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1.发明授权Detection circuit for detecting standard television signals and nonstandard television signals 失效用于检测标准电视信号和非标准电视信号的检测电路
公开(公告)号：US4821112A
公开(公告)日：1989-04-11
申请号：US63477
申请日：1987-06-18
申请人： Toshiyuki Sakamoto , Ikuya Arai , Toshiyuki Kurita , Toshinori Murata , Isao Nakagawa , Masahiko Achiha , Kazuo Ishikura
发明人： Toshiyuki Sakamoto , Ikuya Arai , Toshiyuki Kurita , Toshinori Murata , Isao Nakagawa , Masahiko Achiha , Kazuo Ishikura
CPC分类号： H04N9/641
摘要： There is provided a detection circuit for TV receiver which includes a frame comb filter and a field comb filter and which generates a luminance signal or a chrominance signal by effecting addition or subtraction upon video signals of two frames adjoining each other included in the received TV signal. This detection circuit includes a synchronization separation circuit, an APC circuit, a frequency division circuit connected to the APC circuit, and a comparator circuit connected to the frequency division circuit. The frequency of the chrominance subcarrier signal is demultiplied by the frequency division circuit. The phase of the chrominance subcarrier signal thus frequency-divided is compared with the phase of the synchronizing signal separated by the synchronizing separation circuit. It is thus judged whether the received TV signal is a standard TV signal or a nonstandard TV signal.
摘要翻译： 提供了一种用于TV接收机的检测电路，其包括帧梳状滤波器和场梳状滤波器，并且通过对包含在所接收的TV信号中的彼此相邻的两个帧的视频信号进行加法或减法而产生亮度信号或色度信号 。 该检测电路包括同步分离电路，APC电路，连接到APC电路的分频电路，以及连接到分频电路的比较电路。 色差副载波信号的频率由分频电路分频。 将这样分频的色度副载波信号的相位与由同步分离电路分离的同步信号的相位进行比较。 因此判断所接收的TV信号是标准TV信号还是非标准TV信号。
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2.发明授权Digital signal processing circuit driven by a switched clock and used in television receiver for processing standard and nonstandard television signals 失效由切换时钟驱动的数字信号处理电路，用于电视接收机处理标准和非标准电视信号
公开(公告)号：US4860090A
公开(公告)日：1989-08-22
申请号：US164914
申请日：1988-03-07
申请人： Toshinori Murata , Ikuya Arai , Toshiyuki Kurita , Isao Nakagawa
发明人： Toshinori Murata , Ikuya Arai , Toshiyuki Kurita , Isao Nakagawa
CPC分类号： H04N9/641
摘要： A digital television receiver includes a decision circuit for deciding whether an input television signal is a standard signal or a nonstandard signal. A first clock signal generator circuit for generating a first sampling clock signal synchronized with a color burst signal is provided in combination with a second clock signal generator circuit for generating a second sampling clock signal synchronized with a horizontal synchronizing signal. When the standard television signal is received, the television signal is processed by employing the first sampling clock signal. When the nonstandard television signal is received, the television signal is processed by employing the second sampling clock signal.
摘要翻译： 数字电视接收机包括用于判定输入电视信号是标准信号还是非标准信号的判定电路。 与用于产生与水平同步信号同步的第二采样时钟信号的第二时钟信号发生器电路组合地提供用于产生与色同步信号同步的第一采样时钟信号的第一时钟信号发生器电路。 当接收到标准电视信号时，通过采用第一采样时钟信号来处理电视信号。 当接收到非标准电视信号时，通过采用第二采样时钟信号来处理电视信号。
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3.发明授权
公开(公告)号：US4794454A
公开(公告)日：1988-12-27
申请号：US105013
申请日：1987-10-06
申请人： Masato Sugiyama , Kenji Katsumata , Shigeru Hirahata , Isao Nakagawa , Sunao Suzuki , Masahiko Achiha , Kazuo Ishikura
发明人： Masato Sugiyama , Kenji Katsumata , Shigeru Hirahata , Isao Nakagawa , Sunao Suzuki , Masahiko Achiha , Kazuo Ishikura
CPC分类号： H04N9/646
摘要： A movement detection circuit for detecting movement information of a luminance signal and movement information of a chrominance signal of a television signal comprises a first movement detection circuit for detecting the movement information of the luminance signal and a second movement detection circuit for detecting the movement information of the chrominance signal. The first movement detection circuit detects the movement information of the luminance signal based on two signals spaced by one frame period, and the second movement detection circuit detects the movement information of the chrominance signal based on two signals spaced by two frames periods.
