Device for the protection of the access to memory words
US5978915A · kind A · utility
19Cited by
16References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1995 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1425
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The access to memory words of an integrated circuit is protected by the creation of a decision table that receives addresses of instruction words and/or data words to be protected and that receives also addresses of the control bits of a control word assigned to a word to be protected. It can be shown that this mode of action provides greater security through the use of a decision table made in wired circuit form as well as greater flexibility through the programmable quality of the control words assigned to each memory word to be controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.