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1. 发明授权

US08547481B2 Apparatus and method for black bar detection in digital TVs and set-top boxes 有权
标题翻译：数字电视机顶盒黑条检测装置及方法
公开(公告)号：US08547481B2
公开(公告)日：2013-10-01
申请号：US12973241
申请日：2010-12-20
申请人： Paul M. Look , Masaki Kato , Weider Peter Chang
发明人： Paul M. Look , Masaki Kato , Weider Peter Chang
IPC分类号： H04N5/46 , H04N5/21
CPC分类号： H04N5/44 , H04N21/42653 , H04N21/44008 , H04N21/440272
摘要： This invention is a preprocessor apparatus and method algorithm facilitating black bar detection in video frames or fields. The preprocessing marks a sharp discontinuity between pixels a predetermined distance apart on each line. On first detection of this discontinuity the location and pixel value is stored. The location and pixel value is also stored for the last discontinuity in the line. This data enables software to detect top horizontal bars, bottom horizontal bars, left vertical bars and right vertical bars.
摘要翻译：本发明是一种促进视频帧或场中的黑条检测的预处理装置和方法。预处理标记在每条线上间隔预定距离的像素之间的尖锐的不连续性。在首次检测到该不连续性时，存储位置和像素值。位置和像素值也存储在行中的最后一个不连续点。该数据使软件能够检测顶部水平条，底部水平条，左垂直条和右垂直条。

2. 发明授权

US07532257B2 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：US07532257B2
公开(公告)日：2009-05-12
申请号：US11220488
申请日：2005-09-07
申请人： Weider Peter Chang , Karl Hertzian Renner , Shereef Shehata
发明人： Weider Peter Chang , Karl Hertzian Renner , Shereef Shehata
IPC分类号： H04N5/455
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的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。

3. 发明授权

US07468763B2 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：US07468763B2
公开(公告)日：2008-12-23
申请号：US11199661
申请日：2005-08-09
申请人： Feng Ying , Karl Hertzian Renner , Weider Peter Chang , Shereef Shehata , Viet Dinh , Xiaodong Wu , Walter Heinrich Demmer
发明人： Feng Ying , Karl Hertzian Renner , Weider Peter Chang , Shereef Shehata , Viet Dinh , Xiaodong Wu , Walter Heinrich Demmer
IPC分类号： H04N5/60 , H04N5/46
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。

4. 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。

5. 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。

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. 发明申请

US20080062307A1 BAD VIDEO EDIT DETECTION 审中-公开
标题翻译：盲文视频编辑检测
公开(公告)号：US20080062307A1
公开(公告)日：2008-03-13
申请号：US11852220
申请日：2007-09-07
申请人： Fan Zhai , Weider Peter Chang
发明人： Fan Zhai , Weider Peter Chang
IPC分类号： H04N7/01
CPC分类号： H04N7/0112 , H04N7/012 , H04N9/64 , H04N11/20
摘要： Film mode detection with bad edit detection used in de-interlacing video includes use of combing artifact detection in both 3-2 pull down detection and 2-2 pull down detection. Further, combing artifact detection uses only two field memories by accumulation of partial field statistics for comparisons.
摘要翻译：在去隔行视频中使用的具有差的编辑检测的胶片模式检测包括在3-2下拉检测和2-2下拉检测中使用梳状伪影检测。此外，组合伪像检测仅通过用于比较的部分场统计的累积来使用两个场存储器。

8. 发明授权

US06366327B1 Vertical sync detection and output for video decoder 失效
标题翻译：视频解码器的垂直同步检测和输出
公开(公告)号：US06366327B1
公开(公告)日：2002-04-02
申请号：US09126629
申请日：1998-07-30
申请人： Karl H. Renner , Weider Peter Chang
发明人： Karl H. Renner , Weider Peter Chang
IPC分类号： H04N514
CPC分类号： H04N5/46 , H04N5/10
摘要： A technique for detecting three modes of video input signal and outputting a vertical sync signal based on the input signal. In a first mode, a standard video signal is received and a line counter is used to decode and output the vertical sync. In a second mode where a non-standard signal is received, line counter cannot be used, but a vertical sync is detected and output. In a third mode, no video input signal is received, yet a vertical sync is output in free-running mode so that a blank screen is displayed.
摘要翻译：一种用于检测视频输入信号的三种模式并基于输入信号输出垂直同步信号的技术。在第一模式中，接收标准视频信号，并且使用行计数器来解码并输出垂直同步。在接收到非标准信号的第二模式中，不能使用行计数器，而是检测并输出垂直同步信号。在第三模式中，没有接收到视频输入信号，但是以自由运行模式输出垂直同步，从而显示空白屏幕。

9. 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。

10. 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。

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