| 摘要 |
A method for recording and reproducing a colour video signal having a luminance signal and two difference chroma signals together with a key signal by using two video tape recorders which are synchronously driven comprises the steps of dividing the two difference chroma signals so as to obtain high frequency components and low frequency components of the two difference chroma signals, recording a first video signal having the luminance signal and the two difference chroma signals having the low frequency components, and a second video signal having the key signal and the two difference chroma signals having the high frequency components in a format of 4:2:2 digital video signal processing by using a 4:2:2 type video tape recorder respectively, reproducing the first and second video signals, and combining the reproduced first and second video signals so as to obtain the colour video signal and the key signal. In a variant, the first and second video signals may be recorded on the same tape, with the second video signals being recorded in the guard bands between the tracks in which the first video signals are recorded.
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