Communications: electrical – Selective – Interrogation response
Reexamination Certificate
2006-02-28
2006-02-28
Holloway, III, Edwin C. (Department: 2635)
Communications: electrical
Selective
Interrogation response
C340S870030, C340S539130, C340S572100, C342S042000
Reexamination Certificate
active
07005968
ABSTRACT:
A locating and tracking system is provided in which the assets desired to be located and tracked are associated with either radio frequency (RF) tags or radio frequency identification and radio frequency data communication (RFID/RFDC) devices. Depending on which device is attached to the asset, the other device is located at known locations. The RFID/RFDC devices interrogate and receive signals from the RF tags. The received information is sent to a host computer. With the location of either the RF tags or RFID/RFDC devices known, the assets may be located and tracked. An improved RF tag antenna design is also provided by using a switching mechanism connected to at least two antennas.
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Holloway III Edwin C.
Ingrassia Fisher & Lorenz P.C.
Symbol Technologies Inc.
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