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SPATIALLY INDEXED GRAMMAR AND METHODS OF USE

  • US 20090006077A1
  • Filed: 06/26/2007
  • Published: 01/01/2009
  • Est. Priority Date: 06/26/2007
  • Status: Active Grant
First Claim
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1. A method for speech recognition using tiles, each tile defines an area on the surface of the earth and the defined area is a more or less symmetrical shape defined by a coordinate system and can have a spatially proximate relationship to other tiles, a grammar is associated with each tile and is derived from feature names of first level identifiers in the area defined by the tile and, each first level identifier corresponds to a point on the surface of the earth, the method comprising:

  • identifying a candidate area location;

    choosing an initial tile based on the candidate area location;

    comparing an utterance of the first level identifier against a first grammar associated with the initial tile to determine if the utterance corresponds to a feature from which the first grammar was derived;

    if the utterance does not correspond to a feature in the first grammar,determining a plurality of second tiles; and

    comparing the utterance of the first level identifier against the plurality of grammars associated with the plurality of second tiles to determine if the utterance corresponds to a feature from which the plurality of grammars was derived; and

    determining a point coordinate associated with the feature which matches the utterance.

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