Identification card

Details Identification card Identification card

1982-11-04

1985-03-19

Pitts, Harold I.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235382, G06K 500

Patent

active

045061483

ABSTRACT:
Identification card, including a card body, an integrated semiconductor circuit being mechanically inserted and protected in the card body for storing data to be read-out and read-in in changed form, a receiving antenna device, a rectifier circuit connected to the receiving antenna device, a filter circuit connected between the rectifier circuit and the integrated semiconductor circuit. The rectifier and filter circuits generate a supply voltage for the integrated semiconductor circuit from an energy field, a microwave transmitting antenna connected to the integrated semiconductor circuit, and a transmitter connected to the transmitting antenna.

REFERENCES:
patent: 3806874 (1974-04-01), Ehrat

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