| 摘要 |
PURPOSE:To prevent the occurrence of crosstalk between head by providing different video heads for channels of picture recording and reproducing time modes, and by grounding the terminal of a head for a mode channel other than one at use. CONSTITUTION:When heads 1 and 16 are used, a recorded signal is passed through an amplifier 14, a changeover switch 12 and a shielded wire 11 and recorded by the heads 1 and 2 by way of a mode changeover switch 10 and a rotary truck 3. For reproduction, the switch 12 is turned off and a switch 13 is turned on, applying the outputs of the heads 1 and 16 to a regenerative amplifier 15. In recording and reproduction mode, the outputs of other mode heads 2 and 17 are grounded via a switch 9. When video heads 2 and 17 are used, on the other hand, the outputs of the heads 1 and 16 are grounded via the switch 9. |
