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1.发明授权Filter for separating luminance and chrominance signals from composite color television signal 失效用于从复合彩色电视信号中分离亮度和色度信号的滤波器
公开(公告)号：US4954885A
公开(公告)日：1990-09-04
申请号：US160332
申请日：1988-02-25
申请人： Hiroshi Ito , Tadashi Kasezawa , Masaharu Yao
发明人： Hiroshi Ito , Tadashi Kasezawa , Masaharu Yao
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A filtering circuit separates from the composite color television signal both the luminance and chrominance signals that includes a delay circuit for delaying the composite color video signal. A first filter is also provided which is responsive to the video signal and the delayed video signal and extracts a chrominance signal corresponding to a frequency component of a color subcarrier in a vertical direction. A second filter is used which is responsive to at least the delayed video signal and extracts a chrominance signal corresponding to a frequency component of the color subcarrier in a horizontal direction. Lastly, a third filter is utilized which is responsive to the video signal and the delayed video signal and extracts a chrominance signal corresponding to a frequency component of the color subcarrier in both the vertical and horizontal direction. This filter circuit then determines, in response to the video signal and the delayed video signal, a correlation in a televised picture in the vertical and horizontal directions, respectively. In accordance with this determination, a switching circuit selects one of the chrominance signals extracted, respectively, by the first to third filters as an output.
摘要翻译： 滤波电路与复合彩色电视信号分离亮度和色度信号，包括用于延迟复合彩色视频信号的延迟电路。 还提供了响应于视频信号和延迟的视频信号的第一滤波器，并且提取与垂直方向上的彩色副载波的频率分量相对应的色度信号。 使用第二滤波器，其响应于至少延迟的视频信号，并且在水平方向上提取与彩色副载波的频率分量相对应的色度信号。 最后，使用响应于视频信号和延迟的视频信号的第三滤波器，并且在垂直和水平方向上提取与彩色副载波的频率分量相对应的色度信号。 然后，该滤波器电路响应于视频信号和延迟的视频信号，分别确定电视图像在垂直和水平方向上的相关性。 根据该判断，开关电路分别选择由第一至第三滤波器提取的色度信号之一作为输出。
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2.发明授权Image signal correction circuit and image signal processor using the circuit 失效图像信号校正电路和图像信号处理器采用该电路
公开(公告)号：US5249037A
公开(公告)日：1993-09-28
申请号：US360227
申请日：1989-06-01
申请人： Masato Sugiyama , Isao Nakagawa , Shigeru Hirahata , Toshinori Murata , Ikuya Arai , Kazuhiro Kaizaki , Tadashi Kasezawa , Noriyuki Yamaguchi , Takuzi Kurashita , Masaharu Yao
发明人： Masato Sugiyama , Isao Nakagawa , Shigeru Hirahata , Toshinori Murata , Ikuya Arai , Kazuhiro Kaizaki , Tadashi Kasezawa , Noriyuki Yamaguchi , Takuzi Kurashita , Masaharu Yao
摘要： In a motion-adaptive television signal processor, a field as a reference for a moving picture signal includes a signal delayed by a frame memory or a field memory. A non-standard signal is beforehand processed so as to separate Y and C signals, and the signal thus processed is input to a motion-adaptive processor to thereby reduce a deviation in center of gravity between a still picture signal and a moving picture signal on the timebase to thereby suppress unnatural motion of the picture.
摘要翻译： 在运动自适应电视信号处理器中，作为运动图像信号的参考的场包括由帧存储器或场存储器延迟的信号。 预先对非标准信号进行处理，以分离Y和C信号，将这样处理的信号输入到运动自适应处理器，从而减少静止图像信号和运动图像信号之间的重心偏差 时基，从而抑制图片的不自然的运动。
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3.发明授权Motion detecting circuit for video signal processing using correlation techniques 失效使用相关技术的视频信号处理运动检测电路
公开(公告)号：US4924305A
公开(公告)日：1990-05-08
申请号：US365315
申请日：1989-06-13
申请人： Isao Nakagawa , Sadao Kubota , Toru Suzaki , Toshimitsu Ozawa , Masaharu Yao , Hiroshi Ito , Yoshiteru Suzuki , Tatsuo Shibata
发明人： Isao Nakagawa , Sadao Kubota , Toru Suzaki , Toshimitsu Ozawa , Masaharu Yao , Hiroshi Ito , Yoshiteru Suzuki , Tatsuo Shibata
摘要： A motion detecting circuit is used for a motion-adapted scanning line interpolating circuit in a television system. The motion detecting circuit comprises an inter-frame correlation detecting circuit for detecting and outputting the value of correlation of video signals between adjacent frames, an inter-field correlation detecting circuit for detecting and outputting the value of correlation of signals of corresponding pixels between adjacent fields and an adjusting circuit for adjusting the output of the inter-frame correlation detecting circuit in accordance with the correlation value outputted from the inter-field correlation detecting circuit. An interlace/non-interlace signal converting circuit is also provided with the motion detecting circuit.
