发明名称 |
Device for the protection of the access to memory words |
摘要 |
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.
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申请公布号 |
US5978915(A) |
申请公布日期 |
1999.11.02 |
申请号 |
US19950573942 |
申请日期 |
1995.12.18 |
申请人 |
SGS-THOMSON MICROELECTRONICS S.A. |
发明人 |
LISART, MATHIEU;SOURGEN, LAURENT |
分类号 |
G06F12/14;G06F21/02;G06K17/00;(IPC1-7):G06F11/00;G11C17/00 |
主分类号 |
G06F12/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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