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:
Jul. 10, 2012
Filed:
Mar. 19, 2009
Ben J. Wild, Sunnyvale, CA (US);
Upamanyu Madhow, Santa Barbara, CA (US);
Kannan Ramchandran, El Cerrito, CA (US);
Robert Barton, San Jose, CA (US);
Artem Tkachenko, Fremont, CA (US);
Ben J. Wild, Sunnyvale, CA (US);
Upamanyu Madhow, Santa Barbara, CA (US);
Kannan Ramchandran, El Cerrito, CA (US);
Robert Barton, San Jose, CA (US);
Artem Tkachenko, Fremont, CA (US);
Checkpoint Systems, Inc., Thorofare, NJ (US);
Abstract
In an RFID system with existing reader and tags communicating with each other, appliqués derive information by listening to this communication to yield significant performance benefits, while not affecting the communication between the existing nodes. For example, an appliqué capable of receiving beamforming can estimate the angle of arrival of the signal emitted by a tag, thereby providing information that can be used to localize the tag. An appliqué may be connected to an existing reader by means of an existing port, such as to an antenna port or to an Ethernet port. The information from appliqués can be integrated with that obtained from existing nodes at either the appliqués, or further up the hierarchy in middleware.