| 摘要 |
PROBLEM TO BE SOLVED: To collect an adequate copyright fee to protect the copyright and to enable the effective application of also the CD(compact disk) property in common to the case of the electronic music delivery(EMD) at the time of obtaining unciphered digital data by the circulation of a package medium, when the music data of the music CD are converted to the same form as in the network circulation and primarily recorded to obtain the copy when they are recorded on the portable recording medium such as a semiconductor memory. SOLUTION: The 1st data conversion device 101 is generally realized by a personal computer and furnished with a data from deciding part 103, a data compression and converting part 104, a 1st ciphering process part 106, a 1st recorder 108, a primary recording medium 109, a data taking out part 110, a 1st decoding process part 111 and a charging process part 113, then in the 1st ciphering process part, the data obtained by adding attribute data to the data compressed and converted by the data compression and converting part, are ciphered so as to become the ciphered system in common to the circulation data including the ciphered charging information delivered through the network. |
