05484997 is referenced by 262 patents and cites 20 patents.

An Integrated Circuit (IC) card is powered by an array of photovoltaic cells with an Electrically Erasable Programmable Read Only Memory (EEPROM) with associated electronic to read the EEPROM and generate a serial bit stream that modulates a Frequency Shift Keying (FSK) RF system employing a Dielectric Resonant Oscillator (DRO) and a matched dipole antenna. The IC card is totally passive and derives its energy from an external source of radiant energy upon the array of photovoltaic cells resident in the IC card. The IC card is capable of remote interrogation which enables the IC card to be used for traffic and personnel monitoring as well as credit card applications.

Title
Identification card with RF downlink capability
Application Number
162759
Publication Number
5484997
Application Date
May 31, 1994
Publication Date
January 16, 1996
Inventor
George W Haynes
101 Summit Blvd., Englewood, 80110
CO, US
IPC
G07B 15/02
G06K 16/06
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