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    • 4. 发明授权
    • Color video signal reproducing apparatus using frequency converted
chrominance signal
    • 使用频率转换色度信号的彩色视频信号再现装置
    • US4882632A
    • 1989-11-21
    • US111361
    • 1987-10-21
    • Hiroto YasumuraMasahide HirasawaMinoru NojiSusumu KozukiKoji TakahashiKatsuji Yoshimura
    • Hiroto YasumuraMasahide HirasawaMinoru NojiSusumu KozukiKoji TakahashiKatsuji Yoshimura
    • H04N9/83H04N9/87
    • H04N9/87H04N9/83
    • The present invention is directed to a reproducing apparatus for reproducing a composite signal from a record bearing medium on which said composite signal is recorded, said composite signal being formed by frequency multiplexing a frequency-modulated luminance signal and a low-band converted carrier chrominance signal which is obtained by frequency-converting a carrier chrominance signal from a high frequency band to a low frequency band. The recording apparatus is constructed to separate the frequency-modulated luminance signal and the low-band converted carrier chrominance signal from the composite signal reproduced from said record bearing medium, to demodulate the frequency-modulated luminance signal to restore the luminance signal, to convert the low-band converted carrier chrominance signal into two kinds of color difference signals and to form R, G and B signals from the luminance signal and the two kinds of color-difference signals thus obtained. According to this construction, it is possible to form and output the R, G and B signals, without causing deterioration of signals.
    • 本发明涉及一种用于从记录有所述复合信号的记录承载介质再现复合信号的再现装置,所述复合信号通过频率复用经调频的亮度信号和低频带转换载波色度信号 其通过将载波色度信号从高频带频率转换为低频带而获得。 记录装置被构造成从所述记录承载介质再现的复合信号中分离调频亮度信号和低频带转换载波色度信号,以解调频率调制亮度信号以恢复亮度信号,以将 低频转换载波色度信号分为两种色差信号,并从亮度信号和由此得到的两种色差信号形成R,G和B信号。 根据这种结构,可以形成和输出R,G和B信号,而不会引起信号的劣化。