| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a music content use system which can prevent unauthorized use of the music contents. <P>SOLUTION: This music content use system has a security information chunk which includes content material identification information, a read means to read the content material identification information in the security information chunk and the content material identification information in the content material chunk from a medium recorded with music contents including the security information chunk and a content material chunk each containing the content material identification information; a comparing means to compare the read content material identification information in the security information chunk and the content material identification information in the content material chunk, and a content use means to permit the use of the music contents when the comparing means decides that the content material identification informations of both chunks agree each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
