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Navigation system using portable phone and navigation method using the same

  • US 6,029,069 A
  • Filed: 05/28/1997
  • Issued: 02/22/2000
  • Est. Priority Date: 05/28/1996
  • Status: Expired due to Fees
First Claim
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1. A navigation system using a portable phone comprising:

  • a portable phone for transmitting destination information for a destination building, a navigation request for navigation to said destination building and present location information on a present location of a user of said portable phone;

    a base station for controlling a call of said portable phone in its control area;

    a building database file for storing information of each name and location of buildings existing in said control area;

    a map database file for storing a map covering said control area and a map covering a periphery of said control area based on a building location;

    a question message database file for storing question messages which demand said portable phone user to input a response according to a predetermined format to determine a present location of said portable phone user;

    route search means for retrieving information for said destination building from said building database file based on a navigation request and destination information received through said base station, and searching said map database file for a navigation route starting from a present location to a destination based on present location information received through said base station and said retrieved destination building information, and for searching said question message database file for a question message used to determine the present location of said portable phone user; and

    means for transmitting said question message and said navigation route to said portable phone through said base station.

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