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Detection system using personal communication device with response

  • US 6,667,688 B1
  • Filed: 12/22/1998
  • Issued: 12/23/2003
  • Est. Priority Date: 08/28/1998
  • Status: Expired due to Term
First Claim
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1. A method for controlling dispatches by a central station, comprising:

  • signaling a remote user of a detected event using a portable, bidirectional communications device via a bidirectional long distance wireless network; and

    coordinating the dispatch process at the central station based on a signal transmitted from the portable, bidirectional communications device in response to the detected event;

    wherein the remote user may cancel the dispatch process using the portable, bidirectional communications device to transmit a cancellation message which is automatically processed by the central station to prevent false dispatching.

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