发明名称 |
DYNAMIC VALUE CONTROL DRM SYSTEM, LICENSE ISSUING SERVER, CONTENT REPRODUCTION DEVICE, COOPERATION METHOD OF DYNAMIC VALUE CONTROL AND DRM, AND PROGRAM |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dynamic value control DRM system capable of performing cooperation without impairing versatility of a DRM while making use of an advantage of a dynamic value control system and an advantage of the DRM. <P>SOLUTION: This dynamic value control DRM system is provided with a license issuing server 20 that is a common interface between a DRM license issuing server 22 and a control information issuing server 21. Identification information (URL information or the like) about the license issuing server 20 is written into a DRM content file 13 generated by a DRM content distribution server 10. A dynamic value control DRM player 30 receiving the DRM content file 13 acquires control information and a DRM license on the basis of the identification information about the license issuing server 20 included in a DRM content, and reproduces the DRM content file 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
申请公布号 |
JP2005258927(A) |
申请公布日期 |
2005.09.22 |
申请号 |
JP20040071226 |
申请日期 |
2004.03.12 |
申请人 |
NTT COMWARE CORP |
发明人 |
AKASAKO TAKAYUKI |
分类号 |
G06F21/24;G06F12/14;H04L9/08 |
主分类号 |
G06F21/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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