发明名称 |
Data input device with a flexible, double-layer cover for detecting a manipulation |
摘要 |
The invention relates to a device for inputting data by means of a keyboard (3) and a circuit board (8) which, apart from a processor (9), contains a random-access memory (10), buffered by a capacitor (11), in which at least one device-specific code number is stored. The circuit board (8) containing the processor (9) and the random-access memory (10) is protected on all sides against access by a cover (12), the change in position, removal or damage of which leads to a deletion of the code number in the random-access memory (10). (Figure 2). <IMAGE> |
申请公布号 |
EP0411185(B1) |
申请公布日期 |
1994.06.08 |
申请号 |
EP19890114325 |
申请日期 |
1989.08.03 |
申请人 |
SCHEIDT & BACHMANN GMBH |
发明人 |
MILLER, GERT, DIPL.-ING.;BUSCH, ERWIN, DIPL.-ING.;BAUMANN, GERD, ING.GRAD.;WORTELKAMP, ULRICH, DIPL.-ING.;SAUERMANN, MICHAEL, ING.GRAD. |
分类号 |
G06F1/00;G06F21/83;G06F21/86;G07F7/10;(IPC1-7):G07F7/10 |
主分类号 |
G06F1/00 |
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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