Method and apparatus for recording and/or reproducing color video signal

A color video signal recording and reproducing apparatus comprising:

• first circuit means for frequency-modulating a luminance signal which is separated from a color video signal so as to produce a frequency modulated luminance signal;
• second circuit means for frequency-converting a carrier chrominance signal which is separated from the color video signal into a band which is lower than a band of the frequency modulated luminance signal so as to produce a frequency converted carrier chrominance signal;
• frequency division multiplexing means for frequency-division-multiplexing the output frequency modulated luminance signal of said first circuit means and the output frequency converted carrier chrominance signal of said second circuit means so as to obtain a frequency division multiplexed signal;
• first recording and reproducing means for recording the output frequency division multiplexed signal of said frequency division multiplexing means on a first track on a magnetic tape by supplying the frequency division multiplexed signal to one of a first pair of heads among a plurality of pairs of heads during a recording mode, said heads constituting a pair being arranged close to each other, and for reproducing the frequency division multiplexed signal from the first track during a reproducing mode;
• separating means for separating a high-frequency component of the color video signal from the color video signal;
• high-frequency signal generating means for generating a high-frequency signal including at least an added signal which is made up of the high-frequency component and a high-frequency bias signal;
• second recording and reproducing means for recording the output high-frequency signal of said high-frequency signal generating means on a second track by supplying the high-frequency signal to the other of said first pair of heads during the recording mode, said second track being formed simultaneously with the formation of said first track and being formed at a position on the magnetic tape that is different from a position of said first track, and for reproducing the high-frequency signal from the second track during the reproducing mode;
• separating and demodulating means for separating a reproduced frequency modulated luminance signal from the frequency division multiplexed signal which is reproduced from the first track by said first recording and reproducing means, and for demodulating the reproduced frequency modulated luminance signal so as to produce a reproduced luminance signal;
• high-frequency component obtaining means for obtaining a reproduced high-frequency component from the high-frequency signal which is reproduced from the second track by said second recording and reproducing means so as to produce a reproduced high-frequency component;
• delay means for matching the timing of the output reproduced high-frequency component of said high-frequency component obtaining means and a synchronizing signal within the output reproduced luminance signal of said separating and demodulating means, by use of a time reference signal within the high-frequency signal which is reproduced from the second track and the synchronizing signal within the output reproduced luminance signal of said separating and demodulating means;
• and
• mixing means for mixing an output reproduced high-frequency component of said delay means and the output reproduced luminance signal of said separating and demodulating means, so as to produce a reproduced color video signal.

A color video signal recording and reproducing apparatus comprising:

• first circuit means for frequency-modulating a luminance signal which is separated from a PAL or SECAM system color video signal so as to produce a frequency modulated luminance signal;
• second circuit means for frequency-converting a carrier chrominance signal which is separated from the color video signal into a band which is lower than a band of the frequency modulated luminance signal so as to produce a frequency converted carrier chrominance signal;
• frequency division multiplexing means for frequency-division-multiplexing the output frequency modulated luminance signal of said first circuit means and the output frequency converted carrier chrominance signal of said second circuit means so as to obtain a frequency division multiplexed signal;
• first recording and reproducing means for recording the output frequency division multiplexed signal of said frequency division multiplexing means on a first track on a magnetic tape by supplying the frequency division multiplexed signal to one of a first pair of heads among a plurality of pairs of heads during a recording mode, said heads constituting a pair being arranged close to each other, and for reproducing the frequency division multiplexed signal from the first track during a reproducing mode;
• separating means for separating a high-frequency component of the color video signal from the color video signal;
• high-frequency signal generating means for generating a high-frequency signal including at least an added signal which is made up of the high-frequency component and a high-frequency bias signal;
• second recording and reproducing means for recording the output high-frequency signal of said high-frequency signal generating means on a second track by supplying the high-frequency signal to the other of said first pair of heads during the recording mcde, said second track being formed simultaneously with the formation of said first track and being formed at a positicn on the magnetic tape that is different from a position of said first track, and for reproducing the high-frequency signal from the second track during the reproducing mode;
• separating and demodulating means for separating a reproduced frequency modulated luminance signal from the frequency division multiplexed signal which is reproduced from the first track by said first recording and reproducing means, and for demodulating the reproduced frequency modulated luminance signal so as to produce a reproduced luminance signal;
• high-frequency component obtaining means for obtaining a reproduced high-frequency component from the high-frequency signal which is reproduced from the second track by said second recording and reproducing means so as to produce a reproduced high-frequency component;
• delay means for matching the timing of the output reproduced high-frequency component of said high-frequency component obtaining means and a synchronizing signal within the output reproduced luminance signal of said separating and demodulating means, by use of a time reference signal within the high-frequency signal which is reproduced from the second track and the synchronizing signal within the output reproduced luminance signal of said separating and demodulating means;
• first mixing means for mixing an output reproduced high-frequency component of said delay means and the output reproduced luminance signal of said separating and demodulating means, so as to produce a reproduced color video signal;
• and
• correcting means at least supplied with the output reproduced color video signal of said first mixing means or with a carrier chrominance signal which is reproduced from the first track, for carrying out a time base correction so as to produce a reproduced color video signal having a corrected time base.