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. 21, 2012
Filed:
Jun. 30, 2009
Pavel Nikitin, Seattle, WA (US);
Rene Martinez, Seattle, WA (US);
Shashi Ramamurthy, Seattle, WA (US);
Kvs Rao, Bothell, WA (US);
Pavel Nikitin, Seattle, WA (US);
Rene Martinez, Seattle, WA (US);
Shashi Ramamurthy, Seattle, WA (US);
Kvs Rao, Bothell, WA (US);
Intermec IP Corp., Everett, WA (US);
Abstract
A method and system of determining spatial identification of an object, such as orientation, size, location, range, and/or movement, using an RFID system is disclosed. An RFID system can comprise one or more RFID reader receiving antennas that query one or more RFID tags coupled to the object. The measurement of the phase of the tag responses at the reader antennas and phase differentials as a function of distance, frequency, and time are the basis of spatial identification. The system can work with conventional Gen 2 tags and readers without modification of the tags or protocol.