摘要翻译： 用于检测亮度信号的运动信息和电视信号的色度信号的移动信息的移动检测电路包括：用于检测亮度信号的移动信息的第一移动检测电路和用于检测亮度信号的运动信息的第二移动检测电路， 色度信号。 第一移动检测电路基于间隔一帧周期的两个信号来检测亮度信号的移动信息，第二移动检测电路基于间隔两帧周期的两个信号来检测色度信号的移动信息。
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公开(公告)号：US4739390A
公开(公告)日：1988-04-19
申请号：US895841
申请日：1986-08-12
申请人： Masahiko Achiha , Isao Nakagawa , Kazuo Ishikura , Shobu Saito
发明人： Masahiko Achiha , Isao Nakagawa , Kazuo Ishikura , Shobu Saito
摘要： A television signal processing circuit which separates a television signal into a luminance signal and a chrominance signal or interpolates the scanning lines of the television signal by using a video memory such as a frame memory or a field memory. The circuit determines whether the television signal to be treated is a standard television signal or a non-standard television signal. Depending upon this determination, the signal processing circuit changes its operation mode so that it operates properly even in case the television signal is different from the standard television signal and contains jitter in the time axis like the signal from a VTR. When the television signal is a non-standard television signal, the processing circuit without the video memory operates.
摘要翻译： 一种电视信号处理电路，其通过使用诸如帧存储器或场存储器的视频存储器将电视信号分离成亮度信号和色度信号或内插电视信号的扫描线。 该电路确定待处理的电视信号是标准电视信号还是非标准电视信号。 根据该判断，信号处理电路改变其操作模式，使其即使在电视信号与标准电视信号不同的情况下也能正常工作，并且包含时间轴上的抖动，如来自VTR的信号。 当电视信号是非标准电视信号时，没有视频存储器的处理电路运行。
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公开(公告)号：US4736252A
公开(公告)日：1988-04-05
申请号：US932376
申请日：1986-11-20
申请人： Isao Nakagawa , Masahiko Achiha , Masato Sugiyama , Kenji Katsumata , Toshinori Murata , Shigeru Hirahata , Akihide Okuda
发明人： Isao Nakagawa , Masahiko Achiha , Masato Sugiyama , Kenji Katsumata , Toshinori Murata , Shigeru Hirahata , Akihide Okuda
CPC分类号： H04N5/144
摘要： A motion detector for a chrominance signal which is used with a TV receiver equipped with a video signal motion detector. This motion detector for a chrominance signal has a delay element for delaying the chrominance signal of a video signal by 1 frame period, a subtractor for subtracting the output signal of the delay element from the input signal thereof, an absolute value conversion circuit to which the output signal from the subtractor is inputted, and a smoother circuit to which the output signal from the absolute value conversion circuit is supplied. If the chrominance signals of video signals on two consecutive frames are the same, the output signal of the subtractor becomes zero. If the chrominance signals of video signals on two consecutive frames are different, the output signal of the substractor takes a positive or negative value. The negative value signal is converted into a positive value signal by the absolute value conversion circuit. A signal is outputted from the smoother circuit only when the chrominance signals of video signals on two consecutive frames are different. This outputted signal is a chrominance signal motion detection signal. The luminance signal contained in a video signal is removed from the video signal using a comb-type filter.
