The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2013
Filed:
Jun. 03, 2005
Techniques for detecting rfid tags in electronic article surveillance systems using frequency mixing
Gary M. Shafer, Boca Raton, FL (US);
Ming-ren Lian, Boca Raton, FL (US);
Richard L. Copeland, Lake Worth, FL (US);
Gary M. Shafer, Boca Raton, FL (US);
Ming-Ren Lian, Boca Raton, FL (US);
Richard L. Copeland, Lake Worth, FL (US);
Sensomatic Electronics, LLC, Boca Raton, FL (US);
Abstract
Disclosed are a system and method to detect RFID tags in electronic article surveillance systems using frequency mixing. The system includes an RFID module that includes an energy coupler to receive transmitted energy that includes a first signal at a first frequency and a second signal at a second frequency, and a mixing element to mix the first and second signals, to generate a third signal at a third frequency, and the energy coupler to transmit the third signal to an EAS detection system. Other embodiments are described and claimed.