| 摘要 |
<p>A log area (1415A) and a license area (1415B) are arranged in the memory of a memory card. In the license area (1415B), a license, e.g. a license ID and a license key Kc, and a validity flag, related to the entry number 0 to N-1 are stored. In the log area (1415A), a receiving log (70) and a transmission log (80) are stored. The transmission source of the license, i.e. the memory card, accepts a reception state from a destination memory card and validates the validity flag of an area designated by the entry number of the transmission log (80) if the reception state is on. Consequently, the license which is the object of transfer/duplicate can be restored even if the communication is interrupted during the transfer/duplicate of the license.</p> |
