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1. 发明申请

US20050018080A1 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：US20050018080A1
公开(公告)日：2005-01-27
申请号：US10623232
申请日：2003-07-18
申请人： Karl Renner , Walter Demmer , Jason Meiners
发明人： Karl Renner , Walter Demmer , Jason Meiners
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。

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

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。

5. 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。

6. 发明授权

US06943847B2 FM demodulator for SECAM decoder 有权
标题翻译： FM解调器用于SECAM解码器
公开(公告)号：US06943847B2
公开(公告)日：2005-09-13
申请号：US10229717
申请日：2002-08-28
申请人： Karl Renner , Walter Demmer
发明人： Karl Renner , Walter Demmer
IPC分类号： H04N9/66 , H04N11/18 , H04N5/455
CPC分类号： H04N9/66 , H04N11/186
摘要： A SECAM decoder and an FM modulator therefor are disclosed, in which a demodulated color signal is provided to indicate deviations in the frequency of modulated color information from a nominal subcarrier frequency. The demodulator comprises numerator and denominator filters operating on the modulated color information, and a divider providing a ratio result by dividing the numerator filter output by the denominator filter output. The demodulator may include two sets of numerator and denominator filters offset in phase from one another, where one of the two sets is selectively employed in order to mitigate divide-by-zero problems. Also disclosed are methods for demodulating digitized FM color signals in a SECAM decoder.
摘要翻译：公开了一种SECAM解码器及其FM调制器，其中提供解调的彩色信号以指示调制的颜色信息的频率与标称副载波频率的偏差。解调器包括对调制的色彩信息进行操作的分子和分母滤波器，以及通过用分母滤波器输出除以分子滤波器输出而提供比例结果的分频器。解调器可以包括两组相互偏移的分子和分母滤波器，其中选择性地使用两组中的一组来减轻除零问题。还公开了在SECAM解码器中解调数字化FM彩色信号的方法。

7. 发明申请

US20050007493A1 Equilibrium based vertical sync phase lock loop for video decoder 有权
标题翻译：用于视频解码器的基于平衡的垂直同步锁相环
公开(公告)号：US20050007493A1
公开(公告)日：2005-01-13
申请号：US10713714
申请日：2003-11-14
申请人： Karl Renner , Walter Demmer
发明人： Karl Renner , Walter Demmer
IPC分类号： H03L7/00 , H03L7/099 , H04N5/12
CPC分类号： H03L7/0991 , H04N5/126
摘要： The present invention discloses a PLL (90), which may be implemented in software, hardware, or a combination of software and hardware, which comprises a sync detector (92) adapted to output a phase error (152), a vertical sync discrete time oscillator (DTO) block (98) adapted to output a vertical sync DTO (130) based on the phase error (152), and an output logic (100) adapted to detect a vertical sync based on the vertical sync DTO (130).
摘要翻译：本发明公开了一种PLL（90），其可以以软件，硬件或软件和硬件的组合来实现，其包括适于输出相位误差（152）的同步检测器（92），垂直同步离散时间适于基于相位误差（152）输出垂直同步DTO（130）的振荡器（DTO）块（98），以及适于基于垂直同步DTO检测垂直同步的输出逻辑（130）（130）。

8. 发明申请

US20050007492A1 Equilibrium based vertical sync phase lock loop for video decoder 有权
标题翻译：用于视频解码器的基于平衡的垂直同步锁相环
公开(公告)号：US20050007492A1
公开(公告)日：2005-01-13
申请号：US10616754
申请日：2003-07-10
申请人： Karl Renner , Walter Demmer
发明人： Karl Renner , Walter Demmer
IPC分类号： H03L7/00 , H03L7/099 , H04N5/12
CPC分类号： H04N5/126 , H03L7/0991
摘要： The present invention discloses a PLL (90), which may be implemented in software, hardware, or a combination of software and hardware, which comprises a sync detector (92), a loop filter (94), a vertical sync discrete time oscillator (DTO) (98), and an output logic (100) adapted to detect a vertical sync (222), wherein the loop filter (94), the vertical sync DTO (98), and the output logic (100) are coupled to the sync detector (92).
摘要翻译：本发明公开了一种PLL（90），其可以以软件，硬件或软件和硬件的组合来实现，其包括同步检测器（92），环路滤波器（94），垂直同步离散时间振荡器 DTO）（98）和适于检测垂直同步（222）的输出逻辑（100），其中环路滤波器（94），垂直同步DTO（98）和输出逻辑（100）耦合到同步检测器（92）。

9. 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。

10. 发明授权

US06912012B2 Video decoder having lock algorithm that distinguishes between a noisy television signal input and a video recorder signal 有权
标题翻译：视频解码器具有用于区分噪声电视信号输入和录像机信号的锁定算法
公开(公告)号：US06912012B2
公开(公告)日：2005-06-28
申请号：US10196499
申请日：2002-07-16
申请人： Karl Renner , Walter Demmer
发明人： Karl Renner , Walter Demmer
IPC分类号： H03L7/081 , H03L7/087 , H03L7/091 , H04N5/12 , H04N5/46 , H04N9/64 , H04N5/04 , H04N5/05 , H04N9/44
CPC分类号： H04N5/126 , H03L7/0814 , H03L7/087 , H03L7/091 , H04N5/46 , H04N9/641
摘要： A phase-locked loop is provided which is operable to lock the sampling clock (pixel clock) to the incoming horizontal sync pulse contained within composite video information. Given the input signal is a VCR signal or a normal noise-free signal, there exists two modes of operation, coarse lock mode and fine lock mode, which are used in controlling the phase-locked loop. In the coarse lock mode, coarse corrections are made to a horizontal discrete time oscillator so that a fast lock may be achieve using the fine lock mode. Coarse corrections are based on a normalized sum of weighted pixels collected within a narrow gate window. Lock is achieved when the falling edge is centered within the window. Given the input signal is a television signal having noise, there exists one mode of operation where the flat window phase detector is used instead of coarse lock mode to bring the sync edge to fall within the window, where the flat window normalization constant is tuned.
摘要翻译：提供锁相环，其可操作以将采样时钟（像素时钟）锁定到包含在复合视频信息内的输入水平同步脉冲。给定输入信号是VCR信号或正常无噪声信号，存在两种操作模式，粗锁模式和精密锁定模式，用于控制锁相环。在粗略锁定模式下，对水平离散时间振荡器进行粗略校正，以便可以使用精细锁定模式实现快速锁定。粗校正基于在窄门窗内收集的加权像素的归一化和。当下降边缘在窗口中央时，实现锁定。给定输入信号是具有噪声的电视信号，存在一种操作模式，其中使用平面窗口相位检测器而不是粗略锁定模式以使同步边缘落入窗口内，其中调整平面窗口归一化常数。

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