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LARGE AREA POSITION/PROXIMITY CORRECTION DEVICE WITH ALARMS USING (D)GPS TECHNOLOGY

  • US 20110193717A1
  • Filed: 03/28/2011
  • Published: 08/11/2011
  • Est. Priority Date: 12/26/2000
  • Status: Active Grant
First Claim
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1. A movable boundary detection apparatus, comprising:

  • (a) a receiver operable to receive actual position coordinates of a movable device in a first space;

    (b) a memory module including a memory to store predefined position coordinates for defining boundaries of a second space being located within the first space;

    (c) a processor module communicatively coupled to the receiver and the memory module and operable to compare the actual position coordinates to the predefined position coordinates; and

    (d) an indicator communicatively coupled to the processor module and operable to indicate when the actual position coordinates are outside the predefined position coordinates for indicating that the device is outside the second space.

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