Controlling the initiation of logical systems in a data processing system with logical processor facility
US5276884A · kind A · utility
17Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1991 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Apr 1, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/177
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a computer system that has one or more primary processing units processing user tasks and at least one auxiliary processing unit servicing the primary processing units, feature control is performed by storing a authorization code in the auxiliary processing unit. When an operation to change the feature of the computer system is initiated, a signal, including a key code, is sent to the auxiliary processing unit. The auxiliary processing unit checks the key code against the authorization code, and enables the operation if the check is successful.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.