摘要翻译： 运动检测电路用于电视系统中的运动适应的扫描线内插电路。 运动检测电路包括帧间相关检测电路，用于检测并输出相邻帧之间的视频信号的相关值;场间相关检测电路，用于检测并输出相邻场之间相应像素信号的相关值 以及调整电路，用于根据从场间相关检测电路输出的相关值来调整帧间相关检测电路的输出。 交错/非隔行信号转换电路还具有运动检测电路。
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公开(公告)号：US5475445A
公开(公告)日：1995-12-12
申请号：US279894
申请日：1994-07-25
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A filter is used for separating luminance and color signals from a composite color television signal in which the frequency of the color signal is multiplexed over the high-frequency region of the luminance signal. When a picture is detected with respect to its motion under frame correlation, and if that motion is relatively small, the separation of luminance and color signals is performed based on interframe correlation. If the motion is relatively large, the separation of luminance and color signals is made based on interfield correlation. The luminance and color signal separation based on the interfield correlation is attained from a correlation with signals in fields spaced forwardly and rearwardly away from the subject field by one field. This is accomplished by selecting a calculation having the highest among a plurality of calculations for an objective sample point and a plurality of sample points located about the objective sample point. Such a correlation is determined by checking the correlation of image signals in the set of sample points which are spaced apart from one another by one frame and located around the objective sample point.
摘要翻译： 滤波器用于从彩色信号的频率在亮度信号的高频区域上复用的复合彩色电视信号中分离亮度和颜色信号。 当检测到相对于其在帧相关下的运动的图像时，如果该运动相对较小，则基于帧间相关性执行亮度和颜色信号的分离。 如果运动相对较大，则基于场间相关性来进行亮度和色彩信号的分离。 基于场间相关性的亮度和颜色信号分离是从与被摄体场向前和向后隔开一个场的场中的信号的相关性获得的。 这是通过在客观采样点的多个计算中选择具有最高的计算和围绕客观采样点定位的多个采样点来实现的。 这样的相关性通过检查彼此间隔开一帧并且位于物镜采样点周围的采样点集合中的图像信号的相关性来确定。
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5.发明授权
公开(公告)号：US5500686A
公开(公告)日：1996-03-19
申请号：US255797
申请日：1994-06-07
CPC分类号： H04N9/78
摘要： A filter for motion adaptive Y/C separation, which is capable of obtaining image of high resolution and little picture quality degradation in the case where an image is switched from static one to motion one or vice-versa, is provided with a filter for extracting Y signal outputting Y signal and a filter for extracting C signal outputting C signal, by detecting whether image is motion one or static one by a motion detecting unit, and when motion image is detected, by detecting partially interframe correlation or correlation in three fields, and according to the detection result, by adaptively switching a plurality of processings for extracting intraframe Y signal and a plurality of processings for extracting intraframe C signal.
摘要翻译： 一种用于运动自适应Y / C分离的滤波器，其提供了一种用于提取的滤波器，该滤波器能够在图像从静态切换到运动自适应Y / C分离的情况下获得高分辨率和小图像质量劣化的图像 Y信号输出Y信号和滤波器，用于提取C信号输出C信号，通过检测图像是运动检测单元是运动图像还是静态图像，并且当检测到运动图像时，通过检测三个场中的部分帧间相关性或相关性， 并且根据检测结果，通过自适应地切换用于提取帧内Y信号的多个处理和用于提取帧内C信号的多个处理。
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公开(公告)号：US5381183A
公开(公告)日：1995-01-10
申请号：US79509
申请日：1993-06-21
申请人： Mitsuru Ishizuka , Noriyuki Yamaguchi , Hitoshi Hasegawa , Masaharu Yao , Hiroshi Ohnishi , Yuuzi Yamamoto , Masayuki Tuzi
发明人： Mitsuru Ishizuka , Noriyuki Yamaguchi , Hitoshi Hasegawa , Masaharu Yao , Hiroshi Ohnishi , Yuuzi Yamamoto , Masayuki Tuzi
CPC分类号： H04N7/014 , H04N7/012 , H04N7/0122 , H04N7/0135
摘要： A motion-adaptive scanning-line conversion circuit which converts part or the entirety of a first video signal into a second video signal. The circuit includes a data reducing circuit, such as a low pass filter and a decimator, which lowers the sampling frequency of the first video signal to reduce the amount of data in the first video signal. The conversion circuit can also include a detection circuit which detects the vertical edge of a stationary part of a picture represented by the reduced first video signal, and a motion detection circuit which determines the amount of motion of the pixels in the reduced first video signal. Based upon the detection of a vertical edge, a selection circuit selects between an output of an inter-field scanning-line conversion circuit and an intra-field scanning-line conversion circuit operating on the reduced first video signal and the first video signal, respectively.
