Electronic identification device

Details Electronic identification device Electronic identification device

H - Electricity

04

L

340/177

H04L 15/04 (2006.01) G07C 9/00 (2006.01) G07F 7/08 (2006.01) H04L 17/02 (2006.01)

Patent

CA 1094196

CANADIAN PATENT APPLICATION OF STEN TAGE LUNDGREN FOR ELECTRONIC IDENTIFICATION DEVICE Abstract of the Disclosure The disclosure relates to the computer art in general, and in particular to an identification device of the key-board type with a rectifier suppliable inductively via a coil for current supply of the device and supply of a trigger signal to a pulse generator with several outputs. On receipt of the trigger signal. the pulse gene- rator generates a predetermined sequence of pulses on its outputs which are connected to a combinational circuit having two outputs and being operative to generate for each pulse combination on the outputs of the pulse generator a pulse on either one of its two outputs. The pulses appearing at these two outputs are inductively transferred to a detector which thus receives a pulse train containing a predetermined number of pulses, by whose various polarity a binary number constituting the identification code of the device is determined.

292895

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