Patent ID: 7259718

Claim:
A programmable system for determining the location of a mobile object within a predetermined boundary, the system comprising: a plurality of stationary transceivers and a mobile transceiver to be coupled to a moving object, the stationary transceivers and the mobile transceiver being able to communicate with one another; the transceivers including a learning mode and an operational mode, the learning mode including moving the mobile transceiver along a boundary line while the mobile transceiver is in communication with the stationary transceivers so as to define a boundary in relation to the stationary transceivers, and the operational mode comprising determining the location of the mobile transceiver in relation to the defined boundary; the learning mode including a boundary mode and an island mode, the boundary mode being used to define an outer boundary so that in the operational mode the mobile transceiver is prevented from moving out of the area defined by the outer boundary, and the island mode being used to define an inner boundary so that in the operational mode the mobile transceiver is prevented from moving inside the area defined by the inner boundary.