Data distributing system and recording medium used for it

Encrypted music data and additional information necessary for accessing a server (30) are copied from a CD-ROM (200) onto a memory card (110). The memory card (110) receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted music d...

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Bibliographische Detailangaben
Hauptverfasser:	NAKATA JUNJI, ANAZAWA TAKEAKI, HORI YOSHIHIRO, HATANAKA MASAYUKI, HASEBE TAKAYUKI, KANAMORI MIWA, KAMADA JUN, HATAKEYAMA TAKAHISA, HIOKI TOSHIAKI, KOTANI SEIGOU, TONEGAWA TADAAKI
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	Encrypted music data and additional information necessary for accessing a server (30) are copied from a CD-ROM (200) onto a memory card (110). The memory card (110) 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 (AC1) for limiting the number of accesses to the memory card from the server (30).