| 摘要 |
PURPOSE:To reduce the crosstalk between magnetic heads, by connecting a load of low impedance to a magnetic head having large width when the reproduction is carried out by means of a magnetic head having small width. CONSTITUTION:Magnetic heads R', L', R and L are connected to amplifiers A1, B1, C1 and D1 via rotary transformers A, B, C and D, respectively. The terminals at fixed parts of transformers A and B are connected to each other via changeover switches SW4 and SW5. The switches SW4 and SW5 are turned on while a VTR is performing a long-time mode reproduction. While only the SW5 is turned on in a still reproduction mode. Thus the load impedance is lowered when viewed from unused heads R' and L'. Then the reproduction outputs of heads R' and L' are reduced to decrease the crosstalk between adjacent heads R and L. |
