Patent Number: 6,490,522

Title: Route guidance generation apparatus and method

Abstract: An input unit indicates a departure point and a destination point on mapinformation. A calculation unit extracts a plurality of routes eachconnected from the departure point to the destination point from the mapinformation, and calculates a guidance demand degree of arbitrary pointsalong each of the plurality of routes. A guidance demand degree is anevaluation value of the point based on a linearity of route, a complexityof route junction, and a change of route width. A route selection unitselects one route from the plurality of routes based on the guidancedemand degree of each route. A guidance generation unit generates guidanceinformation of the point decided to guide based on the guidance demanddegree along the one route. A presentation unit presents the guidanceinformation to a user.

Inventors: Sugiyama; Hiroshi (Kanagawa-ken, JP), Doi; Miwako (Kanagawa-ken, JP)


International Classification: G01C 21/34 (20060101); G01C 002/00 ()

Expiration Date: 12/02015