System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar
US5715403A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1994 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Nov 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2135
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A system for controlling use and distribution of digital works. The present invention allows the owner of a digital work to attach usage rights to their work. The usage rights define how the individual digital work may be used and distributed. Instances of usage rights are defined using a flexible and extensible usage rights grammar. Conceptually, a right in the usage rights grammar is a label associated with a predetermined behavior and conditions to exercising the right. The behavior of a usage right is embodied in a predetermined set of usage transactions steps. The usage transaction steps further check all conditions which must be satisfied before the right may be exercised. These usage transaction steps define a protocol for requesting the exercise of a right and the carrying out of a right.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.