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Method and apparatus of expanding web searching capabilities

  • US 6,701,307 B2
  • Filed: 10/28/1998
  • Issued: 03/02/2004
  • Est. Priority Date: 10/28/1998
  • Status: Expired due to Term
First Claim
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1. A method for generating searchable information comprising:

  • scanning a document;

    determining whether any portion of the document being scanned contains information indicative of a spatial datum;

    finding a document portion that contains the information indicative of the spatial datum;

    examining data surrounding the document portion to locate the spatial datum in the document;

    extracting to spatial datum from the document;

    geocoding the spatial datum by generating a point key from a latitude and longitude, wherein generating the point key comprises;

    interleaving bits of the latitude with bits of the longitude; and

    converting adjacent pairs of bits to a number, the point key comprising an N-bit binary number that corresponds with the spatial datum; and

    generating area keys, each area key comprising an area greater than an area defined by the point key but which includes the area defined by the point key.

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