Storage-medium processing method, storage-medium processing device, and program
US7886361B2 · kind B2 · utility
15Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2005 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Sep 25, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Rental business of content data is adequately performed while preventing a improper use of rights or the like by a user. Rental user key data Kuren1-3, and rental content key data Kuren1-3 includes management metadata M1-M3 and M1′-M3′, respectively. The management metadata includes data use termination date/time indicating an expiration date or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.