摘要翻译： 一种将第一视频信号的部分或全部转换为第二视频信号的运动自适应扫描线转换电路。 该电路包括诸如低通滤波器和抽取器的数据降低电路，其降低第一视频信号的采样频率以减少第一视频信号中的数据量。 转换电路还可以包括检测电路，其检测由缩小的第一视频信号表示的图像的静止部分的垂直边缘，以及运动检测电路，其确定缩小的第一视频信号中的像素的运动量。 基于垂直边缘的检测，选择电路分别在场内扫描线转换电路的输出和对减小的第一视频信号和第一视频信号上工作的场内扫描线转换电路之间进行选择 。
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7.发明授权Luminance and chrominance signals separating filter adaptive to movement of image 失效亮度和色度信号分离过滤器适应图像的运动
公开(公告)号：US5585861A
公开(公告)日：1996-12-17
申请号：US344640
申请日：1994-11-09
CPC分类号： H04N9/78
摘要： A luminance (Y) and chrominance (C) signals separating filter includes a motion detecting circuit which partially detects a movement of an image utilizing a correlation between frames; an inter-frame YC separating circuit which performs a separation utilizing the inter-frame correlation when the motion detecting circuit detects a still image, and outputs intra-frame YC separated C signals and intra-frame YC separated Y signals; an intra-frame YC separating circuit which partially detects a correlation between fields or between frames and a correlation in a field when the motion detecting circuit detects a moving image, performs a separation utilizing the correlations, and outputs intra-frame YC separated C signals and intra-frame YC separated Y signals; a C signal mixing circuit which mixes the inter-frame YC separated C signals and the intra-frame YC separated C signals in accordance with an output of the motion detecting circuit and outputs motion adaptive YC separated C signals; and a Y signal mixing circuit which mixes the inter-frame YC separated Y signals and the intra-frame YC separated Y signals in accordance with the output of the motion detecting circuit and outputs motion adaptive YC separated Y signals.
摘要翻译： 亮度（Y）和色度（C）信号分离滤波器包括运动检测电路，其利用帧之间的相关性部分地检测图像的移动; 帧间YC分离电路，当运动检测电路检测到静止图像时，利用帧间相关性进行分离，并输出帧内YC分离的C信号和帧内YC分离的Y信号; 帧内YC分离电路，当运动检测电路检测到运动图像时，部分地检测场之间或帧之间的相关性以及场中的相关性，利用相关性进行分离，并输出帧内YC分离的C信号和 帧内YC分离Y信号; C信号混合电路，其根据运动检测电路的输出混合帧间YC分离C信号和帧内YC分离C信号，并输出运动自适应YC分离C信号; Y信号混合电路根据运动检测电路的输出混合帧间YC分离的Y信号和帧内YC分离的Y信号，并输出运动自适应YC分离的Y信号。
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8.发明授权Luminance and chrominance signals separating filter adaptive to movement of image 失效亮度和色度信号分离过滤器适应图像的运动
公开(公告)号：US5412434A
公开(公告)日：1995-05-02
申请号：US850488
申请日：1992-03-12
CPC分类号： H04N9/78
摘要： A luminance (Y) and chrominance (C) signals separating filter includes a movement detecting circuit which partially detects a movement of an image utilizing a correlation between frames; an inter-frame YC separating circuit which performs a separation utilizing the inter-frame correlation when the movement detecting circuit detects a still image, and outputs intra-frame YC separated C signals and intra-frame YC separated Y signals; an intra-frame YC separating circuit which partially detects a correlation between fields or between frames and a correlation in a field when the movement detecting circuit detects a moving image, performs a separation utilizing the correlations, and outputs intra-frame YC separated C signals and intra-frame YC separated Y signals; a C signal mixing circuit which mixes the inter-frame YC separated C signals and the intra-frame YC separated C signals in accordance with an output of the movement detecting circuit and outputs movement adaptive YC separated C signals; and a Y signal mixing circuit which mixes the inter-frame YC separated Y signals and the intra-frame YC separated Y signals in accordance with the output of the movement detecting circuit and outputs movement adaptive YC separated Y signals.
