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Monitoring device

  • US 7,340,240 B2
  • Filed: 03/09/2004
  • Issued: 03/04/2008
  • Est. Priority Date: 03/12/2003
  • Status: Active Grant
First Claim
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1. A monitoring device comprising:

  • a mobile telephone having a radio transmit/receive function;

    an operation detection unit detects a key input operation by a user;

    a position information acquisition unit acquires position information showing a current position of the monitoring device;

    a position-shift judgment unit judges whether the position of the monitoring device has shifted, based on the acquired position information; and

    a transmission control unit, when the key input operation has not been detected by the operation detection unit within a preset period, and the position-shift judgment unit has judged that the position of the monitoring device has not shifted, has the mobile telephone transmit an emergency notification message to a predetermined address.

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