| 摘要 |
PURPOSE:To improve the defect of a resolution reduction and to execute the wide band recording by band-converting part of a high frequency band of a luminance signal component to the frequency of or close to an odd-fold of 1/2 of a horizontal synchronizing signal of reduction of a luminance signal component, and making it into a recording signal. CONSTITUTION:An input composite signal EC1 is supplied to a cascade connecting circuit 3 composed of a comb-filter 2a, an LPF2b and a delay circuit 2. Here, a wide band luminance signal EY1 is separated and this is divided into a low frequency band component EY1a and a high frequency band component YE1b. After the high frequency band component EY1b is band-converted, the component is made composite so as to keep an interleaving relation at a composite circuit 10 again. On the other hand, by a BPF14, a modulated chromaticity signal ES2 is separated, this is band-converted through a burst sampling circuit 16, an oscillating device 17 and a frequency converter 22 by the signal and a band converter 15, and made into a modulated chromaticity signal ES3 in which a carrier is suppressed. This signal is sent to a composite circuit 25, made composite with a luminance signal EY4 and made into a recording signal.
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