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公开(公告)号：EP0201227A2
公开(公告)日：1986-11-12
申请号：EP86302844.5
申请日：1986-04-16
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A control signal generator (60) is responsive to the output of a pair of correlation indicators (40, 50). One correlation indicator (40) provides an indication of the presence or absence of correlation between high frequency components derived without difference in delay from the respective luminance and chrominance outputs of a composit color signal comb filter system (11, 3, 15, 19, 21, 27, 17). The other correlation indicator (50) provides an indication of the presence or absence of correlation between high frequency components derived with a difference in delay (52) from the respective comb filter outputs, the delay difference corresponding to a quarter period at the nominal color subcarrier frequency. A control signal (SC) is developed in response to a correlation indication by either or both of the indicators. The luminance output of the comb filter, subjected to high frequency component removal (31) is selected (B, 25) during control signal development.
摘要翻译： 控制信号发生器（60）响应一对相关指示器（40,50）的输出。 一个相关指示符（40）提供在合成彩色信号梳状滤波器系统（11,3,15,19,21）的相应亮度和色度输出之间导出的无差异延迟的高频分量之间存在或不存在相关性的指示 ，27,17）。 另一个相关指示符（50）提供了从相应的梳状滤波器输出与延迟（52）的差异导出的高频分量之间存在或不存在相关性的指示，对应于标称彩色副载波上的四分之一周期的延迟差 频率。 响应于两者或两者之一的相关指示，开发控制信号（SC）。 在控制信号开发期间选择进行高频分量去除（31）的梳状滤波器的亮度输出（B，25）。
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公开(公告)号：EP0200420A3
公开(公告)日：1988-09-07
申请号：EP86302845
申请日：1986-04-16
IPC分类号： H04N09/78
CPC分类号： H04N9/78
摘要： In a color TV receiver, a first digital signal of "m" bits represents a high frequency component of a combed luminance signal, and a second digital signal of "m" bits represents combed chrominance component. The "k" most significant bits of the first signal (where "k" is less than "m") are fed to respective inputs of a first "or" gate (33), while the "j" most significant bits of the second signal (where "j" is less than, or equal to "m") are fed to respective inputs of a second "or" gate (35). The "or" gate outputs are fed, without delay difference, to inputs of a first "and" gate (37), and are fed, with a delay (38) difference of 90° at color subcarrier frequency, to inputs of a second "and" gate (39). Sequence recognition apparatus (50), responsive to the outputs of both "and" gates, develops a correlation indication in response to existence of predetermined sequences of outputs from one or both "and" gates. A control signal former (60), responsive to correlation indication, forms control signal for actuating high frequency component suppression (27,29,31,25) in the receiver's luminance channel to prelude hanging dot display.
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公开(公告)号：EP0218454A3
公开(公告)日：1988-06-08
申请号：EP86307507
申请日：1986-10-01
CPC分类号： H04N9/77
摘要： A video signal processor is disclosed which detects (20) the presence of a complementary-color vertical transition, for instance by detecting that a given line has color information represented by a color vector at a given phase angle, and that the preceding line has color information represented by a color vector at the same phase angle to obtain an indication of the presence of a complementary-color vertical transition. If a complementary-color vertical transition is detected, then the comb filtered luminance and chrominance signals are selectively coupled (30) to the luminance and chrominance processing channels (40, 50) so that the chrominance processing channel (50) receives primarily color information and the color information is excluded from the luminance processing channel (40). This counteracts the adverse effects of the complementary-color vertical transition.
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公开(公告)号：EP0242935A1
公开(公告)日：1987-10-28
申请号：EP87300297.6
申请日：1987-01-14
发明人： Weckenbrock, Hermann Johann , Roeder, Barbara Joan , Casey, Robert Francis , Harwood, Leopold Albert , Wedam, Werner Franz
CPC分类号： H04N5/144
摘要： A motion detector is provided for detecting interimage motion represented by video signals. For composite video signals, the detector analyses both the chrominance and luminance components for image motion. Interimage motion represented by the luminance component is determined from interimage signal differences. The interimage signal differences (10,20) are separated into high (50,22) and low (22) frequency spectra corresponding to fine and coarse luminance image detail. Selected signal differences from the low frequency spectrum are summed (62) and threshold detected (64) to determine motion in the coarse image detail. The high frequency spectrum of the sample differences are applied to parallel summing circuits (72,76,74,78) which sum different combinations of sample differences in order to discriminate (80,82) motion signals from non-moving chrominance transitions. The detection signals from the high and low frequency motion detectors are combined (86) to produce a luminance motion signal.
