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Method of communicating emergency warnings through an existing cellular communication network, and system for communicating such warnings

  • US 6,112,075 A
  • Filed: 01/02/1998
  • Issued: 08/29/2000
  • Est. Priority Date: 11/07/1994
  • Status: Expired due to Fees
First Claim
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1. A method of communicating emergency warnings to persons within a selected geographic area within a geographic region served by an existing cellular communication system that comprises a plurality of signal transmission stations, the method comprising:

  • providing a plurality of warning devices within the geographic region;

    identifying one or more, but less than all, of the plurality of transmission stations in the cellular communication system appropriate to activate warning devices in the geographic area; and

    transmitting a predetermined signal from the identified transmission station or stations to activate all the active warning devices in the geographic area of the geographic region, which warning devices generate emergency warnings in response to the predetermined signal.

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