Sanyo Electric Co., Ltd.

Junko Onaka

Koichi Tada

Shigekazu Minechika

A disk reproducing apparatus includes a variable gain amplifier (VCA) (), and the VCA applies a radial push-pull signal including an address signal and an FCM leakage-in signal to a switch (). The switch outputs only the address signal to a peak-hold circuit () on the basis of an FCM mask signal from a mask signal generation circuit (). The peak-hold circuit generates a peak-hold signal of the address signal so as to be output to a DSP (), and the DSP controls a gain of the VCA on the basis of the peak-hold signal. Then, the radial push-pull signal in which the gain is controlled on the basis of the address signal is applied to an address detection circuit (), and the address signal is detected therein.

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Osaka, Japan

Junko Onaka