Method and system for limiting program utilization period in computer
US5367704A · kind A · utility
16Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1993 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Jan 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4887
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a data processing system, a program list representing the names of programs which can be used and limit values representing a permissible time period of use of the programs are stored. When the system is started or a program is requested, the present time is acquired to determine permissibility of use of the program. Only when the present time is within the permissible time period of use is the requested program allowed to start.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.