasekaran , Steven Clynes , Jason Meiners
发明人： Weider Peter Chang , Karl Renner , Ramesh M. Chandrasekaran , Steven Clynes , Jason Meiners
IPC分类号： H04N9/66
CPC分类号： H04N9/78
摘要： Systems and method are provided for luma-chroma separation. A demodulator system demodulates a composite video signal to produce at least two baseband chroma signals. A given baseband chroma signal contains chroma information for one of a plurality of video frames comprising the composite signal. A three-dimensional (3-D) comb filter removes luma information from a given baseband chroma signal by combining sets of at least two baseband chroma signals to form a 3-D filtered baseband signal.
摘要翻译：提供了用于亮度色度分离的系统和方法。解调器系统解调复合视频信号以产生至少两个基带色度信号。给定的基带色度信号包含包含复合信号的多个视频帧之一的色度信息。三维（3-D）梳状滤波器通过组合至少两个基带色度信号的组合来从给定的基带色度信号中去除亮度信息，以形成3-D滤波的基带信号。

4. 发明申请

US20120008834A1 Motion Detection in Video with Large Areas of Detail 有权
标题翻译：具有大面积细节的视频中的运动检测
公开(公告)号：US20120008834A1
公开(公告)日：2012-01-12
申请号：US13180500
申请日：2011-07-11
申请人： Ramesh M. Chandrasekaran , Fan Zhai , Weider Peter Chang
发明人： Ramesh M. Chandrasekaran , Fan Zhai , Weider Peter Chang
IPC分类号： G06K9/00
CPC分类号： H04N5/144
摘要： A method for motion detection is provided that includes determining a first motion measure for a pixel based on differences between first neighboring pixels of the pixel, determining a detail measure for the pixel, wherein the detail measure is indicative of an amount of detail in second neighboring pixels of the pixel, adapting a first coring threshold and a first gain of a first transfer function based on the detail measure, and using the adapted first transfer function to map the first motion measure to a first motion parameter.
摘要翻译：提供了一种用于运动检测的方法，其包括基于所述像素的第一相邻像素之间的差异来确定像素的第一运动度量，确定所述像素的细节度量，其中所述细节度量指示第二相邻的细节量像素的像素，基于细节度量来适配第一取芯阈值和第一传递函数的第一增益，以及使用适配的第一传递函数将第一运动测量映射到第一运动参数。

5. 发明授权

US08588474B2 Motion detection in video with large areas of detail 有权
标题翻译：视频中的运动检测具有较大的细节区域
公开(公告)号：US08588474B2
公开(公告)日：2013-11-19
申请号：US13180500
申请日：2011-07-11
申请人： Ramesh M Chandrasekaran , Fan Zhai , Weider Peter Chang
发明人： Ramesh M Chandrasekaran , Fan Zhai , Weider Peter Chang
IPC分类号： G06K9/00
CPC分类号： H04N5/144
摘要： A method for motion detection is provided that includes determining a first motion measure for a pixel based on differences between first neighboring pixels of the pixel, determining a detail measure for the pixel, wherein the detail measure is indicative of an amount of detail in second neighboring pixels of the pixel, adapting a first coring threshold and a first gain of a first transfer function based on the detail measure, and using the adapted first transfer function to map the first motion measure to a first motion parameter.
摘要翻译：提供了一种用于运动检测的方法，其包括基于所述像素的第一相邻像素之间的差异来确定像素的第一运动度量，确定所述像素的细节度量，其中所述细节度量指示第二相邻的细节量像素的像素，基于细节度量来适配第一取芯阈值和第一传递函数的第一增益，以及使用适配的第一传递函数将第一运动测量映射到第一运动参数。

6. 发明授权

US07349033B2 Systems and methods for correcting color phase error in video systems 有权
标题翻译：用于校正视频系统中彩色相位误差的系统和方法
公开(公告)号：US07349033B2
公开(公告)日：2008-03-25
申请号：US11134985
申请日：2005-05-23
申请人： Weider Peter Chang , Ramesh M. Chandrasekaran
发明人： Weider Peter Chang , Ramesh M. Chandrasekaran
IPC分类号： H04N9/66 , H04N9/78
CPC分类号： H04N9/66 , H04N5/145 , H04N9/77 , H04N9/78 , H04N11/146 , H04N11/165
摘要： Systems and methods are provided for correcting color phase error in a video decoder system. A demodulator system demodulates the composite input signal and the at least one delayed signal to produce sets of baseband chroma components based on a phase correction value. Color phase correction logic determines the phase correction value for the demodulator system based upon characteristics of the baseband chroma components associated with a series of at least two consecutive frames.
摘要翻译：提供了用于校正视频解码器系统中的彩色相位误差的系统和方法。解调器系统基于相位校正值来解调复合输入信号和至少一个延迟信号以产生基带色度分量集合。彩色相位校正逻辑基于与一系列至少两个连续帧相关联的基带色度分量的特性来确定解调器系统的相位校正值。

