Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2011-03-01
2011-03-01
Zimmerman, Brian A (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S010100, C340S010200
Reexamination Certificate
active
07898419
ABSTRACT:
A networked radio frequency identification system includes a plurality of radio frequency identification (RFID) tag readers, a computer in signal communication with the RFID tag readers over a network, and a software module for storage on and operable by the computer that localizes RFID tags based on information received from the RFID tag readers using a network model having endpoints and oriented links. In an additional example, at least one of the RFID tag readers includes an adjustable configuration setting selected from RF signal strength, antenna gain, antenna polarization, and antenna orientation. In a further aspect, the system localizes RFID tags based on hierarchical threshold limit calculations. In an additional aspect, the system controls a locking device associated with an access point based on localization of an authorized RFID tag at the access point and reception of additional authorizing information from an input device.
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Black Lowe & Graham PLLC
Khan Omer S
Lucomm Technologies, Inc.
Zimmerman Brian A
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