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. 12, 2010
Filed:
Dec. 21, 2006
Jarie G. Bolander, San Francisco, CA (US);
Paul A. Lovoi, Saratoga, CA (US);
Geoff A. Zawolkow, San Carlos, CA (US);
Jarie G. Bolander, San Francisco, CA (US);
Paul A. Lovoi, Saratoga, CA (US);
Geoff A. Zawolkow, San Carlos, CA (US);
Tagent 6 Corporation, Mountain View, CA (US);
Abstract
A system for tracking items using passive RFID tags utilizes separate data and power frequencies. Within an area in which the items are located, one or more data readers are provided but many more separate power modules are distributed through the space, for powering up the tags. With the power nodes distributed, the tags are powered from a relatively short distance, enabling the tags to transmit through a greater distance. One or more of the readers can include a power-node control which sends an RF signal to control on/off status of specific power nodes within the area, so that power nodes can be activated zone by zone, to thereby permit the reader to determine location by zone of products as their RFID tags are read.