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. 25, 2017
Filed:
Nov. 12, 2015
Applicant:
Impinj, Inc., Seattle, WA (US);
Inventors:
Kurt Eugene Sundstrom, Woodinville, WA (US);
Jayasuryan Iyer, Bellevue, WA (US);
Assignee:
Impinj, Inc., Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 5/22 (2006.01); G06K 7/10 (2006.01);
U.S. Cl.
CPC ...
G06K 7/10019 (2013.01);
Abstract
RFID readers may be configured to recover weak RFID tag signals from collisions with stronger RFID tag signals. An RFID reader may receive a combined tag response including a strong tag response and a weak tag response. The reader recovers the strong and weak tag responses using source separation. In one example, the reader may recover the strong tag response from the combined tag response and remove the recovered tag response from the combined tag response to form a modified tag response. The reader may then recover the weak tag response from the modified tag response.