Automobile navigation system using real time spoken driving instructions

  • US 5,177,685 A
  • Filed: 08/09/1990
  • Issued: 01/05/1993
  • Est. Priority Date: 08/09/1990
  • Status: Expired due to Term
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First Claim
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1. An automobile navigation system which produces spoken instructions to direct a driver of an automobile to a destination in real time comprising:

  • computing apparatus for running and coordinating system processes,driver input means functionally connected to said computing apparatus for entering data into said computing apparatus, said data including a desired destination,a map database functionally connected to said computing apparatus which distinguishes between physical and legal connectivity,position sensing apparatus installed in the automobile and functionally connected to said computing apparatus for providing said computing apparatus data for determining the automobile'"'"'s current position,a location system functionally connected to said computing apparatus for accepting data from said position sensing apparatus, for consulting said map database, and for determining the automobile'"'"'s current position relative to the map database,a route-finder functionally connected to said computing apparatus, for accepting the desired destination from said driver input means and the current position from said location system, for consulting said map database, and for computing a route to the destination,a discourse generator functionally connected to said computing apparatus for accepting the current position from said location system and the route from said route finder, for consulting said map database, and for composing discourse including instructions and other messages for directing the driver to the destination from the current position,a speech generator functionally connected to said discourse generator for generating speech from said discourse provided by said discourse generator, andvoice apparatus functionally connected to said speech generator for communicating said speech provided by said speech generator to said driver.

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