Access control assembly

Details Access control assembly Access control assembly

G - Physics

08

B

340/125

G08B 13/00 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1039381

Abstract of the Disclosure An improved access control assembly including a key assembly constructed to receive a time division binary key code from a remotely located encoder station in the code receive mode of operation, and a lock assembly constructed to control access to a secured device or a secured area, the lock assembly having a predetermined time division binary lock code encoded therein uniquely identifying the lock assembly. When the key assembly is connected to the lock assembly, a time division binary lock recognition code, having a predeter- mined code format, is generated by the lock assembly and received by the key assembly, the key assembly generating the key code in response to the received lock recognition code detected by the key assembly to have the proper, predetermined code format. The key code generated by the key assembly is re- ceived by the lock assembly and compared with the lock code, the lock assembly operating to provide access to the secured device or the secured area in response to a received key code identical to the lock code. The lock assembly generates a signal in response to a comparison indicating the received key code differs from the lock code or in response to the operation of the lock assembly to provide access to the secured device or the secured area which is re- ceived by the key assembly and causes the key assembly to destroy the previously received key code and conditions the key assembly in the code receive mode for receiving subsequent key codes from the encoder station.

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