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DATA DUPLICATION UTILIZATION SYSTEM, DATA DUPLICATION UNIT, DATA UTILIZATION UNIT, DATA DUPLICATION UTILIZATION METHOD, DATA DUPLICATION METHOD, DATA UTILIZATION METHOD, AND RECORDING MEDIUM
DATA DUPLICATION UTILIZATION SYSTEM, DATA DUPLICATION UNIT, DATA UTILIZATION UNIT, DATA DUPLICATION UTILIZATION METHOD, DATA DUPLICATION METHOD, DATA UTILIZATION METHOD, AND RECORDING MEDIUM
PROBLEM TO BE SOLVED: To provide a data duplication utilization system, a data duplication utilization method or the like for realizing the proper duplication of data.;SOLUTION: When an operator instructs recording of data, object data to be recorded on a CD-R 3 are supplied to an encryption part 12. The encryption part 12 encrypts the data by using an encryption key, and encrypted data are recorded on the CD-R 3 by a CD-R drive 13. The encryption key is stored into a semiconductor memory 4. When the CD-R 3 is set in the CD drive 21 of a CD player 2, the semiconductor memory 4 is set in a slot 22 for semiconductor memory and the operator instructs the reproduction of data, the CD drive 21 reads the encrypted data from the CD-R 3, and a decryption part 23 decrypts the data by using the encryption key stored in the semiconductor memory 4. Then, a sound or the like which the decrypted data represents is reproduced.;COPYRIGHT: (C)2002,JPO
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