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1. 发明公开

EP0464879A3 Apparatus for separating luminance and chrominance signals and the method thereof 失效
标题翻译：用于分离发光和色度信号的装置及其方法
公开(公告)号：EP0464879A3
公开(公告)日：1993-06-09
申请号：EP91201213.5
申请日：1991-05-22
申请人： SAMSUNG ELECTRONICS CO. LTD.
发明人： Sim, Dae-yun , Jeong, Jun-mo
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： Disclosed are an apparatus for separating a composite video signal into luminance and chrominance signals and the method thereof. There is provided a chrominance signal separating circuit which comprises: a narrow band pass filter and a wide band pass filter for receiving a primarily comb-filtered composite video signals, respectively; two level detectors for detecting a degree of color change which is a difference between chrominance signals outputted from the band pass filters, respectively, and an amplitude of the chrominance signal outputted from the wide band pass filter, respectively; two coefficient generators for generating respective coefficients corresponding to the values detected from the level detectors; and two multipliers and an adder, for processing respective predetermined interval delayed signals, i.e., the delayed transition chrominance signal and a delayed output signal of the narrow band pass filter, and the coefficients outputted from the coefficient generators. Accordingly, the comb-filtered composite video signal is filtered by changing the bandwidth according to an amplitude of chrominance signal and a degree of color change, thereby minimizing the obstacle factors causing deterioration of the picture quality so as to provide an improved picture.

2. 发明授权

EP0464879B1 Apparatus for separating luminance and chrominance signals and the method thereof 失效
标题翻译：用于分离亮度和色度信号和方法的装置
公开(公告)号：EP0464879B1
公开(公告)日：1997-11-26
申请号：EP91201213.5
申请日：1991-05-22
申请人： SAMSUNG ELECTRONICS CO. LTD.
发明人： Sim, Dae-yun , Jeong, Jun-mo
IPC分类号： H04N9/78
CPC分类号： H04N9/78

3. 发明公开

EP0464879A2 Apparatus for separating luminance and chrominance signals and the method thereof 失效
标题翻译： Vorrichtung zur Trennung des Luminanzsignals und des Chrominanzsignals und Verfahren。
公开(公告)号：EP0464879A2
公开(公告)日：1992-01-08
申请号：EP91201213.5
申请日：1991-05-22
申请人： SAMSUNG ELECTRONICS CO. LTD.
发明人： Sim, Dae-yun , Jeong, Jun-mo
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： Disclosed are an apparatus for separating a composite video signal into luminance and chrominance signals and the method thereof. There is provided a chrominance signal separating circuit which comprises: a narrow band pass filter and a wide band pass filter for receiving a primarily comb-filtered composite video signals, respectively; two level detectors for detecting a degree of color change which is a difference between chrominance signals outputted from the band pass filters, respectively, and an amplitude of the chrominance signal outputted from the wide band pass filter, respectively; two coefficient generators for generating respective coefficients corresponding to the values detected from the level detectors; and two multipliers and an adder, for processing respective predetermined interval delayed signals, i.e., the delayed transition chrominance signal and a delayed output signal of the narrow band pass filter, and the coefficients outputted from the coefficient generators. Accordingly, the comb-filtered composite video signal is filtered by changing the bandwidth according to an amplitude of chrominance signal and a degree of color change, thereby minimizing the obstacle factors causing deterioration of the picture quality so as to provide an improved picture.
摘要翻译：公开了一种将复合视频信号分离为亮度和色度信号的装置及其方法。提供了一种色度信号分离电路，其包括：窄带通滤波器和宽带通滤波器，用于分别接收主要梳状滤波的复合视频信号; 分别检测作为从带通滤波器输出的色度信号之间的差异的颜色变化程度和从宽带通滤波器输出的色度信号的振幅的两电平检测器; 两个系数发生器，用于产生对应于从电平检测器检测的值的各个系数; 以及两个乘法器和加法器，用于处理相应的预定间隔延迟信号，即延迟转换色度信号和窄带通滤波器的延迟输出信号，以及从系数发生器输出的系数。因此，梳状滤波的复合视频信号通过根据色度信号的幅度和颜色变化的程度改变带宽进行滤波，从而最小化导致图像质量劣化的障碍因素，从而提供改进的图像。

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