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31.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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32.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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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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公开(公告)号：US4577228A
公开(公告)日：1986-03-18
申请号：US614667
申请日：1984-05-29
申请人： Ikuya Arai , Toshinori Murata , Masafumi Kazumi
发明人： Ikuya Arai , Toshinori Murata , Masafumi Kazumi
摘要： A transversal filter suitable for use in a ghost canceller of television receiver. The amplifiers of the transversal filter employ MOS transistors each loaded by a complementary connection of a P-MOS transistor and an N-MOS transistor constituting a C-MOS transistor pair.
摘要翻译： 适用于电视接收机的重影消除器的横向滤波器。 横向滤波器的放大器采用MOS晶体管，每个MOS晶体管由构成C-MOS晶体管对的P-MOS晶体管和N-MOS晶体管的互补连接负载。
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公开(公告)号：US4476491A
公开(公告)日：1984-10-09
申请号：US406565
申请日：1982-08-09
CPC分类号： H04N5/211
摘要： A wide-band ghost reduction circuit apparatus for a television receiver comprises a ghost detector, two transversal filters having delay characteristics different from each other, a switch for selecting one of the filters and an automatic gain control circuit responsive to the output of the ghost detector for controlling the filters and the switch. Each of the transversal filters includes tap amplifiers whose gains are controlled by the automatic gain control circuit and having outputs connected, respectively, to tap inputs of delay devices formed of such as a CCD each provided with a tap and included in the associated transversal filter. Output end of one of the transversal filters having a smaller delay is connected to a selected one of the input tap of the other transversal filter through a switch so that input video signal components join together at every input terminal or every individual tap position of the delay devices.
摘要翻译： 一种用于电视接收机的宽带重放电路装置，包括：重影检测器，具有彼此不同的延迟特性的两个横向滤波器，用于选择滤波器之一的开关和响应于重影检测器输出的自动增益控制电路 用于控制过滤器和开关。 每个横向滤波器包括抽头放大器，其增益由自动增益控制电路控制，并且具有输出分别连接到由诸如CCD的延迟装置的抽头输入，各个提供有抽头并且包括在相关联的横向滤波器中。 具有较小延迟的一个横向滤波器的输出端通过开关连接到另一横向滤波器的选定的一个输入抽头，使得输入视频信号分量在延迟的每个输入端或每个单独的抽头位置处连接在一起 设备。
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公开(公告)号：US4247953A
公开(公告)日：1981-01-27
申请号：US920698
申请日：1978-06-30
摘要： A high-frequency input circuit suitable for use in a television receiver, which includes a tuning circuit which can operate with a reduced loss and can be tuned to signals in, for example, the VHF and UHF bands at the same time. The high-frequency input circuit provides an integrated tuner capable of receiving all the signals within the range from the VHF band to the UHF band.
摘要翻译： 一种适用于电视接收机的高频输入电路，其包括可以以较低损耗工作的调谐电路，并且可以同时调谐到例如VHF和UHF频带的信号。 高频输入电路提供能够接收从VHF频带到UHF频带范围内的所有信号的集成调谐器。
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