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    • 21. 发明授权
    • Data recorder restoring original data allowed to exist only uniquely
    • 恢复原始数据的数据记录器只能唯一存在
    • US07930558B2
    • 2011-04-19
    • US10471670
    • 2001-09-10
    • Yoshihiro Hori
    • Yoshihiro Hori
    • H04L9/32
    • G07F7/1008G06F21/10G06F21/105G06F21/79G06F2221/2101G06F2221/2135G06F2221/2153G06Q20/341G06Q20/3552G06Q20/3576
    • A log region (1415A) and a license region (1415B) are arranged in a memory of a memory card. The license region (1415B) stores licenses such as license IDs and license keys Kc as well as validity flags corresponding to entry numbers 0-(N−1). The log region (1415A) includes a receive log (70) and a send log (80). The memory card serving as a sender of the license accepts a receive state from the memory card on a receiver side, and validates the validity flag of a region designated by the entry number in the send log (8) when the receive state is ON. Consequently, even when communication is interrupted during shifting or copying of the license, the license to be shifted or copied can be restored.
    • 日志区域(1415A)和许可区域(1415B)布置在存储卡的存储器中。 许可证区域(1415B)存储许可证,例如许可证ID和许可证密钥Kc以及对应于条目号0-(N-1)的有效性标志。 日志区域(1415A)包括接收日志(70)和发送日志(80)。 作为许可证的发送者的存储卡在接收方接受来自存储卡的接收状态,并且当接收状态为ON时,验证由发送日志(8)中的条目号指定的区域的有效性标志。 因此,即使在移动或复制许可证期间中断通信,也可以恢复要移动或复制的许可证。