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System and method of wireless downloads of map and geographic based data to portable computing devices

  • US 20060058951A1
  • Filed: 09/07/2005
  • Published: 03/16/2006
  • Est. Priority Date: 09/07/2004
  • Status: Abandoned Application
First Claim
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1. A method of caching map data, the method comprising:

  • storing a plurality of map segments in a cache;

    associating each of the map segments with a rank;

    updating the rank of at least one of the map segments when the at least one map segment is accessed;

    selecting at least one map segment from the cache to be removed based at least in part on the rank of the at least one selected map segment; and

    removing the at least one selected map segment from the cache.

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