Sharp Kabushiki Kaisha Corporation

Noriaki Sakamoro

Toshihiro Yamanaka

Yoshiki Nishioka

Nobuyuki Horie

Toshiaki Fujikawa

A floppy disk driving circuit comprises a memory circuit for storing a plurality of items of delay time of a pair of erase heads from the switching-ON and the switching-OFF of a read/write head for all the tracks of a floppy disk, a control circuit responsive to the memory circuit for controlling ON- and OFF-delay timing of the pair of erase heads based on the plurality of items of delay timing. The plurality of items of suitable timing are previously calculated in connection with the respective tracks of the disk and stored within the memory circuit.

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Nara, Japan

Noriaki Sakamoro