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. 02, 2012
Filed:
Mar. 28, 2008
Christopher J. Diorio, Shoreline, WA (US);
Paul Dietrich, Seattle, WA (US);
Theron Stanford, Seattle, WA (US);
Chad Lindhorst, Seattle, WA (US);
Kambiz Rahimi, Bellevue, WA (US);
Ali Aiouaz, Mission Viejo, CA (US);
Aanand Esterberg, Seattle, WA (US);
Christopher J. Diorio, Shoreline, WA (US);
Paul Dietrich, Seattle, WA (US);
Theron Stanford, Seattle, WA (US);
Chad Lindhorst, Seattle, WA (US);
Kambiz Rahimi, Bellevue, WA (US);
Ali Aiouaz, Mission Viejo, CA (US);
Aanand Esterberg, Seattle, WA (US);
Impinj, Inc., Seattle, WA (US);
Abstract
RFID tags and chips for RFID tags are capable of being inventoried in one or more early attempts. These tags are capable of then refraining from participating in one or more subsequent inventorying attempts. In some embodiments refraining is performed solely by the tag, while in others it is guided by the RFID reader. In some embodiments, an inventoried indicator in the tag becomes updated upon backscattering. The updated value is used by the tag to recognize a subsequent attempt, and thus refrain from participating in it. This permits the subsequent attempt to be used more intensively for inventorying the more elusive, harder-to-read tags, especially in more demanding scenarios.