摘要翻译： 用于与配备有视频信号运动检测器的TV接收机一起使用的色度信号的运动检测器。 用于色度信号的运动检测器具有用于将视频信号的色度信号延迟1帧周期的延迟元件，用于从其输入信号中减去延迟元件的输出信号的减法器，绝对值转换电路， 输入来自减法器的输出信号，并且提供来自绝对值转换电路的输出信号的平滑电路。 如果两个连续帧上的视频信号的色度信号相同，则减法器的输出信号变为零。 如果两个连续帧上的视频信号的色度信号不同，则减法器的输出信号为正或负值。 负值信号由绝对值转换电路转换为正值信号。 仅当两个连续帧上的视频信号的色度信号不同时才从平滑电路输出信号。 该输出信号是色度信号运动检测信号。 使用梳状滤波器从视频信号中去除包含在视频信号中的亮度信号。
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公开(公告)号：US4775888A
公开(公告)日：1988-10-04
申请号：US143336
申请日：1988-01-13
申请人： Isao Nakagawa , Masahiko Achiha , Masato Sugiyama , Kenji Katsumata , Toshinori Murata , Shigeru Hirahata , Akihide Okuda
发明人： Isao Nakagawa , Masahiko Achiha , Masato Sugiyama , Kenji Katsumata , Toshinori Murata , Shigeru Hirahata , Akihide Okuda
CPC分类号： H04N5/144
摘要： A motion detector for a chrominance signal which is used with a TV receiver equipped with a video signal motion detector. This motion detector for a chrominance signal has a delay element for delaying the chrominance signal of a video signal by 1 frame period, a subtracter for subtracting the output signal of the delay element from the input signal thereof, an absolute value conversion circuit to which the output signal from the subtracter is inputted, and a smoother circuit to which the output signal from the absolute value conversion circuit is supplied. If the chrominance signal of video signals on two consecutive frames are the same, the output signal of the subtracter becomes zero. If the chrominance signals of video signals on two consecutive frames are different, the output signal of the subtracter takes a positive or negative value. The negative value signal is converted into a positive value signal by the absolute value conversion circuit. A signal is outputted from the smoother circuit only when the chrominance signals of video signals on two consecutive frames are different. This outputted signal is a chrominance signal motion detection signal.The luminance signal contained in a video signal is removed from the video signal using a comb-type filter.
摘要翻译： 用于与配备有视频信号运动检测器的TV接收机一起使用的色度信号的运动检测器。 用于色度信号的运动检测器具有用于将视频信号的色度信号延迟1帧周期的延迟元件，用于从其输入信号中减去延迟元件的输出信号的减法器，绝对值转换电路， 输入来自减法器的输出信号，并且提供来自绝对值转换电路的输出信号的平滑电路。 如果两个连续帧上的视频信号的色度信号相同，则减法器的输出信号变为零。 如果两个连续帧上的视频信号的色度信号不同，则减法器的输出信号取正值或负值。 负值信号由绝对值转换电路转换为正值信号。 仅当两个连续帧上的视频信号的色度信号不同时才从平滑电路输出信号。 该输出信号是色度信号运动检测信号。 使用梳状滤波器从视频信号中去除包含在视频信号中的亮度信号。
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7.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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8.发明授权Separating circuit of luminance and chrominance signals for TV receiver selecting between three three line comb filters 失效电视接收机的亮度和色度信号分离电路在三个三线梳状滤波器之间进行选择
公开(公告)号：US4707732A
公开(公告)日：1987-11-17
申请号：US918037
申请日：1986-10-14
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： A circuit for separating a luminance signal and a chrominance signal having the first, second, third, and fourth 1H delay lines each connected in series, a first comb filter including the first and second 1H delay lines, a second comb filter including the second and third 1H delay lines, a third comb filter including the third and fourth 1H delay lines, a first subtraction circuit for achieving a subtraction on an input signal to the first 1H delay line and an output signal from the second 1H delay line, a second subtraction circuit for achieving a subtraction on an input signal to the second 1H delay line and an output signal from the third 1H delay line, a third subtraction circuit for achieving a subtraction on an input signal to the third 1H delay line and an output signal from the fourth 1H delay line, and a minimum value detecting circuit connected to the first, second, and third subtraction circuits for detecting the minimum value from the subtraction results. This circuit selects by use of a switch an output signal from the comb filter for which the minimum subtraction result is detected by the minimum value detecting circuit and then outputs the selected signal. This circuit can appropriately separate the luminance and chrominance signals even in a case where the video signal includes a contour section.
