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PORTABLE DEVICE AND METHOD FOR PROVIDING NAVIGATION DATA

  • US 20070143016A1
  • Filed: 03/16/2006
  • Published: 06/21/2007
  • Est. Priority Date: 12/19/2005
  • Status: Abandoned Application
First Claim
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1. A portable device capable for providing navigation data, comprising:

  • a mask ROM for storing and providing an original navigation map data;

    an input unit for receiving an updated navigation map data;

    a RAM for storing the updated navigation map data;

    a GPS unit for receiving a positioning coordinate from a GPS; and

    a CPU electrically coupled to the mask ROM, the input unit, the RAM, and the GPS unit, wherein the CPU reads the original navigation map data, and when the updated navigation map data exists, the CPU uses the updated navigation map data to revise the original navigation map data in order to generate a revised navigation map data and to find a position represented by the positioning coordinate on the revised navigation map data.

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