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:
May. 21, 2013
Filed:
Mar. 08, 2010
Kannan Ramchandran, El Cerrito, CA (US);
Ben J. Wild, San Francisco, CA (US);
Artem Tkachenco, Fremont, CA (US);
Upamanyu Madhow, Santa Barbara, CA (US);
Kannan Ramchandran, El Cerrito, CA (US);
Ben J. Wild, San Francisco, CA (US);
Artem Tkachenco, Fremont, CA (US);
Upamanyu Madhow, Santa Barbara, CA (US);
Checkpoint Systems, Inc., Thorofare, NJ (US);
Abstract
A localization method for use in a tag communication system includes associating a supertag having a plurality of tags with an item, reading backscatter signals from the tags of the plurality of tags to provide a plurality of backscatter signals, estimating a signal parameter of the backscatter signals of the plurality of backscatter signals to provide a plurality of derived signal parameters, and localizing the item in accordance with the plurality of derived signal parameters. The backscatter signals are read by a tag reader having a single antenna and the item is localized in accordance with an antenna array technique performed upon the plurality of derived signal parameters. The backscatter signals are read with an antenna array to provide a further plurality of derived signal parameters for each tag of the plurality of tags, and the item is localized in accordance with the further pluralities of derived signal parameters.