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Large area position/proximity correction device with alarms using (D)GPS technology

  • US 8,149,110 B2
  • Filed: 03/28/2011
  • Issued: 04/03/2012
  • Est. Priority Date: 12/26/2000
  • Status: Expired due to Term
First Claim
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1. A movable boundary detection device comprising:

  • a receiver configured to determine a position of the device; and

    a processor module configured to;

    determine that the position is a predetermined distance from a predefined boundary;

    detect a power saving condition; and

    implement a power saving strategy including one of the receiver, communications, and the processor module in response to detecting the power reduction condition.

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