RFID multiple range method and system

Details RFID multiple range method and system RFID multiple range method and system

2005-07-13

2009-02-10

Garber, Charles D. (Department: 2609)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S568100, C340S572400

Reexamination Certificate

active

07489242

ABSTRACT:
The present invention is a method and system for determining the range of an RFID tag from an origin using radio-frequency identification (“RFID”) tags. An RFID tag with a unique numerical identifier is secured to an object. The RFID tag transmits its unique numerical identifier using RF signals, wherein the numerical identifier further comprises an array of extensions. The strength of each of the RF signals corresponds to an extension of the array of extensions. A receiver reads the RF signals and determines the unique numerical identifier and extensions being transmitted. An information processor interconnected with the receiver analyzes the unique numerical identifier and extensions from a predetermined index, and the information processor determines the range of the identity and range of the RFID tag from an origin.

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