| US 7,557,711 B2 | ||
| Interrogator and interrogation system employing the same | ||
| John P. Volpi, Garland, Tex. (US); Jimmy D. Laferney, Frisco, Tex. (US); and William C. Montgomery, Rockwall, Tex. (US) | ||
| Assigned to Veroscan, Inc., Plano, Tex. (US) | ||
| Filed on May 11, 2007, as Appl. No. 11/801,781. | ||
| Application 11/801781 is a continuation of application No. 11/357225, filed on Feb. 17, 2006. | ||
| Application 11/357225 is a continuation of application No. 10/378043, filed on Mar. 03, 2003, granted, now 7,019,650, filed on Mar. 28, 2006. | ||
| Prior Publication US 2007/0216526 A1, Sep. 20, 2007 | ||
| Int. Cl. G08B 13/14 (2006.01) | ||
| U.S. Cl. 340—572.1 [340/572.4; 340/505] | 20 Claims |
| 1. An interrogation system, comprising:
a sensing subsystem configured to provide a signal having a signature representing a presence of a radio frequency identification
(RFID) object;
a control and processing subsystem configured to discern a presence of said RFID object from said signal; and
a single position sensor configured to provide a location of said RFID object in accordance with a movement of said position
sensor with respect to said RFID object.
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