Guarded regions for controlling memory access
US4677546A · kind A · utility
69Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1984 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Aug 17, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1491
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a virtual memory system, a guarded region allows access to protected code and data without intervention from a processor's operating system by redefining regions of an address space with reference to gates indicating points of entry for those regions. A non-hierarchial access path in the form of a tree-like structure permits a process to access resources and data while controlling access thereto and return therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.