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Route searching device

  • US 6,222,836 B1
  • Filed: 03/23/1998
  • Issued: 04/24/2001
  • Est. Priority Date: 04/04/1997
  • Status: Expired due to Term
First Claim
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1. A route searching device for searching for a route to a destination comprising:

  • storage means for storing link data that relates to vehicular traffic information in links of a traffic route;

    arithmetic means for computing traffic information of a second link having no traffic information by carrying out weighting of traffic information of a first link having traffic information stored in the storage means according to a directional difference and a degree of separation between said first link and said second link, the directional difference relating to a physical difference in direction between the first and second links and the degree of separation relating to an amount of physical separation between the first and second links; and

    search means for searching a route to said destination by using said first link and said second link.

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