Electronic access card having key pads and coils and combination

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

1986-08-22

1989-09-05

Canney, Vincent P.

Registers

Records

Conductive

2353825, 235493, 235449, 34082531, G06F 1521, G06K 500

Patent

active

048641154

ABSTRACT:
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 microprocessor. A clock is coupled to the microprocessor. A 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.

REFERENCES:
patent: 4066873 (1978-01-01), Schatz
patent: 4277837 (1981-07-01), Stuckert
patent: 4605844 (1986-08-01), Haggan
patent: 4609780 (1986-09-01), Clark
patent: 4614861 (1986-09-01), Pavlov et al.
patent: 4650981 (1987-03-01), Foletta
patent: 4692601 (1987-09-01), Nakano
patent: 4692604 (1987-09-01), Billings
patent: 4727368 (1988-02-01), Larson et al.
patent: 4766746 (1988-08-01), Henderson et al.

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