A high-speed dubbing unit 10 for dubbing digital data from an optical disk 15 to a hard disk 16 at a high speed is connected via a public telephone line to a payment imposing unit 20. A control unit 13 is provided for generating in its basic data generator 13B basic data for imposing the payment from at least data indicative of the user identification and data indicative of the speed for recording the data read out from the optical disk 15 into the hard disk 16 and transmitting the basic data to the payment imposing unit 20. The payment imposing unit 20 performs the imposing of the payment according to the basic data received from the control unit 13 and transmits data indicative of the completion of imposing the payment to the control unit 13. In response to the data indicative of the completion of the payment, the control unit 13 directs the high-speed dubbing unit 10 to start recording the data read out from the optical disk 15 into the hard disk 16.

 
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