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System and method for providing a natural language voice user interface in an integrated voice navigation services environment

  • US 8,719,026 B2
  • Filed: 02/04/2013
  • Issued: 05/06/2014
  • Est. Priority Date: 12/11/2007
  • Status: Active Grant
First Claim
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1. A method for providing a natural language voice user interface, the method being implemented on a computer system including one or more physical processors executing one or more computer program instructions which, when executed, perform the method, the method comprising:

  • receiving, by the one or more physical processors, a natural language utterance from an input device associated with a navigation device, wherein the natural language utterance relates to navigation;

    determining, by the one or more physical processors, a current location of the navigation device;

    selecting, by the one or more physical processors from among a plurality of sets of location-specific grammar information, a set of location-specific grammar information based on proximity between the current location and a location associated with the set of location-specific grammar information;

    determining, by the one or more physical processors, an amount of available resources for processing the natural language utterance;

    determining, by the one or more physical processors, a size threshold for a recognition grammar based on the amount of available resources;

    generating, by the one or more physical processors, the recognition grammar with the set of location-specific grammar information based on the size threshold such that a size of the recognition grammar does not exceed the size threshold;

    determining, by the one or more physical processors, one or more interpretations of the natural language utterance based on the recognition grammar;

    determining, by the one or more physical processors based on the one or more interpretations, a destination; and

    determining, by the one or more physical processors, a route from the current location to the destination.

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