Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate
2007-08-13
2011-11-22
Pope, Daryl (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular system function
C340S572100, C340S573100, C340S539100, C340S539110, C340S539130
Reexamination Certificate
active
08063760
ABSTRACT:
An interrogator, methods of discerning the presence of an object, and interrogation systems employing the same. In one embodiment, the interrogation systems include multiple interrogators that communicate with a base command unit to track a location of an object. In another embodiment wherein the object is an RFID object (e.g., an object with an RFID tag), the interrogators employ signal processing techniques such as precharging the RFID object, and correlating a reference code with a reply code from the RFID object using selected techniques to increase a sensitivity of the interrogator, especially for adverse environments. In other embodiments, the interrogation systems include variations of metal instruments and sponges employed therewith. In yet another embodiment, the interrogation system includes metal interrogators capable of discerning the presence of a metal object, especially in a presence of another metal object.
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Boisbrun Glenn W.
Hatch Robert C.
Hensley David W.
Laferney Jimmy D.
Volpi John P.
Pope Daryl
Slater & Matsil L.L.P.
Veroscan, Inc.
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