Patent ID: 6232916
Filing Date: 2001-05-15
Classification: A01K,G07C,G08B,Y10S

Abstract:
A GPS-based restraint system for monitoring a position of a subject relative to a physical confinement area having a perimeter, comprising:(a) a GPS receiver/transmitter for receiving GPS timing signals, said receiver/transmitter including a microprocessor for calculating and storing a waypoint;(b) a mapping algorithm for calculating a mapped programmed confinement area from a plurality of waypoints input into the receiver/transmitter;(c) a comparator for providing an output comparing a present position of the receiver/transmitter with the programmed confinement area, said output suitable for transmission by the receiver/transmitter; and(d) a base station receiver for receiving the output transmitted by the receiver/transmitter,wherein the position of the subject is monitored when the receiver/transmitter is attached to the subject.