Driver key car identifying system

Details Driver key car identifying system Driver key car identifying system

1983-05-19

1985-11-26

Pitts, Harold I.

Registers

Records

Conductive

235482, 235487, G06K 1906

Patent

active

045556199

ABSTRACT:
A key card receiver is mounted in the cab of a truck. The driver inserts a card with a power-in contact shorted to several data output contacts. A power-out contact provides power to the receiver to operate three sequentially connected integrated circuits and another integrated circuit for pulsing the three serially connected circuits to convert concurrent binary data of shorted or open conductors on the driver card to a sequential data signal.

REFERENCES:
patent: 3609880 (1971-10-01), Arbon
patent: 3702464 (1972-11-01), Castrucci
patent: 3831119 (1974-08-01), Ambrosio
patent: 3851314 (1974-11-01), Hedin
patent: 3928750 (1975-12-01), Wolflingseder
patent: 3934122 (1976-01-01), Riccitelli

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