| 摘要 |
Disk recording/reproducing apparatus has a first switch that outputs, during operation in the reproducing mode, the address signal and data signal alternately, and during either the recording or erasing mode, a reference voltage. A second switch outputs, during the address signal period, the address signal obtained from a amplifier, and, during the data signal period, the output signal obtained from the first switch. Thus, during the recording or erasing mode of operation, the second switch will not produce the data signal. The invention has the advantage of avoiding the previous need for an automatic gain control circuit in such apparatus.
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