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Route guidance apparatus and method

  • US 6,820,005 B2
  • Filed: 11/12/2003
  • Issued: 11/16/2004
  • Est. Priority Date: 02/28/2001
  • Status: Expired due to Fees
First Claim
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1. A pedestrian route guidance apparatus, comprising:

  • a database configured to store map data including road network data and landmark data;

    a route search unit configured to search for a route from a departure point to a destination point from the road network data stored in said database, and to divide the route into a departure area, a destination area, and an intermediate area, wherein the departure area is a route area from the departure point to a first target point, the destination area is a route area from a last target point to the destination point, and the intermediate area is a junction area excluding the departure area and the destination area from the route;

    a road pattern analysis unit configured to set a mask having a size several times a road width of advance direction of the junction area, to extract the road network data corresponding to the mask from said database as a route network extraction area, to analyze a road pattern of the route by referring to the road network data, and to obtain road pattern data as the analysis result;

    a route guidance information generation unit configured to generate route guidance information of the route using the road pattern data and the landmark data along the route; and

    a presentation unit configured to present the route guidance information by speech.

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