Electronic access card having key pads and coils and...

Details Electronic access card having key pads and coils and... Electronic access card having key pads and coils and...

G - Physics

06

K

342/11, 352/57

G06K 5/00 (2006.01) G06K 19/077 (2006.01) G07C 9/00 (2006.01)

Patent

CA 1274894

Abstract of the Disclosure Electronic access card comprising a printed circuit board. A microprocessor is carried by the printed circuit board. A plurality of keys are carried by the board. A matrix connects the keys to the microproces- for. A clock is coupled to the microprocessor. battery is carried by the printed circuit board and coupled to the microprocessor. A coil serving as a transducer is carried by the printed circuit board and is coupled to the microprocessor and to the battery so that when keys are operated the keys are polled by the microprocessor and information is obtained from the keys supplied by the microprocessor to the transducer.

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