Content protection system
US9009080B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 3, 2011 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jun 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/1235
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a content protection system, in which: a user terminal judges, when a content is to be reproduced or executed, whether or not the user terminal has a usage right of the content, and makes, if it is judged that the user terminal does not have the usage right of the content, a request to a license management apparatus to acquire the usage right of the content; the license management apparatus generates, when the request to acquire the usage right is received from the user terminal, license information containing information on an expiration date that is set based on a timing when the request is received, and transmits the generated license information to the user terminal; and the user terminal judges that the user terminal has the usage right of the content until the expiration date indicated by the license information received from the license management apparatus arrives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.