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:
Oct. 12, 2010
Filed:
May. 01, 2007
Petar M. Djuric, Setauket, NY (US);
Akshay Athalve, Stony Brook, NY (US);
Petar M. Djuric, Setauket, NY (US);
Akshay Athalve, Stony Brook, NY (US);
Other;
Abstract
A radio frequency identification (RFID) system and method for tracking and locating an RFID tag is disclosed. The system includes a reader, an identification tag, at least one sensor-tag and a data processing element. The reader is used to initiate a query for an object with an RFID tag. The identification tag is attached to the object. The RFID tag responds to the query. At least one sensor-tag is positioned near the RFID tag. The at least one sensor-tag functions to receive the response of the RFID tag. The sensor-tag determines whether the identification tag is within a predetermined sensor-tag range. Based upon this determination, the at least one sensor-tag communicates a response signal to the reader when the at least one sensor-tag receives a predetermined request signal from the reader. Based on the responses of the sensor-tags, the location of the object with the responding RFID tag can be calculated.