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. 发明申请

US20070035667A1 Method and apparatus for digital MTS receiver 有权
标题翻译：数字MTS接收机的方法和装置
公开(公告)号：US20070035667A1
公开(公告)日：2007-02-15
申请号：US11199661
申请日：2005-08-09
申请人： Feng Ying , Karl Renner , Weider Chang , Shereef Shehata , Viet Dinh , Xiaodong Wu , Walter Demmer
发明人： Feng Ying , Karl Renner , Weider Chang , Shereef Shehata , Viet Dinh , Xiaodong Wu , Walter Demmer
IPC分类号： H04H5/00 , H04N7/00
CPC分类号： H04H40/45
摘要： System and method for an all-digital audio receiver for a BTSC MTS audio signal or other composite signal that is FM modulated. A preferred embodiment comprises a digital FM demodulator for receiving an analog to digital quantized SIF signal and performing demodulation and outputting a composite audio signal, and a digital audio processor for decomposing the composite audio signal into at least the SAP, stereo and monaural signals for audio reproduction. In a preferred embodiment, the digital audio processor is a programmable digital signal processor. In a preferred embodiment, the digital FM demodulator and the digital audio processor are implemented as an integrated circuit. Methods for processing the audio signal using the digital processors of the invention are provided.
摘要翻译：用于BTSC MTS音频信号或FM调制的其他复合信号的全数字音频接收机的系统和方法。优选实施例包括用于接收模数数字量化SIF信号并执行解调和输出复合音频信号的数字FM解调器，以及用于将复合音频信号分解为至少SAP，用于音频的立体声和单声道信号的数字音频处理器再生产。在优选实施例中，数字音频处理器是可编程数字信号处理器。在优选实施例中，数字FM解调器和数字音频处理器被实现为集成电路。提供了使用本发明的数字处理器来处理音频信号的方法。

2. 发明申请

US20060232709A1 Interframe noise reduction for video 有权
公开(公告)号：US20060232709A1
公开(公告)日：2006-10-19
申请号：US11109290
申请日：2005-04-19
申请人： Karl Renner , Shereef Shehata , Jason Meiners , Weider Chang
发明人： Karl Renner , Shereef Shehata , Jason Meiners , Weider Chang
IPC分类号： H04N5/00 , H04N9/78
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.

3. 发明申请

US20070064151A1 System and implementation for IF compensation for video decoders 有权
标题翻译：视频解码器IF补偿的系统和实现
公开(公告)号：US20070064151A1
公开(公告)日：2007-03-22
申请号：US11220488
申请日：2005-09-07
申请人： Weider Chang , Karl Renner , Shereef Shehata
发明人： Weider Chang , Karl Renner , Shereef Shehata
IPC分类号： H04N7/04
CPC分类号： H04N5/455 , H04B1/1027 , H04B1/123 , H04B10/85 , H04N9/646 , H04N21/4382 , H04N21/6118
摘要： Base band compensation for an IF stage in a television provides significant advantages over compensation applied to the composite signal. Each base band color difference signal is filtered to obtain cross-talk elements, which are then applied to the opposite channel to eliminate the cross-talk components from the color difference signal channels. The compensation technique is applicable to IF stages generally, including those based on SAW filters. High and low gain compensation of the cross-talk compensated signals may also be performed to reduce distortion in the compensated signals. The base band compensation tends to reduce or eliminate visual artifacts in a television image, especially where sharp contrast transitions occur in the image.
摘要翻译：电视中的IF级的基带补偿相对于复合信号的补偿提供了显着的优点。对每个基带色差信号进行滤波以获得串扰元件，然后将它们应用于相反通道，以消除色差信号通道中的串扰分量。补偿技术一般适用于IF级，包括基于SAW滤波器的IF级。也可以执行串扰补偿信号的高和低增益补偿以减少补偿信号中的失真。基带补偿趋向于减少或消除电视图像中的视觉伪影，特别是在图像中发生尖锐的对比度转换时。

4. 发明申请

US20080056566A1 VIDEO PROCESSING 审中-公开
标题翻译：视频处理
公开(公告)号：US20080056566A1
公开(公告)日：2008-03-06
申请号：US11846038
申请日：2007-08-28
申请人： Shereef Shehata , Weider Chang
发明人： Shereef Shehata , Weider Chang
IPC分类号： G06K9/00
CPC分类号： H04N5/57 , H04N21/4318 , H04N21/44008
摘要： Digital video contrast enhancement and skin tone correction by conversio to CIECAM02 color space with lightness transformation and a skin tone probability density function of hue and saturation.
摘要翻译：数字视频对比度增强和肤色校正，通过对CIECAM02颜色空间进行亮度变换和色调和饱和度的肤色概率密度函数。

