Data distributing system and recording medium used for it

Data distributing system and recording medium used for it

Encrypted music data and additional information necessary for accessing a server are copied from a CD-ROM onto a memory card. The memory card receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted music data and control informa...

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Bibliographische Detailangaben
Hauptverfasser: Hatanaka, Masayuki, Kamada, Jun, Hatakeyama, Takahisa, Hasebe, Takayuki, Kotani, Seigou, Anazawa, Takeaki, Tonegawa, Tadaaki, Nakata, Junji, Hioki, Toshiaki, Kanamori, Miwa, Hori, Yoshihiro
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Encrypted music data and additional information necessary for accessing a server are copied from a CD-ROM onto a memory card. The memory card receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted music data and control information data (AC) for limiting the number of accesses to the memory card from the server.