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    • 3. 发明授权
    • Apparatus for receiving wide/standard picture plane television signal
    • 用于接收宽/标准图像平面电视信号的装置
    • US5353065A
    • 1994-10-04
    • US899040
    • 1992-06-16
    • Kenji KatsumataShigeru HirahataMasato SugiyamaIsao Nakagawa
    • Kenji KatsumataShigeru HirahataMasato SugiyamaIsao Nakagawa
    • H04N5/46H04N5/44H04N7/01H04N7/015H04N11/06H04N11/20
    • H04N7/012H04N7/0122H04N7/0152
    • Disclosed is a wide picture plane/standard picture plane television signal receiving apparatus which comprises: a first signal processing circuit for doubling the scanning speed of an input standard television signal; an aspect ratio conversion circuit for converting a display aspect ratio of the double scanning speed television signal from the first signal processing circuit into a wide aspect ratio; a second signal processing circuit for processing an input EDTV television signal into a double scanning speed television signal with a wide aspect ratio; a first signal selection circuit for selecting one of the respective output signals from the aspect ratio conversion circuit and the second signal processing circuit; a wide aspect display device for displaying the selected output signal from the first signal selection circuit; an EDTV signal detection circuit for detecting the processing effected on the EDTV signal in the second signal processing circuit to thereby switch the contact of the first signal selection circuit to its second signal processing circuit side from its first signal processing circuit side.
    • 公开了一种宽画面/标准画面电视信号接收装置,包括:第一信号处理电路,用于使输入的标准电视信号的扫描速度加倍; 用于将来自第一信号处理电路的双倍扫描速度电视信号的显示宽高比转换成宽宽比的宽高比转换电路; 第二信号处理电路,用于将输入的EDTV电视信号处理成宽宽比的双扫描速度电视信号; 第一信号选择电路,用于从宽高比转换电路和第二信号处理电路中选择各个输出信号之一; 用于从第一信号选择电路显示所选择的输出信号的宽屏幕显示装置; EDTV信号检测电路,用于检测在第二信号处理电路中对EDTV信号进行的处理,从而将第一信号选择电路与其第二信号处理电路侧的接触从其第一信号处理电路侧切换。
    • 5. 发明授权
    • Motion detector for chrominance signal in TV receiver
    • 电视接收机色度信号运动检测器
    • US4775888A
    • 1988-10-04
    • US143336
    • 1988-01-13
    • Isao NakagawaMasahiko AchihaMasato SugiyamaKenji KatsumataToshinori MurataShigeru HirahataAkihide Okuda
    • Isao NakagawaMasahiko AchihaMasato SugiyamaKenji KatsumataToshinori MurataShigeru HirahataAkihide Okuda
    • H04N5/14H04N9/64H04N5/21
    • H04N5/144
    • 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.
    • 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。
    • 7. 发明授权
    • Video signal processing circuit of motion adaptive type
    • 运动自适应型视频信号处理电路
    • US4733297A
    • 1988-03-22
    • US36431
    • 1987-04-09
    • Kenji KatsumataMasato SugiyamaAkihide OkudaShigeru HirahataIsao NakagawaSunao Suzuki
    • Kenji KatsumataMasato SugiyamaAkihide OkudaShigeru HirahataIsao NakagawaSunao Suzuki
    • H04N11/20H04N5/14H04N7/01H04N9/78
    • H04N5/144H04N7/012H04N9/78
    • A video signal processing circuit of motion adaptive type includes a circuit for identifying motion of a picture in a video signal on the basis of a difference signal between at least a line signal appearing in an M-th field and a corresponding line signal appearing in an (M-1)th field so that, when a scanning line produced on the basis of the video signal is interpolated between scanning lines of the video signal to improve the picture quality, a signal for interpolating said scanning line is produced in a different manner depending on whether a portion of the video signal to the displayed is a still picture or a moving picture. The motion identifying circuit comprises a horizontal filter spreading the difference signal in the horizontal direction, a circuit delaying the output signal of the horizontal filter by one field after attenuation, a line memory delaying the output signal of the attenuating and delaying circuit by one line, and an output circuit generating a signal identifying the motion of the picture on the basis of the output signals of the horizontal filter, attenuating and delaying circuit and line memory.
    • 运动自适应型视频信号处理电路包括一个电路,用于根据出现在第M场的线路信号和出现在第M场的相应线路信号之间的差分信号识别视频信号中的图像的运动 (M-1)场,使得当基于视频信号产生的扫描线被内插在视频信号的扫描线之间以提高图像质量时,以不同的方式产生用于内插所述扫描线的信号 取决于所显示的视频信号的一部分是静止图像还是运动图像。 运动识别电路包括在水平方向上扩展差分信号的水平滤波器,将衰减后的水平滤波器的输出信号延迟一个场的电路,将存储器的衰减延迟电路的输出信号延迟一行, 以及输出电路,其基于水平滤波器的输出信号,衰减和延迟电路和行存储器来产生识别图像的运动的信号。
    • 8. 发明授权
    • Motion detector for chrominance signal in TV receiver
    • 电视接收机色度信号运动检测器
    • US4736252A
    • 1988-04-05
    • US932376
    • 1986-11-20
    • Isao NakagawaMasahiko AchihaMasato SugiyamaKenji KatsumataToshinori MurataShigeru HirahataAkihide Okuda
    • Isao NakagawaMasahiko AchihaMasato SugiyamaKenji KatsumataToshinori MurataShigeru HirahataAkihide Okuda
    • H04N9/78H04N5/14H04N9/64H04N11/04
    • H04N5/144
    • 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.
    • 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。