Communications: electrical – Selective – Interrogation response
Patent
1999-05-03
2000-10-03
Horabik, Michael
Communications: electrical
Selective
Interrogation response
37910611, 455 88, 455 95, 455100, H04Q 522
Patent
active
06127917&
ABSTRACT:
A system for locating an individual in a facility, the system including a portable wireless transponder device borne by the individual; an interrogator; and a plurality of antennas distributed in the facility, the antennas being selectively separately connected to the interrogator, the interrogator when connected to any of the antennas having a communications range covering less than the area of the entire facility, the interrogator being configured to repeatedly transmit a wireless command to the portable wireless transponder device using alternating antennas, the portable wireless transponder device being configured to transmit data identifying the portable wireless transponder device in response to a command if the portable wireless transponder device is within communications range of the antenna sending the command, the individual being locatable by determining with which antenna the interrogator was able to establish communications with the portable wireless transponder device.
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Horabik Michael
Hornsby Alton
Micro)n Technology, Inc.
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