Content-data processing apparatus, content-data processing method, content data management system and content data management method
US7809956B2 · kind B2 · utility
4Cited by
3References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 26, 2004 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Aug 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/82
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a music-content management system, a client handles three types of data, i.e., a file for encrypting content and storing the content, a key that encrypted the content, and a use condition description for each service in which the content is used. The file stores one type of content encryption system and one type of encrypted content. The file also stores information regarding use condition descriptions for respective services.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.