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Navigation system

  • US 6,360,164 B1
  • Filed: 11/26/1999
  • Issued: 03/19/2002
  • Est. Priority Date: 11/27/1998
  • Status: Expired due to Term
First Claim
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1. A navigation method comprising:

  • receiving present location information and destination location information communicated over a telephone network from a telephone using dual-tone multi-frequency signals;

    using the received present location information and destination location information, and latitude and longitude information stored in a latitude/longitude memory section to automatically obtain latitude and longitude information regarding the present location and the destination location;

    automatically determining one or both of a distance and direction between the present location and the destination location based on the automatically obtained latitude and longitude information;

    automatically transmitting over the telephone network to the telephone a voice message reporting the automatically determined distance and/or direction;

    using the automatically determined distance and/or direction, and transportation facilities information stored in a transportation facilities memory section to determine a route from the present location to the destination location;

    transmitting to the telephone over the telephone network a voice message reporting the determined route;

    receiving route selection information communicated from the telephone using dual-tone multi-frequency signals; and

    transmitting over the telephone network to a taxi dispatch facility taxi dispatch information if the route selection information selects a route at least partly requiring taxi transportation, wherein the stored transportation facilities information comprises at least taxi information.

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