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. 11, 2010
Filed:
Mar. 31, 2006
Mohammad Soleimani, Gaithersburg, MD (US);
Victor Hugo Molina, Germantown, MD (US);
Martin Strzelczyk, New Market, MD (US);
Mark Duron, East Pathogue, NY (US);
Ron Boschini, Germantown, MD (US);
Jens Arnold, Perry Hall, MD (US);
Darrell Pinson, Mt. Airy, MD (US);
Mohammad Soleimani, Gaithersburg, MD (US);
Victor Hugo Molina, Germantown, MD (US);
Martin Strzelczyk, New Market, MD (US);
Mark Duron, East Pathogue, NY (US);
Ron Boschini, Germantown, MD (US);
Jens Arnold, Perry Hall, MD (US);
Darrell Pinson, Mt. Airy, MD (US);
Symbol Technologies, Inc., Holtsville, NY (US);
Abstract
Methods, systems and apparatuses for RFID readers forming a reader network are described. In an aspect of the present invention, a plurality of RFID readers are configured to interrogate tags. Furthermore, the readers are configured to communicate with one another by transferring a token, represented by a signal. Possession of the token enables the reader to access a RF communications medium. Readers can be arranged in a ring configuration, and interconnected via wired links. A secondary token may circulate in the ring in addition to the primary token, to ensure redundancy in the system. A reader waits for a predetermined time interval before accessing the RF communications medium.