Interimage motion represented by the chrominance component is detected by combining selected ones of interimage signal sums. The interimage signal sums are high pass filtered and applied to parallel combining elements which discriminate chrominance motion from vertical luminance transitions.摘要翻译： 提供了一种用于检测由视频信号表示的图像间运动的运动检测器。 对于复合视频信号，检测器分析图像运动的色度和亮度分量。 由图像间信号差异确定由亮度分量表示的图像间运动。 图像间信号差（10,20）被分离成对应于精细和粗糙亮度图像细节的高（50,22）和低（22）频谱。 从低频谱中选出的信号差异相加（62）和阈值检测（64）以确定粗略图像细节中的运动。 将样本差的高频谱应用于并行加法电路（72,76,74,78），其对不同的采样差分组合进行求和，以区分（80,82）运动信号与非移动色度转换。 来自高频和低频运动检测器的检测信号被组合（86）以产生亮度运动信号。 通过组合所选择的图像间信号和来检测由色度分量表示的图像间运动。 图像间信号和被高通滤波并应用于将色度运动与垂直亮度转换区分开的并行组合元件。
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公开(公告)号：EP0177285B1
公开(公告)日：1992-02-05
申请号：EP85306872.4
申请日：1985-09-27
CPC分类号： H03H21/0012 , H04N9/646
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公开(公告)号：EP0201227A3
公开(公告)日：1988-08-31
申请号：EP86302844
申请日：1986-04-16
IPC分类号： H04N09/78
CPC分类号： H04N9/78
摘要： A control signal generator (60) is responsive to the output of a pair of correlation indicators (40, 50). One correlation indicator (40) provides an indication of the presence or absence of correlation between high frequency components derived without difference in delay from the respective luminance and chrominance outputs of a composit color signal comb filter system (11, 3, 15, 19, 21, 27, 17). The other correlation indicator (50) provides an indication of the presence or absence of correlation between high frequency components derived with a difference in delay (52) from the respective comb filter outputs, the delay difference corresponding to a quarter period at the nominal color subcarrier frequency. A control signal (SC) is developed in response to a correlation indication by either or both of the indicators. The luminance output of the comb filter, subjected to high frequency component removal (31) is selected (B, 25) during control signal development.
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公开(公告)号：EP0148606A1
公开(公告)日：1985-07-17
申请号：EP84308659.6
申请日：1984-12-13
CPC分类号： H04N9/44
摘要： Trilevel sandcastle pulse decoder includes a trio of voltage comparison means (20, 30, 40) for comparing incoming sandcas- tie pulses with reference potentials (V H , V M , VJ of respectively different levels. One of the voltage comparison means (40) which is subject to change in operating state in response to appearance of a given level of the sandcastle pulse, is precluded from such state change in response to the appearance of the next higher level of the sandcastle pulse by control circuitry (70) responsive to the output of a second (30) of the voltage comparison means. One of the decoder outputs is developed by logic circuitry (80) responsive to outputs of two (20, 30) of the comparison means.
摘要翻译： 三电平沙堡脉冲解码器包括三个电压比较装置（20,30,40），用于比较进入的沙盘脉冲与各自不同电平的参考电位（VH，VM，VJ），电压比较装置（40）之一 响应于沙堡脉冲的给定水平的出现而响应于操作状态的改变，响应于响应于沙堡脉冲的输出的控制电路（70）出现的下一个更高水平的沙堡脉冲而排除这种状态变化 第二个电压比较装置（30），其中一个解码器输出由逻辑电路（80）响应两个比较装置（20,30）的输出而产生。
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公开(公告)号：EP0242935B1
公开(公告)日：1991-09-04
申请号：EP87300297.6
申请日：1987-01-14
发明人： Weckenbrock, Hermann Johann , Roeder, Barbara Joan , Casey, Robert Francis , Harwood, Leopold Albert , Wedam, Werner Franz
CPC分类号： H04N5/144
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