7. 发明授权

US07173668B2 Equilibrium based horizontal sync detector for video decoder 有权
标题翻译：用于视频解码器的基于平衡的水平同步检测器
公开(公告)号：US07173668B2
公开(公告)日：2007-02-06
申请号：US10623232
申请日：2003-07-18
申请人： Karl Renner , Walter Heinrich Demmer , Jason M. Meiners , Weider Peter Chang , Airong Amy Zhang
发明人： Karl Renner , Walter Heinrich Demmer , Jason M. Meiners , Weider Peter Chang , Airong Amy Zhang
IPC分类号： H04N5/10 , H03L7/00
CPC分类号： H04N5/10
摘要： The present invention discloses a horizontal sync detector circuit (10) comprising a filter portion (12), an equilibrium accumulator portion (14) coupled to the filter portion (12), a horizontal sync detector portion (16) coupled to the filter portion (12) and to the equilibrium accumulator portion (14), and an output logic portion (18) coupled to the horizontal sync detector portion (16), the output logic portion (18) adapted to produce a phase error (116) based on a combination of a coarse phase error (108) and a fine phase error (112).
摘要翻译：本发明公开了一种包括滤波器部分（12），耦合到滤波器部分（12）的平衡累加器部分（14）的水平同步检测器电路（10），耦合到滤波器部分的水平同步检测器部分 12）和平衡累加器部分（14）以及耦合到水平同步检测器部分（16）的输出逻辑部分（18），输出逻辑部分（18）适于产生基于粗相位误差（108）和精细相位误差（112）的组合。

8. 发明授权

US06459457B1 Adaptive color comb filter 有权
标题翻译：自适应彩梳滤波器
公开(公告)号：US06459457B1
公开(公告)日：2002-10-01
申请号：US09467953
申请日：1999-12-21
申请人： Karl Renner , Weider Peter Chang , Walter Demmer
发明人： Karl Renner , Weider Peter Chang , Walter Demmer
IPC分类号： H04N978
CPC分类号： H04N9/642 , H04N9/78
摘要： A color comb filter (46), video decoder (40) and method for separating chroma (U,V) and luma (Y) signals from a composite video signal (41). The comb filter (46) includes circuitry (48) for generating color filter selections for filtering a chroma video signal (41) and control logic (62) for determining the filter selections based on color boundary properties of the chroma video signal (U,V). The video decoder (40) includes a comb filter (46), a demodulator (42), low pass filter (44), a remodulator (48) and a subtractor (50). The filtered, remodulated chroma signal (Uout,Vout) is subtracted from the composite video signal (41) to produce a luma signal absent hanging dots and false colors.
摘要翻译：彩色梳状滤波器（46），视频解码器（40）和用于从复合视频信号（41）分离色度（U，V）和亮度（Y）信号的方法。梳状滤波器（46）包括用于产生用于滤除色度视频信号（41）的滤色器选择的电路（48）和用于基于色度视频信号（U，V）的颜色边界属性确定滤波器选择的控制逻辑）。视频解码器（40）包括梳状滤波器（46），解调器（42），低通滤波器（44），再调制器（48）和减法器（50）。从复合视频信号（41）中减去经滤波的重新调制的色度信号（Uout，Vout）以产生没有悬点和假色的亮度信号。

9. 发明授权

US06188788B1 Automatic color saturation control in video decoder using recursive algorithm 有权
标题翻译：使用递归算法在视频解码器中进行自动色彩饱和度控制
公开(公告)号：US06188788B1
公开(公告)日：2001-02-13
申请号：US09196825
申请日：1998-11-20
申请人： Karl Renner , Weider Peter Chang
发明人： Karl Renner , Weider Peter Chang
IPC分类号： G06K900
CPC分类号： H04N9/68 , A61K2039/5254 , A61K2039/5256
摘要： A method for automatic color gain control utilizes a plurality of process blocks which compare the measured burst amplitude with an ideal burst amplitude, and then generate necessary scaling factors to automatically control the gain. Each of the process blocks utilizes recursive relationships for accumulating values, which recursive relationships require no multiplications but, rather, require only additions and/or subtractions, which additions and/or subtractions require merely an adder with a change of sign. A scale value is generated which represents the ratio of the measure to ideal burst amplitude value, which is then utilized to generate Cr and Cb in a YCrCb digitized format. This is utilized to scale the U and the V values in a YUV digitized format.
摘要翻译：用于自动色彩增益控制的方法利用多个处理块，将多个处理块与测量的突发幅度与理想的突发幅度进行比较，然后产生必要的缩放因子以自动控制增益。每个进程块利用用于累加值的递归关系，递归关系不需要乘法，而是仅需要加法和/或减法，这些加法和/或减法仅需要具有符号变化的加法器。产生一个比例值，其表示测量与理想脉冲串幅度值的比率，然后用于产生YCrCb数字化格式的Cr和Cb。这用于以YUV数字化格式缩放U值和V值。

10. 发明授权

US07511769B2 Interframe noise reduction for video 有权
标题翻译：视频帧间降噪
公开(公告)号：US07511769B2
公开(公告)日：2009-03-31
申请号：US11109290
申请日：2005-04-19
申请人： Karl Hertzian Renner , Shereef Shehata , Jason Meiners , Weider Peter Chang
发明人： Karl Hertzian Renner , Shereef Shehata , Jason Meiners , Weider Peter Chang
IPC分类号： H04N5/21 , H04N1/409 , H04N1/58
CPC分类号： H04N9/646 , H04N5/21 , H04N5/911
摘要： A system to reduce noise includes a noise measurement device that provides a measure of noise associated with a digital input video signal. A noise reduction filter provides a noise-reduced digital output video signal corresponding to the luma and chroma of the digital input video signal. The noise reduction filter has a parameter that varies on a pixel basis for the component of the digital input video signal as a function of the measure of noise. The range and sensitivity of the noise reduction can be user programmable.
摘要翻译：降低噪声的系统包括提供与数字输入视频信号相关联的噪声测量的噪声测量装置。噪声降低滤波器提供对应于数字输入视频信号的亮度和色度的噪声降低的数字输出视频信号。噪声降低滤波器具有作为噪声测量的函数的数字输入视频信号的分量基于像素变化的参数。降噪的范围和灵敏度可以由用户编程。

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