Radio frequency identification system and a method of...

Details Radio frequency identification system and a method of... Radio frequency identification system and a method of...

2006-01-10

2011-11-29

Swarthout, Brent (Department: 2612)

Communications: electrical

Selective

Intelligence comparison for controlling

C340S572100, C340S010400, C235S385000, C235S376000, C705S028000, C705S022000, C700S215000, C700S221000, C700S229000

Reexamination Certificate

active

08068009

ABSTRACT:
A tag receives wireless signpost signals that include timing data, determines time information associated with an event as a function of the timing data, and transmits a wireless tag signal that contains the time information. In a another configuration, a signpost transmits wireless signpost signals having a selected transmission range; a reader proximate to the signpost receives wireless tag signals with a reception range that is approximately the same as the selected transmission range; and a tag movable relative to the signpost and reader responds to receipt of a wireless signpost signal by transmitting a wireless tag signal containing a tag code associated with the tag.

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