摘要翻译： 亮度（Y）和色度（C）信号分离滤波器包括移动检测电路，其利用帧之间的相关性部分地检测图像的移动; 帧间YC分离电路，当移动检测电路检测到静止图像时，利用帧间相关性进行分离，并输出帧内YC分离的C信号和帧内YC分离的Y信号; 帧内YC分离电路，当运动检测电路检测到运动图像时，部分地检测场之间或帧之间的相关性以及场中的相关性，利用相关性进行分离，并输出帧内YC分离的C信号和 帧内YC分离Y信号; C信号混合电路，根据移动检测电路的输出混合帧间YC分离C信号和帧内YC分离C信号，并输出移动自适应YC分离C信号; Y信号混合电路根据移动检测电路的输出混合帧间YC分离的Y信号和帧内YC分离的Y信号，输出运动自适应YC分离的Y信号。
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公开(公告)号：US5541669A
公开(公告)日：1996-07-30
申请号：US387632
申请日：1995-02-13
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A filter is used for separating luminance and color signals from a composite color television signal in which the frequency of the color signal is multiplexed over the high-frequency region of the luminance signal. When a picture is detected with respect to its motion under frame correlation and if that motion is relatively small, the separation of luminance and color signals is performed based on the interframe correlation. If the motion is relatively large, the separation of luminance and color signals is made based on the interfield correlation. The luminance and color signal separation based on the interfield correlation is attained from a correlation with signals in a field spaced forwardly away from the subject field by one field. This is accomplished by selecting a calculation having the highest correlation in calculations for an objective sample point and a plurality of sample points located about the objective sample point. Such a correlation is determined by checking the correlation of image signals in the set of sample points which are spaced apart from one another by one frame and located around the objective sample point.
摘要翻译： 滤波器用于从彩色信号的频率在亮度信号的高频区域上复用的复合彩色电视信号中分离亮度和颜色信号。 当相对于帧相关下的运动检测到图像时，如果该运动相对较小，则基于帧间相关性执行亮度和颜色信号的分离。 如果运动相对较大，则基于场间相关性来进行亮度和色彩信号的分离。 基于场间相关性的亮度和颜色信号分离是从与目标场间隔开一个场的场中的信号的相关性获得的。 这通过选择在客观采样点的计算中具有最高相关性的计算和围绕客观采样点定位的多个采样点来实现。 这样的相关性通过检查彼此间隔开一帧并且位于物镜采样点周围的采样点集合中的图像信号的相关性来确定。
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10.发明授权Chrominance-luminance separation method and filter performing selective spatial filter based on detected spatial correlation 失效色度 - 亮度分离方法和滤波器基于检测到的空间相关性执行选择性空间滤波
公开(公告)号：US5502509A
公开(公告)日：1996-03-26
申请号：US263198
申请日：1994-06-21
申请人： Takuji Kurashita , Noriyuki Yamaguchi , Mitsuru Ishizuka , Junko Kijima , Hitoshi Hasegawa , Masaharu Yao
发明人： Takuji Kurashita , Noriyuki Yamaguchi , Mitsuru Ishizuka , Junko Kijima , Hitoshi Hasegawa , Masaharu Yao
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： Motion-adaptive chrominance-luminance separation of a composite video signal is accomplished by comb-filtering the video signal on the time axis, bandpass-filtering the video signal on at least one spatial axis selected according to spatial correlation detected in the video signal, and combining the two filtered results in proportion to motion detected in the video signal. Motion is detected in part by obtaining a one-frame difference signal that has been filtered to eliminate chrominance information; here too the filtering is performed on at least one spatial axis selected according to spatial correlation. Selecting the spatial filtering axes according to spatial correlation enables chrominance and luminance to be separated effectively without unnecessary information loss.
摘要翻译： 复合视频信号的运动自适应色度 - 亮度分离是通过对时间轴上的视频信号进行梳状滤波来对在视频信号中检测到的空间相关性所选择的至少一个空间轴上的视频信号进行带通滤波来实现的，以及 将两个滤波结果与视频信号中检测到的运动成比例地组合。 通过获得已被滤波以消除色度信息的一帧差分信号，部分地检测运动; 这里也根据空间相关性选择的至少一个空间轴进行滤波。 根据空间相关性选择空间滤波轴可以实现色度和亮度的有效分离，无需不必要的信息丢失。
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