5. 发明申请

US20080055479A1 Color Space Appearance Model Video Processor 有权
标题翻译：彩色空间外观模型视频处理器
公开(公告)号：US20080055479A1
公开(公告)日：2008-03-06
申请号：US11849456
申请日：2007-09-04
申请人： Shereef Shehata , Weider Chang
发明人： Shereef Shehata , Weider Chang
IPC分类号： H04N9/64
CPC分类号： H04N9/643 , G09G5/02 , G09G2320/0242 , H04N9/64 , H04N9/646 , H04N9/67 , H04N9/68 , H04N9/73
摘要： A method of color processing determines whether a pixel color is within at least one range of predetermined colors corresponding to a viewer expected color. If so, the method altering the pixel color to better approximate the viewer expected color. For detection of skin tones determining whether the pixel color is within a range of predetermined colors includes discounting an illuminant of the pixel color. The viewer expected colors are preferably skin tone, grass green and sky blue. The saturation level of grass green and sky blue are enhanced and that of skin tones are suppressed. The saturation s is limited based upon lightness J and hue h to convert to an allowable RGB color format range.
摘要翻译：颜色处理的方法确定像素颜色是否在与观众期望颜色相对应的预定颜色的至少一个范围内。如果是这样，该方法改变像素颜色以更好地近似观看者预期的颜色。为了检测肤色，确定像素颜色是否在预定颜色的范围内，包括对像素颜色的光源进行折扣。观众期望的颜色优选是肤色，草绿色和天蓝色。草绿色和天蓝色的饱和度提高，肤色的饱和度得到抑制。基于亮度J和色调h来限制饱和度以转换为允许的RGB颜色格式范围。

6. 发明申请

US20080056605A1 VIDEO PROCESSING 有权
公开(公告)号：US20080056605A1
公开(公告)日：2008-03-06
申请号：US11846201
申请日：2007-08-28
申请人： Shereef Shehata , Weider Chang
发明人： Shereef Shehata , Weider Chang
IPC分类号： G06K9/40
CPC分类号： G06K9/38 , G06K9/4652 , H04N1/6027
摘要： Digital video contrast enhancement and skin tone correction by conversio to CIECAM02 color space with lightness transformation and a skin tone probability density function of hue and saturation.

7. 发明申请

US20080055476A1 VIDEO PROCESSING 审中-公开
标题翻译：视频处理
公开(公告)号：US20080055476A1
公开(公告)日：2008-03-06
申请号：US11846021
申请日：2007-08-28
申请人： Shereef Shehata , Weider Chang
发明人： Shereef Shehata , Weider Chang
IPC分类号： H04N5/57
CPC分类号： H04N9/643
摘要： Digital video contrast enhancement and skin tone correction by conversion to CIECAM02 color space with lightness transformation and a skin tone probability density function of hue and saturation.
摘要翻译：数字视频对比度增强和肤色校正通过转换为CIECAM02颜色空间，具有亮度转换和色调和饱和度的肤色概率密度函数。

8. 发明申请

US20060268178A1 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：US20060268178A1
公开(公告)日：2006-11-30
申请号：US11135758
申请日：2005-05-24
申请人： Weider Chang , Karl Renner , Ramesh Chandrasekaran , Steven Clynes , Jason Meiners
发明人： Weider Chang , Karl Renner , Ramesh Chandrasekaran , Steven Clynes , Jason Meiners
IPC分类号： H04N9/78
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。

9. 发明申请

US20060268179A1 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：US20060268179A1
公开(公告)日：2006-11-30
申请号：US11135799
申请日：2005-05-24
申请人： Karl Renner , Weider Chang , Ramesh Chandrasekaran
发明人： Karl Renner , Weider Chang , Ramesh Chandrasekaran
IPC分类号： H04N9/78
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。

10. 发明申请

US20070076128A1 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：US20070076128A1
公开(公告)日：2007-04-05
申请号：US11240718
申请日：2005-10-01
申请人： Ramesh Chandrasekaran , Weider Chang , Karl Renner
发明人： Ramesh Chandrasekaran , Weider Chang , Karl Renner
IPC分类号： H04N5/14
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。

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