07019650 is referenced by 111 patents and cites 91 patents.

The present invention is directed to an interrogator, method of discerning metal and radio frequency identification (RFID) objects, and an interrogation system employing the same. In one embodiment, the interrogator includes a metal sensing subsystem configured to provide a first signal having a signature representing a presence of a metal object, and a RFID sensing subsystem configured to provide a second signal having a signature representing a presence of a RFID object. The interrogator also includes a control and processing subsystem configured to discern a presence of at least one of the metal and RFID objects from one of the first and second signals.

Title
Interrogator and interrogation system employing the same
Application Number
10/378043
Publication Number
7019650 (B2)
Application Date
March 3, 2003
Publication Date
March 28, 2006
Inventor
William C Montgomery
Rockwall
TX, US
Jimmy D Laferney
Frisco
TX, US
John P Volpi
Garland
TX, US
Agent
Slater & Matsil L
Assignee
Caducys L L C
TX, US
IPC
G08B 13/14
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