Communications: electrical – Selective – Intelligence comparison for controlling
Reexamination Certificate
2005-03-22
2005-03-22
Zimmerman, Brian (Department: 2635)
Communications: electrical
Selective
Intelligence comparison for controlling
Reexamination Certificate
active
06870459
ABSTRACT:
A theft protection system for an automobile and a method for initializing the theft protection system transmit a challenge signal from a central control unit over a data line during the initialization of the theft protection system, after a starting signal has been received. Control units that are connected to the data line send back an identification which is stored in the central control unit. The extent of the control units tied into the theft protection system is thus fixed. During subsequent authentication operations, all of those control units must answer with their identification, before the automobile can be used. An electronically coded dongle is advantageously used as a control unit.
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Edsperger Markus
Fest Dieter
Greenberg Laurence A.
Mayback Gregory L.
Stemer Werner H.
Zimmerman Brian
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