| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a small memory card that counts reproduced states of contents and ensures high security. <P>SOLUTION: The memory card has a card interface controller 6, a security processing part 5 controlled by the card interface controller to supply an encryption key to the card interface controller upon a content reproduction request, a memory core interface 7 including a binary counter controlled by the security processing part and the card interface controller to count a reproduction degree upon the content reproduction request, and a memory core 3 for recording the reproduction degree of each content when receiving the content reproduction request, and for outputting an encrypted content to the memory core interface unless the reproduction request exceeds an allowable reproduction degree. <P>COPYRIGHT: (C)2003,JPO |
