File-access control apparatus and program
US8863305B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 2, 2009 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Jan 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a file-access control system according to an embodiment of this invention, control data in accordance with actions made is imparted, as an obligation-type policy, to a document file. Next, a policy evaluation control unit evaluates and executes the obligation-type policy imparted to the document file in accordance with the action to the document file. The execution of the obligation-type policy includes the controlling of a document application on the basis of an obligation fulfillment action. Therefore, an active control can be performed in accordance with any manipulation made to the document, and the access to the document can be changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.