Methods for interrogating objects to be identified over a...

Communications: electrical – Selective – Interrogation response

Reexamination Certificate

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C340S010100, C340S010200, C340S870030, C340S870030, C340S010510, C370S437000, C370S458000

Reexamination Certificate

active

07916001

ABSTRACT:
Systems and methods for efficiently querying and identifying multiple items on a communication channel are disclosed. The invention is well suited to use with radio frequency identification with interrogation devices and systems that identify radio frequency identification transponders. A depth-first tree traversal protocol algorithm, including commands and symbols, is used to more efficiently interrogate a plurality of transponders in a short amount of time.

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