Battery operated access control card

Details Battery operated access control card Battery operated access control card

H - Electricity

04

B

325/28

H04B 7/24 (2006.01) G06K 19/073 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1152158

ABSTRACT An access control card for use in an access control system is disclosed having a battery, a wireless signal sensor such as an antenna for receiving coded wireless signals such as coded radio frequency signals generated by a card reader, a clock connected to the battery and including a receiver connected to the antenna for supplying a received signal based upon the coded radio frequency signal, a memory for storing first and second stored codes, and a transmit circuit connected to the antenna, to the clock and to the memory for comparing the first stored code to the received signal and for transmitting the second stored code when there is a match between the received signal and the first stored code. 19

392383

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