G - Physics
07
C
G07C 9/00 (2006.01) E05B 17/22 (2006.01) G06K 19/067 (2006.01)
Patent
CA 2080716
ABSTRACT Control systems are described that permit access to certain buildings or rooms only to authorized persons. The control systems comprise data carriers (transponders), which are carried by these persons and brought into local proximity to a reading device, so that the data of the data carrier can be transmitted wireless to the reading device. The reading device transmits the authorization data received into a central evaluating unit, where said authorization data are checked. If the authorization data correspond with the check data, the evaluating unit causes the release of a door, so that the authorized person can enter a room. Only the data carrier is programmed with the customer-specific authorization data, whereas the associated reading devices are initially unprogrammed. The reading devices are programmed in due course by the data carrier, which, for said purpose, contains, in addition to the authorization data, corresponding control data. The latter are transmitted to the reading device as well. In this way, costly programming of the reading devices can be dispensed with.
Ridout & Maybee Llp
Stobbe Anatoli
LandOfFree
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