| 摘要 |
PURPOSE:To improve crosstalk, by releasing a circuit between the head of a channel not being reproduced and a reproducing head amplifier by a switching element inserted between a magnetic head and the reproducing head amplifier. CONSTITUTION:The switching elements 3 and 4 are operated by a PG pulse signal synchronizing with the operation of a video switching circuit 14. In other words, when the switching a elements 3 and 4 select the channel A and release the channel B, the video switching circuit 14 also selects the video output of the channel A, and when the switching elements 3 and 4 select the channel B and release the channel A, the video switching circuit 14 also selects video output of the channel B. In such a way, no induced current is generated in the head winding of the channel not being reproduced, and it is possible to remarkably reduce the crosstalk generated in the channel being reproduced.
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