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Schematic generation

  • US 7,440,875 B2
  • Filed: 01/23/2003
  • Issued: 10/21/2008
  • Est. Priority Date: 01/23/2002
  • Status: Expired due to Fees
First Claim
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1. A method of providing graphical schematic data to a mobile device, the method comprising the steps of:

  • retrieving geographical data representative of a geographical network from a database, the data including a plurality of geographical features;

    receiving configuration data indicative of a property of the device;

    selecting one of a plurality of schematic types in dependence on the configuration data;

    selecting a set of geographical features from the geographical data;

    in accordance with the selected schematic type, processing the selected geographical features in accordance with a geometrical simplification algorithm and generating a graphical schematic from the processed geographical features; and

    outputting the graphical schematic to the device.

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