Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2005-08-23
2005-08-23
Jung, David (Department: 2134)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S189000, C713S001000
Reexamination Certificate
active
06934854
ABSTRACT:
The access time for the use of an electronic device, for example a chip, is prolonged after each unauthorized access attempt. The access time is determined by the time for the matching of the turn-on voltages of two floating gate cells. Before an access attempt, the turn-on voltage of one cell is set to a predefined initial value and the turn-on voltage of the other cell is set to a value which is higher in comparison and which is increased after each unauthorized access.
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Brücklmeier Eric-Roger
Kux Andreas
Palm Herbert
Greenberg Laurence A.
Infineon - Technologies AG
Jung David
Locher Ralph E.
Stemer Werner H.
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