摘要翻译： 一种用于分离亮度信号和具有串联连接的第一，第二，第三和第四1H延迟线的色度信号的电路，包括第一和第二1H延迟线的第一梳状滤波器，包括第二和第二1H延迟线的第二梳状滤波器， 第三1H延迟线，包括第三和第四1H延迟线的第三梳状滤波器，用于实现对第一1H延迟线的输入信号的减法和来自第二1H延迟线的输出信号的第一减法电路，第二减法线 用于实现对第二1H延迟线的输入信号的减法和来自第三1H延迟线的输出信号的电路，用于实现对第三1H延迟线的输入信号的减法的第三减法电路和来自 第四1H延迟线和连接到第一，第二和第三减法电路的最小值检测电路，用于从减法结果中检测最小值。 该电路通过使用来自梳状滤波器的输出信号通过开关选择最小值检测电路检测到最小相减结果，然后输出所选择的信号。 即使在视频信号包括轮廓部分的情况下，该电路也可适当地分离亮度和色度信号。
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9.发明授权Sequential scanning converter with frame comb filter and freeze frame feature 失效具有帧梳状滤波器和冻结帧特征的顺序扫描转换器
公开(公告)号：US4853765A
公开(公告)日：1989-08-01
申请号：US186164
申请日：1988-04-26
申请人： Kenji Katsumata , Masato Sugiyama , Takaaki Matono , Shigeru Hirahata , Isao Nakagawa , Kazuo Ishikura , Sunao Suzuki
发明人： Kenji Katsumata , Masato Sugiyama , Takaaki Matono , Shigeru Hirahata , Isao Nakagawa , Kazuo Ishikura , Sunao Suzuki
CPC分类号： H04N5/4448
摘要： A video signal processing circuit capable of reproducing a still picture signal from a color video signal comprises a luminance signal/chrominance signal separation circuit of a motion adaptive type, a scanning line interpolation circuit of a motion adaptive type connected with the separation circuit, a first memory connected with the separation circuit to store therein the output of the separation circuit, a second memory connected with the interpolation circuit to store therein the output of the interpolation circuit and a switching circuit for delivering therethrough the outputs of said first and second memories as a first output signal alternately and for delivering therethrough the outputs of said second and first memories as a second output signal alternately, the alternation for the delivery by the switching circuit being effected at a frequency identical with the field frequency of the video signal.
摘要翻译： 能够从彩色视频信号再现静止图像信号的视频信号处理电路包括运动自适应型的亮度信号/色度信号分离电路，与分离电路连接的运动自适应型的扫描线内插电路，第一 与所述分离电路连接的存储器，其中存储所述分离电路的输出;第二存储器，与所述内插电路连接以在其中存储所述内插电路的输出;以及切换电路，用于将所述第一和第二存储器的输出作为 交替地将第一和第二存储器的输出作为第二输出信号交替输出，由切换电路传送的交替以与视频信号的场频相同的频率进行。
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10.发明授权Television signal recording/reproducing apparatus of color-under recording type 失效彩色录像类型的电视信号记录/重放装置
公开(公告)号：US5016111A
公开(公告)日：1991-05-14
申请号：US271310
申请日：1988-11-15
申请人： Toshiyuki Sakamoto , Noboru Kojima , Isao Nakagawa
发明人： Toshiyuki Sakamoto , Noboru Kojima , Isao Nakagawa
CPC分类号： H04N9/7908 , H04N9/7904 , H04N9/83 , H04N9/831
摘要： A television signal recording/reproducing apparatus of the color-under recording type wherein an input composite video signal is separated into a luminance signal and a color signal. For the separated luminance signal, calculation of the interframe signals is executed so that the color signal component remaining in the separated luminance signal is removed by a frame comb filter. And the input signal and the output signal of the frame comb filter are mixed with each other. For the separated color signal, calculation of the interframe signals is executed so that the luminance signal component remaining in the separated color signal is removed by a frame comb filter. And the input signal and the output signal of the frame comb filter are mixed with each other. Each of the signal mixing ratios is controlled in accordance with the interframe level difference in the luminance signal. And the mixed signals are recorded on a recording medium after predetermined recording processes. Mutual interference between the luminance signal and the color signal is eliminated to consequently prevent deterioration of the signal-to-noise ratio while achieving a high image quality.
摘要翻译： 一种彩色录像类型的电视信号记录/重放装置，其中输入的复合视频信号被分成亮度信号和彩色信号。 对于分离的亮度信号，执行帧间信号的计算，使得残留在分离的亮度信号中的彩色信号分量被帧梳状滤波器去除。 并且帧梳状滤波器的输入信号和输出信号彼此混合。 对于分离的彩色信号，执行帧间信号的计算，使得残留在分离的彩色信号中的亮度信号分量被帧梳状滤波器去除。 并且帧梳状滤波器的输入信号和输出信号彼此混合。 根据亮度信号中的帧间电平差来控制每个信号混合比。 并且在预定的记录处理之后，混合信号被记录在记录介质上。 消除亮度信号和彩色信号之间的相互干扰，从而防止信号噪声的降低，同时实现高图像质量。
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