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. 29, 2019
Filed:
Feb. 07, 2018
Amazon Technologies, Inc., Seattle, WA (US);
Joshua David Landry, Sr., Auburn, WA (US);
Christopher Raymond Grajewski, Seattle, WA (US);
Oleg Kantor, Kirkland, WA (US);
Tak Keung Joseph Lui, Bellevue, WA (US);
David Bruce McCalib, Jr., Seattle, WA (US);
Roman Shmulevich, Woodbridge, CA;
Alton Paul Werronen, Auburn, WA (US);
Fabien Lepoutre, San Jose, CA (US);
Mark G. McDonald, San Jose, CA (US);
Patrick Rubin, San Jose, CA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
A method of interrogating a plurality of RFID tags comprises interrogating a first RFID tag with a read command comprising a masking value for a predefined portion of a User Memory Bank of the first RFID tag. The predefined portion stores state information for the first RFID tag. The masking value corresponds to a non-quiesced state relative to the read command interrogation. The method further comprises receiving a response from the first RFID tag that indicates that the first RFID tag is in the non-quiesced state. The method further comprises interrogating the first RFID tag with a write command that instructs the first RFID tag to write a predefined value to the predefined portion of the User Memory Bank, wherein writing the predefined value to the predefined portion places the first RFID tag in a quiesced state relative to a subsequent read command interrogation comprising the masking value.