| 摘要 |
A frequency conversion circuit for a signal in color carrier wave capable of greatly enhancing the record density when recording a color video signal on magnetic tape etc. is supplied with a frequency (fs+fA) of constant phase by a frequency converter(16) when head HA forms track TA and a frequency (fs+fB) when head HB forms track CA equal to the sub-carrier wave frequency fA and constant in phase.
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