Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 17, 2008
Patent Application Number
10468690
Date Filed
February 19, 2002
Patent Citations Received
Patent Primary Examiner
Patent abstract
A location system comprises a plurality of transponders whose locations are detectable by a base system. The base system interrogates (51-55) the transponders one at a time in accordance with a schedule of consecutive time slots. In response to a priority request received (53) from one of the transponders, the base system interrupts the schedule and interrogates substantially immediately (56,57,55) the signalling transponder so as to determine its location with minimal latency.
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