| US 7,518,518 B2 | ||
| RFID transducer alignment system | ||
| Ramin Homanfar, Reno, Nev. (US); Bela Incze, Reno, Nev. (US); and David Massey, Sparks, Nev. (US) | ||
| Assigned to ABR, LLC, Reno, Nev. (US) | ||
| Filed on Dec. 18, 2007, as Appl. No. 11/959,249. | ||
| Application 11/959249 is a continuation of application No. 11/205348, filed on Aug. 16, 2005, granted, now 7,319,396. | ||
| Claims priority of provisional application 60/602751, filed on Aug. 18, 2004. | ||
| Claims priority of provisional application 60/602223, filed on Aug. 16, 2004. | ||
| Prior Publication US 2008/0169908 A1, Jul. 17, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G08B 13/14 (2006.01) | ||
| U.S. Cl. 340—572.1 [340/686.2; 378/170] | 22 Claims |
| 1. A radio frequency alignment apparatus, comprising:
an interrogator configured to emit at least one interrogation signal within an area of alignment;
at least one transponder configured to emit at least one radio frequency signal when excited by the at least one interrogation
signal from the interrogator; and
the interrogator configured to receive the at least one radio frequency signal from the at least one transponder and to generate
at least one signal that is processed to generate at least one of a visual and an audio indication of the relative orientation
of the transponder and the interrogator to each other.
|