MAP DRAWING DEVICE

• US 20110004640A1
• Filed: 02/27/2008
• Published: 01/06/2011
• Est. Priority Date: 02/27/2008
• Status: Abandoned Application

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Otsuru, Makoto, Noguchi, Mototsugu
• Application Number:
  US12/919,685
• Publication Number:
  US 20110004640A1
• Time in Patent Office: Days
• US Class Current: 707/812
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G09B 29/106 using electronic means

Abstract

A map drawing device determines whether or not there is a connection between sequences of points respectively showing roads corresponding a link so as to create data for link drawing defining sequences of points which are connected to each other in this link on the basis of road data defining the sequence of points showing each road with coordinates in each of a plurality of areas into which a map is divided, and also draws the roads corresponding to the link on the map on the basis of this data for link drawing.

Claims

1. A map drawing device comprising:

a map data storage unit for storing road data defining a sequence of points showing a road with coordinates in each of a plurality of areas into which a map is divided;

a link data creating unit for creating link data defining a link sequence connected between two points by using links each showing a path length and an attribute of a road;

a drawing data creating unit for, on a basis of road data about each of roads in said each area corresponding to a link of said link data, determining whether or not there is a connection between the sequences of points respectively showing said roads, and for, when being able to define sequences of points which are connected to each other in this link, creating data for link drawing, otherwise, creating data for link drawing different from said data for link drawing on a basis of road data about roads in each area different from said each area, the road data corresponding to the road data about each of the roads in said each area;

a drawing data storage unit for storing said data for link drawing; and

a drawing processing unit for, when drawing a map for each of said plurality of areas, drawing the roads corresponding to said link on the map on a basis of the data for link drawing read from said drawing data storage unit.