System for managing license for protecting content, server for issuing license for protecting content, and terminal for using content protected by license
US7590856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2003 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Mar 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q20/3829
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A license server 1 comprises: a license table for managing licenses purchased by users; a communication control section 20 for transmitting/receiving data through a communications network 3; an authentication control section 22 for performs authentication processing for a terminal 2; an encryption/decryption control section 21 for encrypting/decrypting communications with the terminal 2; an issued temporary license information table 13 for storing information on issued temporary licenses; and a return control section 24 for returning a temporary license and then deleting the information on the temporary license stored in the issued temporary license information table 13.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.