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:
Aug. 19, 2014
Filed:
Apr. 01, 2011
Crystal A. Bertoncini, Alexandria, VA (US);
Kevin E. Rudd, Springfield, VA (US);
Bryan D. Nousain, Greenbelt, MD (US);
Mark K. Hinders, Williamsburg, VA (US);
Crystal A. Bertoncini, Alexandria, VA (US);
Kevin E. Rudd, Springfield, VA (US);
Bryan D. Nousain, Greenbelt, MD (US);
Mark K. Hinders, Williamsburg, VA (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A system and method for authenticating a radio-frequency identification tags based on the features of the modulation features of the RFID signal. Dynamic wavelet fingerprint features are extracted from the signal by applying a wavelet transform to the signal to determine wavelet coefficients at a plurality of times and frequency scale values, creating a binary image from the wavelet coefficients, and measuring image features of at least one fingerprint object in the binary image. The measured features of the binary image fingerprint objects are compared to a database of features for the signal's EPC to authenticate the RFID tag.