| 发明名称 |
MEMORY UNIT COMPRISING A MEMORY AND A PROTECTION UNIT |
| 摘要 |
<p>In order to protect against illegal copying program words, which are stored in a memory (12), a memory unit (10) is provided with a protection unit (24) in addition to memory (12). The protection unit enables modification of the content of the program words which belong to a predetermined group before they are outputted out the memory. The program words which belong to that predetermined group are program words which have a data word comprising an address part for addressing a further program word.</p> |
| 申请公布号 |
CA1213070(A) |
申请公布日期 |
1986.10.21 |
| 申请号 |
CA19840452806 |
申请日期 |
1984.04.26 |
| 申请人 |
N.V.PHILIPS'GLOEILAMPENFABRIEKEN |
发明人 |
KAPLINSKY, CECIL H. |
| 分类号 |
G06F12/14;G06F1/00;G06F21/00;G06F21/22;(IPC1-7):G06F12/14;H04L9/00;G06F13/00 |
主分类号 |
G06F12/14 |
| 代理机构 |
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代理人 |
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